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

package net.minecraft.data.loot.packs;

import java.util.function.BiConsumer;
import net.minecraft.core.HolderLookup;
import net.minecraft.core.registries.Registries;
import net.minecraft.data.loot.LootTableSubProvider;
import net.minecraft.resources.ResourceKey;
import net.minecraft.world.item.Items;
import net.minecraft.world.item.alchemy.Potions;
import net.minecraft.world.item.enchantment.Enchantment;
import net.minecraft.world.item.enchantment.Enchantments;
import net.minecraft.world.level.storage.loot.BuiltInLootTables;
import net.minecraft.world.level.storage.loot.LootPool;
import net.minecraft.world.level.storage.loot.LootTable;
import net.minecraft.world.level.storage.loot.entries.LootItem;
import net.minecraft.world.level.storage.loot.functions.EnchantRandomlyFunction;
import net.minecraft.world.level.storage.loot.functions.SetItemCountFunction;
import net.minecraft.world.level.storage.loot.functions.SetPotionFunction;
import net.minecraft.world.level.storage.loot.providers.number.ConstantValue;
import net.minecraft.world.level.storage.loot.providers.number.UniformGenerator;

public record VanillaPiglinBarterLoot(HolderLookup.Provider registries) implements LootTableSubProvider {
    @Override
    public void generate(BiConsumer<ResourceKey<LootTable>, LootTable.Builder> p_250176_) {
        HolderLookup.RegistryLookup<Enchantment> registrylookup = this.registries.lookupOrThrow(Registries.ENCHANTMENT);
        p_250176_.accept(
            BuiltInLootTables.PIGLIN_BARTERING,
            LootTable.lootTable()
                .withPool(
                    LootPool.lootPool()
                        .setRolls(ConstantValue.exactly(1.0F))
                        .add(
                            LootItem.lootTableItem(Items.BOOK)
                                .setWeight(5)
                                .apply(new EnchantRandomlyFunction.Builder().withEnchantment(registrylookup.getOrThrow(Enchantments.SOUL_SPEED)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.IRON_BOOTS)
                                .setWeight(8)
                                .apply(new EnchantRandomlyFunction.Builder().withEnchantment(registrylookup.getOrThrow(Enchantments.SOUL_SPEED)))
                        )
                        .add(LootItem.lootTableItem(Items.POTION).setWeight(8).apply(SetPotionFunction.setPotion(Potions.FIRE_RESISTANCE)))
                        .add(LootItem.lootTableItem(Items.SPLASH_POTION).setWeight(8).apply(SetPotionFunction.setPotion(Potions.FIRE_RESISTANCE)))
                        .add(LootItem.lootTableItem(Items.POTION).setWeight(10).apply(SetPotionFunction.setPotion(Potions.WATER)))
                        .add(
                            LootItem.lootTableItem(Items.IRON_NUGGET).setWeight(10).apply(SetItemCountFunction.setCount(UniformGenerator.between(10.0F, 36.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.ENDER_PEARL).setWeight(10).apply(SetItemCountFunction.setCount(UniformGenerator.between(2.0F, 4.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.STRING).setWeight(20).apply(SetItemCountFunction.setCount(UniformGenerator.between(3.0F, 9.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.QUARTZ).setWeight(20).apply(SetItemCountFunction.setCount(UniformGenerator.between(5.0F, 12.0F)))
                        )
                        .add(LootItem.lootTableItem(Items.OBSIDIAN).setWeight(40))
                        .add(
                            LootItem.lootTableItem(Items.CRYING_OBSIDIAN).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(1.0F, 3.0F)))
                        )
                        .add(LootItem.lootTableItem(Items.FIRE_CHARGE).setWeight(40))
                        .add(
                            LootItem.lootTableItem(Items.LEATHER).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(2.0F, 4.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.SOUL_SAND).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(2.0F, 8.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.NETHER_BRICK).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(2.0F, 8.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.SPECTRAL_ARROW).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(6.0F, 12.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.GRAVEL).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(8.0F, 16.0F)))
                        )
                        .add(
                            LootItem.lootTableItem(Items.BLACKSTONE).setWeight(40).apply(SetItemCountFunction.setCount(UniformGenerator.between(8.0F, 16.0F)))
                        )
                )
        );
    }
}