46 lines
1.5 KiB
Java
46 lines
1.5 KiB
Java
package net.minecraft.client.renderer.chunk;
|
|
|
|
import it.unimi.dsi.fastutil.longs.Long2ObjectFunction;
|
|
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
|
|
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
|
|
import net.fabricmc.api.EnvType;
|
|
import net.fabricmc.api.Environment;
|
|
import net.minecraft.core.SectionPos;
|
|
import net.minecraft.world.level.Level;
|
|
import net.minecraft.world.level.chunk.LevelChunk;
|
|
|
|
@Environment(EnvType.CLIENT)
|
|
public class RenderRegionCache {
|
|
private final Long2ObjectMap<SectionCopy> sectionCopyCache = new Long2ObjectOpenHashMap<>();
|
|
|
|
public RenderSectionRegion createRegion(Level level, long chunkPos) {
|
|
int i = SectionPos.x(chunkPos);
|
|
int j = SectionPos.y(chunkPos);
|
|
int k = SectionPos.z(chunkPos);
|
|
int l = i - 1;
|
|
int m = j - 1;
|
|
int n = k - 1;
|
|
int o = i + 1;
|
|
int p = j + 1;
|
|
int q = k + 1;
|
|
SectionCopy[] sectionCopys = new SectionCopy[27];
|
|
|
|
for (int r = n; r <= q; r++) {
|
|
for (int s = m; s <= p; s++) {
|
|
for (int t = l; t <= o; t++) {
|
|
int u = RenderSectionRegion.index(l, m, n, t, s, r);
|
|
sectionCopys[u] = this.getSectionDataCopy(level, t, s, r);
|
|
}
|
|
}
|
|
}
|
|
|
|
return new RenderSectionRegion(level, l, m, n, sectionCopys);
|
|
}
|
|
|
|
private SectionCopy getSectionDataCopy(Level level, int x, int y, int z) {
|
|
return this.sectionCopyCache.computeIfAbsent(SectionPos.asLong(x, y, z), (Long2ObjectFunction<? extends SectionCopy>)(l -> {
|
|
LevelChunk levelChunk = level.getChunk(x, z);
|
|
return new SectionCopy(levelChunk, levelChunk.getSectionIndexFromSectionY(y));
|
|
}));
|
|
}
|
|
}
|