Add multi version support

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "protocol-generator/minecraft-data"]
+	path = protocol-generator/minecraft-data
+	url = https://github.com/PrismarineJS/minecraft-data

.travis.yml

@@ -7,27 +7,3 @@ rust:
 matrix:
   allow_failures:
     - rust: nightly
-addons:
-  apt:
-    packages:
-      - libcurl4-openssl-dev
-      - libelf-dev
-      - libdw-dev
-      - cmake
-      - gcc
-      - binutils-dev
-      - libiberty-dev
-after_success: |
-  wget https://github.com/SimonKagstrom/kcov/archive/master.tar.gz &&
-  tar xzf master.tar.gz &&
-  cd kcov-master &&
-  mkdir build &&
-  cd build &&
-  cmake .. &&
-  make &&
-  make install DESTDIR=../../kcov-build &&
-  cd ../.. &&
-  rm -rf kcov-master &&
-  for file in target/debug/minecraft_protocol*; do [ -x "${file}" ] || continue; mkdir -p "target/cov/$(basename $file)"; ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --verify "target/cov/$(basename $file)" "$file"; done &&
-  bash <(curl -s https://codecov.io/bash) &&
-  echo "Uploaded code coverage"

Cargo.toml

@@ -3,4 +3,5 @@
 members = [
     "protocol",
     "protocol-derive",
-]
+    "protocol-generator"
+]

README.md

@@ -1,7 +1,6 @@
 minecraft-protocol
 ============
 [![crates.io](https://img.shields.io/crates/v/minecraft-protocol.svg)](https://crates.io/crates/minecraft-protocol)
-[![Build Status](https://travis-ci.com/eihwaz/minecraft-protocol.svg?branch=master)](https://app.travis-ci.com/github/eihwaz/minecraft-protocol)
-[![codecov](https://codecov.io/gh/eihwaz/minecraft-protocol/branch/master/graph/badge.svg)](https://codecov.io/gh/eihwaz/minecraft-protocol)
+[![Build Status](https://travis-ci.com/eihwaz/minecraft-protocol.svg?branch=master)](https://travis-ci.com/eihwaz/minecraft-protocol)
 
 Library for decoding and encoding Minecraft packets

generate.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cargo run
+cargo fmt

protocol-derive/Cargo.toml

@@ -7,7 +7,7 @@ description = "Derive macro for reading and writing Minecraft packets"
 license = "MIT"
 homepage = "https://github.com/eihwaz/minecraft-protocol"
 repository = "https://github.com/eihwaz/minecraft-protocol"
-keywords = ["minecraft", "protocol", "packet", "io"]
+keywords = ["minecraft", "derive", "protocol", "packet", "io"]
 
 [lib]
 proc-macro = true

protocol-derive/src/error.rs

@@ -1,44 +0,0 @@
-use syn::Error as SynError;
-
-/// Possible errors while deriving.
-#[derive(Debug)]
-pub(crate) enum DeriveInputParserError {
-    /// Derive attribute must be placed on a structure or enum.
-    UnsupportedData,
-    /// Data fields must be named.
-    UnnamedDataFields,
-    /// Possible errors while parsing attributes.
-    AttributeError { attribute_error: AttributeError },
-}
-
-/// Possible errors while parsing attributes.
-#[derive(Debug)]
-pub(crate) enum AttributeError {
-    /// Failed to parse field meta due incorrect syntax.
-    BadAttributeSyntax { syn_error: SynError },
-    /// Unsupported field attribute type.
-    UnsupportedAttribute,
-    /// Field meta has wrong value type.
-    /// For example an int was expected, but a string was supplied.
-    AttributeWrongValueType,
-}
-
-impl From<AttributeError> for DeriveInputParserError {
-    fn from(attribute_error: AttributeError) -> Self {
-        DeriveInputParserError::AttributeError { attribute_error }
-    }
-}
-
-impl From<SynError> for DeriveInputParserError {
-    fn from(syn_error: SynError) -> Self {
-        DeriveInputParserError::AttributeError {
-            attribute_error: AttributeError::BadAttributeSyntax { syn_error },
-        }
-    }
-}
-
-impl From<SynError> for AttributeError {
-    fn from(syn_error: SynError) -> Self {
-        AttributeError::BadAttributeSyntax { syn_error }
-    }
-}

protocol-derive/src/lib.rs

@@ -1,42 +1,186 @@
 extern crate proc_macro;
 
-use crate::parse::{parse_derive_input, DeriveInputParseResult};
-use crate::render::decoder::{render_enum_decoder, render_struct_decoder};
-use crate::render::encoder::{render_enum_encoder, render_struct_encoder};
-use proc_macro::TokenStream;
-use syn::parse_macro_input;
-use syn::DeriveInput;
+use proc_macro::TokenStream as TokenStream1;
+use proc_macro2::Ident;
+use proc_macro2::TokenStream as TokenStream2;
+use quote::{quote, TokenStreamExt};
+use std::iter::FromIterator;
+use syn::__private::Span;
+use syn::{parse_macro_input, Data, DeriveInput, Field, Fields, Lit, Meta, NestedMeta};
 
-mod error;
-mod parse;
-mod render;
+#[proc_macro_derive(Packet, attributes(packet))]
+pub fn derive_packet(input: proc_macro::TokenStream) -> TokenStream1 {
+    let input = parse_macro_input!(input as DeriveInput);
+    let name = &input.ident;
 
-#[proc_macro_derive(Encoder, attributes(data_type))]
-pub fn derive_encoder(tokens: TokenStream) -> TokenStream {
-    let input = parse_macro_input!(tokens as DeriveInput);
-    let derive_parse_result = parse_derive_input(&input).expect("Failed to parse derive input");
+    match input.data {
+        Data::Struct(data) => {
+            let fields = &data.fields;
 
-    TokenStream::from(match derive_parse_result {
-        DeriveInputParseResult::Struct { name, fields } => render_struct_encoder(name, &fields),
-        DeriveInputParseResult::Enum {
-            name,
-            discriminant_type,
-            variants,
-        } => render_enum_encoder(name, &discriminant_type, &variants),
-    })
+            let encoder = impl_encoder_trait(name, fields);
+            let decoder = impl_decoder_trait(name, fields);
+
+            TokenStream1::from(quote! {
+                #encoder
+
+                #decoder
+            })
+        }
+        _ => panic!("Expected only structures"),
+    }
 }
 
-#[proc_macro_derive(Decoder, attributes(data_type))]
-pub fn derive_decoder(tokens: TokenStream) -> TokenStream {
-    let input = parse_macro_input!(tokens as DeriveInput);
-    let derive_parse_result = parse_derive_input(&input).expect("Failed to parse derive input");
+fn impl_encoder_trait(name: &Ident, fields: &Fields) -> TokenStream2 {
+    let encode = quote_field(fields, |field| {
+        let name = &field.ident;
 
-    TokenStream::from(match derive_parse_result {
-        DeriveInputParseResult::Struct { name, fields } => render_struct_decoder(name, &fields),
-        DeriveInputParseResult::Enum {
-            name,
-            discriminant_type,
-            variants,
-        } => render_enum_decoder(name, &discriminant_type, &variants),
-    })
+        let unparsed_meta = get_packet_field_meta(field);
+        let parsed_meta = parse_packet_field_meta(&unparsed_meta);
+
+        // This is special case because max length are used only for strings.
+        if let Some(max_length) = parsed_meta.max_length {
+            return quote! {
+                crate::EncoderWriteExt::write_string(writer, &self.#name, #max_length)?;
+            };
+        }
+
+        let module = parsed_meta.module.as_deref().unwrap_or("Encoder");
+        let module_ident = Ident::new(&module, Span::call_site());
+
+        quote! {
+            crate::#module_ident::encode(&self.#name, writer)?;
+        }
+    });
+
+    quote! {
+        #[automatically_derived]
+        impl crate::Encoder for #name {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::EncodeError> {
+                #encode
+
+                Ok(())
+            }
+        }
+    }
+}
+
+fn impl_decoder_trait(name: &Ident, fields: &Fields) -> TokenStream2 {
+    let decode = quote_field(fields, |field| {
+        let name = &field.ident;
+        let ty = &field.ty;
+
+        let unparsed_meta = get_packet_field_meta(field);
+        let parsed_meta = parse_packet_field_meta(&unparsed_meta);
+
+        // This is special case because max length are used only for strings.
+        if let Some(max_length) = parsed_meta.max_length {
+            return quote! {
+                let #name = crate::DecoderReadExt::read_string(reader, #max_length)?;
+            };
+        }
+
+        match parsed_meta.module {
+            Some(module) => {
+                let module_ident = Ident::new(&module, Span::call_site());
+
+                quote! {
+                    let #name = crate::#module_ident::decode(reader)?;
+                }
+            }
+            None => {
+                quote! {
+                    let #name = <#ty as crate::Decoder>::decode(reader)?;
+                }
+            }
+        }
+    });
+
+    let create = quote_field(fields, |field| {
+        let name = &field.ident;
+
+        quote! {
+             #name,
+        }
+    });
+
+    quote! {
+        #[automatically_derived]
+        impl crate::Decoder for #name {
+            type Output = Self;
+
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::DecodeError> {
+                #decode
+
+                Ok(#name {
+                    #create
+                })
+            }
+        }
+    }
+}
+
+#[derive(Debug)]
+struct PacketFieldMeta {
+    module: Option<String>,
+    max_length: Option<u16>,
+}
+
+fn parse_packet_field_meta(meta_list: &Vec<NestedMeta>) -> PacketFieldMeta {
+    let mut module = None;
+    let mut max_length = None;
+
+    for meta in meta_list {
+        match meta {
+            NestedMeta::Meta(Meta::NameValue(named_meta)) => match &named_meta.path {
+                path if path.is_ident("with") => match &named_meta.lit {
+                    Lit::Str(lit_str) => module = Some(lit_str.value()),
+                    _ => panic!("\"with\" attribute value must be string"),
+                },
+                path if path.is_ident("max_length") => match &named_meta.lit {
+                    Lit::Int(lit_int) => {
+                        max_length = Some(
+                            lit_int
+                                .base10_parse::<u16>()
+                                .expect("Failed to parse max length attribute"),
+                        )
+                    }
+                    _ => panic!("\"max_length\" attribute value must be integer"),
+                },
+                path => panic!(
+                    "Received unrecognized attribute : \"{}\"",
+                    path.get_ident().unwrap()
+                ),
+            },
+            _ => panic!("Expected only named meta values"),
+        }
+    }
+
+    PacketFieldMeta { module, max_length }
+}
+
+fn get_packet_field_meta(field: &Field) -> Vec<NestedMeta> {
+    field
+        .attrs
+        .iter()
+        .filter(|a| a.path.is_ident("packet"))
+        .map(|a| a.parse_meta().expect("Failed to parse field attribute"))
+        .map(|m| match m {
+            Meta::List(meta_list) => Vec::from_iter(meta_list.nested),
+            _ => panic!("Expected only list attributes"),
+        })
+        .flatten()
+        .collect()
+}
+
+fn quote_field<F: Fn(&Field) -> TokenStream2>(fields: &Fields, func: F) -> TokenStream2 {
+    let mut output = quote!();
+
+    match fields {
+        Fields::Named(named_fields) => {
+            output.append_all(named_fields.named.iter().map(|f| func(f)))
+        }
+        _ => panic!("Expected only for named fields"),
+    }
+
+    output
 }

protocol-derive/src/parse.rs

@@ -1,291 +0,0 @@
-use crate::error::{AttributeError, DeriveInputParserError};
-use proc_macro2::Ident;
-use std::iter::FromIterator;
-use syn::punctuated::Punctuated;
-use syn::{
-    Attribute, Data, DeriveInput, ExprLit, Field, Fields, FieldsNamed, Lit, Meta, NestedMeta, Type,
-};
-use syn::{Error as SynError, Variant};
-use syn::{Expr, Token};
-
-pub(crate) enum DeriveInputParseResult<'a> {
-    Struct {
-        name: &'a Ident,
-        fields: Vec<FieldData<'a>>,
-    },
-    Enum {
-        name: &'a Ident,
-        discriminant_type: DiscriminantType,
-        variants: Vec<VariantData<'a>>,
-    },
-}
-
-pub(crate) struct VariantData<'a> {
-    pub(crate) discriminant: usize,
-    pub(crate) name: &'a Ident,
-    pub(crate) fields: Vec<FieldData<'a>>,
-}
-
-pub(crate) struct FieldData<'a> {
-    pub(crate) name: &'a Ident,
-    pub(crate) ty: &'a Type,
-    pub(crate) attribute: AttributeData,
-}
-
-#[derive(Debug, Eq, PartialEq)]
-pub(crate) enum AttributeData {
-    With { module: String },
-    MaxLength { length: usize },
-    Bitfield { idx: u8, position: BitfieldPosition },
-    Empty,
-}
-
-#[derive(Debug, Eq, PartialEq)]
-pub(crate) enum DiscriminantType {
-    UnsignedByte,
-    VarInt,
-}
-
-#[derive(Debug, Eq, PartialEq)]
-pub(crate) enum BitfieldPosition {
-    Start,
-    Intermediate,
-    End,
-}
-
-pub(crate) fn parse_derive_input(
-    input: &DeriveInput,
-) -> Result<DeriveInputParseResult, DeriveInputParserError> {
-    let name = &input.ident;
-
-    match &input.data {
-        Data::Struct(data_struct) => match &data_struct.fields {
-            Fields::Named(named_fields) => {
-                let fields = parse_fields(named_fields)?;
-
-                Ok(DeriveInputParseResult::Struct { name, fields })
-            }
-            _ => Err(DeriveInputParserError::UnnamedDataFields),
-        },
-        Data::Enum(data_enum) => {
-            let variants = parse_variants(&data_enum.variants)?;
-            let discriminant_type = parse_discriminant_type(&input.attrs)?;
-
-            Ok(DeriveInputParseResult::Enum {
-                name,
-                discriminant_type,
-                variants,
-            })
-        }
-        _ => Err(DeriveInputParserError::UnsupportedData),
-    }
-}
-
-fn parse_discriminant_type(
-    attributes: &Vec<Attribute>,
-) -> Result<DiscriminantType, DeriveInputParserError> {
-    let nested_metas = parse_attributes_nested_metas(attributes)?;
-    let attribute = parse_attribute(nested_metas, None, 0)?;
-
-    match attribute {
-        AttributeData::With { module } if module == "var_int" => Ok(DiscriminantType::VarInt),
-        _ => Ok(DiscriminantType::UnsignedByte),
-    }
-}
-
-fn parse_variants(
-    variants: &Punctuated<Variant, Token![,]>,
-) -> Result<Vec<VariantData>, DeriveInputParserError> {
-    variants
-        .iter()
-        .enumerate()
-        .map(|(idx, v)| parse_variant(idx, v))
-        .collect()
-}
-
-fn parse_variant(idx: usize, variant: &Variant) -> Result<VariantData, DeriveInputParserError> {
-    let discriminant = parse_variant_discriminant(variant).unwrap_or(idx);
-    let name = &variant.ident;
-
-    let fields = match &variant.fields {
-        Fields::Named(named_fields) => parse_fields(named_fields),
-        Fields::Unit => Ok(Vec::new()),
-        _ => Err(DeriveInputParserError::UnnamedDataFields),
-    }?;
-
-    Ok(VariantData {
-        discriminant,
-        name,
-        fields,
-    })
-}
-
-fn parse_variant_discriminant(variant: &Variant) -> Option<usize> {
-    variant
-        .discriminant
-        .as_ref()
-        .and_then(|(_, expr)| match expr {
-            Expr::Lit(ExprLit {
-                lit: Lit::Int(lit_int),
-                ..
-            }) => lit_int.base10_parse().ok(),
-            _ => None,
-        })
-}
-
-fn parse_fields(named_fields: &FieldsNamed) -> Result<Vec<FieldData>, DeriveInputParserError> {
-    let mut fields_data = Vec::new();
-    let mut current_bitfield_idx = 0;
-
-    let fields: Vec<&Field> = named_fields.named.iter().collect();
-
-    for (idx, field) in fields.iter().enumerate() {
-        let name = field.ident.as_ref().unwrap();
-        let ty = &field.ty;
-
-        let nested_metas = parse_attributes_nested_metas(&field.attrs)?;
-
-        let next_field_opt = fields.get(idx + 1);
-        let next_nested_metas_opt = next_field_opt
-            .and_then(|next_field| parse_attributes_nested_metas(&next_field.attrs).ok());
-
-        let attribute = parse_attribute(nested_metas, next_nested_metas_opt, current_bitfield_idx)?;
-
-        match attribute {
-            AttributeData::Bitfield { .. } => current_bitfield_idx += 1,
-            _ => current_bitfield_idx = 0,
-        }
-
-        fields_data.push(FieldData {
-            name,
-            ty,
-            attribute,
-        })
-    }
-
-    Ok(fields_data)
-}
-
-fn parse_attributes_nested_metas(
-    attributes: &Vec<Attribute>,
-) -> Result<Vec<NestedMeta>, DeriveInputParserError> {
-    let parsed_metas = attributes
-        .iter()
-        .filter(|a| a.path.is_ident("data_type"))
-        .map(|a| a.parse_meta())
-        .collect::<Result<Vec<Meta>, SynError>>()?;
-
-    let nested_metas = parsed_metas
-        .into_iter()
-        .map(|m| match m {
-            Meta::List(meta_list) => Ok(Vec::from_iter(meta_list.nested)),
-            _ => Err(AttributeError::UnsupportedAttribute),
-        })
-        .collect::<Result<Vec<Vec<NestedMeta>>, AttributeError>>()?;
-
-    Ok(nested_metas.into_iter().flatten().collect())
-}
-
-fn parse_attribute(
-    nested_metas: Vec<NestedMeta>,
-    next_nested_metas_opt: Option<Vec<NestedMeta>>,
-    current_bitfield_idx: u8,
-) -> Result<AttributeData, DeriveInputParserError> {
-    let simple_attribute_parsers: Vec<fn(&NestedMeta) -> Result<AttributeData, AttributeError>> =
-        vec![get_module_attribute, get_max_length_attribute];
-
-    for nested_meta in nested_metas.iter() {
-        let bitfield_attribute =
-            get_bitfield_attribute(current_bitfield_idx, nested_meta, &next_nested_metas_opt);
-
-        if bitfield_attribute != AttributeData::Empty {
-            return Ok(bitfield_attribute);
-        }
-
-        for attribute_parser in simple_attribute_parsers.iter() {
-            let attribute = attribute_parser(nested_meta)?;
-
-            if attribute != AttributeData::Empty {
-                return Ok(attribute);
-            }
-        }
-    }
-
-    Ok(AttributeData::Empty)
-}
-
-fn get_module_attribute(nested_meta: &NestedMeta) -> Result<AttributeData, AttributeError> {
-    if let NestedMeta::Meta(Meta::NameValue(named_meta)) = nested_meta {
-        if matches!(&named_meta.path, path if path.is_ident("with")) {
-            return match &named_meta.lit {
-                Lit::Str(lit_str) => Ok(AttributeData::With {
-                    module: lit_str.value(),
-                }),
-                _ => Err(AttributeError::AttributeWrongValueType),
-            };
-        }
-    }
-
-    Ok(AttributeData::Empty)
-}
-
-fn get_max_length_attribute(nested_meta: &NestedMeta) -> Result<AttributeData, AttributeError> {
-    if let NestedMeta::Meta(Meta::NameValue(named_meta)) = nested_meta {
-        if matches!(&named_meta.path, path if path.is_ident("max_length")) {
-            return match &named_meta.lit {
-                Lit::Int(lit_int) => Ok(AttributeData::MaxLength {
-                    length: lit_int.base10_parse()?,
-                }),
-                _ => Err(AttributeError::AttributeWrongValueType),
-            };
-        }
-    }
-
-    Ok(AttributeData::Empty)
-}
-
-fn get_bitfield_attribute(
-    current_bitfield_idx: u8,
-    nested_meta: &NestedMeta,
-    next_nested_metas_opt: &Option<Vec<NestedMeta>>,
-) -> AttributeData {
-    if is_bitfield_attribute(nested_meta) {
-        let position = calc_bitfield_position(current_bitfield_idx, next_nested_metas_opt);
-
-        AttributeData::Bitfield {
-            idx: current_bitfield_idx,
-            position,
-        }
-    } else {
-        AttributeData::Empty
-    }
-}
-
-fn calc_bitfield_position(
-    current_bitfield_idx: u8,
-    next_nested_metas_opt: &Option<Vec<NestedMeta>>,
-) -> BitfieldPosition {
-    fn next_has_bitfield_attribute(next_nested_metas: &Vec<NestedMeta>) -> bool {
-        next_nested_metas
-            .iter()
-            .any(|nested_meta| is_bitfield_attribute(nested_meta))
-    }
-
-    match next_nested_metas_opt {
-        Some(next_nested_metas) if (next_has_bitfield_attribute(&next_nested_metas)) => {
-            if current_bitfield_idx == 0 {
-                BitfieldPosition::Start
-            } else {
-                BitfieldPosition::Intermediate
-            }
-        }
-        _ => BitfieldPosition::End,
-    }
-}
-
-fn is_bitfield_attribute(nested_meta: &NestedMeta) -> bool {
-    match nested_meta {
-        NestedMeta::Meta(Meta::Path(path)) => path.is_ident("bitfield"),
-        _ => false,
-    }
-}

