92 lines
2.5 KiB
Java
92 lines
2.5 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2019.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.common.crafting.conditions;
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import com.google.gson.JsonObject;
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import net.minecraft.item.Item;
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import net.minecraft.tags.ItemTags;
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import net.minecraft.tags.Tag;
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import net.minecraft.util.JSONUtils;
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import net.minecraft.util.ResourceLocation;
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public class TagEmptyCondition implements ICondition
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{
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private static final ResourceLocation NAME = new ResourceLocation("forge", "tag_empty");
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private final ResourceLocation tag_name;
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public TagEmptyCondition(String location)
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{
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this(new ResourceLocation(location));
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}
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public TagEmptyCondition(String namespace, String path)
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{
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this(new ResourceLocation(namespace, path));
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}
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public TagEmptyCondition(ResourceLocation tag)
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{
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this.tag_name = tag;
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}
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@Override
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public ResourceLocation getID()
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{
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return NAME;
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}
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@Override
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public boolean test()
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{
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Tag<Item> tag = ItemTags.getCollection().get(tag_name);
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return tag == null || tag.getAllElements().isEmpty();
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}
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@Override
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public String toString()
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{
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return "tag_empty(\"" + tag_name + "\")";
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}
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public static class Serializer implements IConditionSerializer<TagEmptyCondition>
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{
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public static final Serializer INSTANCE = new Serializer();
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@Override
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public void write(JsonObject json, TagEmptyCondition value)
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{
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json.addProperty("tag", value.tag_name.toString());
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}
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@Override
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public TagEmptyCondition read(JsonObject json)
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{
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return new TagEmptyCondition(new ResourceLocation(JSONUtils.getString(json, "tag")));
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}
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@Override
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public ResourceLocation getID()
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{
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return TagEmptyCondition.NAME;
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}
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}
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}
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