MixinCreativeModeTabs_REDSTONE.java

package com.stevekung.snapshottest.mixin.test;

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;

import net.minecraft.nbt.CompoundTag;
import net.minecraft.world.flag.FeatureFlagSet;
import net.minecraft.world.item.CreativeModeTab;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.block.LightBlock;

@Mixin(targets = "net.minecraft.world.item.CreativeModeTabs$4")
public class MixinCreativeModeTabs_REDSTONE
{
    @Inject(method = "generateDisplayItems", at = @At(value = "FIELD", target = "net/minecraft/world/item/Items.LIGHT:Lnet/minecraft/world/item/Item;"))
    private void addNewLightBlock(FeatureFlagSet featureFlagSet, CreativeModeTab.Output output, boolean canUseGameMasterBlocks, CallbackInfo info)
    {
        for (var i = 0; i < 15; i++)
        {
            var itemStack = new ItemStack(Items.LIGHT);
            var compoundTag = new CompoundTag();
            compoundTag.putString(LightBlock.LEVEL.getName(), String.valueOf(i));
            itemStack.addTagElement("BlockStateTag", compoundTag);
            output.accept(itemStack);
        }
    }

    @Inject(method = "generateDisplayItems", at = @At(value = "FIELD", target = "net/minecraft/world/item/Items.JIGSAW:Lnet/minecraft/world/item/Item;"))
    private void addStructureBlock(FeatureFlagSet featureFlagSet, CreativeModeTab.Output output, boolean canUseGameMasterBlocks, CallbackInfo info)
    {
        output.accept(Items.STRUCTURE_BLOCK);
    }
}