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Allow Saving of Oversized Chunks - READ COMMIT DETAILS!!!
Please test this build on a local TEST SERVER before sending to your live server!

PaperMC is not responsible for any data loss to your chunks.

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The Minecraft World Region File format has a hard cap of 1MB per chunk.
This is due to the fact that the header of the file format only allocates
a single byte for sector count, meaning a maximum of 256 sectors, at 4k per sector.

This limit can be reached fairly easily with books, resulting in the chunk being unable
to save to the world. Worse off, is that nothing printed when this occured, and silently
performed a chunk rollback on next load.

This leads to security risk with duplication and is being actively exploited.

This patch catches the too large scenario, falls back and moves any large Entity
or Tile Entity into a new compound, and this compound is saved into a different file.

On Chunk Load, we check for oversized status, and if so, we load the extra file and
merge the Entities and Tile Entities from the oversized chunk back into the level to
then be loaded as normal.

Once a chunk is returned back to normal size, the oversized flag will clear, and no
extra data file will exist.

This fix maintains compatability with all existing Anvil Region Format tools as it
does not alter the save format. They will just not know about the extra entities.

This fix also maintains compatability if someone switches server jars to one without
this fix, as the data will remain in the oversized file. Once the server returns
to a jar with this fix, the data will be restored.
2019-02-15 20:13:38 -05:00
.github/ISSUE_TEMPLATE [CI-SKIP] Update Issue template 2018-09-26 17:22:20 -04:00
licenses [CI-SKIP] Clarify project licensing 2018-03-06 20:41:03 -05:00
removed [CI-SKIP] Move removed patches back down a level 2018-09-01 15:39:16 -04:00
scripts Fix newline inconsistencies from libraries 2019-02-10 21:53:53 +00:00
Spigot-API-Patches Fix NPE during server initialization from server list pings 2019-02-06 19:15:46 +00:00
Spigot-Server-Patches Allow Saving of Oversized Chunks - READ COMMIT DETAILS!!! 2019-02-15 20:13:38 -05:00
work Update upstream CB 2019-02-13 09:07:12 -05:00
.editorconfig [CI-SKIP] add .editorconfig for base code style settings 2018-08-07 01:14:22 -04:00
.gitignore Switch to using ForgeFlower for Paper Only mc-dev imports 2018-08-31 23:47:57 -04:00
.gitmodules Cleanup and restructure the project 2016-04-01 23:15:41 -05:00
.travis.yml [CI-SKIP] Have travis ensure openjdk11 builds run 2018-10-24 16:26:47 -04:00
CONTRIBUTING.md [CI-SKIP] Add note on 1.12.2 status to CONTRIBUTING.md 2018-09-11 18:11:28 -04:00
LICENSE.md Change the reserved channel check to be sensible (#1610) 2018-11-30 19:08:31 -05:00
paper Try and make zsh complain less 2018-10-24 12:36:37 -04:00
pom.xml Fix up maven stuff hopefully 2018-09-22 12:58:09 -04:00
README.md [CI-SKIP] Update artifact information in readme (#1652) 2018-11-06 09:24:32 -05:00

Paper Build Status

High performance Spigot fork 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

How To (Plugin Developers)

  • See our API patches here
  • See upcoming, pending, and recently added API here
  • Paper API javadocs here: papermc.io/javadocs
  • Maven Repo (for paper-api):
<repository>
    <id>papermc</id>
    <url>https://papermc.io/repo/repository/maven-public/</url>
</repository>
  • Artifact Information:
<dependency>
    <groupId>com.destroystokyo.paper</groupId>
    <artifactId>paper-api</artifactId>
    <version>1.13.2-R0.1-SNAPSHOT</version>
    <scope>provided</scope>
 </dependency>

How To (Compiling Jar From Source)

To compile Paper, you need JDK 8, maven, and an internet connection.

Clone this repo, run ./paper jar from bash, get files.

How To (Pull Request)

See Contributing

Special Thanks To:

YourKit-Logo

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.