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GLM: `add_table`. Biome modifiers: `add_carvers`, `remove_carvers`, `add_spawn_costs`, `remove_spawn_costs`. Structure modifiers: `add_spawns`, `remove_spawns`, `clear_spawns`
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src/main/java/net/neoforged/neoforge/common/loot/AddTableLootModifier.java
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| /* | ||
| * Copyright (c) NeoForged and contributors | ||
| * SPDX-License-Identifier: LGPL-2.1-only | ||
| */ | ||
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| package net.neoforged.neoforge.common.loot; | ||
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| import com.mojang.serialization.Codec; | ||
| import com.mojang.serialization.codecs.RecordCodecBuilder; | ||
| import it.unimi.dsi.fastutil.objects.ObjectArrayList; | ||
| import net.minecraft.resources.ResourceLocation; | ||
| import net.minecraft.world.item.ItemStack; | ||
| import net.minecraft.world.level.storage.loot.LootContext; | ||
| import net.minecraft.world.level.storage.loot.LootTable; | ||
| import net.minecraft.world.level.storage.loot.predicates.LootItemCondition; | ||
| import net.neoforged.neoforge.common.NeoForgeMod; | ||
| import org.jetbrains.annotations.ApiStatus; | ||
| import org.jetbrains.annotations.NotNull; | ||
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| /** | ||
| * <p>Loot modifier that rolls one loot table (the "subtable" and adds the results to the loot being modified (the "target table"). | ||
| * Loot modifiers are not rolled for the subtable, as that could result in the subtables' | ||
| * items being modified twice (by downstream loot modifiers modifying the target table).</p> | ||
| * | ||
| * <p> Json format: | ||
| * | ||
| * <pre> | ||
| * { | ||
| * "type": "neoforge:add_table", | ||
| * "conditions": [], // conditions block to predicate target tables by | ||
| * "table": "namespace:loot_table_id" // subtable to roll loot for to add to the target table(s) | ||
| * } | ||
| * </pre> | ||
| * | ||
| * </p> | ||
| */ | ||
| public class AddTableLootModifier extends LootModifier { | ||
| /** | ||
| * @see NeoForgeMod#ADD_TABLE_LOOT_MODIFIER_TYPE | ||
| */ | ||
| @ApiStatus.Internal | ||
| public static final Codec<AddTableLootModifier> CODEC = RecordCodecBuilder.create(instance -> instance.group( | ||
| IGlobalLootModifier.LOOT_CONDITIONS_CODEC.fieldOf("conditions").forGetter(glm -> glm.conditions), | ||
| ResourceLocation.CODEC.fieldOf("table").forGetter(AddTableLootModifier::table)).apply(instance, AddTableLootModifier::new)); | ||
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| private final ResourceLocation table; | ||
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| protected AddTableLootModifier(LootItemCondition[] conditionsIn, ResourceLocation table) { | ||
| super(conditionsIn); | ||
| this.table = table; | ||
| } | ||
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| public ResourceLocation table() { | ||
| return this.table; | ||
| } | ||
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| @SuppressWarnings("deprecation") | ||
| @Override | ||
| protected @NotNull ObjectArrayList<ItemStack> doApply(ObjectArrayList<ItemStack> generatedLoot, LootContext context) { | ||
| LootTable extraTable = context.getResolver().getLootTable(this.table); | ||
| // Don't run loot modifiers for subtables; | ||
| // the added loot will be modifiable by downstream loot modifiers modifying the target table, | ||
| // so if we modify it here then it could get modified twice. | ||
| extraTable.getRandomItemsRaw(context, LootTable.createStackSplitter(context.getLevel(), generatedLoot::add)); | ||
| return generatedLoot; | ||
| } | ||
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| @Override | ||
| public Codec<? extends IGlobalLootModifier> codec() { | ||
| return NeoForgeMod.ADD_TABLE_LOOT_MODIFIER_TYPE.get(); | ||
| } | ||
| } |
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