protocol-derive/src/render/decoder.rs

@@ -1,185 +0,0 @@
-use crate::parse::{AttributeData, BitfieldPosition, DiscriminantType, FieldData, VariantData};
-use proc_macro2::TokenStream as TokenStream2;
-use proc_macro2::{Ident, Span};
-use quote::quote;
-use syn::Type;
-
-pub(crate) fn render_struct_decoder(name: &Ident, fields: &Vec<FieldData>) -> TokenStream2 {
-    let field_names_joined_comma = render_field_names_joined_comma(fields);
-    let render_fields = render_fields(fields);
-
-    quote! {
-        #[automatically_derived]
-        impl crate::decoder::Decoder for #name {
-            type Output = Self;
-
-            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
-                #render_fields
-
-                Ok(#name {
-                    #field_names_joined_comma
-                })
-            }
-        }
-    }
-}
-
-pub(crate) fn render_enum_decoder(
-    name: &Ident,
-    discriminant_type: &DiscriminantType,
-    variants: &Vec<VariantData>,
-) -> TokenStream2 {
-    let render_variants = render_variants(discriminant_type, variants);
-    let render_discriminant_type = render_discriminant_type(discriminant_type);
-
-    quote! {
-        #[automatically_derived]
-        impl crate::decoder::Decoder for #name {
-            type Output = Self;
-
-            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
-                let type_id = #render_discriminant_type;
-
-                match type_id {
-                    #render_variants
-                    _ => Err(DecodeError::UnknownEnumType { type_id: type_id as usize, }),
-                }
-            }
-        }
-    }
-}
-
-fn render_variants(
-    discriminant_type: &DiscriminantType,
-    variants: &Vec<VariantData>,
-) -> TokenStream2 {
-    variants
-        .iter()
-        .map(|v| render_variant(discriminant_type, v))
-        .collect()
-}
-
-fn render_variant(discriminant_type: &DiscriminantType, variant: &VariantData) -> TokenStream2 {
-    if variant.fields.is_empty() {
-        render_unit_variant(discriminant_type, variant)
-    } else {
-        render_struct_variant(discriminant_type, variant)
-    }
-}
-
-fn render_unit_variant(
-    discriminant_type: &DiscriminantType,
-    variant: &VariantData,
-) -> TokenStream2 {
-    let discriminant = render_discriminant(discriminant_type, variant.discriminant);
-    let name = variant.name;
-
-    quote! {
-        #discriminant => Ok(Self::#name),
-    }
-}
-
-fn render_struct_variant(
-    discriminant_type: &DiscriminantType,
-    variant: &VariantData,
-) -> TokenStream2 {
-    let discriminant = render_discriminant(discriminant_type, variant.discriminant);
-    let name = variant.name;
-    let fields = &variant.fields;
-
-    let field_names_joined_comma = render_field_names_joined_comma(fields);
-    let render_fields = render_fields(fields);
-
-    quote! {
-        #discriminant => {
-            #render_fields
-
-            Ok(Self::#name {
-                #field_names_joined_comma
-            })
-        }
-    }
-}
-
-fn render_discriminant_type(discriminant_type: &DiscriminantType) -> TokenStream2 {
-    match discriminant_type {
-        DiscriminantType::UnsignedByte => {
-            quote!(reader.read_u8()?;)
-        }
-        DiscriminantType::VarInt => {
-            quote!(reader.read_var_i32()?;)
-        }
-    }
-}
-
-fn render_discriminant(discriminant_type: &DiscriminantType, discriminant: usize) -> TokenStream2 {
-    match discriminant_type {
-        DiscriminantType::UnsignedByte => {
-            let u8 = discriminant as u8;
-            quote!(#u8)
-        }
-        DiscriminantType::VarInt => {
-            let i32 = discriminant as i32;
-            quote!(#i32)
-        }
-    }
-}
-
-fn render_field_names_joined_comma(fields: &Vec<FieldData>) -> TokenStream2 {
-    fields.iter().map(|f| f.name).map(|n| quote!(#n,)).collect()
-}
-
-fn render_fields(fields: &Vec<FieldData>) -> TokenStream2 {
-    fields.iter().map(|f| render_field(f)).collect()
-}
-
-fn render_field(field: &FieldData) -> TokenStream2 {
-    let name = field.name;
-    let ty = field.ty;
-
-    match &field.attribute {
-        AttributeData::With { module } => render_with_field(name, module),
-        AttributeData::MaxLength { length } => render_max_length_field(name, *length as u16),
-        AttributeData::Bitfield { idx, position } => render_bitfield(name, *idx, position),
-        AttributeData::Empty => render_simple_field(name, ty),
-    }
-}
-
-fn render_simple_field(name: &Ident, ty: &Type) -> TokenStream2 {
-    quote! {
-        let #name = <#ty as crate::decoder::Decoder>::decode(reader)?;
-    }
-}
-
-fn render_with_field(name: &Ident, module: &str) -> TokenStream2 {
-    let module_ident = Ident::new(module, Span::call_site());
-
-    quote! {
-        let #name = crate::decoder::#module_ident::decode(reader)?;
-    }
-}
-
-fn render_max_length_field(name: &Ident, max_length: u16) -> TokenStream2 {
-    quote! {
-        let #name = crate::decoder::DecoderReadExt::read_string(reader, #max_length)?;
-    }
-}
-
-fn render_bitfield(name: &Ident, idx: u8, position: &BitfieldPosition) -> TokenStream2 {
-    let mask = 1u8 << idx;
-
-    let render_mask = quote! {
-        let #name = flags & #mask > 0;
-    };
-
-    match position {
-        BitfieldPosition::Start => {
-            quote! {
-              let flags = reader.read_u8()?;
-
-              #render_mask
-            }
-        }
-        _ => render_mask,
-    }
-}

protocol-derive/src/render/encoder.rs

@@ -1,191 +0,0 @@
-use crate::parse::{AttributeData, BitfieldPosition, DiscriminantType, FieldData, VariantData};
-use proc_macro2::TokenStream as TokenStream2;
-use proc_macro2::{Ident, Span};
-use quote::quote;
-
-pub(crate) fn render_struct_encoder(name: &Ident, fields: &Vec<FieldData>) -> TokenStream2 {
-    let render_fields = render_fields(fields, true);
-
-    quote! {
-        #[automatically_derived]
-        impl crate::encoder::Encoder for #name {
-            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
-                #render_fields
-
-                Ok(())
-            }
-        }
-    }
-}
-
-pub(crate) fn render_enum_encoder(
-    name: &Ident,
-    discriminant_type: &DiscriminantType,
-    variants: &Vec<VariantData>,
-) -> TokenStream2 {
-    let render_variants = render_variants(discriminant_type, variants);
-
-    quote! {
-        #[automatically_derived]
-        impl crate::encoder::Encoder for #name {
-            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
-                match self {
-                    #render_variants
-                }
-
-                Ok(())
-            }
-        }
-    }
-}
-
-fn render_variants(
-    discriminant_type: &DiscriminantType,
-    variants: &Vec<VariantData>,
-) -> TokenStream2 {
-    variants
-        .iter()
-        .map(|v| render_variant(discriminant_type, v))
-        .collect()
-}
-
-fn render_variant(discriminant_type: &DiscriminantType, variant: &VariantData) -> TokenStream2 {
-    if variant.fields.is_empty() {
-        render_unit_variant(discriminant_type, variant)
-    } else {
-        render_struct_variant(discriminant_type, variant)
-    }
-}
-
-fn render_unit_variant(
-    discriminant_type: &DiscriminantType,
-    variant: &VariantData,
-) -> TokenStream2 {
-    let discriminant = variant.discriminant;
-    let name = variant.name;
-
-    let render_discriminant_type = render_discriminant_type(discriminant_type, discriminant);
-
-    quote! {
-        Self::#name => {
-            #render_discriminant_type
-        }
-    }
-}
-
-fn render_struct_variant(
-    discriminant_type: &DiscriminantType,
-    variant: &VariantData,
-) -> TokenStream2 {
-    let discriminant = variant.discriminant;
-    let name = variant.name;
-    let fields = &variant.fields;
-
-    let render_discriminant_type = render_discriminant_type(discriminant_type, discriminant);
-    let field_names_joined_comma = render_field_names_joined_comma(fields);
-    let render_fields = render_fields(fields, false);
-
-    quote! {
-        Self::#name {
-            #field_names_joined_comma
-        } => {
-            #render_discriminant_type
-
-            #render_fields
-        }
-    }
-}
-
-fn render_discriminant_type(
-    discriminant_type: &DiscriminantType,
-    discriminant: usize,
-) -> TokenStream2 {
-    match discriminant_type {
-        DiscriminantType::UnsignedByte => {
-            let u8 = discriminant as u8;
-
-            quote!(writer.write_u8(#u8)?;)
-        }
-        DiscriminantType::VarInt => {
-            let var_i32 = discriminant as i32;
-
-            quote!(writer.write_var_i32(#var_i32)?;)
-        }
-    }
-}
-
-fn render_field_names_joined_comma(fields: &Vec<FieldData>) -> TokenStream2 {
-    fields.iter().map(|f| f.name).map(|n| quote!(#n,)).collect()
-}
-
-fn render_fields(fields: &Vec<FieldData>, with_self: bool) -> TokenStream2 {
-    fields.iter().map(|f| render_field(f, with_self)).collect()
-}
-
-fn render_field(field: &FieldData, with_self: bool) -> TokenStream2 {
-    let name = field.name;
-
-    match &field.attribute {
-        AttributeData::With { module } => render_with_field(name, module, with_self),
-        AttributeData::MaxLength { length } => {
-            render_max_length_field(name, *length as u16, with_self)
-        }
-        AttributeData::Bitfield { idx, position } => render_bitfield(name, *idx, position),
-        AttributeData::Empty => render_simple_field(name, with_self),
-    }
-}
-
-fn render_simple_field(name: &Ident, with_self: bool) -> TokenStream2 {
-    render_with_field(name, "Encoder", with_self)
-}
-
-fn render_with_field(name: &Ident, module: &str, with_self: bool) -> TokenStream2 {
-    let module_ident = Ident::new(module, Span::call_site());
-    let final_name = get_field_final_name(name, with_self);
-
-    quote! {
-        crate::encoder::#module_ident::encode(#final_name, writer)?;
-    }
-}
-
-fn render_max_length_field(name: &Ident, max_length: u16, with_self: bool) -> TokenStream2 {
-    let final_name = get_field_final_name(name, with_self);
-
-    quote! {
-        crate::encoder::EncoderWriteExt::write_string(writer, #final_name, #max_length)?;
-    }
-}
-
-fn render_bitfield(name: &Ident, idx: u8, position: &BitfieldPosition) -> TokenStream2 {
-    let mask = 1u8 << idx;
-
-    let render_mask = quote! {
-        if self.#name {
-            flags |= #mask;
-        }
-    };
-
-    match position {
-        BitfieldPosition::Start => quote!(
-            let mut flags = 0;
-
-            #render_mask
-        ),
-        BitfieldPosition::Intermediate => render_mask,
-        BitfieldPosition::End => {
-            quote! {
-                #render_mask
-
-                writer.write_u8(flags)?;
-            }
-        }
-    }
-}
-
-fn get_field_final_name(name: &Ident, with_self: bool) -> TokenStream2 {
-    if with_self {
-        quote!(&self.#name)
-    } else {
-        quote!(#name)
-    }
-}

protocol-derive/src/render/mod.rs

@@ -1,2 +0,0 @@
-pub(crate) mod decoder;
-pub(crate) mod encoder;

protocol-generator/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "minecraft-protocol-generator"
+version = "0.0.0"
+authors = ["vagola <vladislavs.golubs@yandex.ru>"]
+edition = "2018"
+description = "CLI for generating Rust code with Minecraft packets"
+license = "MIT"
+homepage = "https://github.com/eihwaz/minecraft-protocol"
+repository = "https://github.com/eihwaz/minecraft-protocol"
+keywords = ["minecraft", "cli", "protocol", "packet", "io"]
+
+[dependencies]
+serde = "1.0.120"
+serde_json = "1.0"
+handlebars = "3.5.2"
+heck = "0.3.2"
+linked-hash-map = { version = "0.5.4", features = ["serde_impl"] }

protocol-generator/minecraft-data

@@ -0,0 +1 @@
+Subproject commit cc155f399397755abeb9275de40fc82b65a252f4

protocol-generator/src/backend.rs

@@ -0,0 +1,101 @@
+use linked_hash_map::LinkedHashMap;
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize)]
+pub struct ProtocolHandler {
+    pub handshaking: Protocol,
+    pub status: Protocol,
+    pub login: Protocol,
+    #[serde(rename = "play")]
+    pub game: Protocol,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Protocol {
+    pub to_client: Packets,
+    pub to_server: Packets,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Packets {
+    pub types: LinkedHashMap<String, Vec<Data>>,
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq)]
+#[serde(untagged)]
+pub enum Data {
+    Type(String),
+    Containers(Vec<Container>),
+    Container(Box<Container>),
+    Mapper {
+        #[serde(rename = "type")]
+        mappings_type: String,
+        mappings: LinkedHashMap<String, String>,
+    },
+    Switch(Switch),
+    List(Box<List>),
+    Bitfield(Vec<BitField>),
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq)]
+#[serde(untagged)]
+pub enum Container {
+    Value {
+        name: String,
+        #[serde(rename = "type")]
+        data: Data,
+    },
+    List {
+        name: Option<String>,
+        #[serde(rename = "type")]
+        data_vec: Vec<Data>,
+    },
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq)]
+#[serde(untagged)]
+pub enum Switch {
+    Value {
+        #[serde(rename = "compareTo")]
+        compare_to: String,
+        fields: LinkedHashMap<String, Data>,
+    },
+    List {
+        #[serde(rename = "compareTo")]
+        compare_to: String,
+        fields: LinkedHashMap<String, Vec<Data>>,
+    },
+    Empty {
+        #[serde(rename = "compareTo")]
+        compare_to: String,
+    },
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq)]
+#[serde(untagged)]
+pub enum List {
+    Value {
+        #[serde(rename = "countType")]
+        count_type: String,
+        #[serde(rename = "type")]
+        list_type: Data,
+    },
+    List {
+        #[serde(rename = "countType")]
+        count_type: String,
+        #[serde(rename = "type")]
+        list_type: Vec<Data>,
+    },
+    Empty {
+        #[serde(rename = "countType")]
+        count_type: String,
+    },
+}
+
+#[derive(Debug, Deserialize, PartialEq, Eq)]
+pub struct BitField {
+    name: String,
+    size: usize,
+    signed: bool,
+}

