Gradle Multi-Project Setup for Minecraft Mod

It sounds like you’re having a tough time syncing your common module with Minecraft’s net.minecraft packages, especially when transitioning from Forge to Paper.

Common Module Configuration

For your common module to recognize the net.minecraft.* packages, you’ll need to set up dependencies properly. Since Forge and Paper have different setups, it’s important to include the right dependencies for Paper in your common module.

Step 1: Add Paper dependency

In your root build.gradle, make sure you’re specifying where to pull the Paper API from. You might want to add something similar to this:

    allprojects {
        repositories {
            mavenCentral()
            maven { url "https://repo.papermc.io/repository/maven-public/" }
        }
    }
    

Step 2: Include Minecraft Dependencies

Since common should share code with both Forge and Paper, you’ll need to handle dependencies for both. In your common/build.gradle, try adding:

    dependencies {
        compileOnly 'org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT'
    }
    

This example pulls in the Spigot API, which is what Paper is built on. You might need to adjust the version to match your server’s version.

Step 3: Make Sure Modules Are Linked

Ensure that your forge and paper modules depend on common. In their respective build.gradle files, add:

    dependencies {
        implementation project(':common')
    }
    

Step 4: Syncing Gradle

After making these changes, sync your Gradle project. If done correctly, your common module should now recognize the Minecraft classes.

Troubleshooting

If you’re still having issues, check your version numbers and make sure they match between your Minecraft server and the dependencies you’re including. Sometimes, other mods or plugins could also interfere. Make sure your settings.gradle properly includes all modules:

    include 'common', 'forge', 'paper'
    

Final Tip

Don’t hesitate to look at other open-source mods for their Gradle setups. They can provide a wealth of information to adapt to your structure. Good luck!