e2f0efd1af
This method was used pre 1.17 era where an Entity was explicitly tied to a (then called) Chunk's entity slices. If an entity was not inside a Chunk, then it was considered invalid as it was not possible to save the entity. In 1.17+, entities are now tied to a separately tracked entity section management system. This system is far more reliable now as it no longer requires a full chunk load to properly track entities for saving. As a result, an Entity if inside the world is always attached to some entity chunk section (except in rare cases in Vanilla which are fixed in Moonrise). As a result, whether the chunk the entity is in is loaded is no longer an indication of whether they are tracked in the world and we can reliably infer that the entity is correctly in the world through the valid field alone. Additionally drop the isInWorld() check, as valid=true implies isInWorld=true. More importantly, the isInWorld() check invokes getHandle which may trip a thread check on Folia. This will fix World#getEntities() and friends exploding on Folia. However, World#getEntities() on Folia still cannot reliably return all entities in the world as actions such as cross-region (not cross-world) teleporting will remove entities from the world.
Paper 
The most widely used, high-performance Minecraft server that aims to fix gameplay and mechanics inconsistencies.
Support and Project Discussion:
How To (Server Admins)
Paperclip is a jar file that you can download and run just like a normal jar file.
Download Paper from our downloads page.
Run the Paperclip jar directly from your server. Just like old times
- Documentation on using Paper: docs.papermc.io
- For a sneak peek at upcoming features, see here
How To (Plugin Developers)
- See our API here
- See upcoming, pending, and recently added API here
- Paper API javadocs here: papermc.io/javadocs
Repository (for paper-api)
Maven
<repository>
<id>papermc</id>
<url>https://repo.papermc.io/repository/maven-public/</url>
</repository>
<dependency>
<groupId>io.papermc.paper</groupId>
<artifactId>paper-api</artifactId>
<version>1.21.4-R0.1-SNAPSHOT</version>
<scope>provided</scope>
</dependency>
Gradle
repositories {
maven {
url = uri("https://repo.papermc.io/repository/maven-public/")
}
}
dependencies {
compileOnly("io.papermc.paper:paper-api:1.21.4-R0.1-SNAPSHOT")
}
java {
toolchain.languageVersion.set(JavaLanguageVersion.of(21))
}
How To (Compiling Jar From Source)
To compile Paper, you need JDK 21 and an internet connection.
Clone this repo, run ./gradlew applyPatches, then ./gradlew createMojmapBundlerJar from your terminal. You can find the compiled jar in the paper-server/build/libs directory.
To get a full list of tasks, run ./gradlew tasks.
How To (Pull Request)
See Contributing
Old Versions (1.21.3 and below)
For branches of versions 1.8-1.21.3, please see our archive repository.
Support Us
First of all, thank you for considering helping out, we really appreciate that!
PaperMC has various recurring expenses, mostly related to infrastructure. Paper uses Open Collective via the Open Source Collective fiscal host to manage expenses. Open Collective allows us to be extremely transparent, so you can always see how your donations are used. You can read more about financially supporting PaperMC on our website.
You can find our collective here, or you can donate via GitHub Sponsors here, which will also go towards the collective.
Special Thanks To:
YourKit, makers of the outstanding java profiler, support open source projects of all kinds with their full featured Java and .NET application profilers. We thank them for granting Paper an OSS license so that we can make our software the best it can be.
JetBrains, creators of the IntelliJ IDEA, supports Paper with one of their Open Source Licenses. IntelliJ IDEA is the recommended IDE for working with Paper, and most of the Paper team uses it.
All our sponsors!
