A Minecraft Forge mod that synchronizes player data across multiple servers using a MySQL backend.

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laforetbrut a85131708f Fix NeoForge attachment sync, kick system, and backpack upgrades 1. NeoForge attachments (SOL Onion, Ars Nouveau, etc.): - deserializeAttachments signature is (Provider, CompoundTag) not (CompoundTag) - reflection was failing silently, nothing restored - Use serializeAttachments(Provider) directly for saving instead of saveWithoutId() for cleaner approach - This fixes SOL Onion food diversity, Ars Nouveau mana/glyphs, Iron's Spellbooks, Pehkui scale, and all other NeoForge attachments 2. Multi-server kick: - Add secondary kick check in PlayerLoggedInEvent as fallback - Mark online=1 SYNCHRONOUSLY on login to close race condition where async doPlayerJoin hasn't set online=1 yet 3. Backpack upgrades: - Call refreshInventoryForInputOutput() before reading from BackpackStorage to flush pending wrapper changes Vyrriox		2026-03-26 17:22:21 +01:00
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.gitignore	add support for Minecraft 1.20.4 with ModDevGradle	2025-05-04 18:43:11 +00:00
build.gradle	Fix Sophisticated Storage shulkers/chests/barrels losing contents on transfer	2026-03-26 17:12:29 +01:00
docker-compose.yml	use volume for docker-compose db to persist data	2025-05-01 18:42:58 +00:00
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README.md

PlayerSync

PlayerSync is a Minecraft Forge mod that synchronizes player data across multiple servers using a MySQL backend. It allows players to maintain their inventory, equipment, experience, advancements, and more when moving between servers in a network.

Mod Support

Any other mods support is also possible.

Development Setup

Database Setup (Docker)

A docker-compose.yml file is provided for easily setting up a MariaDB database instance for development testing.

Make sure Docker is installed.
Inside your work directory run:
```
docker compose up -d
```
This will download the MariaDB image (if not already present) and start a database container in the background.
Stoppinng the Database
```
docker compose down
```

Data Persistence: The database uses a Docker volume, ensuring your data persists even if you stop and restart the containers.

Database Management Tool

The docker-compose.yml also includes an Adminer service, a lightweight database management tool.

Access Adminer in your web browser at http://localhost:8080.
Log in using the server with
- username: playersync
- database: playersync
- password: see docker-compose.yml

For debugging purposes, you can enable use_legacy_serialization to have readable database fields. This can cause crashes and unintended side-effects. Do not enable this on a production server if not absolutely necessary!

Running the Mod

The project uses Gradle for building and running. Use the provided Gradle wrapper (gradlew for Linux/macOS, gradlew.bat for Windows).

Make sure that the MySQL database you configured is running.
Run the Server
```
./gradlew runServer
```
or on Windows:
```
.\gradlew.bat runServer
```
This task compiles the mod and starts a dedicated Minecraft server instance with the mod loaded in the run directory.

Run the Client

./gradlew runClient

or on Windows:

.\gradlew.bat runClient