src/game/java/net/minecraft/data/loot/packs/VanillaShearingLoot.java

package net.minecraft.data.loot.packs;

import java.util.function.BiConsumer;
import net.minecraft.advancements.critereon.EntityPredicate;
import net.minecraft.advancements.critereon.EntitySubPredicates;
import net.minecraft.core.HolderLookup;
import net.minecraft.data.loot.EntityLootSubProvider;
import net.minecraft.data.loot.LootTableSubProvider;
import net.minecraft.resources.ResourceKey;
import net.minecraft.world.entity.animal.MushroomCow;
import net.minecraft.world.item.DyeColor;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.ItemLike;
import net.minecraft.world.level.storage.loot.BuiltInLootTables;
import net.minecraft.world.level.storage.loot.LootContext;
import net.minecraft.world.level.storage.loot.LootPool;
import net.minecraft.world.level.storage.loot.LootTable;
import net.minecraft.world.level.storage.loot.entries.AlternativesEntry;
import net.minecraft.world.level.storage.loot.entries.LootItem;
import net.minecraft.world.level.storage.loot.entries.NestedLootTable;
import net.minecraft.world.level.storage.loot.functions.SetItemCountFunction;
import net.minecraft.world.level.storage.loot.predicates.LootItemEntityPropertyCondition;
import net.minecraft.world.level.storage.loot.providers.number.ConstantValue;
import net.minecraft.world.level.storage.loot.providers.number.UniformGenerator;

public record VanillaShearingLoot(HolderLookup.Provider registries) implements LootTableSubProvider {
    @Override
    public void generate(BiConsumer<ResourceKey<LootTable>, LootTable.Builder> p_330494_) {
        p_330494_.accept(
            BuiltInLootTables.BOGGED_SHEAR,
            LootTable.lootTable()
                .withPool(
                    LootPool.lootPool()
                        .setRolls(ConstantValue.exactly(2.0F))
                        .add(LootItem.lootTableItem(Items.BROWN_MUSHROOM).apply(SetItemCountFunction.setCount(ConstantValue.exactly(1.0F))))
                        .add(LootItem.lootTableItem(Items.RED_MUSHROOM).apply(SetItemCountFunction.setCount(ConstantValue.exactly(1.0F))))
                )
        );
        LootData.WOOL_ITEM_BY_DYE
            .forEach(
                (p_368887_, p_367035_) -> p_330494_.accept(
                        BuiltInLootTables.SHEAR_SHEEP_BY_DYE.get(p_368887_),
                        LootTable.lootTable()
                            .withPool(LootPool.lootPool().setRolls(UniformGenerator.between(1.0F, 3.0F)).add(LootItem.lootTableItem(p_367035_)))
                    )
            );
        p_330494_.accept(BuiltInLootTables.SHEAR_SHEEP, LootTable.lootTable().withPool(EntityLootSubProvider.createSheepDispatchPool(BuiltInLootTables.SHEAR_SHEEP_BY_DYE)));
        p_330494_.accept(
            BuiltInLootTables.SHEAR_MOOSHROOM,
            LootTable.lootTable()
                .withPool(
                    LootPool.lootPool()
                        .add(
                            AlternativesEntry.alternatives(
                                NestedLootTable.lootTableReference(BuiltInLootTables.SHEAR_RED_MOOSHROOM)
                                    .when(
                                        LootItemEntityPropertyCondition.hasProperties(
                                            LootContext.EntityTarget.THIS,
                                            EntityPredicate.Builder.entity().subPredicate(EntitySubPredicates.MOOSHROOM.createPredicate(MushroomCow.Variant.RED))
                                        )
                                    ),
                                NestedLootTable.lootTableReference(BuiltInLootTables.SHEAR_BROWN_MOOSHROOM)
                                    .when(
                                        LootItemEntityPropertyCondition.hasProperties(
                                            LootContext.EntityTarget.THIS,
                                            EntityPredicate.Builder.entity().subPredicate(EntitySubPredicates.MOOSHROOM.createPredicate(MushroomCow.Variant.BROWN))
                                        )
                                    )
                            )
                        )
                )
        );
        p_330494_.accept(
            BuiltInLootTables.SHEAR_RED_MOOSHROOM,
            LootTable.lootTable().withPool(LootPool.lootPool().setRolls(ConstantValue.exactly(5.0F)).add(LootItem.lootTableItem(Items.RED_MUSHROOM)))
        );
        p_330494_.accept(
            BuiltInLootTables.SHEAR_BROWN_MOOSHROOM,
            LootTable.lootTable().withPool(LootPool.lootPool().setRolls(ConstantValue.exactly(5.0F)).add(LootItem.lootTableItem(Items.BROWN_MUSHROOM)))
        );
        p_330494_.accept(
            BuiltInLootTables.SHEAR_SNOW_GOLEM,
            LootTable.lootTable().withPool(LootPool.lootPool().setRolls(ConstantValue.exactly(1.0F)).add(LootItem.lootTableItem(Items.CARVED_PUMPKIN)))
        );
    }
}