74 lines
1.8 KiB
Java
74 lines
1.8 KiB
Java
package net.minecraft.server.level;
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import net.minecraft.world.level.ChunkPos;
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import net.minecraft.world.level.lighting.DynamicGraphMinFixedPoint;
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public abstract class ChunkTracker extends DynamicGraphMinFixedPoint {
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protected ChunkTracker(int firstQueuedLevel, int width, int height) {
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super(firstQueuedLevel, width, height);
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}
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@Override
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protected boolean isSource(long pos) {
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return pos == ChunkPos.INVALID_CHUNK_POS;
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}
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@Override
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protected void checkNeighborsAfterUpdate(long pos, int level, boolean isDecreasing) {
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if (!isDecreasing || level < this.levelCount - 2) {
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ChunkPos chunkPos = new ChunkPos(pos);
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int i = chunkPos.x;
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int j = chunkPos.z;
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for (int k = -1; k <= 1; k++) {
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for (int l = -1; l <= 1; l++) {
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long m = ChunkPos.asLong(i + k, j + l);
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if (m != pos) {
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this.checkNeighbor(pos, m, level, isDecreasing);
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}
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}
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}
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}
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}
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@Override
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protected int getComputedLevel(long pos, long excludedSourcePos, int level) {
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int i = level;
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ChunkPos chunkPos = new ChunkPos(pos);
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int j = chunkPos.x;
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int k = chunkPos.z;
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for (int l = -1; l <= 1; l++) {
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for (int m = -1; m <= 1; m++) {
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long n = ChunkPos.asLong(j + l, k + m);
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if (n == pos) {
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n = ChunkPos.INVALID_CHUNK_POS;
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}
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if (n != excludedSourcePos) {
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int o = this.computeLevelFromNeighbor(n, pos, this.getLevel(n));
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if (i > o) {
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i = o;
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}
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if (i == 0) {
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return i;
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}
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}
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}
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}
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return i;
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}
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@Override
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protected int computeLevelFromNeighbor(long startPos, long endPos, int startLevel) {
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return startPos == ChunkPos.INVALID_CHUNK_POS ? this.getLevelFromSource(endPos) : startLevel + 1;
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}
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protected abstract int getLevelFromSource(long pos);
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public void update(long pos, int level, boolean isDecreasing) {
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this.checkEdge(ChunkPos.INVALID_CHUNK_POS, pos, level, isDecreasing);
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}
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}
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