protocol-generator/src/frontend.rs

@@ -0,0 +1,309 @@
+use crate::mappings::Mappings;
+use crate::{backend, frontend, transformers};
+use handlebars::{Handlebars, TemplateRenderError};
+use serde::Serialize;
+use serde_json::json;
+use std::collections::{HashMap, HashSet};
+use std::fmt;
+use std::fmt::Display;
+use std::fs::{create_dir_all, File};
+use std::io::Write;
+use std::path::Path;
+
+#[derive(Debug)]
+pub enum State {
+    Handshake,
+    Status,
+    Login,
+    Game,
+}
+
+impl State {
+    pub fn data_import(&self) -> &'static str {
+        match self {
+            State::Handshake => "crate::data::handshake::*",
+            State::Status => "crate::data::status::*",
+            State::Login => "crate::data::login::*",
+            State::Game => "crate::data::game::*",
+        }
+    }
+}
+
+impl Display for State {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let name = match self {
+            State::Handshake => "Handshake",
+            State::Status => "Status",
+            State::Login => "Login",
+            State::Game => "Game",
+        };
+
+        write!(f, "{}", name)
+    }
+}
+
+pub enum Bound {
+    Server,
+    Client,
+}
+
+impl Display for Bound {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let name = match self {
+            Bound::Server => "Server",
+            Bound::Client => "Client",
+        };
+
+        write!(f, "{}", name)
+    }
+}
+
+#[derive(Serialize, Debug)]
+pub struct Packet {
+    pub id: u8,
+    pub name: String,
+    pub fields: Vec<Field>,
+}
+
+impl Packet {
+    pub fn new(id: u8, name: impl ToString, fields: Vec<Field>) -> Packet {
+        Packet {
+            id,
+            name: name.to_string(),
+            fields,
+        }
+    }
+}
+
+#[derive(Serialize, Debug)]
+pub struct Field {
+    pub name: String,
+    #[serde(flatten)]
+    pub data_type: DataType,
+}
+
+impl Field {
+    pub fn new(name: impl ToString, data_type: DataType) -> Field {
+        Field {
+            name: name.to_string(),
+            data_type,
+        }
+    }
+
+    pub fn change_type(&self, data_type: DataType) -> Field {
+        Field::new(&self.name, data_type)
+    }
+}
+
+#[derive(Serialize, Eq, PartialEq, Debug)]
+#[serde(tag = "type")]
+pub enum DataType {
+    #[serde(rename(serialize = "bool"))]
+    Boolean,
+    #[serde(rename(serialize = "i8"))]
+    Byte,
+    #[serde(rename(serialize = "u8"))]
+    UnsignedByte,
+    #[serde(rename(serialize = "i16"))]
+    Short,
+    #[serde(rename(serialize = "u16"))]
+    UnsignedShort,
+    #[serde(rename(serialize = "i32"))]
+    Int {
+        var_int: bool,
+    },
+    #[serde(rename(serialize = "u32"))]
+    UnsignedInt,
+    #[serde(rename(serialize = "i64"))]
+    Long {
+        var_long: bool,
+    },
+    #[serde(rename(serialize = "f32"))]
+    Float,
+    #[serde(rename(serialize = "f64"))]
+    Double,
+    String {
+        max_length: u16,
+    },
+    Uuid {
+        hyphenated: bool,
+    },
+    #[serde(rename(serialize = "Vec<u8>"))]
+    ByteArray {
+        rest: bool,
+    },
+    CompoundTag,
+    RefType {
+        ref_name: String,
+    },
+    #[serde(rename(serialize = "Message"))]
+    Chat,
+}
+
+impl DataType {
+    pub fn import(&self, state: &State) -> Option<&'static str> {
+        match self {
+            DataType::Uuid { .. } => Some("uuid::Uuid"),
+            DataType::CompoundTag => Some("nbt::CompoundTag"),
+            DataType::RefType { .. } => Some(state.data_import()),
+            DataType::Chat => Some("crate::data::chat::Message"),
+            _ => None,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct Protocol {
+    pub server_bound_packets: Vec<Packet>,
+    pub client_bound_packets: Vec<Packet>,
+}
+
+impl Protocol {
+    pub fn new(server_bound_packets: Vec<Packet>, client_bound_packets: Vec<Packet>) -> Protocol {
+        Protocol {
+            server_bound_packets,
+            client_bound_packets,
+        }
+    }
+
+    pub fn data_type_imports(&self, state: &State) -> HashSet<&'static str> {
+        self.server_bound_packets
+            .iter()
+            .chain(self.client_bound_packets.iter())
+            .flat_map(|p| p.fields.iter())
+            .filter_map(|f| f.data_type.import(state))
+            .collect()
+    }
+}
+
+pub fn generate_rust_files<M: Mappings>(
+    versions_data: HashMap<String, File>,
+    template_engine: &Handlebars,
+    mappings: &M,
+) -> Result<(), TemplateRenderError> {
+    generate_versions_module_file(template_engine, versions_data.keys().cloned().collect())?;
+
+    for (version, data_file) in versions_data.iter() {
+        println!("Generating protocol data for version {}", version);
+
+        let protocol_handler: backend::ProtocolHandler =
+            serde_json::from_reader(data_file).expect("Failed to parse protocol data");
+
+        let frontend_protocols =
+            transformers::transform_protocol_handler(mappings, &protocol_handler);
+
+        let formatted_version = version.replace(".", "_").replace("-", "_");
+
+        let folder_name = format!("protocol/src/version/v_{}", formatted_version);
+        let folder_path = Path::new(&folder_name);
+
+        generate_protocol_module_file(template_engine, &folder_path)?;
+
+        for (protocol, state) in frontend_protocols {
+            let file_name = format!("{}.rs", state.to_string().to_lowercase());
+
+            let mut file = File::create(folder_path.join(file_name))
+                .expect("Failed to create protocol enum file");
+
+            generate_protocol_enum_header(template_engine, &protocol, &state, &mut file)?;
+
+            generate_protocol_enum_content(
+                template_engine,
+                &protocol.server_bound_packets,
+                &state,
+                &Bound::Server,
+                &mut file,
+            )?;
+
+            generate_protocol_enum_content(
+                template_engine,
+                &protocol.client_bound_packets,
+                &state,
+                &Bound::Client,
+                &mut file,
+            )?;
+
+            generate_packets_structs(template_engine, &protocol.server_bound_packets, &mut file)?;
+
+            generate_packets_structs(template_engine, &protocol.client_bound_packets, &mut file)?;
+        }
+    }
+
+    Ok(())
+}
+
+fn generate_versions_module_file(
+    template_engine: &Handlebars,
+    versions: Vec<String>,
+) -> Result<(), TemplateRenderError> {
+    let mut file =
+        File::create("protocol/src/version/mod.rs").expect("Failed to create versions module file");
+
+    let ctx = json!({ "versions": versions });
+
+    template_engine.render_to_write("protocol_versions_module", &ctx, &mut file)?;
+
+    Ok(())
+}
+
+fn generate_protocol_module_file(
+    template_engine: &Handlebars,
+    folder_path: &Path,
+) -> Result<(), TemplateRenderError> {
+    generate_module_file(template_engine, folder_path, "protocol_module")
+}
+
+fn generate_module_file(
+    template_engine: &Handlebars,
+    folder_path: &Path,
+    name: &str,
+) -> Result<(), TemplateRenderError> {
+    create_dir_all(folder_path).expect("Failed to create module folder");
+
+    let mut file = File::create(folder_path.join("mod.rs")).expect("Failed to create module file");
+
+    template_engine.render_to_write(name, &(), &mut file)?;
+
+    Ok(())
+}
+
+fn generate_protocol_enum_header<W: Write>(
+    template_engine: &Handlebars,
+    protocol: &frontend::Protocol,
+    state: &frontend::State,
+    write: &mut W,
+) -> Result<(), TemplateRenderError> {
+    let imports = protocol.data_type_imports(state);
+    let ctx = json!({ "imports": imports });
+
+    template_engine.render_to_write("protocol_header", &ctx, write)?;
+
+    Ok(())
+}
+
+fn generate_protocol_enum_content<W: Write>(
+    template_engine: &Handlebars,
+    packets: &Vec<Packet>,
+    state: &frontend::State,
+    bound: &frontend::Bound,
+    write: &mut W,
+) -> Result<(), TemplateRenderError> {
+    let protocol_enum_name = format!("{}Bound{}Packet", bound, state);
+    let ctx = json!({ "protocol_enum_name": protocol_enum_name, "packets": packets });
+
+    template_engine.render_to_write("protocol_enum", &ctx, write)?;
+
+    Ok(())
+}
+
+fn generate_packets_structs<W: Write>(
+    template_engine: &Handlebars,
+    packets: &Vec<Packet>,
+    write: &mut W,
+) -> Result<(), TemplateRenderError> {
+    let ctx = json!({ "packets": packets });
+
+    template_engine.render_to_write("packets_structs", &ctx, write)?;
+
+    Ok(())
+}

protocol-generator/src/main.rs

@@ -0,0 +1,57 @@
+use std::fs::File;
+
+use crate::mappings::CodeMappings;
+use std::fs;
+use std::io::Error;
+use std::path::Path;
+
+pub mod backend;
+pub mod frontend;
+pub mod mappings;
+pub mod templates;
+pub mod transformers;
+
+pub fn main() {
+    let paths = fs::read_dir("protocol-generator/minecraft-data/data/pc/")
+        .expect("Failed to open data folder");
+
+    let versions_data = paths
+        .into_iter()
+        .map(|entry| {
+            entry
+                .expect("Failed to get dir entry")
+                .file_name()
+                .into_string()
+                .expect("Failed to get version string")
+        })
+        .filter(|version| match version.as_str() {
+            "0.30c" => false, // A very old version with a lot of incompatibility.
+            "1.7" => false,   // Requires some fixes to support.
+            _ => true,
+        })
+        .filter_map(|version| {
+            let protocol_data_file_name = format!(
+                "protocol-generator/minecraft-data/data/pc/{}/protocol.json",
+                version
+            );
+
+            let protocol_data_file_path = Path::new(&protocol_data_file_name);
+
+            match protocol_data_file_path.exists() {
+                true => {
+                    let protocol_data_file = File::open(protocol_data_file_path)
+                        .expect("Failed to open protocol data file");
+
+                    Some((version, protocol_data_file))
+                }
+                false => None,
+            }
+        })
+        .collect();
+
+    let template_engine = templates::create_template_engine();
+    let mappings = CodeMappings::new();
+
+    frontend::generate_rust_files(versions_data, &template_engine, &mappings)
+        .expect("Failed to generate rust files");
+}

protocol-generator/src/mappings.rs

@@ -0,0 +1,71 @@
+use crate::backend;
+use crate::frontend;
+
+pub trait Mappings {
+    fn rename_packet(
+        &self,
+        unformatted_name: &str,
+        name: &str,
+        bound: &frontend::Bound,
+        protocol: &backend::Protocol,
+    ) -> String;
+
+    fn change_field_type(&self, packet_name: &str, field: frontend::Field) -> frontend::Field;
+}
+
+pub struct CodeMappings {}
+
+impl CodeMappings {
+    pub fn new() -> CodeMappings {
+        CodeMappings {}
+    }
+}
+
+impl Mappings for CodeMappings {
+    fn rename_packet(
+        &self,
+        unformatted_name: &str,
+        name: &str,
+        bound: &frontend::Bound,
+        protocol: &backend::Protocol,
+    ) -> String {
+        let new_name = match (name, bound) {
+            ("EncryptionBegin", frontend::Bound::Server) => "EncryptionResponse",
+            ("EncryptionBegin", frontend::Bound::Client) => "EncryptionRequest",
+            ("PingStart", frontend::Bound::Server) => "StatusRequest",
+            ("Ping", frontend::Bound::Server) => "PingRequest",
+            ("ServerInfo", frontend::Bound::Client) => "StatusResponse",
+            ("Ping", frontend::Bound::Client) => "PingResponse",
+            ("Login", frontend::Bound::Client) => "JoinGame",
+            _ => name,
+        }
+        .to_owned();
+
+        if new_name == name
+            && protocol.to_client.types.contains_key(unformatted_name)
+            && protocol.to_server.types.contains_key(unformatted_name)
+        {
+            match bound {
+                frontend::Bound::Server => format!("ServerBound{}", name),
+                frontend::Bound::Client => format!("ClientBound{}", name),
+            }
+        } else {
+            new_name.to_owned()
+        }
+    }
+
+    fn change_field_type(&self, packet_name: &str, field: frontend::Field) -> frontend::Field {
+        match (packet_name, field.name.as_str()) {
+            // ("StatusResponse", "response") => field.change_type(frontend::DataType::RefType {
+            //     ref_name: "ServerStatus".to_owned(),
+            // }),
+            // ("Success", "uuid") => field.change_type(frontend::DataType::Uuid { hyphenated: true }),
+            // ("Disconnect", "reason") => field.change_type(frontend::DataType::Chat),
+            // ("ClientBoundChat", "message") => field.change_type(frontend::DataType::Chat),
+            // ("ClientBoundChat", "position") => field.change_type(frontend::DataType::RefType {
+            //     ref_name: "MessagePosition".to_owned(),
+            // }),
+            _ => field,
+        }
+    }
+}

protocol-generator/src/templates.rs

@@ -0,0 +1,89 @@
+use handlebars::{Context, Handlebars, Helper, Output, RenderContext, RenderError};
+use heck::SnakeCase;
+
+pub fn create_template_engine() -> Handlebars<'static> {
+    let mut template_engine = Handlebars::new();
+
+    template_engine.register_helper("snake_case", Box::new(format_snake_case));
+    template_engine.register_helper("packet_id", Box::new(format_packet_id));
+    template_engine.register_helper(
+        "protocol_version_module",
+        Box::new(format_protocol_version_module),
+    );
+    template_engine.register_escape_fn(|s| s.to_owned());
+
+    register_template_file(&mut template_engine, "protocol_versions_module");
+    register_template_file(&mut template_engine, "protocol_module");
+    register_template_file(&mut template_engine, "protocol_enum");
+    register_template_file(&mut template_engine, "packets_structs");
+    register_template_file(&mut template_engine, "protocol_header");
+
+    template_engine
+}
+
+fn register_template_file(template_engine: &mut Handlebars, name: &str) {
+    template_engine
+        .register_template_file(name, format!("protocol-generator/templates/{}.hbs", name))
+        .expect("Failed to register template");
+}
+
+fn format_snake_case(
+    h: &Helper,
+    _: &Handlebars,
+    _: &Context,
+    _: &mut RenderContext,
+    out: &mut dyn Output,
+) -> Result<(), RenderError> {
+    let str = h
+        .param(0)
+        .and_then(|v| v.value().as_str())
+        .ok_or(RenderError::new(
+            "Param 0 with str type is required for snake case helper.",
+        ))? as &str;
+
+    let snake_case_str = str.to_snake_case();
+
+    out.write(snake_case_str.as_ref())?;
+    Ok(())
+}
+
+fn format_packet_id(
+    h: &Helper,
+    _: &Handlebars,
+    _: &Context,
+    _: &mut RenderContext,
+    out: &mut dyn Output,
+) -> Result<(), RenderError> {
+    let id = h
+        .param(0)
+        .and_then(|v| v.value().as_u64())
+        .ok_or(RenderError::new(
+            "Param 0 with u64 type is required for packet id helper.",
+        ))? as u64;
+
+    let packet_id_str = format!("{:#04X}", id);
+
+    out.write(packet_id_str.as_ref())?;
+    Ok(())
+}
+
+fn format_protocol_version_module(
+    h: &Helper,
+    _: &Handlebars,
+    _: &Context,
+    _: &mut RenderContext,
+    out: &mut dyn Output,
+) -> Result<(), RenderError> {
+    let version = h
+        .param(0)
+        .and_then(|v| v.value().as_str())
+        .ok_or(RenderError::new(
+            "Param 0 with str type is required for packet id helper.",
+        ))? as &str;
+
+    let formatted_protocol_module_version =
+        format!("v_{}", version.replace(".", "_").replace("-", "_"));
+
+    out.write(formatted_protocol_module_version.as_ref())?;
+    Ok(())
+}

