Add lobby compiler feature flag

.gitlab-ci.yml

@@ -45,6 +45,7 @@ before_script:
     - cargo check --verbose
     - cargo check --no-default-features --verbose
     - cargo check --no-default-features --features rcon --verbose
+    - cargo check --no-default-features --features lobby --verbose
 check:
   <<: *check-base
 check-macos:
@@ -68,6 +69,7 @@ check-windows:
   script:
     - cargo check --locked --verbose
     - cargo check --locked --no-default-features --features rcon --verbose
+    - cargo check --locked --no-default-features --features lobby --verbose
 
 # Build using Rust stable on Linux
 build-x86_64-linux-gnu:
@@ -231,6 +233,7 @@ test-cargo-x86_64-linux-gnu:
     - cargo test --locked --verbose
     - cargo test --locked --no-default-features --verbose
     - cargo test --locked --no-default-features --features rcon --verbose
+    - cargo test --locked --no-default-features --features lobby --verbose
 
 # Run the unit tests through Cargo on Windows
 test-cargo-x86_64-windows:
@@ -244,6 +247,7 @@ test-cargo-x86_64-windows:
   script:
     - cargo test --locked --verbose
     - cargo test --locked --no-default-features --features rcon --verbose
+    - cargo test --locked --no-default-features --features lobby --verbose
 
 # Release binaries on GitLab as generic package
 release-gitlab-generic-package:

Cargo.toml

@@ -19,9 +19,17 @@ exclude = [
 edition = "2021"
 
 [features]
-default = ["rcon"]
+default = ["rcon", "lobby"]
+
+# RCON support
+# Allow use of RCON to manage (stop) server.
+# Required on Windows.
 rcon = ["rust_rcon"]
 
+# Lobby support
+# Add lobby join method, keeps client in fake lobby world until server is ready.
+lobby = ["named-binary-tag", "quartz_nbt", "uuid"]
+
 [dependencies]
 anyhow = "1.0"
 bytes = "1.1"
@@ -46,9 +54,9 @@ version-compare = "0.1"
 rust_rcon = { package = "rcon", version = "0.5", optional = true }
 
 # Feature: lobby
-named-binary-tag = "0.6"
+named-binary-tag = { version = "0.6", optional = true }
-quartz_nbt = "0.2"
+quartz_nbt = { version = "0.2", optional = true }
-uuid = { version = "0.7", features = ["v3"] }
+uuid = { version = "0.7", optional = true, features = ["v3"] }
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"

src/main.rs

@@ -10,6 +10,7 @@ extern crate log;
 pub(crate) mod action;
 pub(crate) mod cli;
 pub(crate) mod config;
+#[cfg(feature = "lobby")]
 pub(crate) mod lobby;
 pub(crate) mod mc;
 pub(crate) mod monitor;

src/mc/mod.rs

@@ -3,4 +3,5 @@ pub mod rcon;
 pub mod server_properties;
 
 /// Minecraft ticks per second.
+#[allow(unused)]
 pub const TICKS_PER_SECOND: u32 = 20;

src/proto.rs

@@ -113,6 +113,7 @@ impl Client {
     }
 
     /// Set compression value.
+    #[allow(unused)]
     pub fn set_compression(&self, threshold: i32) {
         trace!(target: "lazymc", "Client now uses compression threshold of {}", threshold);
         self.compression.store(threshold, Ordering::Relaxed);
@@ -144,6 +145,7 @@ pub enum ClientState {
     Login,
 
     /// State to play on the server.
+    #[allow(unused)]
     Play,
 }
 

src/status.rs

@@ -16,6 +16,7 @@ use tokio::net::TcpStream;
 use tokio::time;
 
 use crate::config::*;
+#[cfg(feature = "lobby")]
 use crate::lobby;
 use crate::proto::{self, Client, ClientInfo, ClientState, RawPacket};
 use crate::server::{self, Server, State};
@@ -198,6 +199,7 @@ pub async fn serve(
                     }
 
                     // Lobby method, keep client in lobby while server starts
+                    #[cfg(feature = "lobby")]
                     Method::Lobby => {
                         trace!(target: "lazymc", "Using lobby method to occupy joining client");
 
@@ -209,9 +211,14 @@ pub async fn serve(
                         // Start lobby
                         lobby::serve(client, client_info, inbound, config, server, queue).await?;
                         return Ok(());
-
                         // TODO: do not consume client here, allow other join method on fail
                     }
+
+                    // Lobby method, keep client in lobby while server starts
+                    #[cfg(not(feature = "lobby"))]
+                    Method::Lobby => {
+                        error!(target: "lazymc", "Lobby join method not supported in this lazymc build");
+                    }
                 }
             }