Instructions for other versions: 1.19.3-1.20.4 | 1.19.2 | 1.14-1.16.5 | 1.17-1.17.1
Makes Kotlin Forge-friendly by doing the following:
- Provides Kotlin stdlib, reflection, JSON serialization, and coroutines libraries.
- Provides
KotlinLanguageLoader
to allow usage of object declarations as @Mod targets. - Provides
AutoKotlinEventBusSubscriber
to allow usage of object declarations as @EventBusSubscriber targets. - Provides useful utility functions and constants
A 1.21 Forge example mod is provided here: 1.21 KotlinModdingSkeleton Forge repository A 1.21 NeoForge example mod is provided here: 1.21 KotlinModdingSkeleton NeoForge repository
If you aren't sure where to start, make a fork of the KotlinModdingSkeleton repository (replace BRANCH with your version)
git clone --branch BRANCH https://github.com/thedarkcolour/KotlinModdingSkeleton.git
To implement in an existing project, merge the following into your build script:
Gradle
plugins {
// Adds the Kotlin Gradle plugin
id 'org.jetbrains.kotlin.jvm' version '2.0.21'
// OPTIONAL Kotlin Serialization plugin
//id 'org.jetbrains.kotlin.plugin.serialization' version '2.0.0'
}
repositories {
// Add KFF Maven repository
maven {
name = 'Kotlin for Forge'
url = 'https://thedarkcolour.github.io/KotlinForForge/'
}
}
dependencies {
// Adds KFF as dependency and Kotlin libs (use the variant matching your mod loader)
// FORGE (1.21+ ONLY)
implementation 'thedarkcolour:kfflang:5.6.0'
implementation 'thedarkcolour:kfflib:5.6.0'
implementation 'thedarkcolour:kffmod:5.6.0'
// NEOFORGE
implementation 'thedarkcolour:kotlinforforge-neoforge:5.6.0'
}
// ONLY ON REGULAR FORGE
sourceSets.each {
def dir = layout.buildDirectory.dir("sourcesSets/$it.name")
it.output.resourcesDir = dir
it.java.destinationDirectory = dir
it.kotlin.destinationDirectory = dir
}
Gradle (Kotlin)
plugins {
// Adds the Kotlin Gradle plugin
kotlin("jvm") version "2.0.21"
// OPTIONAL Kotlin Serialization plugin
//kotlin("plugin.serialization") version "2.0.0"
}
repositories {
// Add KFF Maven repository
maven {
name = "Kotlin for Forge"
setUrl("https://thedarkcolour.github.io/KotlinForForge/")
}
}
dependencies {
// Adds KFF as dependency and Kotlin libs (use the variant matching your mod loader)
// FORGE (1.21+ ONLY)
implementation("thedarkcolour:kfflang:5.6.0")
implementation("thedarkcolour:kfflib:5.6.0")
implementation("thedarkcolour:kffmod:5.6.0")
// NEOFORGE
implementation("thedarkcolour:kotlinforforge-neoforge:5.6.0")
}
// ONLY ON REGULAR FORGE
sourceSets.configureEach {
val dir = layout.buildDirectory.dir("sourcesSets/$name")
output.setResourcesDir(dir)
java.destinationDirectory.set(dir)
kotlin.destinationDirectory.set(dir)
}
Then, change the following to your neoforge.mods.toml file:
modLoader="kotlinforforge"
# Change this if you require a certain version of KotlinForForge
loaderVersion="[5.6,)"
Use thedarkcolour.kotlinforforge.forge.MOD_BUS
instead of
instead of net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext