init

src/client/java/com/vaporvee/testmod/TestModClient.java

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+package com.vaporvee.testmod;
+
+import net.fabricmc.api.ClientModInitializer;
+
+public class TestModClient implements ClientModInitializer {
+	@Override
+	public void onInitializeClient() {
+		// This entrypoint is suitable for setting up client-specific logic, such as rendering.
+	}
+}

src/client/java/com/vaporvee/testmod/mixin/client/ExampleClientMixin.java

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+package com.vaporvee.testmod.mixin.client;
+
+import net.minecraft.client.MinecraftClient;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(MinecraftClient.class)
+public class ExampleClientMixin {
+	@Inject(at = @At("HEAD"), method = "run")
+	private void init(CallbackInfo info) {
+		// This code is injected into the start of MinecraftClient.run()V
+	}
+}

src/client/resources/testmod.client.mixins.json

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+{
+	"required": true,
+	"package": "com.vaporvee.testmod.mixin.client",
+	"compatibilityLevel": "JAVA_21",
+	"client": [
+		"ExampleClientMixin"
+	],
+	"injectors": {
+		"defaultRequire": 1
+	}
+}

src/main/java/com/vaporvee/testmod/TestMod.java

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+package com.vaporvee.testmod;
+
+import net.fabricmc.api.ModInitializer;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TestMod implements ModInitializer {
+	public static final String MOD_ID = "testmod";
+
+	// This logger is used to write text to the console and the log file.
+	// It is considered best practice to use your mod id as the logger's name.
+	// That way, it's clear which mod wrote info, warnings, and errors.
+	public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
+
+	@Override
+	public void onInitialize() {
+		// This code runs as soon as Minecraft is in a mod-load-ready state.
+		// However, some things (like resources) may still be uninitialized.
+		// Proceed with mild caution.
+
+		LOGGER.info("Hello Fabric world!");
+	}
+}

src/main/java/com/vaporvee/testmod/mixin/ExampleMixin.java

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+package com.vaporvee.testmod.mixin;
+
+import net.minecraft.server.MinecraftServer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(MinecraftServer.class)
+public class ExampleMixin {
+	@Inject(at = @At("HEAD"), method = "loadWorld")
+	private void init(CallbackInfo info) {
+		// This code is injected into the start of MinecraftServer.loadWorld()V
+	}
+}

src/main/resources/fabric.mod.json

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+{
+	"schemaVersion": 1,
+	"id": "testmod",
+	"version": "${version}",
+	"name": "TestMod",
+	"description": "This is an example description! Tell everyone what your mod is about!",
+	"authors": [
+		"Me!"
+	],
+	"contact": {
+		"homepage": "https://fabricmc.net/",
+		"sources": "https://github.com/FabricMC/fabric-example-mod"
+	},
+	"license": "CC0-1.0",
+	"icon": "assets/testmod/icon.png",
+	"environment": "*",
+	"entrypoints": {
+		"main": [
+			"com.vaporvee.testmod.TestMod"
+		],
+		"client": [
+			"com.vaporvee.testmod.TestModClient"
+		]
+	},
+	"mixins": [
+		"testmod.mixins.json",
+		{
+			"config": "testmod.client.mixins.json",
+			"environment": "client"
+		}
+	],
+	"depends": {
+		"fabricloader": ">=0.16.5",
+		"minecraft": "~1.21.1",
+		"java": ">=21",
+		"fabric-api": "*"
+	},
+	"suggests": {
+		"another-mod": "*"
+	}
+}

src/main/resources/testmod.mixins.json

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+{
+	"required": true,
+	"package": "com.vaporvee.testmod.mixin",
+	"compatibilityLevel": "JAVA_21",
+	"mixins": [
+		"ExampleMixin"
+	],
+	"injectors": {
+		"defaultRequire": 1
+	}
+}