41 lines
1.4 KiB
Java
41 lines
1.4 KiB
Java
package net.minecraft.world.level.newbiome.area;
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import net.minecraft.world.level.ChunkPos;
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import it.unimi.dsi.fastutil.longs.Long2IntLinkedOpenHashMap;
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import net.minecraft.world.level.newbiome.layer.traits.PixelTransformer;
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public final class LazyArea implements Area {
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private final PixelTransformer transformer;
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private final Long2IntLinkedOpenHashMap cache;
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private final int maxCache;
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public LazyArea(final Long2IntLinkedOpenHashMap long2IntLinkedOpenHashMap, final int integer, final PixelTransformer cqf) {
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this.cache = long2IntLinkedOpenHashMap;
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this.maxCache = integer;
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this.transformer = cqf;
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}
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@Override
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public int get(final int integer1, final int integer2) {
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final long long4 = ChunkPos.asLong(integer1, integer2);
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synchronized (this.cache) {
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final int integer3 = this.cache.get(long4);
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if (integer3 != Integer.MIN_VALUE) {
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return integer3;
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}
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final int integer4 = this.transformer.apply(integer1, integer2);
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this.cache.put(long4, integer4);
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if (this.cache.size() > this.maxCache) {
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for (int integer5 = 0; integer5 < this.maxCache / 16; ++integer5) {
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this.cache.removeFirstInt();
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}
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}
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return integer4;
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}
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}
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public int getMaxCache() {
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return this.maxCache;
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}
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}
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