protocol-generator/src/transformers.rs

@@ -0,0 +1,241 @@
+use crate::mappings::Mappings;
+use crate::{backend, frontend};
+use heck::{CamelCase, SnakeCase};
+use std::collections::HashMap;
+
+pub fn transform_protocol_handler<M: Mappings>(
+    mappings: &M,
+    protocol_handler: &backend::ProtocolHandler,
+) -> Vec<(frontend::Protocol, frontend::State)> {
+    vec![
+        (
+            transform_protocol::<M>(&mappings, &protocol_handler.handshaking),
+            frontend::State::Handshake,
+        ),
+        (
+            transform_protocol::<M>(&mappings, &protocol_handler.status),
+            frontend::State::Status,
+        ),
+        (
+            transform_protocol::<M>(&mappings, &protocol_handler.login),
+            frontend::State::Login,
+        ),
+        (
+            transform_protocol::<M>(&mappings, &protocol_handler.game),
+            frontend::State::Game,
+        ),
+    ]
+}
+
+fn transform_protocol<M: Mappings>(
+    mappings: &M,
+    protocol: &backend::Protocol,
+) -> frontend::Protocol {
+    let server_bound_packets = transform_packets(
+        mappings,
+        protocol,
+        &protocol.to_server,
+        frontend::Bound::Server,
+    );
+
+    let client_bound_packets = transform_packets(
+        mappings,
+        protocol,
+        &protocol.to_client,
+        frontend::Bound::Client,
+    );
+
+    frontend::Protocol {
+        server_bound_packets,
+        client_bound_packets,
+    }
+}
+
+fn get_packet_ids(packets: &backend::Packets) -> HashMap<String, u8> {
+    let reversed_packet_ids = packets
+        .types
+        .get("packet")
+        .and_then(|d| d.get(1))
+        .and_then(|d| match d {
+            backend::Data::Containers(data) => data.get(0),
+            _ => None,
+        })
+        .and_then(|c| match c {
+            backend::Container::List { data_vec, .. } => data_vec.get(1),
+            _ => None,
+        })
+        .and_then(|d| match d {
+            backend::Data::Mapper { mappings, .. } => Some(mappings),
+            _ => None,
+        })
+        .expect("Failed to get packet ids");
+
+    reversed_packet_ids
+        .into_iter()
+        .map(|(k, v)| {
+            (
+                v.clone(),
+                u8::from_str_radix(k.trim_start_matches("0x"), 16).expect("Invalid packet id"),
+            )
+        })
+        .collect()
+}
+
+fn transform_packets<M: Mappings>(
+    mappings: &M,
+    protocol: &backend::Protocol,
+    packets: &backend::Packets,
+    bound: frontend::Bound,
+) -> Vec<frontend::Packet> {
+    let packet_ids = get_packet_ids(packets);
+    let mut output_packets = vec![];
+
+    for (unformatted_name, data_vec) in packets.types.iter() {
+        if !unformatted_name.starts_with("packet_")
+            || unformatted_name == "packet_legacy_server_list_ping"
+        {
+            continue;
+        }
+
+        let no_prefix_unformatted = unformatted_name.trim_start_matches("packet_");
+
+        let id = *packet_ids
+            .get(no_prefix_unformatted)
+            .expect("Failed to get packet id");
+
+        let packet_name = mappings.rename_packet(
+            unformatted_name,
+            &no_prefix_unformatted.to_camel_case(),
+            &bound,
+            protocol,
+        );
+
+        let mut fields = vec![];
+
+        for data in data_vec {
+            if let backend::Data::Containers(container_vec) = data {
+                for container in container_vec {
+                    match container {
+                        backend::Container::Value { name, data } => {
+                            match transform_value_field(&name, &data) {
+                                Some(field) => {
+                                    fields.push(mappings.change_field_type(&packet_name, field))
+                                }
+                                None => println!(
+                                    "[{}] Field \"{}\" are skipped ({:?}",
+                                    packet_name, name, data
+                                ),
+                            }
+                        }
+                        backend::Container::List { name, data_vec } => {
+                            if let Some(name) = name {
+                                match transform_list_field(&name, data_vec) {
+                                    Some(field) => {
+                                        fields.push(mappings.change_field_type(&packet_name, field))
+                                    }
+                                    None => {}
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        let packet = frontend::Packet {
+            id,
+            name: packet_name,
+            fields,
+        };
+
+        output_packets.push(packet);
+    }
+
+    output_packets
+}
+
+fn transform_value_field(
+    unformatted_field_name: &str,
+    data: &backend::Data,
+) -> Option<frontend::Field> {
+    match data {
+        backend::Data::Type(name) => match transform_data_type(name) {
+            Some(data_type) => Some(frontend::Field {
+                name: format_field_name(unformatted_field_name),
+                data_type,
+            }),
+            None => None,
+        },
+        _ => None,
+    }
+}
+
+fn transform_list_field(
+    unformatted_field_name: &str,
+    data_vec: &Vec<backend::Data>,
+) -> Option<frontend::Field> {
+    match &data_vec[0] {
+        backend::Data::Type(name) => match name.as_ref() {
+            "buffer" => Some(frontend::Field {
+                name: format_field_name(unformatted_field_name),
+                data_type: frontend::DataType::ByteArray { rest: false },
+            }),
+            "array" => None,
+            "switch" => None,
+            "particleData" => Some(frontend::Field {
+                name: format_field_name(unformatted_field_name),
+                data_type: frontend::DataType::RefType {
+                    ref_name: "ParticleData".to_string(),
+                },
+            }),
+            "option" => transform_value_field(unformatted_field_name, &data_vec[1]),
+            _ => None,
+        },
+        _ => None,
+    }
+}
+
+fn transform_data_type(name: &str) -> Option<frontend::DataType> {
+    match name {
+        "bool" => Some(frontend::DataType::Boolean),
+        "i8" => Some(frontend::DataType::Byte),
+        "i16" => Some(frontend::DataType::Short),
+        "i32" => Some(frontend::DataType::Int { var_int: false }),
+        "i64" => Some(frontend::DataType::Long { var_long: false }),
+        "u8" => Some(frontend::DataType::UnsignedByte),
+        "u16" => Some(frontend::DataType::UnsignedShort),
+        "u32" => Some(frontend::DataType::UnsignedInt),
+        "f32" => Some(frontend::DataType::Float),
+        "f64" => Some(frontend::DataType::Double),
+        "varint" => Some(frontend::DataType::Int { var_int: true }),
+        "varlong" => Some(frontend::DataType::Long { var_long: true }),
+        "string" => Some(frontend::DataType::String { max_length: 0 }),
+        "nbt" | "optionalNbt" => Some(frontend::DataType::CompoundTag),
+        "UUID" => Some(frontend::DataType::Uuid { hyphenated: false }),
+        "restBuffer" => Some(frontend::DataType::ByteArray { rest: true }),
+        "position" => Some(frontend::DataType::RefType {
+            ref_name: "Position".to_string(),
+        }),
+        "slot" => Some(frontend::DataType::RefType {
+            ref_name: "Option<Slot>".to_string(),
+        }),
+        "entityMetadata" => Some(frontend::DataType::RefType {
+            ref_name: "Metadata".to_string(),
+        }),
+        "tags" => Some(frontend::DataType::RefType {
+            ref_name: "TagsMap".to_string(),
+        }),
+        _ => {
+            println!("Unknown data type \"{}\"", name);
+            None
+        }
+    }
+}
+
+fn format_field_name(unformatted_field_name: &str) -> String {
+    if unformatted_field_name == "type" {
+        String::from("type_")
+    } else {
+        unformatted_field_name.to_snake_case()
+    }
+}

protocol-generator/templates/packets_structs.hbs

@@ -0,0 +1,24 @@
+{{~#each packets as |p|}}
+{{~#if p.fields}}
+#[derive(Packet, Debug)]
+pub struct {{p.name}} {
+{{~#each p.fields as |f|}}
+    {{~#if f.var_int}}
+    #[packet(with = "var_int")]{{/if}}
+    {{~#if f.var_long}}
+    #[packet(with = "var_long")]{{/if}}
+    {{~#if f.rest}}
+    #[packet(with = "rest")]{{/if}}
+    {{~#if f.hyphenated}}
+    #[packet(with = "uuid_hyp_str")]{{/if}}
+    {{~#if f.max_length}}
+    #[packet(max_length = {{f.max_length}})]{{/if}}
+    {{~#if (ne f.type "RefType")}}
+    pub {{f.name}}: {{f.type}}{{#unless @last}},{{/unless}}
+    {{~else}}
+    pub {{f.name}}: {{f.ref_name}}{{#unless @last}},{{/unless}}
+    {{~/if}}
+{{~/each}}
+}
+{{/if}}
+{{~/each}}

protocol-generator/templates/protocol_enum.hbs

@@ -0,0 +1,51 @@
+{{~#if packets}}
+pub enum {{protocol_enum_name}} {
+{{~#each packets as |p|}}
+    {{p.name}}{{#if p.fields}}({{p.name}}){{/if}},
+{{~/each}}
+}
+
+impl {{protocol_enum_name}} {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+        {{~#each packets as |p|}}
+            Self::{{p.name}}{{#if p.fields}}(_){{/if}} => {{packet_id p.id}},
+        {{~/each}}
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+        {{~#each packets as |p|}}
+            {{packet_id p.id}} => {
+            {{~#if p.fields}}
+                let {{snake_case p.name}} = {{p.name}}::decode(reader)?;
+
+                Ok(Self::{{p.name}}({{snake_case p.name}}))
+            {{~/if}}
+            {{~#unless p.fields}}
+                Ok(Self::{{p.name}})
+            {{~/unless}}
+            }
+        {{~/each}}
+            _ => Err(DecodeError::UnknownPacketType { type_id })
+        }
+    }
+{{#each packets as |p|}}
+    pub fn {{snake_case p.name}}({{~#each p.fields as |f|}}{{f.name}}: {{#if (ne f.type "RefType")}}{{f.type}}{{~else}}{{f.ref_name}}{{/if}}{{#unless @last}}, {{/unless}}{{~/each}}) -> Self {
+    {{~#if p.fields}}
+        let {{snake_case p.name}} = {{p.name}} {
+        {{~#each p.fields as |f|}}
+            {{f.name}},
+        {{~/each}}
+        };
+
+        Self::{{p.name}}({{snake_case p.name}})
+    {{~/if}}
+    {{~#unless p.fields}}
+        Self::{{p.name}}
+    {{~/unless}}
+    }
+{{/each~}}
+}
+{{~/if}}

protocol-generator/templates/protocol_header.hbs

@@ -0,0 +1,10 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use std::io::Read;
+use minecraft_protocol_derive::Packet;
+
+{{#each imports as |i|~}}
+use {{i}};
+{{/each~}}

protocol-generator/templates/protocol_module.hbs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod handshake;
+pub mod status;
+pub mod login;
+pub mod game;

protocol-generator/templates/protocol_versions_module.hbs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+{{#each versions as |v|~}}
+#[cfg(feature = "{{v}}")]
+pub mod {{protocol_version_module v}};
+{{/each~}}

protocol/Cargo.toml

@@ -16,4 +16,6 @@ byteorder = "1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 uuid = { version = "0.7", features = ["v4", "serde"] }
-named-binary-tag = "0.6"
+num-traits = "0.2"
+num-derive = "0.2"
+named-binary-tag = "0.2"

protocol/src/data/chat.rs

@@ -6,7 +6,7 @@
 //! ## Serialize
 //!
 //! ```
-//! use minecraft_protocol::data::chat::{MessageBuilder, Payload, Color};
+//! use minecraft_protocol::data::chat::{Payload, Color, MessageBuilder};
 //!
 //! let message = MessageBuilder::builder(Payload::text("Hello"))
 //!    .color(Color::Yellow)
@@ -25,7 +25,7 @@
 //! ## Deserialize
 //!
 //! ```
-//! use minecraft_protocol::data::chat::{MessageBuilder, Payload, Message, Color};
+//! use minecraft_protocol::data::chat::{MessageBuilder, Color, Payload, Message};
 //!
 //! let json = r#"
 //! {
@@ -68,7 +68,7 @@ use serde::{
 };
 use serde_json::Error;
 
-#[derive(Debug, Clone, Eq, PartialEq)]
+#[derive(Debug, Eq, PartialEq)]
 pub enum Color {
     Black,
     DarkBlue,
@@ -175,7 +175,7 @@ impl<'de> Deserialize<'de> for Color {
     }
 }
 
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum ClickAction {
     OpenUrl,
@@ -184,7 +184,7 @@ pub enum ClickAction {
     ChangePage,
 }
 
-#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 pub struct ClickEvent {
     pub action: ClickAction,
     pub value: String,
@@ -199,7 +199,7 @@ impl ClickEvent {
     }
 }
 
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum HoverAction {
     ShowText,
@@ -207,7 +207,7 @@ pub enum HoverAction {
     ShowEntity,
 }
 
-#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 pub struct HoverEvent {
     pub action: HoverAction,
     pub value: String,
@@ -222,7 +222,7 @@ impl HoverEvent {
     }
 }
 
-#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(untagged)]
 pub enum Payload {
     Text {
@@ -280,7 +280,7 @@ impl Payload {
     }
 }
 
-#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Message {
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -324,10 +324,6 @@ impl Message {
         }
     }
 
-    pub fn from_str(text: &str) -> Message {
-        Message::new(Payload::text(text))
-    }
-
     pub fn from_json(json: &str) -> Result<Self, Error> {
         serde_json::from_str(json)
     }

protocol/src/data/server_status.rs

@@ -3,31 +3,30 @@ use crate::impl_json_encoder_decoder;
 use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
-#[derive(Clone, Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug)]
+pub struct ServerVersion {
+    pub name: String,
+    pub protocol: u32,
+}
+
+#[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
+pub struct OnlinePlayer {
+    pub name: String,
+    pub id: Uuid,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct OnlinePlayers {
+    pub max: u32,
+    pub online: u32,
+    pub sample: Vec<OnlinePlayer>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
 pub struct ServerStatus {
     pub version: ServerVersion,
     pub players: OnlinePlayers,
     pub description: Message,
 }
 
-#[derive(Clone, Serialize, Deserialize, Debug)]
-pub struct ServerVersion {
-    pub name: String,
-    pub protocol: u32,
-}
-
-#[derive(Clone, Serialize, Deserialize, Debug)]
-pub struct OnlinePlayers {
-    pub max: u32,
-    pub online: u32,
-    #[serde(default)]
-    pub sample: Vec<OnlinePlayer>,
-}
-
-#[derive(Clone, Serialize, Deserialize, Debug, Eq, PartialEq)]
-pub struct OnlinePlayer {
-    pub name: String,
-    pub id: Uuid,
-}
-
 impl_json_encoder_decoder!(ServerStatus);

protocol/src/decoder.rs

@@ -1,291 +0,0 @@
-use crate::error::DecodeError;
-use byteorder::{BigEndian, ReadBytesExt};
-use nbt::CompoundTag;
-use std::io::Read;
-use uuid::Uuid;
-
-pub trait Decoder {
-    type Output;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError>;
-}
-
-/// Trait adds additional helper methods for `Read` to read protocol data.
-pub trait DecoderReadExt {
-    fn read_bool(&mut self) -> Result<bool, DecodeError>;
-
-    fn read_string(&mut self, max_length: u16) -> Result<String, DecodeError>;
-
-    fn read_byte_array(&mut self) -> Result<Vec<u8>, DecodeError>;
-
-    fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError>;
-
-    fn read_var_i32(&mut self) -> Result<i32, DecodeError>;
-
-    fn read_var_i64(&mut self) -> Result<i64, DecodeError>;
-}
-
-macro_rules! read_signed_var_int (
-    ($type: ident, $name: ident, $max_bytes: expr) => (
-        fn $name(&mut self) -> Result<$type, DecodeError> {
-            let mut bytes = 0;
-            let mut output = 0;
-
-            loop {
-                let byte = self.read_u8()?;
-                let value = (byte & 0b01111111) as $type;
-
-                output |= value << 7 * bytes;
-                bytes += 1;
-
-                if bytes > $max_bytes {
-                    return Err(DecodeError::VarIntTooLong { max_bytes: $max_bytes })
-                }
-
-                if (byte & 0b10000000) == 0 {
-                    break;
-                }
-            }
-
-            Ok(output)
-        }
-   );
-);
-
-impl<R: Read> DecoderReadExt for R {
-    fn read_bool(&mut self) -> Result<bool, DecodeError> {
-        match self.read_u8()? {
-            0 => Ok(false),
-            1 => Ok(true),
-            _ => Err(DecodeError::NonBoolValue),
-        }
-    }
-
-    fn read_string(&mut self, max_length: u16) -> Result<String, DecodeError> {
-        let length = self.read_var_i32()? as usize;
-
-        if length as u16 > max_length {
-            return Err(DecodeError::StringTooLong { length, max_length });
-        }
-
-        let mut buf = vec![0; length as usize];
-        self.read_exact(&mut buf)?;
-
-        Ok(String::from_utf8(buf)?)
-    }
-
-    fn read_byte_array(&mut self) -> Result<Vec<u8>, DecodeError> {
-        let length = self.read_var_i32()?;
-
-        let mut buf = vec![0; length as usize];
-        self.read_exact(&mut buf)?;
-
-        Ok(buf)
-    }
-
-    fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError> {
-        Ok(nbt::decode::read_compound_tag(self)?)
-    }
-
-    read_signed_var_int!(i32, read_var_i32, 5);
-    read_signed_var_int!(i64, read_var_i64, 10);
-}
-
-impl Decoder for u8 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_u8()?)
-    }
-}
-
-impl Decoder for i16 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_i16::<BigEndian>()?)
-    }
-}
-
-impl Decoder for i32 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_i32::<BigEndian>()?)
-    }
-}
-
-impl Decoder for u16 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_u16::<BigEndian>()?)
-    }
-}
-
-impl Decoder for u32 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_u32::<BigEndian>()?)
-    }
-}
-
-impl Decoder for i64 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_i64::<BigEndian>()?)
-    }
-}
-
-impl Decoder for u64 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_u64::<BigEndian>()?)
-    }
-}
-
-impl Decoder for f32 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_f32::<BigEndian>()?)
-    }
-}
-
-impl Decoder for f64 {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_f64::<BigEndian>()?)
-    }
-}
-
-impl Decoder for String {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_string(32_768)?)
-    }
-}
-
-impl Decoder for bool {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_bool()?)
-    }
-}
-
-impl Decoder for Vec<u8> {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_byte_array()?)
-    }
-}
-
-impl Decoder for Uuid {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        let mut buf = [0; 16];
-        reader.read_exact(&mut buf)?;
-
-        Ok(Uuid::from_bytes(buf))
-    }
-}
-
-impl Decoder for CompoundTag {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        Ok(reader.read_compound_tag()?)
-    }
-}
-
-impl Decoder for Vec<CompoundTag> {
-    type Output = Self;
-
-    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
-        let length = reader.read_var_i32()? as usize;
-        let mut vec = Vec::with_capacity(length);
-
-        for _ in 0..length {
-            let compound_tag = reader.read_compound_tag()?;
-            vec.push(compound_tag);
-        }
-
-        Ok(vec)
-    }
-}
-
-pub mod var_int {
-    use crate::decoder::DecoderReadExt;
-    use crate::error::DecodeError;
-    use std::io::Read;
-
-    pub fn decode<R: Read>(reader: &mut R) -> Result<i32, DecodeError> {
-        Ok(reader.read_var_i32()?)
-    }
-}
-
-pub mod var_long {
-    use crate::decoder::DecoderReadExt;
-    use crate::error::DecodeError;
-    use std::io::Read;
-
-    pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
-        Ok(reader.read_var_i64()?)
-    }
-}
-
-pub mod rest {
-    use crate::error::DecodeError;
-    use std::io::Read;
-
-    pub fn decode<R: Read>(reader: &mut R) -> Result<Vec<u8>, DecodeError> {
-        let mut data = Vec::new();
-        reader.read_to_end(data.as_mut())?;
-
-        Ok(data)
-    }
-}
-
-pub mod uuid_hyp_str {
-    use crate::decoder::DecoderReadExt;
-    use crate::error::DecodeError;
-    use std::io::Read;
-    use uuid::Uuid;
-
-    pub fn decode<R: Read>(reader: &mut R) -> Result<Uuid, DecodeError> {
-        let uuid_hyphenated_string = reader.read_string(36)?;
-        let uuid = Uuid::parse_str(&uuid_hyphenated_string)?;
-
-        Ok(uuid)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::decoder::DecoderReadExt;
-    use std::io::Cursor;
-
-    #[test]
-    fn test_read_variable_i32_2_bytes_value() {
-        let mut cursor = Cursor::new(vec![0b10101100, 0b00000010]);
-        let value = cursor.read_var_i32().unwrap();
-
-        assert_eq!(value, 300);
-    }
-
-    #[test]
-    fn test_read_variable_i32_5_bytes_value() {
-        let mut cursor = Cursor::new(vec![0xff, 0xff, 0xff, 0xff, 0x07]);
-        let value = cursor.read_var_i32().unwrap();
-
-        assert_eq!(value, 2147483647);
-    }
-}

