minecraft-src/net/minecraft/world/level/block/entity/FuelValues.java

package net.minecraft.world.level.block.entity;

import it.unimi.dsi.fastutil.objects.Object2IntLinkedOpenHashMap;
import it.unimi.dsi.fastutil.objects.Object2IntSortedMap;
import java.util.Collections;
import java.util.SequencedSet;
import net.minecraft.core.Holder;
import net.minecraft.core.HolderLookup;
import net.minecraft.core.registries.Registries;
import net.minecraft.tags.ItemTags;
import net.minecraft.tags.TagKey;
import net.minecraft.world.flag.FeatureFlagSet;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.ItemLike;
import net.minecraft.world.level.block.Blocks;

public class FuelValues {
	private final Object2IntSortedMap<Item> values;

	FuelValues(Object2IntSortedMap<Item> object2IntSortedMap) {
		this.values = object2IntSortedMap;
	}

	public boolean isFuel(ItemStack itemStack) {
		return this.values.containsKey(itemStack.getItem());
	}

	public SequencedSet<Item> fuelItems() {
		return Collections.unmodifiableSequencedSet(this.values.keySet());
	}

	public int burnDuration(ItemStack itemStack) {
		return itemStack.isEmpty() ? 0 : this.values.getInt(itemStack.getItem());
	}

	public static FuelValues vanillaBurnTimes(HolderLookup.Provider provider, FeatureFlagSet featureFlagSet) {
		return vanillaBurnTimes(provider, featureFlagSet, 200);
	}

	public static FuelValues vanillaBurnTimes(HolderLookup.Provider provider, FeatureFlagSet featureFlagSet, int i) {
		return new FuelValues.Builder(provider, featureFlagSet)
			.add(Items.LAVA_BUCKET, i * 100)
			.add(Blocks.COAL_BLOCK, i * 8 * 10)
			.add(Items.BLAZE_ROD, i * 12)
			.add(Items.COAL, i * 8)
			.add(Items.CHARCOAL, i * 8)
			.add(ItemTags.LOGS, i * 3 / 2)
			.add(ItemTags.BAMBOO_BLOCKS, i * 3 / 2)
			.add(ItemTags.PLANKS, i * 3 / 2)
			.add(Blocks.BAMBOO_MOSAIC, i * 3 / 2)
			.add(ItemTags.WOODEN_STAIRS, i * 3 / 2)
			.add(Blocks.BAMBOO_MOSAIC_STAIRS, i * 3 / 2)
			.add(ItemTags.WOODEN_SLABS, i * 3 / 4)
			.add(Blocks.BAMBOO_MOSAIC_SLAB, i * 3 / 4)
			.add(ItemTags.WOODEN_TRAPDOORS, i * 3 / 2)
			.add(ItemTags.WOODEN_PRESSURE_PLATES, i * 3 / 2)
			.add(ItemTags.WOODEN_FENCES, i * 3 / 2)
			.add(ItemTags.FENCE_GATES, i * 3 / 2)
			.add(Blocks.NOTE_BLOCK, i * 3 / 2)
			.add(Blocks.BOOKSHELF, i * 3 / 2)
			.add(Blocks.CHISELED_BOOKSHELF, i * 3 / 2)
			.add(Blocks.LECTERN, i * 3 / 2)
			.add(Blocks.JUKEBOX, i * 3 / 2)
			.add(Blocks.CHEST, i * 3 / 2)
			.add(Blocks.TRAPPED_CHEST, i * 3 / 2)
			.add(Blocks.CRAFTING_TABLE, i * 3 / 2)
			.add(Blocks.DAYLIGHT_DETECTOR, i * 3 / 2)
			.add(ItemTags.BANNERS, i * 3 / 2)
			.add(Items.BOW, i * 3 / 2)
			.add(Items.FISHING_ROD, i * 3 / 2)
			.add(Blocks.LADDER, i * 3 / 2)
			.add(ItemTags.SIGNS, i)
			.add(ItemTags.HANGING_SIGNS, i * 4)
			.add(Items.WOODEN_SHOVEL, i)
			.add(Items.WOODEN_SWORD, i)
			.add(Items.WOODEN_HOE, i)
			.add(Items.WOODEN_AXE, i)
			.add(Items.WOODEN_PICKAXE, i)
			.add(ItemTags.WOODEN_DOORS, i)
			.add(ItemTags.BOATS, i * 6)
			.add(ItemTags.WOOL, i / 2)
			.add(ItemTags.WOODEN_BUTTONS, i / 2)
			.add(Items.STICK, i / 2)
			.add(ItemTags.SAPLINGS, i / 2)
			.add(Items.BOWL, i / 2)
			.add(ItemTags.WOOL_CARPETS, 1 + i / 3)
			.add(Blocks.DRIED_KELP_BLOCK, 1 + i * 20)
			.add(Items.CROSSBOW, i * 3 / 2)
			.add(Blocks.BAMBOO, i / 4)
			.add(Blocks.DEAD_BUSH, i / 2)
			.add(Blocks.SCAFFOLDING, i / 4)
			.add(Blocks.LOOM, i * 3 / 2)
			.add(Blocks.BARREL, i * 3 / 2)
			.add(Blocks.CARTOGRAPHY_TABLE, i * 3 / 2)
			.add(Blocks.FLETCHING_TABLE, i * 3 / 2)
			.add(Blocks.SMITHING_TABLE, i * 3 / 2)
			.add(Blocks.COMPOSTER, i * 3 / 2)
			.add(Blocks.AZALEA, i / 2)
			.add(Blocks.FLOWERING_AZALEA, i / 2)
			.add(Blocks.MANGROVE_ROOTS, i * 3 / 2)
			.remove(ItemTags.NON_FLAMMABLE_WOOD)
			.build();
	}

	public static class Builder {
		private final HolderLookup<Item> items;
		private final FeatureFlagSet enabledFeatures;
		private final Object2IntSortedMap<Item> values = new Object2IntLinkedOpenHashMap<>();

		public Builder(HolderLookup.Provider provider, FeatureFlagSet featureFlagSet) {
			this.items = provider.lookupOrThrow(Registries.ITEM);
			this.enabledFeatures = featureFlagSet;
		}

		public FuelValues build() {
			return new FuelValues(this.values);
		}

		public FuelValues.Builder remove(TagKey<Item> tagKey) {
			this.values.keySet().removeIf(item -> item.builtInRegistryHolder().is(tagKey));
			return this;
		}

		public FuelValues.Builder add(TagKey<Item> tagKey, int i) {
			this.items.get(tagKey).ifPresent(named -> {
				for (Holder<Item> holder : named) {
					this.putInternal(i, holder.value());
				}
			});
			return this;
		}

		public FuelValues.Builder add(ItemLike itemLike, int i) {
			Item item = itemLike.asItem();
			this.putInternal(i, item);
			return this;
		}

		private void putInternal(int i, Item item) {
			if (item.isEnabled(this.enabledFeatures)) {
				this.values.put(item, i);
			}
		}
	}
}