89 lines
3.3 KiB
Java
89 lines
3.3 KiB
Java
/*
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* Decompiled with CFR 0.152.
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*
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* Could not load the following classes:
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* org.jspecify.annotations.Nullable
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*/
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package net.minecraft.world.item.crafting;
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import java.lang.ref.WeakReference;
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import java.util.Arrays;
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import java.util.Optional;
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import net.minecraft.core.NonNullList;
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import net.minecraft.server.level.ServerLevel;
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import net.minecraft.world.item.ItemStack;
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import net.minecraft.world.item.crafting.CraftingInput;
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import net.minecraft.world.item.crafting.CraftingRecipe;
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import net.minecraft.world.item.crafting.RecipeHolder;
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import net.minecraft.world.item.crafting.RecipeManager;
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import net.minecraft.world.item.crafting.RecipeType;
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import org.jspecify.annotations.Nullable;
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public class RecipeCache {
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private final @Nullable Entry[] entries;
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private WeakReference<@Nullable RecipeManager> cachedRecipeManager = new WeakReference<Object>(null);
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public RecipeCache(int capacity) {
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this.entries = new Entry[capacity];
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}
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public Optional<RecipeHolder<CraftingRecipe>> get(ServerLevel level, CraftingInput input) {
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if (input.isEmpty()) {
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return Optional.empty();
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}
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this.validateRecipeManager(level);
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for (int i = 0; i < this.entries.length; ++i) {
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Entry entry = this.entries[i];
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if (entry == null || !entry.matches(input)) continue;
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this.moveEntryToFront(i);
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return Optional.ofNullable(entry.value());
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}
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return this.compute(input, level);
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}
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private void validateRecipeManager(ServerLevel level) {
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RecipeManager recipeManager = level.recipeAccess();
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if (recipeManager != this.cachedRecipeManager.get()) {
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this.cachedRecipeManager = new WeakReference<RecipeManager>(recipeManager);
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Arrays.fill(this.entries, null);
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}
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}
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private Optional<RecipeHolder<CraftingRecipe>> compute(CraftingInput input, ServerLevel level) {
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Optional<RecipeHolder<CraftingRecipe>> recipe = level.recipeAccess().getRecipeFor(RecipeType.CRAFTING, input, level);
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this.insert(input, recipe.orElse(null));
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return recipe;
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}
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private void moveEntryToFront(int index) {
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if (index > 0) {
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Entry entry = this.entries[index];
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System.arraycopy(this.entries, 0, this.entries, 1, index);
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this.entries[0] = entry;
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}
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}
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private void insert(CraftingInput input, @Nullable RecipeHolder<CraftingRecipe> recipe) {
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NonNullList<ItemStack> key = NonNullList.withSize(input.size(), ItemStack.EMPTY);
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for (int i = 0; i < input.size(); ++i) {
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key.set(i, input.getItem(i).copyWithCount(1));
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}
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System.arraycopy(this.entries, 0, this.entries, 1, this.entries.length - 1);
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this.entries[0] = new Entry(key, input.width(), input.height(), recipe);
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}
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private record Entry(NonNullList<ItemStack> key, int width, int height, @Nullable RecipeHolder<CraftingRecipe> value) {
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public boolean matches(CraftingInput input) {
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if (this.width != input.width() || this.height != input.height()) {
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return false;
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}
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for (int i = 0; i < this.key.size(); ++i) {
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if (ItemStack.isSameItemSameComponents(this.key.get(i), input.getItem(i))) continue;
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return false;
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}
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return true;
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}
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}
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}
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