How would I add an Item to Minecraft with mcp-reborn? [closed]

I am learning how to mod Minecraft, so I have very little experience with this yet (I have already made some resource packs). I am using MCP Reborn but I'm open to better suggestions. I have already decompiled and have been messing around with this for a couple of months but to no avail. I have already created the textures for this item.
Could someone please help me with this? (Minecraft Java Edition 1.17.1) (note: I do not want my mod to be dependent on other programs like forge.)

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2 Answers

This is how I would do this. This is not the only way. Make sure to replace all the placeholders (boring mod and boring item) with whatever you want.

Create a class something like this:

package me.mcblueparrot.mods.wow;
import net.minecraft.core.Registry;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.world.item.CreativeModeTab;
import net.minecraft.world.item.Item;
public class BoringMod { public static final BoringMod INSTANCE = new BoringMod(); public static final String NAMESPACE = "boringmod"; public void bootstrap() { Registry.register(Registry.ITEM, locationOf("boringitem") /* boringmod:boringitem */, new Item(new Item.Properties() .tab(CreativeModeTab.TAB_MATERIALS /* whatever tab you want */))); } private ResourceLocation locationOf(String path) { return new ResourceLocation(NAMESPACE, path); }
}

In net.minecraft.client.main.Main, add this:

BoringMod.INSTANCE.bootstrap();

after this (line 141)

CrashReport.preload();
Bootstrap.bootStrap();

In net.minecraft.client.resources.DefaultClientPackResources, change this:

super(p_174827_, "minecraft", "realms");

to

super(p_174827_, "minecraft", "realms", "boringmod");

Move your texture to "src/main/resources/assets/boringmod/textures/item/boringitem.png".

Create a new file in "src/main/resources/assets/boringmod/models/item/boringitem.json". The contents should look something like this:

{ "parent": "minecraft:item/generated", "textures": { "layer0": "boringmod:item/boringitem" }
}

Create another file at "src/main/resources/assets/boringmod/lang/en_us.json":

{ "item.boringmod.boringitem": "Boring Item"
}

Make sure to refresh the project if you are in Eclipse IDE.

When you start the game there should be a new item in the game (scroll down in the creative inventory).

Good luck modding! In future I would recommend a mod loader, or a patching system that makes updates and distribution easier.

23

Given you are open to other suggestions I would recommend MCreator. It is very simple to get going and integrates well into the game itself and makes the workflow very simple.

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