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Fix indexing and custom world heights in HeightmapProcessor

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This commit is contained in:
SirYwell 2021-09-11 09:24:35 +02:00
parent f29d68b16e
commit 5fb4434afe
1 changed files with 14 additions and 7 deletions
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21
worldedit-core/src/main/java/com/fastasyncworldedit/core/extent/processor/HeightmapProcessor.java
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@ -11,6 +11,7 @@ import com.sk89q.worldedit.world.block.BlockState;
import com.sk89q.worldedit.world.block.BlockTypesCache; import com.sk89q.worldedit.world.block.BlockTypesCache;
import javax.annotation.Nullable; import javax.annotation.Nullable;
import java.lang.reflect.Array;
import java.util.Arrays; import java.util.Arrays;
import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Future; import java.util.concurrent.Future;
@ -18,7 +19,9 @@ import java.util.concurrent.Future;
public class HeightmapProcessor implements IBatchProcessor { public class HeightmapProcessor implements IBatchProcessor {
private static final HeightMapType[] TYPES = HeightMapType.values(); private static final HeightMapType[] TYPES = HeightMapType.values();
private static final boolean[] COMPLETE = new boolean[256]; private static final int BLOCKS_PER_Y_SHIFT = 8; // log2(256)
private static final int BLOCKS_PER_Y = 256;
private static final boolean[] COMPLETE = new boolean[BLOCKS_PER_Y];
private static final char[] AIR_LAYER = new char[4096]; private static final char[] AIR_LAYER = new char[4096];
static { static {
@ -29,8 +32,8 @@ public class HeightmapProcessor implements IBatchProcessor {
@Override @Override
public IChunkSet processSet(IChunk chunk, IChunkGet get, IChunkSet set) { public IChunkSet processSet(IChunk chunk, IChunkGet get, IChunkSet set) {
// each heightmap gets one 16*16 array // each heightmap gets one 16*16 array
int[][] heightmaps = new int[TYPES.length][256]; int[][] heightmaps = new int[TYPES.length][BLOCKS_PER_Y];
boolean[][] updated = new boolean[TYPES.length][256]; boolean[][] updated = new boolean[TYPES.length][BLOCKS_PER_Y];
int skip = 0; int skip = 0;
int allSkipped = (1 << TYPES.length) - 1; // lowest types.length bits are set int allSkipped = (1 << TYPES.length) - 1; // lowest types.length bits are set
layer: layer:
@ -50,10 +53,10 @@ public class HeightmapProcessor implements IBatchProcessor {
char[] getSection = null; char[] getSection = null;
for (int y = 15; y >= 0; y--) { for (int y = 15; y >= 0; y--) {
// We don't need to actually iterate over x and z as we're both reading and writing an index // We don't need to actually iterate over x and z as we're both reading and writing an index
for (int j = 0; j < 256; j++) { for (int j = 0; j < BLOCKS_PER_Y; j++) {
char ordinal = 0; char ordinal = 0;
if (hasSectionSet) { if (hasSectionSet) {
ordinal = setSection[y * j]; ordinal = setSection[index(y, j)];
} }
if (ordinal == 0) { if (ordinal == 0) {
if (!hasSectionGet) { if (!hasSectionGet) {
@ -73,7 +76,7 @@ public class HeightmapProcessor implements IBatchProcessor {
continue; continue;
} }
} }
ordinal = getSection[y * j]; ordinal = getSection[index(y, j)];
} }
// fast skip if block isn't relevant for any height map (air or empty) // fast skip if block isn't relevant for any height map (air or empty)
if (ordinal < 4) { if (ordinal < 4) {
@ -91,7 +94,7 @@ public class HeightmapProcessor implements IBatchProcessor {
// ignore if that position was already set // ignore if that position was already set
if (!updated[i][j] && type.includes(block)) { if (!updated[i][j] && type.includes(block)) {
// mc requires + 1, heightmaps are normalized internally // mc requires + 1, heightmaps are normalized internally
heightmaps[i][j] = (layer << 4) + y + 1; heightmaps[i][j] = ((layer - set.getMinSectionIndex()) << 4) + y + 1;
updated[i][j] = true; // mark as updated updated[i][j] = true; // mark as updated
} }
} }
@ -114,6 +117,10 @@ public class HeightmapProcessor implements IBatchProcessor {
return set; return set;
} }
private static int index(int y, int offset) {
return (y << BLOCKS_PER_Y_SHIFT) + offset;
}
@Override @Override
public Future<IChunkSet> postProcessSet(IChunk chunk, IChunkGet get, IChunkSet set) { public Future<IChunkSet> postProcessSet(IChunk chunk, IChunkGet get, IChunkSet set) {
return CompletableFuture.completedFuture(set); return CompletableFuture.completedFuture(set);