minecraft-source/src/net/minecraft/advancements/critereon/InventoryChangeTrigger.java

package net.minecraft.advancements.critereon;

import java.util.Iterator;
import net.minecraft.world.item.ItemStack;
import java.util.List;
import com.google.common.collect.Lists;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import net.minecraft.world.item.alchemy.Potion;
import net.minecraft.world.item.Item;
import net.minecraft.tags.Tag;
import net.minecraft.world.level.ItemLike;
import net.minecraft.advancements.CriterionTriggerInstance;
import net.minecraft.world.entity.player.Inventory;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.util.GsonHelper;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonObject;
import net.minecraft.resources.ResourceLocation;

public class InventoryChangeTrigger extends SimpleCriterionTrigger<TriggerInstance> {
    private static final ResourceLocation ID;
    
    @Override
    public ResourceLocation getId() {
        return InventoryChangeTrigger.ID;
    }
    
    @Override
    public TriggerInstance createInstance(final JsonObject jsonObject, final JsonDeserializationContext jsonDeserializationContext) {
        final JsonObject jsonObject2 = GsonHelper.getAsJsonObject(jsonObject, "slots", new JsonObject());
        final MinMaxBounds.Ints d5 = MinMaxBounds.Ints.fromJson(jsonObject2.get("occupied"));
        final MinMaxBounds.Ints d6 = MinMaxBounds.Ints.fromJson(jsonObject2.get("full"));
        final MinMaxBounds.Ints d7 = MinMaxBounds.Ints.fromJson(jsonObject2.get("empty"));
        final ItemPredicate[] arr8 = ItemPredicate.fromJsonArray(jsonObject.get("items"));
        return new TriggerInstance(d5, d6, d7, arr8);
    }
    
    public void trigger(final ServerPlayer xe, final Inventory ayi) {
        this.trigger(xe.getAdvancements(), a -> a.matches(ayi));
    }
    
    static {
        ID = new ResourceLocation("inventory_changed");
    }
    
    public static class TriggerInstance extends AbstractCriterionTriggerInstance {
        private final MinMaxBounds.Ints slotsOccupied;
        private final MinMaxBounds.Ints slotsFull;
        private final MinMaxBounds.Ints slotsEmpty;
        private final ItemPredicate[] predicates;
        
        public TriggerInstance(final MinMaxBounds.Ints d1, final MinMaxBounds.Ints d2, final MinMaxBounds.Ints d3, final ItemPredicate[] arr) {
            super(InventoryChangeTrigger.ID);
            this.slotsOccupied = d1;
            this.slotsFull = d2;
            this.slotsEmpty = d3;
            this.predicates = arr;
        }
        
        public static TriggerInstance hasItem(final ItemPredicate... arr) {
            return new TriggerInstance(MinMaxBounds.Ints.ANY, MinMaxBounds.Ints.ANY, MinMaxBounds.Ints.ANY, arr);
        }
        
        public static TriggerInstance hasItem(final ItemLike... arr) {
            final ItemPredicate[] arr2 = new ItemPredicate[arr.length];
            for (int integer3 = 0; integer3 < arr.length; ++integer3) {
                arr2[integer3] = new ItemPredicate(null, arr[integer3].asItem(), MinMaxBounds.Ints.ANY, MinMaxBounds.Ints.ANY, EnchantmentPredicate.NONE, EnchantmentPredicate.NONE, null, NbtPredicate.ANY);
            }
            return hasItem(arr2);
        }
        
        @Override
        public JsonElement serializeToJson() {
            final JsonObject jsonObject2 = new JsonObject();
            if (!this.slotsOccupied.isAny() || !this.slotsFull.isAny() || !this.slotsEmpty.isAny()) {
                final JsonObject jsonObject3 = new JsonObject();
                jsonObject3.add("occupied", this.slotsOccupied.serializeToJson());
                jsonObject3.add("full", this.slotsFull.serializeToJson());
                jsonObject3.add("empty", this.slotsEmpty.serializeToJson());
                jsonObject2.add("slots", jsonObject3);
            }
            if (this.predicates.length > 0) {
                final JsonArray jsonArray3 = new JsonArray();
                for (final ItemPredicate bj7 : this.predicates) {
                    jsonArray3.add(bj7.serializeToJson());
                }
                jsonObject2.add("items", jsonArray3);
            }
            return jsonObject2;
        }
        
        public boolean matches(final Inventory ayi) {
            int integer3 = 0;
            int integer4 = 0;
            int integer5 = 0;
            final List<ItemPredicate> list6 = Lists.<ItemPredicate>newArrayList(this.predicates);
            for (int integer6 = 0; integer6 < ayi.getContainerSize(); ++integer6) {
                final ItemStack ben8 = ayi.getItem(integer6);
                if (ben8.isEmpty()) {
                    ++integer4;
                }
                else {
                    ++integer5;
                    if (ben8.getCount() >= ben8.getMaxStackSize()) {
                        ++integer3;
                    }
                    final Iterator<ItemPredicate> iterator9 = list6.iterator();
                    while (iterator9.hasNext()) {
                        final ItemPredicate bj10 = iterator9.next();
                        if (bj10.matches(ben8)) {
                            iterator9.remove();
                        }
                    }
                }
            }
            return this.slotsFull.matches(integer3) && this.slotsEmpty.matches(integer4) && this.slotsOccupied.matches(integer5) && list6.isEmpty();
        }
    }
}