protocol/src/encoder.rs

@@ -1,255 +0,0 @@
-use crate::error::EncodeError;
-use byteorder::{BigEndian, WriteBytesExt};
-use nbt::CompoundTag;
-use std::io::Write;
-use uuid::Uuid;
-
-pub trait Encoder {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError>;
-}
-
-/// Trait adds additional helper methods for `Write` to write protocol data.
-pub trait EncoderWriteExt {
-    fn write_bool(&mut self, value: bool) -> Result<(), EncodeError>;
-
-    fn write_string(&mut self, value: &str, max_length: u16) -> Result<(), EncodeError>;
-
-    fn write_byte_array(&mut self, value: &[u8]) -> Result<(), EncodeError>;
-
-    fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError>;
-
-    fn write_var_i32(&mut self, value: i32) -> Result<(), EncodeError>;
-
-    fn write_var_i64(&mut self, value: i64) -> Result<(), EncodeError>;
-}
-
-macro_rules! write_signed_var_int (
-    ($type: ident, $name: ident) => (
-        fn $name(&mut self, mut value: $type) -> Result<(), EncodeError> {
-            loop {
-                let mut byte = (value & 0b01111111) as u8;
-                value = value >> 7;
-
-                if value != 0 {
-                    byte |= 0b10000000;
-                }
-
-                self.write_u8(byte)?;
-
-                if value == 0 {
-                   break;
-                }
-            }
-
-            Ok(())
-        }
-    )
-);
-
-impl<W: Write> EncoderWriteExt for W {
-    fn write_bool(&mut self, value: bool) -> Result<(), EncodeError> {
-        if value {
-            self.write_u8(1)?;
-        } else {
-            self.write_u8(0)?;
-        }
-
-        Ok(())
-    }
-
-    fn write_string(&mut self, value: &str, max_length: u16) -> Result<(), EncodeError> {
-        let length = value.len();
-
-        if length > max_length as usize {
-            return Err(EncodeError::StringTooLong { length, max_length });
-        }
-
-        self.write_var_i32(value.len() as i32)?;
-        self.write_all(value.as_bytes())?;
-
-        Ok(())
-    }
-
-    fn write_byte_array(&mut self, value: &[u8]) -> Result<(), EncodeError> {
-        self.write_var_i32(value.len() as i32)?;
-        self.write_all(value)?;
-
-        Ok(())
-    }
-
-    fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError> {
-        nbt::encode::write_compound_tag(self, &value)?;
-
-        Ok(())
-    }
-
-    write_signed_var_int!(i32, write_var_i32);
-    write_signed_var_int!(i64, write_var_i64);
-}
-
-impl Encoder for u8 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_u8(*self)?)
-    }
-}
-
-impl Encoder for i16 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_i16::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for i32 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_i32::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for u16 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_u16::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for u32 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_u32::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for i64 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_i64::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for u64 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_u64::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for f32 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_f32::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for f64 {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_f64::<BigEndian>(*self)?)
-    }
-}
-
-impl Encoder for String {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_string(self, 32_768)?)
-    }
-}
-
-impl Encoder for bool {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_bool(*self)?)
-    }
-}
-
-impl Encoder for Vec<u8> {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_byte_array(self)?)
-    }
-}
-
-impl Encoder for Uuid {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_all(self.as_bytes())?)
-    }
-}
-
-impl Encoder for CompoundTag {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        Ok(writer.write_compound_tag(self)?)
-    }
-}
-
-impl Encoder for Vec<CompoundTag> {
-    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
-        writer.write_var_i32(self.len() as i32)?;
-
-        for compound_tag in self {
-            writer.write_compound_tag(&compound_tag)?;
-        }
-
-        Ok(())
-    }
-}
-
-pub mod var_int {
-    use crate::encoder::EncoderWriteExt;
-    use crate::error::EncodeError;
-    use std::io::Write;
-
-    pub fn encode<W: Write>(value: &i32, writer: &mut W) -> Result<(), EncodeError> {
-        writer.write_var_i32(*value)?;
-
-        Ok(())
-    }
-}
-
-pub mod var_long {
-    use crate::encoder::EncoderWriteExt;
-    use crate::error::EncodeError;
-    use std::io::Write;
-
-    pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
-        writer.write_var_i64(*value)?;
-
-        Ok(())
-    }
-}
-
-pub mod rest {
-    use crate::error::EncodeError;
-    use std::io::Write;
-
-    pub fn encode<W: Write>(value: &[u8], writer: &mut W) -> Result<(), EncodeError> {
-        writer.write_all(value)?;
-
-        Ok(())
-    }
-}
-
-pub mod uuid_hyp_str {
-    use crate::encoder::EncoderWriteExt;
-    use crate::error::EncodeError;
-    use std::io::Write;
-    use uuid::Uuid;
-
-    pub fn encode<W: Write>(value: &Uuid, writer: &mut W) -> Result<(), EncodeError> {
-        let uuid_hyphenated_string = value.to_hyphenated().to_string();
-        writer.write_string(&uuid_hyphenated_string, 36)?;
-
-        Ok(())
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::encoder::EncoderWriteExt;
-    use std::io::Cursor;
-
-    #[test]
-    fn test_write_variable_i32_2_bytes_value() {
-        let mut cursor = Cursor::new(Vec::with_capacity(5));
-        cursor.write_var_i32(300).unwrap();
-
-        assert_eq!(cursor.into_inner(), vec![0b10101100, 0b00000010]);
-    }
-
-    #[test]
-    fn test_write_variable_i32_5_bytes_value() {
-        let mut cursor = Cursor::new(Vec::with_capacity(5));
-        cursor.write_var_i32(2147483647).unwrap();
-
-        assert_eq!(cursor.into_inner(), vec![0xff, 0xff, 0xff, 0xff, 0x07]);
-    }
-}

protocol/src/error.rs

@@ -63,9 +63,9 @@ pub enum DecodeError {
     UuidParseError {
         uuid_parse_error: UuidParseError,
     },
-    /// Type id was not parsed as valid enum value.
+    // Type id was not parsed as valid enum value.
     UnknownEnumType {
-        type_id: usize,
+        type_id: u8,
     },
     TagDecodeError {
         tag_decode_error: TagDecodeError,

protocol/src/lib.rs

@@ -1,35 +1,620 @@
 //! This crate implements Minecraft protocol.
 //!
 //! Information about protocol can be found at https://wiki.vg/Protocol.
+use std::io::{Cursor, Read, Write};
+
+use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
+use nbt::CompoundTag;
+use num_traits::{FromPrimitive, ToPrimitive};
+use uuid::Uuid;
+
+use data::chat::Message;
+
+use crate::error::{DecodeError, EncodeError};
+
 pub mod data;
-pub mod decoder;
-pub mod encoder;
 pub mod error;
 pub mod version;
 
+/// Current supported protocol version.
+pub const PROTOCOL_VERSION: u32 = 498;
 /// Protocol limits maximum string length.
 const STRING_MAX_LENGTH: u16 = 32_768;
+const HYPHENATED_UUID_LENGTH: u16 = 36;
+
+trait Encoder {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError>;
+}
+
+trait Decoder {
+    type Output;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError>;
+}
+
+macro_rules! write_signed_var_int (
+    ($type: ident, $name: ident) => (
+        fn $name(&mut self, mut value: $type) -> Result<(), EncodeError> {
+            loop {
+                let mut byte = (value & 0b01111111) as u8;
+                value = value >> 7;
+
+                if value != 0 {
+                    byte |= 0b10000000;
+                }
+
+                self.write_u8(byte)?;
+
+                if value == 0 {
+                   break;
+                }
+            }
+
+            Ok(())
+        }
+    )
+);
+
+macro_rules! read_signed_var_int (
+    ($type: ident, $name: ident, $max_bytes: expr) => (
+        fn $name(&mut self) -> Result<$type, DecodeError> {
+            let mut bytes = 0;
+            let mut output = 0;
+
+            loop {
+                let byte = self.read_u8()?;
+                let value = (byte & 0b01111111) as $type;
+
+                output |= value << 7 * bytes;
+                bytes += 1;
+
+                if bytes > $max_bytes {
+                    return Err(DecodeError::VarIntTooLong { max_bytes: $max_bytes })
+                }
+
+                if (byte & 0b10000000) == 0 {
+                    break;
+                }
+            }
+
+            Ok(output)
+        }
+   );
+);
+
+/// Trait adds additional helper methods for `Write` to write protocol data.
+trait EncoderWriteExt {
+    fn write_bool(&mut self, value: bool) -> Result<(), EncodeError>;
+
+    fn write_string(&mut self, value: &str, max_length: u16) -> Result<(), EncodeError>;
+
+    fn write_byte_array(&mut self, value: &[u8]) -> Result<(), EncodeError>;
+
+    fn write_chat_message(&mut self, value: &Message) -> Result<(), EncodeError>;
+
+    fn write_enum<T: ToPrimitive>(&mut self, value: &T) -> Result<(), EncodeError>;
+
+    fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError>;
+
+    fn write_var_i32(&mut self, value: i32) -> Result<(), EncodeError>;
+
+    fn write_var_i64(&mut self, value: i64) -> Result<(), EncodeError>;
+}
+
+/// Trait adds additional helper methods for `Read` to read protocol data.
+trait DecoderReadExt {
+    fn read_bool(&mut self) -> Result<bool, DecodeError>;
+
+    fn read_string(&mut self, max_length: u16) -> Result<String, DecodeError>;
+
+    fn read_byte_array(&mut self) -> Result<Vec<u8>, DecodeError>;
+
+    fn read_chat_message(&mut self) -> Result<Message, DecodeError>;
+
+    fn read_enum<T: FromPrimitive>(&mut self) -> Result<T, DecodeError>;
+
+    fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError>;
+
+    fn read_var_i32(&mut self) -> Result<i32, DecodeError>;
+
+    fn read_var_i64(&mut self) -> Result<i64, DecodeError>;
+}
+
+impl<W: Write> EncoderWriteExt for W {
+    fn write_bool(&mut self, value: bool) -> Result<(), EncodeError> {
+        if value {
+            self.write_u8(1)?;
+        } else {
+            self.write_u8(0)?;
+        }
+
+        Ok(())
+    }
+
+    fn write_string(&mut self, value: &str, max_length: u16) -> Result<(), EncodeError> {
+        let length = value.len();
+
+        if length > max_length as usize {
+            return Err(EncodeError::StringTooLong { length, max_length });
+        }
+
+        self.write_var_i32(value.len() as i32)?;
+        self.write_all(value.as_bytes())?;
+
+        Ok(())
+    }
+
+    fn write_byte_array(&mut self, value: &[u8]) -> Result<(), EncodeError> {
+        self.write_var_i32(value.len() as i32)?;
+        self.write_all(value)?;
+
+        Ok(())
+    }
+
+    fn write_chat_message(&mut self, value: &Message) -> Result<(), EncodeError> {
+        self.write_string(&value.to_json()?, STRING_MAX_LENGTH)
+    }
+
+    fn write_enum<T: ToPrimitive>(&mut self, value: &T) -> Result<(), EncodeError> {
+        let type_value = ToPrimitive::to_u8(value).unwrap();
+        self.write_u8(type_value)?;
+
+        Ok(())
+    }
+
+    fn write_compound_tag(&mut self, value: &CompoundTag) -> Result<(), EncodeError> {
+        nbt::encode::write_compound_tag(self, value.clone())?;
+
+        Ok(())
+    }
+
+    write_signed_var_int!(i32, write_var_i32);
+    write_signed_var_int!(i64, write_var_i64);
+}
+
+impl<R: Read> DecoderReadExt for R {
+    fn read_bool(&mut self) -> Result<bool, DecodeError> {
+        match self.read_u8()? {
+            0 => Ok(false),
+            1 => Ok(true),
+            _ => Err(DecodeError::NonBoolValue),
+        }
+    }
+
+    fn read_string(&mut self, max_length: u16) -> Result<String, DecodeError> {
+        let length = self.read_var_i32()? as usize;
+
+        if length as u16 > max_length {
+            return Err(DecodeError::StringTooLong { length, max_length });
+        }
+
+        let mut buf = vec![0; length as usize];
+        self.read_exact(&mut buf)?;
+
+        Ok(String::from_utf8(buf)?)
+    }
+
+    fn read_byte_array(&mut self) -> Result<Vec<u8>, DecodeError> {
+        let length = self.read_var_i32()?;
+
+        let mut buf = vec![0; length as usize];
+        self.read_exact(&mut buf)?;
+
+        Ok(buf)
+    }
+
+    fn read_chat_message(&mut self) -> Result<Message, DecodeError> {
+        let json = self.read_string(STRING_MAX_LENGTH)?;
+        let message = Message::from_json(&json)?;
+
+        Ok(message)
+    }
+
+    fn read_enum<T: FromPrimitive>(&mut self) -> Result<T, DecodeError> {
+        let type_id = self.read_u8()?;
+        let result = FromPrimitive::from_u8(type_id);
+
+        result.ok_or_else(|| DecodeError::UnknownEnumType { type_id })
+    }
+
+    fn read_compound_tag(&mut self) -> Result<CompoundTag, DecodeError> {
+        Ok(nbt::decode::read_compound_tag(self)?)
+    }
+
+    read_signed_var_int!(i32, read_var_i32, 5);
+    read_signed_var_int!(i64, read_var_i64, 10);
+}
+
+impl Encoder for i8 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_i8(*self)?)
+    }
+}
+
+impl Decoder for i8 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_i8()?)
+    }
+}
+
+impl Encoder for u8 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_u8(*self)?)
+    }
+}
+
+impl Decoder for u8 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_u8()?)
+    }
+}
+
+impl Encoder for i16 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_i16::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for i16 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_i16::<BigEndian>()?)
+    }
+}
+
+impl Encoder for u16 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_u16::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for u16 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_u16::<BigEndian>()?)
+    }
+}
+
+impl Encoder for i32 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_i32::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for i32 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_i32::<BigEndian>()?)
+    }
+}
+
+impl Encoder for u32 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_u32::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for u32 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_u32::<BigEndian>()?)
+    }
+}
+
+impl Encoder for i64 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_i64::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for i64 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_i64::<BigEndian>()?)
+    }
+}
+
+impl Encoder for u64 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_u64::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for u64 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_u64::<BigEndian>()?)
+    }
+}
+
+impl Encoder for String {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_string(self, STRING_MAX_LENGTH)?)
+    }
+}
+
+impl Decoder for String {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_string(STRING_MAX_LENGTH)?)
+    }
+}
+
+impl Encoder for bool {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_bool(*self)?)
+    }
+}
+
+impl Decoder for bool {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_bool()?)
+    }
+}
+
+impl Encoder for f32 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_f32::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for f32 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_f32::<BigEndian>()?)
+    }
+}
+
+impl Encoder for f64 {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_f64::<BigEndian>(*self)?)
+    }
+}
+
+impl Decoder for f64 {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_f64::<BigEndian>()?)
+    }
+}
+
+impl Encoder for Vec<u8> {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_byte_array(self)?)
+    }
+}
+
+impl Decoder for Vec<u8> {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_byte_array()?)
+    }
+}
+
+impl Encoder for Uuid {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_all(self.as_bytes())?)
+    }
+}
+
+impl Decoder for Uuid {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        let mut buf = [0; 16];
+        reader.read_exact(&mut buf)?;
+
+        Ok(Uuid::from_bytes(buf))
+    }
+}
+
+impl Encoder for CompoundTag {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        Ok(writer.write_compound_tag(self)?)
+    }
+}
+
+impl Decoder for CompoundTag {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        Ok(reader.read_compound_tag()?)
+    }
+}
+
+impl Encoder for Vec<CompoundTag> {
+    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), EncodeError> {
+        writer.write_var_i32(self.len() as i32)?;
+
+        for compound_tag in self {
+            writer.write_compound_tag(&compound_tag)?;
+        }
+
+        Ok(())
+    }
+}
+
+impl Decoder for Vec<CompoundTag> {
+    type Output = Self;
+
+    fn decode<R: Read>(reader: &mut R) -> Result<Self::Output, DecodeError> {
+        let length = reader.read_var_i32()? as usize;
+        let mut vec = Vec::with_capacity(length);
+
+        for _ in 0..length {
+            let compound_tag = reader.read_compound_tag()?;
+            vec.push(compound_tag);
+        }
+
+        Ok(vec)
+    }
+}
+
+#[macro_export]
+macro_rules! impl_enum_encoder_decoder (
+    ($ty: ident) => (
+        impl crate::Encoder for $ty {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::EncodeError> {
+                Ok(crate::EncoderWriteExt::write_enum(writer, self)?)
+            }
+        }
+
+        impl crate::Decoder for $ty {
+            type Output = Self;
+
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::DecodeError> {
+                Ok(crate::DecoderReadExt::read_enum(reader)?)
+            }
+        }
+   );
+);
 
