"entrypoints": "main": [ "adapter": "kotlin", "value": "com.yourname.awesome.mod.ExampleModKt" ] , "depends": "fabric-language-kotlin": ">=1.10.0"
“But isn’t Kotlin slower?” – Not meaningfully. Kotlin compiles to the same bytecode as Java. In fact, inline functions and smart casts can produce more optimized bytecode than equivalent Java. kotlin for fabric
// Usage if (world.isSkyExposed(pos)) ... Define a custom component for your mod’s energy system: "entrypoints": "main": [ "adapter": "kotlin", "value": "com
dependencies modImplementation("net.fabricmc:fabric-loader:0.14.24") modImplementation("net.fabricmc.fabric-api:fabric-api:0.91.0+1.20.4") // Usage if (world
| Feature | Benefit for Modders | | :--- | :--- | | | Forget @Nullable annotations. The compiler enforces null safety, eliminating NullPointerException crashes. | | Data Classes | One line of code for ItemStack , BlockPos , or custom component holders. | | Extension Functions | Add methods to PlayerEntity or World without inheritance or wrappers. | | Coroutines | Write asynchronous tasks (e.g., HTTP requests, delayed actions) without callback hell. | | Immutability | val over var encourages thread-safe, predictable code. | Setting Up a Kotlin Fabric Project Fabric does not natively support Kotlin, but the community maintains Fabric Language Kotlin (FabricLKotlin) . Think of it as the Kotlin runtime for Fabric. Step 1: Use the Template The easiest way is to use the official template: