plugins {
    id 'fabric-loom' version '1.10-SNAPSHOT'
    id 'maven-publish'
}

dependencies {
    minecraft "com.mojang:minecraft:${project.minecraft_version}"
    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
}

tasks.withType(JavaCompile).configureEach {
    it.options.encoding = "UTF-8"
    it.options.release = 21
}

org.gradle.jvmargs=-Xmx2G
minecraft_version=1.21.5
yarn_mappings=1.21.5+build.1
loader_version=0.16.13
fabric_version=0.120.0+1.21.5

dependencies {
    minecraft "com.mojang:minecraft:${project.minecraft_version}"
    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
}

pluginManagement {
    repositories {
        mavenCentral()  // 從 Maven Central 下載
        maven {         
            name = 'Fabric'
            url = 'https://maven.fabricmc.net/'  // 從 Fabric 下載
        }
    }
}

{
    "schemaVersion": 1,
    "id": "testmod", 
    "version": "1.0.0",
    "name": "example_mod",
    "description": "A mod example",
    "authors": "Felix",
    "environment": "*",
    "entrypoints": {
        "main": [
        "example.testmod"
      ]
    },
    "depends": {
        "fabricloader": ">=0.16.13",
        "fabric-api": "*",
        "minecraft": "1.21.5"
    }
  }
  

package starter;//所在資料夾

class PwP {
    PwP(){
        System.out.println("class PwP is running");
    }
    void hello(){
        System.out.println("Hello everyone.");
    }
    static void minecraftMovie(){
    	System.out.println("I ~~~  am steve.");
    }
}

public class QAQ {
    public static void main(String[]args){
        PwP person = new PwP();
        person.hello();
        PwP.minecraftMovie();
        
    }
}

public class hello {
    static void hello(){
        System.out.println("Hello World!");
    }
    public static void main(String[] args) {
        hello();
    }
}

public class hello {
    public static void main(String[] args) {
    	int a=1,b=1;
        if(a==b){
        	System.out.println("a=b");
        }
    }
}

public class hello {
    public static void main(String[] args) {
        while(true){
        	System.out.println("電腦要爆了QAQ")
        }
        for(int i = 1;i>0;i++){
        	System.out.println("炸電腦使我快樂")
        }
    }
}

package Starter
public class StarterMod implements ModInitializer {
    @Override
    public void onInitialize() {
        System.out.println("模組啟動！");
    }
}

final class testmodItems {
    private testmodItems() {
    }

    public static Item register
    (String path, Function<Item.Settings, Item> factory, Item.Settings settings) {
         final RegistryKey<Item> registryKey = 
         RegistryKey.of(RegistryKeys.ITEM, Identifier.of("testmod", path));
         return Items.register(registryKey, factory, settings);
    }

    public static final Item TEST_ITEM = 
    register("magicitem", Item::new, new Item.Settings());

    public static void initialize() {
    }
}

public class testmod implements ModInitializer {

    @Override
    public void onInitialize() {
        testmodItems.initialize();
        System.out.println("testmod is loaded!");
    }
}

class magicItem extends Item {
    public magicItem(Settings settings) {
        super(settings);
    }

    public ActionResult use(World world, PlayerEntity user, Hand hand) {
        if (!world.isClient) {
            user.heal(5.0F);
            user.getStackInHand(hand).decrement(1);
        }

        user.playSound(SoundEvents.BLOCK_WOOL_BREAK, 1.0F, 1.0F);
        return ActionResult.SUCCESS;
    }
    
}

public static final Item TEST_ITEM = 
    register("magicitem", magicItem::new, new Item.Settings());

final class testmodItemGroups {
    public static final RegistryKey<ItemGroup> TEST_GROUP_KEY = 
    RegistryKey.of(Registries.ITEM_GROUP.getKey(), Identifier.of("testmod", "test_group"));
    public static final ItemGroup TEST_GROUP = FabricItemGroup.builder()
		.icon(() -> new ItemStack(testmodItems.TEST_ITEM))
		.displayName(Text.translatable("itemGroup.testmod.test_group"))
		.build();
    public static void initialize() {
        Registry.register(Registries.ITEM_GROUP, TEST_GROUP_KEY, TEST_GROUP);
        ItemGroupEvents.modifyEntriesEvent(TEST_GROUP_KEY).register(content -> {
            content.add(testmodItems.TEST_ITEM);           //把物品加入物品類別
        });
    }
}

public class testmod implements ModInitializer {

    @Override
    public void onInitialize() {
        testmodItemsGroups.initialize();
        System.out.println("testmod is loaded!");
    }
}

{
  "parent": "item/generated", //2d物品
  "textures": {
    "layer0": "模組名稱:item/物品id" //圖片路徑
  }
}