 #[macro_export]
 macro_rules! impl_json_encoder_decoder (
     ($ty: ident) => (
-        impl crate::encoder::Encoder for $ty {
-            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::error::EncodeError> {
+        impl crate::Encoder for $ty {
+            fn encode<W: std::io::Write>(&self, writer: &mut W) -> Result<(), crate::EncodeError> {
                 let json = serde_json::to_string(self)?;
-                crate::encoder::EncoderWriteExt::write_string(writer, &json, crate::STRING_MAX_LENGTH)?;
+                crate::EncoderWriteExt::write_string(writer, &json, crate::STRING_MAX_LENGTH)?;
 
                 Ok(())
             }
         }
 
-        impl crate::decoder::Decoder for $ty {
+        impl crate::Decoder for $ty {
             type Output = Self;
 
-            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::error::DecodeError> {
-                let json = crate::decoder::DecoderReadExt::read_string(reader, crate::STRING_MAX_LENGTH)?;
+            fn decode<R: std::io::Read>(reader: &mut R) -> Result<Self::Output, crate::DecodeError> {
+                let json = crate::DecoderReadExt::read_string(reader, crate::STRING_MAX_LENGTH)?;
 
                 Ok(serde_json::from_str(&json)?)
             }
         }
    );
 );
+
+mod var_int {
+    use std::io::{Read, Write};
+
+    use crate::{DecodeError, EncodeError};
+    use crate::{DecoderReadExt, EncoderWriteExt};
+
+    pub fn encode<W: Write>(value: &i32, writer: &mut W) -> Result<(), EncodeError> {
+        writer.write_var_i32(*value)?;
+
+        Ok(())
+    }
+
+    pub fn decode<R: Read>(reader: &mut R) -> Result<i32, DecodeError> {
+        Ok(reader.read_var_i32()?)
+    }
+}
+
+mod var_long {
+    use std::io::{Read, Write};
+
+    use crate::{DecodeError, EncodeError};
+    use crate::{DecoderReadExt, EncoderWriteExt};
+
+    pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
+        writer.write_var_i64(*value)?;
+
+        Ok(())
+    }
+
+    pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
+        Ok(reader.read_var_i64()?)
+    }
+}
+
+mod rest {
+    use std::io::{Read, Write};
+
+    use crate::{DecodeError, EncodeError};
+
+    pub fn encode<W: Write>(value: &[u8], writer: &mut W) -> Result<(), EncodeError> {
+        writer.write_all(value)?;
+
+        Ok(())
+    }
+
+    pub fn decode<R: Read>(reader: &mut R) -> Result<Vec<u8>, DecodeError> {
+        let mut data = Vec::new();
+        reader.read_to_end(data.as_mut())?;
+
+        Ok(data)
+    }
+}
+
+mod uuid_hyp_str {
+    use std::io::Cursor;
+    use std::io::{Read, Write};
+
+    use uuid::Uuid;
+
+    use crate::{
+        DecodeError, DecoderReadExt, EncodeError, EncoderWriteExt, HYPHENATED_UUID_LENGTH,
+    };
+
+    pub fn encode<W: Write>(value: &Uuid, writer: &mut W) -> Result<(), EncodeError> {
+        let uuid_hyphenated_string = value.to_hyphenated().to_string();
+        writer.write_string(&uuid_hyphenated_string, HYPHENATED_UUID_LENGTH)?;
+
+        Ok(())
+    }
+
+    pub fn decode<R: Read>(reader: &mut R) -> Result<Uuid, DecodeError> {
+        let uuid_hyphenated_string = reader.read_string(HYPHENATED_UUID_LENGTH)?;
+        let uuid = Uuid::parse_str(&uuid_hyphenated_string)?;
+
+        Ok(uuid)
+    }
+}
+
+#[test]
+fn test_read_variable_i32_2_bytes_value() {
+    let mut cursor = Cursor::new(vec![0b10101100, 0b00000010]);
+    let value = cursor.read_var_i32().unwrap();
+
+    assert_eq!(value, 300);
+}
+
+#[test]
+fn test_read_variable_i32_5_bytes_value() {
+    let mut cursor = Cursor::new(vec![0xff, 0xff, 0xff, 0xff, 0x07]);
+    let value = cursor.read_var_i32().unwrap();
+
+    assert_eq!(value, 2147483647);
+}
+
+#[test]
+fn test_write_variable_i32_2_bytes_value() {
+    let mut cursor = Cursor::new(Vec::with_capacity(5));
+    cursor.write_var_i32(300).unwrap();
+
+    assert_eq!(cursor.into_inner(), vec![0b10101100, 0b00000010]);
+}
+
+#[test]
+fn test_write_variable_i32_5_bytes_value() {
+    let mut cursor = Cursor::new(Vec::with_capacity(5));
+    cursor.write_var_i32(2147483647).unwrap();
+
+    assert_eq!(cursor.into_inner(), vec![0xff, 0xff, 0xff, 0xff, 0x07]);
+}

protocol/src/version/mod.rs

@@ -1 +1,72 @@
-pub mod v1_14_4;
+// This file is automatically generated.
+// It is not intended for manual editing.
+#[cfg(feature = "15w40b")]
+pub mod v_15w40b;
+#[cfg(feature = "16w20a")]
+pub mod v_16w20a;
+#[cfg(feature = "16w35a")]
+pub mod v_16w35a;
+#[cfg(feature = "17w15a")]
+pub mod v_17w15a;
+#[cfg(feature = "17w18b")]
+pub mod v_17w18b;
+#[cfg(feature = "17w50a")]
+pub mod v_17w50a;
+#[cfg(feature = "1.10")]
+pub mod v_1_10;
+#[cfg(feature = "1.10-pre1")]
+pub mod v_1_10_pre1;
+#[cfg(feature = "1.11")]
+pub mod v_1_11;
+#[cfg(feature = "1.12")]
+pub mod v_1_12;
+#[cfg(feature = "1.12.1")]
+pub mod v_1_12_1;
+#[cfg(feature = "1.12.2")]
+pub mod v_1_12_2;
+#[cfg(feature = "1.12-pre4")]
+pub mod v_1_12_pre4;
+#[cfg(feature = "1.13")]
+pub mod v_1_13;
+#[cfg(feature = "1.13.1")]
+pub mod v_1_13_1;
+#[cfg(feature = "1.13.2")]
+pub mod v_1_13_2;
+#[cfg(feature = "1.13.2-pre1")]
+pub mod v_1_13_2_pre1;
+#[cfg(feature = "1.13.2-pre2")]
+pub mod v_1_13_2_pre2;
+#[cfg(feature = "1.14")]
+pub mod v_1_14;
+#[cfg(feature = "1.14.1")]
+pub mod v_1_14_1;
+#[cfg(feature = "1.14.3")]
+pub mod v_1_14_3;
+#[cfg(feature = "1.14.4")]
+pub mod v_1_14_4;
+#[cfg(feature = "1.15")]
+pub mod v_1_15;
+#[cfg(feature = "1.15.1")]
+pub mod v_1_15_1;
+#[cfg(feature = "1.15.2")]
+pub mod v_1_15_2;
+#[cfg(feature = "1.16")]
+pub mod v_1_16;
+#[cfg(feature = "1.16.1")]
+pub mod v_1_16_1;
+#[cfg(feature = "1.16.2")]
+pub mod v_1_16_2;
+#[cfg(feature = "1.16-rc1")]
+pub mod v_1_16_rc1;
+#[cfg(feature = "1.8")]
+pub mod v_1_8;
+#[cfg(feature = "1.9")]
+pub mod v_1_9;
+#[cfg(feature = "1.9.1-pre2")]
+pub mod v_1_9_1_pre2;
+#[cfg(feature = "1.9.2")]
+pub mod v_1_9_2;
+#[cfg(feature = "1.9.4")]
+pub mod v_1_9_4;
+#[cfg(feature = "20w13b")]
+pub mod v_20w13b;

