package net.minecraft.advancements.critereon; import com.mojang.serialization.Codec; import com.mojang.serialization.codecs.RecordCodecBuilder; import com.mojang.serialization.codecs.RecordCodecBuilder.Instance; import java.util.Optional; import net.minecraft.advancements.CriteriaTriggers; import net.minecraft.advancements.Criterion; import net.minecraft.server.level.ServerPlayer; import net.minecraft.world.entity.npc.AbstractVillager; import net.minecraft.world.item.ItemStack; import net.minecraft.world.level.storage.loot.LootContext; public class TradeTrigger extends SimpleCriterionTrigger { @Override public Codec codec() { return TradeTrigger.TriggerInstance.CODEC; } public void trigger(ServerPlayer p_70960_, AbstractVillager p_70961_, ItemStack p_70962_) { LootContext lootcontext = EntityPredicate.createContext(p_70960_, p_70961_); this.trigger(p_70960_, p_70970_ -> p_70970_.matches(lootcontext, p_70962_)); } public record TriggerInstance(Optional player, Optional villager, Optional item) implements SimpleCriterionTrigger.SimpleInstance { public static final Codec CODEC = RecordCodecBuilder.create( p_325256_ -> p_325256_.group( EntityPredicate.ADVANCEMENT_CODEC.optionalFieldOf("player").forGetter(TradeTrigger.TriggerInstance::player), EntityPredicate.ADVANCEMENT_CODEC.optionalFieldOf("villager").forGetter(TradeTrigger.TriggerInstance::villager), ItemPredicate.CODEC.optionalFieldOf("item").forGetter(TradeTrigger.TriggerInstance::item) ) .apply(p_325256_, TradeTrigger.TriggerInstance::new) ); public static Criterion tradedWithVillager() { return CriteriaTriggers.TRADE.createCriterion(new TradeTrigger.TriggerInstance(Optional.empty(), Optional.empty(), Optional.empty())); } public static Criterion tradedWithVillager(EntityPredicate.Builder p_191437_) { return CriteriaTriggers.TRADE .createCriterion(new TradeTrigger.TriggerInstance(Optional.of(EntityPredicate.wrap(p_191437_)), Optional.empty(), Optional.empty())); } public boolean matches(LootContext p_70985_, ItemStack p_70986_) { return this.villager.isPresent() && !this.villager.get().matches(p_70985_) ? false : !this.item.isPresent() || this.item.get().test(p_70986_); } @Override public void validate(CriterionValidator p_309853_) { SimpleCriterionTrigger.SimpleInstance.super.validate(p_309853_); p_309853_.validateEntity(this.villager, ".villager"); } @Override public Optional player() { return this.player; } } }