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optimize setBlockState

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* Lithium: combined heightmap update

---------

Co-authored-by: hayanesuru <hayanesuru@outlook.jp>
This commit is contained in:
Taiyou
2025-08-16 18:20:53 +02:00
committed by GitHub
parent fad6c18ca1
commit 1d73e1e10f
2 changed files with 198 additions and 0 deletions
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138
leaf-server/src/main/java/net/caffeinemc/mods/lithium/common/world/chunk/heightmap/CombinedHeightmapUpdate.java Normal file
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package net.caffeinemc.mods.lithium.common.world.chunk.heightmap;
import net.minecraft.core.BlockPos;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.chunk.LevelChunk;
import net.minecraft.world.level.levelgen.Heightmap;
import java.util.Objects;
import java.util.function.Predicate;
public final class CombinedHeightmapUpdate {
public static void updateHeightmaps(Heightmap heightmap0, Heightmap heightmap1, Heightmap heightmap2, Heightmap heightmap3, LevelChunk worldChunk, final int x, final int y, final int z, BlockState state) {
final int height0 = heightmap0.getFirstAvailable(x, z);
final int height1 = heightmap1.getFirstAvailable(x, z);
final int height2 = heightmap2.getFirstAvailable(x, z);
final int height3 = heightmap3.getFirstAvailable(x, z);
int heightmapsToUpdate = 4;
if (y + 2 <= height0) {
heightmap0 = null;
heightmapsToUpdate--;
}
if (y + 2 <= height1) {
heightmap1 = null;
heightmapsToUpdate--;
}
if (y + 2 <= height2) {
heightmap2 = null;
heightmapsToUpdate--;
}
if (y + 2 <= height3) {
heightmap3 = null;
heightmapsToUpdate--;
}
if (heightmapsToUpdate == 0) {
return;
}
Predicate<BlockState> blockPredicate0 = heightmap0 == null ? null : Objects.requireNonNull(heightmap0.isOpaque());
Predicate<BlockState> blockPredicate1 = heightmap1 == null ? null : Objects.requireNonNull(heightmap1.isOpaque());
Predicate<BlockState> blockPredicate2 = heightmap2 == null ? null : Objects.requireNonNull(heightmap2.isOpaque());
Predicate<BlockState> blockPredicate3 = heightmap3 == null ? null : Objects.requireNonNull(heightmap3.isOpaque());
if (heightmap0 != null) {
if (blockPredicate0.test(state)) {
if (y >= height0) {
heightmap0.setHeight(x, z, y + 1);
}
heightmap0 = null;
heightmapsToUpdate--;
} else if (height0 != y + 1) {
heightmap0 = null;
heightmapsToUpdate--;
}
}
if (heightmap1 != null) {
if (blockPredicate1.test(state)) {
if (y >= height1) {
heightmap1.setHeight(x, z, y + 1);
}
heightmap1 = null;
heightmapsToUpdate--;
} else if (height1 != y + 1) {
heightmap1 = null;
heightmapsToUpdate--;
}
}
if (heightmap2 != null) {
if (blockPredicate2.test(state)) {
if (y >= height2) {
heightmap2.setHeight(x, z, y + 1);
}
heightmap2 = null;
heightmapsToUpdate--;
} else if (height2 != y + 1) {
heightmap2 = null;
heightmapsToUpdate--;
}
}
if (heightmap3 != null) {
if (blockPredicate3.test(state)) {
if (y >= height3) {
heightmap3.setHeight(x, z, y + 1);
}
heightmap3 = null;
heightmapsToUpdate--;
} else if (height3 != y + 1) {
heightmap3 = null;
heightmapsToUpdate--;
}
}
if (heightmapsToUpdate == 0) {
return;
}
BlockPos.MutableBlockPos mutable = new BlockPos.MutableBlockPos();
int bottomY = worldChunk.getMinY();
for (int searchY = y - 1; searchY >= bottomY && heightmapsToUpdate > 0; --searchY) {
mutable.set(x, searchY, z);
BlockState blockState = worldChunk.getBlockState(mutable);
if (heightmap0 != null && blockPredicate0.test(blockState)) {
heightmap0.setHeight(x, z, searchY + 1);
heightmap0 = null;
heightmapsToUpdate--;
}
if (heightmap1 != null && blockPredicate1.test(blockState)) {
heightmap1.setHeight(x, z, searchY + 1);
heightmap1 = null;
heightmapsToUpdate--;
}
if (heightmap2 != null && blockPredicate2.test(blockState)) {
heightmap2.setHeight(x, z, searchY + 1);
heightmap2 = null;
heightmapsToUpdate--;
}
if (heightmap3 != null && blockPredicate3.test(blockState)) {
heightmap3.setHeight(x, z, searchY + 1);
heightmap3 = null;
heightmapsToUpdate--;
}
}
if (heightmap0 != null) {
heightmap0.setHeight(x, z, bottomY);
}
if (heightmap1 != null) {
heightmap1.setHeight(x, z, bottomY);
}
if (heightmap2 != null) {
heightmap2.setHeight(x, z, bottomY);
}
if (heightmap3 != null) {
heightmap3.setHeight(x, z, bottomY);
}
}
}