做出你的第一件 Forge 自定义道具

minecraft_version=1.20.1
forge_version=47.4.20
mapping_channel=official
mapping_version=1.20.1

mod_id=teacherma_item
mod_name=TeacherMa Item Tutorial
mod_license=All Rights Reserved
mod_version=1.0.0
mod_group_id=de.teacherma.itemtutorial
mod_authors=Teacher Ma
mod_description=A small Forge 1.20.1 tutorial mod that adds the Star Crystal item.

teacherma-forge-item/
├─ build.gradle
├─ gradle.properties
├─ gradlew.bat
└─ src/main/
   ├─ java/de/teacherma/itemtutorial/
   │  ├─ TeacherMaItemMod.java
   │  └─ item/
   │     └─ ModItems.java
   └─ resources/
      ├─ META-INF/
      │  └─ mods.toml
      ├─ assets/teacherma_item/
      │  ├─ lang/
      │  │  ├─ en_us.json
      │  │  └─ zh_cn.json
      │  ├─ models/item/
      │  │  └─ star_crystal.json
      │  └─ textures/item/
      │     └─ star_crystal.png
      └─ data/teacherma_item/recipes/
         └─ star_crystal.json

package de.teacherma.itemtutorial.item;

import de.teacherma.itemtutorial.TeacherMaItemMod;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.Rarity;
import net.minecraftforge.eventbus.api.IEventBus;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;
import net.minecraftforge.registries.RegistryObject;

public final class ModItems {
    public static final DeferredRegister<Item> ITEMS =
            DeferredRegister.create(ForgeRegistries.ITEMS, TeacherMaItemMod.MOD_ID);

    public static final RegistryObject<Item> STAR_CRYSTAL = ITEMS.register(
            "star_crystal",
            () -> new Item(new Item.Properties()
                    .stacksTo(16)
                    .rarity(Rarity.UNCOMMON))
    );

    private ModItems() {
    }

    public static void register(IEventBus eventBus) {
        ITEMS.register(eventBus);
    }
}

package de.teacherma.itemtutorial;

import de.teacherma.itemtutorial.item.ModItems;
import net.minecraft.world.item.CreativeModeTabs;
import net.minecraftforge.event.BuildCreativeModeTabContentsEvent;
import net.minecraftforge.eventbus.api.IEventBus;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;

@Mod(TeacherMaItemMod.MOD_ID)
public class TeacherMaItemMod {
    public static final String MOD_ID = "teacherma_item";

    public TeacherMaItemMod(FMLJavaModLoadingContext context) {
        IEventBus modEventBus = context.getModEventBus();

        ModItems.register(modEventBus);
        modEventBus.addListener(this::addCreativeTabItems);
    }

    private void addCreativeTabItems(BuildCreativeModeTabContentsEvent event) {
        if (event.getTabKey() == CreativeModeTabs.INGREDIENTS) {
            event.accept(ModItems.STAR_CRYSTAL);
        }
    }
}

{
  "item.teacherma_item.star_crystal": "星辉水晶"
}

{
  "item.teacherma_item.star_crystal": "Star Crystal"
}

{
  "parent": "minecraft:item/generated",
  "textures": {
    "layer0": "teacherma_item:item/star_crystal"
  }
}

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    " A ",
    "AGA",
    " A "
  ],
  "key": {
    "A": {
      "item": "minecraft:amethyst_shard"
    },
    "G": {
      "item": "minecraft:glowstone_dust"
    }
  },
  "result": {
    "item": "teacherma_item:star_crystal",
    "count": 1
  }
}

./gradlew.bat runClient

/give @s teacherma_item:star_crystal

./gradlew.bat clean build