protocol/src/version/v1_14_4/game.rs

@@ -1,734 +0,0 @@
-use crate::data::chat::Message;
-use crate::decoder::Decoder;
-use crate::decoder::DecoderReadExt;
-use crate::encoder::EncoderWriteExt;
-use crate::error::DecodeError;
-use byteorder::{ReadBytesExt, WriteBytesExt};
-use minecraft_protocol_derive::{Decoder, Encoder};
-use nbt::CompoundTag;
-use std::io::Read;
-use uuid::Uuid;
-
-pub enum GameServerBoundPacket {
-    ServerBoundChatMessage(ServerBoundChatMessage),
-    ServerBoundKeepAlive(ServerBoundKeepAlive),
-    ServerBoundAbilities(ServerBoundAbilities),
-}
-
-pub enum GameClientBoundPacket {
-    ClientBoundChatMessage(ClientBoundChatMessage),
-    JoinGame(JoinGame),
-    ClientBoundKeepAlive(ClientBoundKeepAlive),
-    ChunkData(ChunkData),
-    GameDisconnect(GameDisconnect),
-    BossBar(BossBar),
-    EntityAction(EntityAction),
-}
-
-impl GameServerBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            GameServerBoundPacket::ServerBoundChatMessage(_) => 0x03,
-            GameServerBoundPacket::ServerBoundKeepAlive(_) => 0x0F,
-            GameServerBoundPacket::ServerBoundAbilities(_) => 0x19,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x03 => {
-                let chat_message = ServerBoundChatMessage::decode(reader)?;
-
-                Ok(GameServerBoundPacket::ServerBoundChatMessage(chat_message))
-            }
-            0x0F => {
-                let keep_alive = ServerBoundKeepAlive::decode(reader)?;
-
-                Ok(GameServerBoundPacket::ServerBoundKeepAlive(keep_alive))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-impl GameClientBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            GameClientBoundPacket::ClientBoundChatMessage(_) => 0x0E,
-            GameClientBoundPacket::GameDisconnect(_) => 0x1A,
-            GameClientBoundPacket::ClientBoundKeepAlive(_) => 0x20,
-            GameClientBoundPacket::ChunkData(_) => 0x21,
-            GameClientBoundPacket::JoinGame(_) => 0x25,
-            GameClientBoundPacket::BossBar(_) => 0x0D,
-            GameClientBoundPacket::EntityAction(_) => 0x1B,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x0E => {
-                let chat_message = ClientBoundChatMessage::decode(reader)?;
-
-                Ok(GameClientBoundPacket::ClientBoundChatMessage(chat_message))
-            }
-            0x1A => {
-                let game_disconnect = GameDisconnect::decode(reader)?;
-
-                Ok(GameClientBoundPacket::GameDisconnect(game_disconnect))
-            }
-            0x20 => {
-                let keep_alive = ClientBoundKeepAlive::decode(reader)?;
-
-                Ok(GameClientBoundPacket::ClientBoundKeepAlive(keep_alive))
-            }
-            0x21 => {
-                let chunk_data = ChunkData::decode(reader)?;
-
-                Ok(GameClientBoundPacket::ChunkData(chunk_data))
-            }
-            0x25 => {
-                let join_game = JoinGame::decode(reader)?;
-
-                Ok(GameClientBoundPacket::JoinGame(join_game))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct ServerBoundChatMessage {
-    #[data_type(max_length = 256)]
-    pub message: String,
-}
-
-impl ServerBoundChatMessage {
-    pub fn new(message: String) -> GameServerBoundPacket {
-        let chat_message = ServerBoundChatMessage { message };
-
-        GameServerBoundPacket::ServerBoundChatMessage(chat_message)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct ClientBoundChatMessage {
-    pub message: Message,
-    pub position: MessagePosition,
-}
-
-#[derive(Encoder, Decoder, Debug, Eq, PartialEq)]
-pub enum MessagePosition {
-    Chat,
-    System,
-    HotBar,
-}
-
-impl ClientBoundChatMessage {
-    pub fn new(message: Message, position: MessagePosition) -> GameClientBoundPacket {
-        let chat_message = ClientBoundChatMessage { message, position };
-
-        GameClientBoundPacket::ClientBoundChatMessage(chat_message)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct JoinGame {
-    pub entity_id: u32,
-    pub game_mode: GameMode,
-    pub dimension: i32,
-    pub max_players: u8,
-    #[data_type(max_length = 16)]
-    pub level_type: String,
-    #[data_type(with = "var_int")]
-    pub view_distance: i32,
-    pub reduced_debug_info: bool,
-}
-
-#[derive(Encoder, Decoder, Debug, Eq, PartialEq)]
-pub enum GameMode {
-    Survival = 0,
-    Creative = 1,
-    Adventure = 2,
-    Spectator = 3,
-    Hardcore = 8,
-}
-
-impl JoinGame {
-    pub fn new(
-        entity_id: u32,
-        game_mode: GameMode,
-        dimension: i32,
-        max_players: u8,
-        level_type: String,
-        view_distance: i32,
-        reduced_debug_info: bool,
-    ) -> GameClientBoundPacket {
-        let join_game = JoinGame {
-            entity_id,
-            game_mode,
-            dimension,
-            max_players,
-            level_type,
-            view_distance,
-            reduced_debug_info,
-        };
-
-        GameClientBoundPacket::JoinGame(join_game)
-    }
-}
-
-#[derive(Encoder, Decoder)]
-pub struct ServerBoundKeepAlive {
-    pub id: u64,
-}
-
-impl ServerBoundKeepAlive {
-    pub fn new(id: u64) -> GameServerBoundPacket {
-        let keep_alive = ServerBoundKeepAlive { id };
-
-        GameServerBoundPacket::ServerBoundKeepAlive(keep_alive)
-    }
-}
-
-#[derive(Encoder, Decoder)]
-pub struct ClientBoundKeepAlive {
-    pub id: u64,
-}
-
-impl ClientBoundKeepAlive {
-    pub fn new(id: u64) -> GameClientBoundPacket {
-        let keep_alive = ClientBoundKeepAlive { id };
-
-        GameClientBoundPacket::ClientBoundKeepAlive(keep_alive)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct ChunkData {
-    pub x: i32,
-    pub z: i32,
-    pub full: bool,
-    #[data_type(with = "var_int")]
-    pub primary_mask: i32,
-    pub heights: CompoundTag,
-    pub data: Vec<u8>,
-    pub tiles: Vec<CompoundTag>,
-}
-
-impl ChunkData {
-    pub fn new(
-        x: i32,
-        z: i32,
-        full: bool,
-        primary_mask: i32,
-        heights: CompoundTag,
-        data: Vec<u8>,
-        tiles: Vec<CompoundTag>,
-    ) -> GameClientBoundPacket {
-        let chunk_data = ChunkData {
-            x,
-            z,
-            full,
-            primary_mask,
-            heights,
-            data,
-            tiles,
-        };
-
-        GameClientBoundPacket::ChunkData(chunk_data)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct GameDisconnect {
-    pub reason: Message,
-}
-
-impl GameDisconnect {
-    pub fn new(reason: Message) -> GameClientBoundPacket {
-        let game_disconnect = GameDisconnect { reason };
-
-        GameClientBoundPacket::GameDisconnect(game_disconnect)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub struct BossBar {
-    pub id: Uuid,
-    pub action: BossBarAction,
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub enum BossBarAction {
-    Add {
-        title: Message,
-        health: f32,
-        color: BossBarColor,
-        division: BossBarDivision,
-        flags: u8,
-    },
-    Remove,
-    UpdateHealth {
-        health: f32,
-    },
-    UpdateTitle {
-        title: Message,
-    },
-    UpdateStyle {
-        color: BossBarColor,
-        division: BossBarDivision,
-    },
-    UpdateFlags {
-        flags: u8,
-    },
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub enum BossBarColor {
-    Pink,
-    Blue,
-    Red,
-    Green,
-    Yellow,
-    Purple,
-    White,
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub enum BossBarDivision {
-    None,
-    Notches6,
-    Notches10,
-    Notches12,
-    Notches20,
-}
-
-impl BossBar {
-    pub fn new(id: Uuid, action: BossBarAction) -> GameClientBoundPacket {
-        let boss_bar = BossBar { id, action };
-
-        GameClientBoundPacket::BossBar(boss_bar)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub struct EntityAction {
-    #[data_type(with = "var_int")]
-    pub entity_id: i32,
-    pub action_id: EntityActionId,
-    #[data_type(with = "var_int")]
-    pub jump_boost: i32,
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-#[data_type(with = "var_int")]
-pub enum EntityActionId {
-    StartSneaking,
-    StopSneaking,
-    LeaveBad,
-    StartSprinting,
-    StopSprinting,
-    StartJumpWithHorse,
-    StopJumpWithHorse,
-    OpenHorseInventory,
-    StartFlyingWithElytra,
-}
-
-#[derive(Encoder, Decoder, Debug, PartialEq)]
-pub struct ServerBoundAbilities {
-    #[data_type(bitfield)]
-    pub invulnerable: bool,
-    #[data_type(bitfield)]
-    pub allow_flying: bool,
-    #[data_type(bitfield)]
-    pub flying: bool,
-    #[data_type(bitfield)]
-    pub creative_mode: bool,
-    pub fly_speed: f32,
-    pub walk_speed: f32,
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::data::chat::Payload;
-    use crate::decoder::Decoder;
-    use crate::encoder::Encoder;
-    use crate::encoder::EncoderWriteExt;
-    use crate::error::{DecodeError, EncodeError};
-    use crate::version::v1_14_4::game::*;
-    use crate::STRING_MAX_LENGTH;
-    use nbt::CompoundTag;
-    use std::io::Cursor;
-    use std::str::FromStr;
-
-    #[test]
-    fn test_server_bound_chat_message_encode() {
-        let chat_message = ServerBoundChatMessage {
-            message: String::from("hello server!"),
-        };
-
-        let mut vec = Vec::new();
-        chat_message.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/server_bound_chat_message.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_server_bound_chat_message_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/game/server_bound_chat_message.dat").to_vec(),
-        );
-        let chat_message = ServerBoundChatMessage::decode(&mut cursor).unwrap();
-
-        assert_eq!(chat_message.message, "hello server!");
-    }
-
-    #[test]
-    fn test_server_bound_chat_message_encode_invalid_length() {
-        let chat_message = ServerBoundChatMessage {
-            message: "abc".repeat(100),
-        };
-
-        let mut vec = Vec::new();
-
-        let encode_error = chat_message
-            .encode(&mut vec)
-            .err()
-            .expect("Expected error `StringTooLong` because message has invalid length");
-
-        match encode_error {
-            EncodeError::StringTooLong { length, max_length } => {
-                assert_eq!(length, 300);
-                assert_eq!(max_length, 256);
-            }
-            _ => panic!("Expected `StringTooLong` but got `{:?}`", encode_error),
-        }
-    }
-
-    #[test]
-    fn test_server_bound_chat_message_decode_invalid_length() {
-        let message = "abc".repeat(100);
-
-        let mut vec = Vec::new();
-        vec.write_string(&message, STRING_MAX_LENGTH).unwrap();
-
-        let mut cursor = Cursor::new(vec);
-
-        let decode_error = ServerBoundChatMessage::decode(&mut cursor)
-            .err()
-            .expect("Expected error `StringTooLong` because message has invalid length");
-
-        match decode_error {
-            DecodeError::StringTooLong { length, max_length } => {
-                assert_eq!(length, 300);
-                assert_eq!(max_length, 256);
-            }
-            _ => panic!("Expected `StringTooLong` but got `{:?}`", decode_error),
-        }
-    }
-
-    #[test]
-    fn test_client_bound_chat_message_encode() {
-        let chat_message = ClientBoundChatMessage {
-            message: Message::new(Payload::text("hello client!")),
-            position: MessagePosition::System,
-        };
-
-        let mut vec = Vec::new();
-        chat_message.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/client_bound_chat_message.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_client_bound_chat_message_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/game/client_bound_chat_message.dat").to_vec(),
-        );
-        let chat_message = ClientBoundChatMessage::decode(&mut cursor).unwrap();
-
-        assert_eq!(
-            chat_message.message,
-            Message::new(Payload::text("hello client!"))
-        );
-
-        assert_eq!(chat_message.position, MessagePosition::System);
-    }
-
-    #[test]
-    fn test_server_bound_keep_alive_encode() {
-        let keep_alive = ServerBoundKeepAlive { id: 31122019 };
-
-        let mut vec = Vec::new();
-        keep_alive.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/server_bound_keep_alive.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_server_bound_keep_alive_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/game/server_bound_keep_alive.dat").to_vec(),
-        );
-        let keep_alive = ServerBoundKeepAlive::decode(&mut cursor).unwrap();
-
-        assert_eq!(keep_alive.id, 31122019);
-    }
-
-    #[test]
-    fn test_client_bound_keep_alive_encode() {
-        let keep_alive = ClientBoundKeepAlive { id: 240714 };
-
-        let mut vec = Vec::new();
-        keep_alive.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/client_bound_keep_alive.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_client_bound_keep_alive_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/game/client_bound_keep_alive.dat").to_vec(),
-        );
-        let keep_alive = ClientBoundKeepAlive::decode(&mut cursor).unwrap();
-
-        assert_eq!(keep_alive.id, 240714);
-    }
-
-    #[test]
-    fn test_join_game_encode() {
-        let join_game = JoinGame {
-            entity_id: 27,
-            game_mode: GameMode::Hardcore,
-            dimension: 23,
-            max_players: 100,
-            level_type: String::from("default"),
-            view_distance: 10,
-            reduced_debug_info: true,
-        };
-
-        let mut vec = Vec::new();
-        join_game.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/join_game.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_join_game_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/join_game.dat").to_vec());
-        let join_game = JoinGame::decode(&mut cursor).unwrap();
-
-        assert_eq!(join_game.entity_id, 27);
-        assert_eq!(join_game.game_mode, GameMode::Hardcore);
-        assert_eq!(join_game.dimension, 23);
-        assert_eq!(join_game.max_players, 100);
-        assert_eq!(join_game.level_type, String::from("default"));
-        assert_eq!(join_game.view_distance, 10);
-        assert!(join_game.reduced_debug_info);
-    }
-
-    #[test]
-    fn test_chunk_data_encode() {
-        let chunk_data = ChunkData {
-            x: -2,
-            z: 5,
-            full: true,
-            primary_mask: 65535,
-            heights: CompoundTag::named("HeightMaps"),
-            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-            tiles: vec![CompoundTag::named("TileEntity")],
-        };
-
-        let mut vec = Vec::new();
-        chunk_data.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/chunk_data.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_chunk_data_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/chunk_data.dat").to_vec());
-        let chunk_data = ChunkData::decode(&mut cursor).unwrap();
-
-        assert_eq!(chunk_data.x, -2);
-        assert_eq!(chunk_data.z, 5);
-        assert!(chunk_data.full);
-        assert_eq!(chunk_data.heights.name, Some(String::from("HeightMaps")));
-        assert_eq!(chunk_data.data, vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
-        assert_eq!(chunk_data.primary_mask, 65535);
-        assert_eq!(chunk_data.tiles[0].name, Some(String::from("TileEntity")));
-    }
-
-    #[test]
-    fn test_game_disconnect_encode() {
-        let game_disconnect = GameDisconnect {
-            reason: Message::new(Payload::text("Message")),
-        };
-
-        let mut vec = Vec::new();
-        game_disconnect.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/game_disconnect.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_game_disconnect_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/game_disconnect.dat").to_vec());
-        let game_disconnect = GameDisconnect::decode(&mut cursor).unwrap();
-
-        assert_eq!(
-            game_disconnect.reason,
-            Message::new(Payload::text("Message"))
-        );
-    }
-
-    #[test]
-    fn test_boss_bar_add_encode() {
-        let boss_bar_add = create_boss_bar_add_packet();
-
-        let mut vec = Vec::new();
-        boss_bar_add.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/boss_bar_add.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_boss_bar_add_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/boss_bar_add.dat").to_vec());
-        let boss_bar_add = BossBar::decode(&mut cursor).unwrap();
-
-        assert_eq!(boss_bar_add, create_boss_bar_add_packet());
-    }
-
-    fn create_boss_bar_add_packet() -> BossBar {
-        BossBar {
-            id: Uuid::from_str("afa32ac8-d3bf-47f3-99eb-294d60b3dca2").unwrap(),
-            action: BossBarAction::Add {
-                title: Message::from_str("Boss title"),
-                health: 123.45,
-                color: BossBarColor::Yellow,
-                division: BossBarDivision::Notches10,
-                flags: 7,
-            },
-        }
-    }
-
-    #[test]
-    fn test_boss_bar_remove_encode() {
-        let boss_bar_remove = create_boss_bar_remove_packet();
-
-        let mut vec = Vec::new();
-        boss_bar_remove.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/boss_bar_remove.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_boss_bar_remove_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/boss_bar_remove.dat").to_vec());
-        let boss_bar_remove = BossBar::decode(&mut cursor).unwrap();
-
-        assert_eq!(boss_bar_remove, create_boss_bar_remove_packet());
-    }
-
-    fn create_boss_bar_remove_packet() -> BossBar {
-        BossBar {
-            id: Uuid::from_str("afa32ac8-d3bf-47f3-99eb-294d60b3dca2").unwrap(),
-            action: BossBarAction::Remove,
-        }
-    }
-
-    #[test]
-    fn test_entity_action_encode() {
-        let entity_action = EntityAction {
-            entity_id: 12345,
-            action_id: EntityActionId::StartFlyingWithElytra,
-            jump_boost: i32::MAX,
-        };
-
-        let mut vec = Vec::new();
-        entity_action.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/game/entity_action.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_entity_action_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/game/entity_action.dat").to_vec());
-        let entity_action = EntityAction::decode(&mut cursor).unwrap();
-
-        assert_eq!(
-            entity_action,
-            EntityAction {
-                entity_id: 12345,
-                action_id: EntityActionId::StartFlyingWithElytra,
-                jump_boost: i32::MAX,
-            }
-        );
-    }
-
-    #[test]
-    fn test_serverbound_abilities_encode() {
-        let abilities = ServerBoundAbilities {
-            invulnerable: true,
-            flying: true,
-            allow_flying: false,
-            creative_mode: true,
-            fly_speed: 0.0,
-            walk_speed: 0.0,
-        };
-
-        let mut vec = Vec::new();
-        abilities.encode(&mut vec).unwrap();
-
-        assert_eq!(vec, [13, 0, 0, 0, 0, 0, 0, 0, 0]);
-    }
-
-    #[test]
-    fn test_serverbound_abilities_decode() {
-        let vec = [13, 0, 0, 0, 0, 0, 0, 0, 0].to_vec();
-        let mut cursor = Cursor::new(vec);
-
-        let abilities = ServerBoundAbilities::decode(&mut cursor).unwrap();
-        assert!(abilities.invulnerable);
-        assert!(!abilities.allow_flying);
-        assert!(abilities.flying);
-        assert!(abilities.creative_mode);
-    }
-}

protocol/src/version/v1_14_4/handshake.rs

@@ -1,55 +0,0 @@
-use crate::decoder::Decoder;
-use crate::error::DecodeError;
-use minecraft_protocol_derive::{Decoder, Encoder};
-use std::io::Read;
-
-pub enum HandshakeServerBoundPacket {
-    Handshake(Handshake),
-}
-
-impl HandshakeServerBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            HandshakeServerBoundPacket::Handshake(_) => 0x00,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x00 => {
-                let handshake = Handshake::decode(reader)?;
-                Ok(HandshakeServerBoundPacket::Handshake(handshake))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct Handshake {
-    #[data_type(with = "var_int")]
-    pub protocol_version: i32,
-    #[data_type(max_length = 255)]
-    pub server_addr: String,
-    pub server_port: u16,
-    #[data_type(with = "var_int")]
-    pub next_state: i32,
-}
-
-impl Handshake {
-    pub fn new(
-        protocol_version: i32,
-        server_addr: String,
-        server_port: u16,
-        next_state: i32,
-    ) -> HandshakeServerBoundPacket {
-        let handshake = Handshake {
-            protocol_version,
-            server_addr,
-            server_port,
-            next_state,
-        };
-
-        HandshakeServerBoundPacket::Handshake(handshake)
-    }
-}

protocol/src/version/v1_14_4/login.rs

@@ -1,482 +0,0 @@
-use std::io::Read;
-use uuid::Uuid;
-
-use crate::data::chat::Message;
-use crate::decoder::Decoder;
-use crate::error::DecodeError;
-use minecraft_protocol_derive::{Decoder, Encoder};
-
-pub enum LoginServerBoundPacket {
-    LoginStart(LoginStart),
-    EncryptionResponse(EncryptionResponse),
-    LoginPluginResponse(LoginPluginResponse),
-}
-
-pub enum LoginClientBoundPacket {
-    LoginDisconnect(LoginDisconnect),
-    EncryptionRequest(EncryptionRequest),
-    LoginSuccess(LoginSuccess),
-    SetCompression(SetCompression),
-    LoginPluginRequest(LoginPluginRequest),
-}
-
-impl LoginServerBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            LoginServerBoundPacket::LoginStart(_) => 0x00,
-            LoginServerBoundPacket::EncryptionResponse(_) => 0x01,
-            LoginServerBoundPacket::LoginPluginResponse(_) => 0x02,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x00 => {
-                let login_start = LoginStart::decode(reader)?;
-
-                Ok(LoginServerBoundPacket::LoginStart(login_start))
-            }
-            0x01 => {
-                let encryption_response = EncryptionResponse::decode(reader)?;
-
-                Ok(LoginServerBoundPacket::EncryptionResponse(
-                    encryption_response,
-                ))
-            }
-            0x02 => {
-                let login_plugin_response = LoginPluginResponse::decode(reader)?;
-
-                Ok(LoginServerBoundPacket::LoginPluginResponse(
-                    login_plugin_response,
-                ))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-impl LoginClientBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            LoginClientBoundPacket::LoginDisconnect(_) => 0x00,
-            LoginClientBoundPacket::EncryptionRequest(_) => 0x01,
-            LoginClientBoundPacket::LoginSuccess(_) => 0x02,
-            LoginClientBoundPacket::SetCompression(_) => 0x03,
-            LoginClientBoundPacket::LoginPluginRequest(_) => 0x04,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x00 => {
-                let login_disconnect = LoginDisconnect::decode(reader)?;
-
-                Ok(LoginClientBoundPacket::LoginDisconnect(login_disconnect))
-            }
-            0x01 => {
-                let encryption_request = EncryptionRequest::decode(reader)?;
-
-                Ok(LoginClientBoundPacket::EncryptionRequest(
-                    encryption_request,
-                ))
-            }
-            0x02 => {
-                let login_success = LoginSuccess::decode(reader)?;
-
-                Ok(LoginClientBoundPacket::LoginSuccess(login_success))
-            }
-            0x03 => {
-                let set_compression = SetCompression::decode(reader)?;
-
-                Ok(LoginClientBoundPacket::SetCompression(set_compression))
-            }
-            0x04 => {
-                let login_plugin_request = LoginPluginRequest::decode(reader)?;
-
-                Ok(LoginClientBoundPacket::LoginPluginRequest(
-                    login_plugin_request,
-                ))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct LoginStart {
-    pub name: String,
-}
-
-impl LoginStart {
-    pub fn new(name: String) -> LoginServerBoundPacket {
-        let login_start = LoginStart { name };
-
-        LoginServerBoundPacket::LoginStart(login_start)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct EncryptionResponse {
-    pub shared_secret: Vec<u8>,
-    pub verify_token: Vec<u8>,
-}
-
-impl EncryptionResponse {
-    pub fn new(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> LoginServerBoundPacket {
-        let encryption_response = EncryptionResponse {
-            shared_secret,
-            verify_token,
-        };
-
-        LoginServerBoundPacket::EncryptionResponse(encryption_response)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct LoginPluginResponse {
-    #[data_type(with = "var_int")]
-    pub message_id: i32,
-    pub successful: bool,
-    #[data_type(with = "rest")]
-    pub data: Vec<u8>,
-}
-
-impl LoginPluginResponse {
-    pub fn new(message_id: i32, successful: bool, data: Vec<u8>) -> LoginServerBoundPacket {
-        let login_plugin_response = LoginPluginResponse {
-            message_id,
-            successful,
-            data,
-        };
-
-        LoginServerBoundPacket::LoginPluginResponse(login_plugin_response)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct LoginDisconnect {
-    pub reason: Message,
-}
-
-impl LoginDisconnect {
-    pub fn new(reason: Message) -> LoginClientBoundPacket {
-        let login_disconnect = LoginDisconnect { reason };
-
-        LoginClientBoundPacket::LoginDisconnect(login_disconnect)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct EncryptionRequest {
-    #[data_type(max_length = 20)]
-    pub server_id: String,
-    pub public_key: Vec<u8>,
-    pub verify_token: Vec<u8>,
-}
-
-impl EncryptionRequest {
-    pub fn new(
-        server_id: String,
-        public_key: Vec<u8>,
-        verify_token: Vec<u8>,
-    ) -> LoginClientBoundPacket {
-        let encryption_request = EncryptionRequest {
-            server_id,
-            public_key,
-            verify_token,
-        };
-
-        LoginClientBoundPacket::EncryptionRequest(encryption_request)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct LoginSuccess {
-    #[data_type(with = "uuid_hyp_str")]
-    pub uuid: Uuid,
-    #[data_type(max_length = 16)]
-    pub username: String,
-}
-
-impl LoginSuccess {
-    pub fn new(uuid: Uuid, username: String) -> LoginClientBoundPacket {
-        let login_success = LoginSuccess { uuid, username };
-
-        LoginClientBoundPacket::LoginSuccess(login_success)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct SetCompression {
-    #[data_type(with = "var_int")]
-    pub threshold: i32,
-}
-
-impl SetCompression {
-    pub fn new(threshold: i32) -> LoginClientBoundPacket {
-        let set_compression = SetCompression { threshold };
-
-        LoginClientBoundPacket::SetCompression(set_compression)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct LoginPluginRequest {
-    #[data_type(with = "var_int")]
-    pub message_id: i32,
-    pub channel: String,
-    #[data_type(with = "rest")]
-    pub data: Vec<u8>,
-}
-
-impl LoginPluginRequest {
-    pub fn new(message_id: i32, channel: String, data: Vec<u8>) -> LoginClientBoundPacket {
-        let login_plugin_request = LoginPluginRequest {
-            message_id,
-            channel,
-            data,
-        };
-
-        LoginClientBoundPacket::LoginPluginRequest(login_plugin_request)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::data::chat::Payload;
-    use crate::decoder::Decoder;
-    use crate::encoder::Encoder;
-    use crate::version::v1_14_4::login::*;
-    use std::io::Cursor;
-    use uuid::Uuid;
-
-    #[test]
-    fn test_login_start_packet_encode() {
-        let login_start = LoginStart {
-            name: String::from("Username"),
-        };
-
-        let mut vec = Vec::new();
-        login_start.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_start.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_login_start_packet_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/login/login_start.dat").to_vec());
-        let login_start = LoginStart::decode(&mut cursor).unwrap();
-
-        assert_eq!(login_start.name, String::from("Username"));
-    }
-
-    #[test]
-    fn test_encryption_response_encode() {
-        let encryption_response = EncryptionResponse {
-            shared_secret: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-            verify_token: vec![1, 2, 3, 4],
-        };
-
-        let mut vec = Vec::new();
-        encryption_response.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/encryption_response.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_encryption_response_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/login/encryption_response.dat").to_vec(),
-        );
-        let encryption_response = EncryptionResponse::decode(&mut cursor).unwrap();
-
-        assert_eq!(
-            encryption_response.shared_secret,
-            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
-        );
-        assert_eq!(encryption_response.verify_token, vec![1, 2, 3, 4]);
-    }
-
-    #[test]
-    fn test_login_plugin_response_encode() {
-        let login_plugin_response = LoginPluginResponse {
-            message_id: 55,
-            successful: true,
-            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-        };
-
-        let mut vec = Vec::new();
-        login_plugin_response.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_plugin_response.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_login_plugin_response_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/login/login_plugin_response.dat").to_vec(),
-        );
-        let login_plugin_response = LoginPluginResponse::decode(&mut cursor).unwrap();
-
-        assert_eq!(login_plugin_response.message_id, 55);
-        assert!(login_plugin_response.successful);
-        assert_eq!(
-            login_plugin_response.data,
-            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
-        );
-    }
-
-    #[test]
-    fn test_login_disconnect_encode() {
-        let login_disconnect = LoginDisconnect {
-            reason: Message::new(Payload::text("Message")),
-        };
-
-        let mut vec = Vec::new();
-        login_disconnect.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_disconnect.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_login_disconnect_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/login/login_disconnect.dat").to_vec());
-        let login_disconnect = LoginDisconnect::decode(&mut cursor).unwrap();
-
-        assert_eq!(
-            login_disconnect.reason,
-            Message::new(Payload::text("Message"))
-        );
-    }
-
-    #[test]
-    fn test_encryption_request_encode() {
-        let encryption_request = EncryptionRequest {
-            server_id: String::from("ServerID"),
-            public_key: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-            verify_token: vec![1, 2, 3, 4],
-        };
-
-        let mut vec = Vec::new();
-        encryption_request.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/encryption_request.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_encryption_request_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/login/encryption_request.dat").to_vec(),
-        );
-        let encryption_request = EncryptionRequest::decode(&mut cursor).unwrap();
-
-        assert_eq!(encryption_request.server_id, String::from("ServerID"));
-        assert_eq!(
-            encryption_request.public_key,
-            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
-        );
-        assert_eq!(encryption_request.verify_token, vec![1, 2, 3, 4]);
-    }
-
-    #[test]
-    fn test_login_success_encode() {
-        let login_success = LoginSuccess {
-            uuid: Uuid::parse_str("35ee313b-d89a-41b8-b25e-d32e8aff0389").unwrap(),
-            username: String::from("Username"),
-        };
-
-        let mut vec = Vec::new();
-        login_success.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_success.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_login_success_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/login/login_success.dat").to_vec());
-        let login_success = LoginSuccess::decode(&mut cursor).unwrap();
-
-        assert_eq!(login_success.username, String::from("Username"));
-
-        assert_eq!(
-            login_success.uuid,
-            Uuid::parse_str("35ee313b-d89a-41b8-b25e-d32e8aff0389").unwrap()
-        );
-    }
-
-    #[test]
-    fn test_set_compression_encode() {
-        let set_compression = SetCompression { threshold: 1 };
-
-        let mut vec = Vec::new();
-        set_compression.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_set_compression.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_set_compression_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/login/login_set_compression.dat").to_vec(),
-        );
-        let set_compression = SetCompression::decode(&mut cursor).unwrap();
-
-        assert_eq!(set_compression.threshold, 1);
-    }
-
-    #[test]
-    fn test_login_plugin_request_encode() {
-        let login_plugin_request = LoginPluginRequest {
-            message_id: 55,
-            channel: String::from("Channel"),
-            data: vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-        };
-
-        let mut vec = Vec::new();
-        login_plugin_request.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/login/login_plugin_request.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_login_plugin_request_decode() {
-        let mut cursor = Cursor::new(
-            include_bytes!("../../../test/packet/login/login_plugin_request.dat").to_vec(),
-        );
-        let login_plugin_request = LoginPluginRequest::decode(&mut cursor).unwrap();
-
-        assert_eq!(login_plugin_request.message_id, 55);
-        assert_eq!(login_plugin_request.channel, String::from("Channel"));
-        assert_eq!(
-            login_plugin_request.data,
-            vec![1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
-        );
-    }
-}

