39 lines
1.1 KiB
Java
39 lines
1.1 KiB
Java
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package net.minecraft.world.level.chunk.storage;
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import com.google.common.annotations.VisibleForTesting;
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import it.unimi.dsi.fastutil.ints.IntArraySet;
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import it.unimi.dsi.fastutil.ints.IntCollection;
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import it.unimi.dsi.fastutil.ints.IntSet;
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import java.util.BitSet;
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public class RegionBitmap {
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private final BitSet used = new BitSet();
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public void force(int p_63613_, int p_63614_) {
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this.used.set(p_63613_, p_63613_ + p_63614_);
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}
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public void free(int p_63616_, int p_63617_) {
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this.used.clear(p_63616_, p_63616_ + p_63617_);
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}
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public int allocate(int p_63611_) {
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int i = 0;
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while (true) {
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int j = this.used.nextClearBit(i);
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int k = this.used.nextSetBit(j);
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if (k == -1 || k - j >= p_63611_) {
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this.force(j, p_63611_);
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return j;
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}
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i = k;
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}
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}
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@VisibleForTesting
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public IntSet getUsed() {
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return this.used.stream().collect(IntArraySet::new, IntCollection::add, IntCollection::addAll);
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}
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}
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