protocol/src/version/v1_14_4/mod.rs

@@ -1,4 +0,0 @@
-pub mod game;
-pub mod handshake;
-pub mod login;
-pub mod status;

protocol/src/version/v1_14_4/status.rs

@@ -1,200 +0,0 @@
-use crate::data::server_status::*;
-use crate::decoder::Decoder;
-use crate::error::DecodeError;
-use minecraft_protocol_derive::{Decoder, Encoder};
-use std::io::Read;
-
-pub enum StatusServerBoundPacket {
-    StatusRequest,
-    PingRequest(PingRequest),
-}
-
-pub enum StatusClientBoundPacket {
-    StatusResponse(StatusResponse),
-    PingResponse(PingResponse),
-}
-
-impl StatusServerBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            StatusServerBoundPacket::StatusRequest => 0x00,
-            StatusServerBoundPacket::PingRequest(_) => 0x01,
-        }
-    }
-
-    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
-        match type_id {
-            0x00 => Ok(StatusServerBoundPacket::StatusRequest),
-            0x01 => {
-                let ping_request = PingRequest::decode(reader)?;
-
-                Ok(StatusServerBoundPacket::PingRequest(ping_request))
-            }
-            _ => Err(DecodeError::UnknownPacketType { type_id }),
-        }
-    }
-}
-
-impl StatusClientBoundPacket {
-    pub fn get_type_id(&self) -> u8 {
-        match self {
-            StatusClientBoundPacket::StatusResponse(_) => 0x00,
-            StatusClientBoundPacket::PingResponse(_) => 0x01,
-        }
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct PingRequest {
-    pub time: u64,
-}
-
-impl PingRequest {
-    pub fn new(time: u64) -> StatusServerBoundPacket {
-        let ping_request = PingRequest { time };
-
-        StatusServerBoundPacket::PingRequest(ping_request)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct PingResponse {
-    pub time: u64,
-}
-
-impl PingResponse {
-    pub fn new(time: u64) -> StatusClientBoundPacket {
-        let ping_response = PingResponse { time };
-
-        StatusClientBoundPacket::PingResponse(ping_response)
-    }
-}
-
-#[derive(Encoder, Decoder, Debug)]
-pub struct StatusResponse {
-    pub server_status: ServerStatus,
-}
-
-impl StatusResponse {
-    pub fn new(server_status: ServerStatus) -> StatusClientBoundPacket {
-        let status_response = StatusResponse { server_status };
-
-        StatusClientBoundPacket::StatusResponse(status_response)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use crate::data::chat::{Message, Payload};
-    use crate::decoder::Decoder;
-    use crate::encoder::Encoder;
-    use crate::version::v1_14_4::status::*;
-    use std::io::Cursor;
-    use uuid::Uuid;
-
-    #[test]
-    fn test_ping_request_encode() {
-        let ping_request = PingRequest {
-            time: 1577735845610,
-        };
-
-        let mut vec = Vec::new();
-        ping_request.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/status/ping_request.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_status_ping_request_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/status/ping_request.dat").to_vec());
-        let ping_request = PingRequest::decode(&mut cursor).unwrap();
-
-        assert_eq!(ping_request.time, 1577735845610);
-    }
-
-    #[test]
-    fn test_ping_response_encode() {
-        let ping_response = PingResponse {
-            time: 1577735845610,
-        };
-
-        let mut vec = Vec::new();
-        ping_response.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/status/ping_response.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_status_ping_response_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/status/ping_response.dat").to_vec());
-        let ping_response = PingResponse::decode(&mut cursor).unwrap();
-
-        assert_eq!(ping_response.time, 1577735845610);
-    }
-
-    #[test]
-    fn test_status_response_encode() {
-        let version = ServerVersion {
-            name: String::from("1.15.1"),
-            protocol: 575,
-        };
-
-        let player = OnlinePlayer {
-            id: Uuid::parse_str("2a1e1912-7103-4add-80fc-91ebc346cbce").unwrap(),
-            name: String::from("Username"),
-        };
-
-        let players = OnlinePlayers {
-            online: 10,
-            max: 100,
-            sample: vec![player],
-        };
-
-        let server_status = ServerStatus {
-            version,
-            description: Message::new(Payload::text("Description")),
-            players,
-        };
-
-        let status_response = StatusResponse { server_status };
-
-        let mut vec = Vec::new();
-        status_response.encode(&mut vec).unwrap();
-
-        assert_eq!(
-            vec,
-            include_bytes!("../../../test/packet/status/status_response.dat").to_vec()
-        );
-    }
-
-    #[test]
-    fn test_status_response_decode() {
-        let mut cursor =
-            Cursor::new(include_bytes!("../../../test/packet/status/status_response.dat").to_vec());
-        let status_response = StatusResponse::decode(&mut cursor).unwrap();
-        let server_status = status_response.server_status;
-
-        let player = OnlinePlayer {
-            id: Uuid::parse_str("2a1e1912-7103-4add-80fc-91ebc346cbce").unwrap(),
-            name: String::from("Username"),
-        };
-
-        assert_eq!(server_status.version.name, String::from("1.15.1"));
-        assert_eq!(server_status.version.protocol, 575);
-        assert_eq!(server_status.players.max, 100);
-        assert_eq!(server_status.players.online, 10);
-        assert_eq!(server_status.players.sample, vec![player]);
-        assert_eq!(
-            server_status.description,
-            Message::new(Payload::text("Description"))
-        );
-    }
-}

protocol/src/version/v_15w40b/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_15w40b/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_15w40b/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_15w40b/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_16w20a/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_16w20a/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_16w20a/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_16w20a/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_16w35a/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_16w35a/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_16w35a/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_16w35a/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_17w15a/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_17w15a/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_17w15a/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_17w15a/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_17w18b/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_17w18b/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_17w18b/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_17w18b/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_17w50a/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_17w50a/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_17w50a/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_17w50a/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_10/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_10/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_10/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_10/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_10_pre1/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_10_pre1/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_10_pre1/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_10_pre1/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_11/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_11/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_11/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_11/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_12/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_12/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_12/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_12/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_12_1/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_12_1/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_12_1/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_12_1/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_12_2/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}

protocol/src/version/v_1_12_2/login.rs

@@ -0,0 +1,162 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundLoginPacket {
+    LoginStart(LoginStart),
+    EncryptionResponse(EncryptionResponse),
+}
+
+impl ServerBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::LoginStart(_) => 0x00,
+            Self::EncryptionResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let login_start = LoginStart::decode(reader)?;
+
+                Ok(Self::LoginStart(login_start))
+            }
+            0x01 => {
+                let encryption_response = EncryptionResponse::decode(reader)?;
+
+                Ok(Self::EncryptionResponse(encryption_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn login_start(username: String) -> Self {
+        let login_start = LoginStart { username };
+
+        Self::LoginStart(login_start)
+    }
+
+    pub fn encryption_response(shared_secret: Vec<u8>, verify_token: Vec<u8>) -> Self {
+        let encryption_response = EncryptionResponse {
+            shared_secret,
+            verify_token,
+        };
+
+        Self::EncryptionResponse(encryption_response)
+    }
+}
+
+pub enum ClientBoundLoginPacket {
+    Disconnect(Disconnect),
+    EncryptionRequest(EncryptionRequest),
+    Success(Success),
+    Compress(Compress),
+}
+
+impl ClientBoundLoginPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::Disconnect(_) => 0x00,
+            Self::EncryptionRequest(_) => 0x01,
+            Self::Success(_) => 0x02,
+            Self::Compress(_) => 0x03,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let disconnect = Disconnect::decode(reader)?;
+
+                Ok(Self::Disconnect(disconnect))
+            }
+            0x01 => {
+                let encryption_request = EncryptionRequest::decode(reader)?;
+
+                Ok(Self::EncryptionRequest(encryption_request))
+            }
+            0x02 => {
+                let success = Success::decode(reader)?;
+
+                Ok(Self::Success(success))
+            }
+            0x03 => {
+                let compress = Compress::decode(reader)?;
+
+                Ok(Self::Compress(compress))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn disconnect(reason: String) -> Self {
+        let disconnect = Disconnect { reason };
+
+        Self::Disconnect(disconnect)
+    }
+
+    pub fn encryption_request(
+        server_id: String,
+        public_key: Vec<u8>,
+        verify_token: Vec<u8>,
+    ) -> Self {
+        let encryption_request = EncryptionRequest {
+            server_id,
+            public_key,
+            verify_token,
+        };
+
+        Self::EncryptionRequest(encryption_request)
+    }
+
+    pub fn success(uuid: String, username: String) -> Self {
+        let success = Success { uuid, username };
+
+        Self::Success(success)
+    }
+
+    pub fn compress(threshold: i32) -> Self {
+        let compress = Compress { threshold };
+
+        Self::Compress(compress)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct LoginStart {
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionResponse {
+    pub shared_secret: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Disconnect {
+    pub reason: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct EncryptionRequest {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub verify_token: Vec<u8>,
+}
+
+#[derive(Packet, Debug)]
+pub struct Success {
+    pub uuid: String,
+    pub username: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct Compress {
+    #[packet(with = "var_int")]
+    pub threshold: i32,
+}

protocol/src/version/v_1_12_2/mod.rs

@@ -0,0 +1,6 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+pub mod game;
+pub mod handshake;
+pub mod login;
+pub mod status;

protocol/src/version/v_1_12_2/status.rs

@@ -0,0 +1,99 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundStatusPacket {
+    StatusRequest,
+    PingRequest(PingRequest),
+}
+
+impl ServerBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusRequest => 0x00,
+            Self::PingRequest(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => Ok(Self::StatusRequest),
+            0x01 => {
+                let ping_request = PingRequest::decode(reader)?;
+
+                Ok(Self::PingRequest(ping_request))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_request() -> Self {
+        Self::StatusRequest
+    }
+
+    pub fn ping_request(time: i64) -> Self {
+        let ping_request = PingRequest { time };
+
+        Self::PingRequest(ping_request)
+    }
+}
+
+pub enum ClientBoundStatusPacket {
+    StatusResponse(StatusResponse),
+    PingResponse(PingResponse),
+}
+
+impl ClientBoundStatusPacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::StatusResponse(_) => 0x00,
+            Self::PingResponse(_) => 0x01,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let status_response = StatusResponse::decode(reader)?;
+
+                Ok(Self::StatusResponse(status_response))
+            }
+            0x01 => {
+                let ping_response = PingResponse::decode(reader)?;
+
+                Ok(Self::PingResponse(ping_response))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn status_response(response: String) -> Self {
+        let status_response = StatusResponse { response };
+
+        Self::StatusResponse(status_response)
+    }
+
+    pub fn ping_response(time: i64) -> Self {
+        let ping_response = PingResponse { time };
+
+        Self::PingResponse(ping_response)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct PingRequest {
+    pub time: i64,
+}
+
+#[derive(Packet, Debug)]
+pub struct StatusResponse {
+    pub response: String,
+}
+
+#[derive(Packet, Debug)]
+pub struct PingResponse {
+    pub time: i64,
+}

protocol/src/version/v_1_12_pre4/handshake.rs

@@ -0,0 +1,55 @@
+// This file is automatically generated.
+// It is not intended for manual editing.
+use crate::DecodeError;
+use crate::Decoder;
+use minecraft_protocol_derive::Packet;
+use std::io::Read;
+
+pub enum ServerBoundHandshakePacket {
+    SetProtocol(SetProtocol),
+}
+
+impl ServerBoundHandshakePacket {
+    pub fn get_type_id(&self) -> u8 {
+        match self {
+            Self::SetProtocol(_) => 0x00,
+        }
+    }
+
+    pub fn decode<R: Read>(type_id: u8, reader: &mut R) -> Result<Self, DecodeError> {
+        match type_id {
+            0x00 => {
+                let set_protocol = SetProtocol::decode(reader)?;
+
+                Ok(Self::SetProtocol(set_protocol))
+            }
+            _ => Err(DecodeError::UnknownPacketType { type_id }),
+        }
+    }
+
+    pub fn set_protocol(
+        protocol_version: i32,
+        server_host: String,
+        server_port: u16,
+        next_state: i32,
+    ) -> Self {
+        let set_protocol = SetProtocol {
+            protocol_version,
+            server_host,
+            server_port,
+            next_state,
+        };
+
+        Self::SetProtocol(set_protocol)
+    }
+}
+
+#[derive(Packet, Debug)]
+pub struct SetProtocol {
+    #[packet(with = "var_int")]
+    pub protocol_version: i32,
+    pub server_host: String,
+    pub server_port: u16,
+    #[packet(with = "var_int")]
+    pub next_state: i32,
+}