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Add section empty methods
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@ -51,6 +51,7 @@ public class NewMapChunkCache implements MapChunkCache {
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private ChunkSnapshot[] snaparray; /* Index = (x-x_min) + ((z-z_min)*x_dim) */
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private byte[][] swampcnt;
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private BiomeMap[][] biomemap;
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private boolean[][] isSectionNotEmpty; /* Indexed by snapshot index, then by section index */
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private int chunks_read; /* Number of chunks actually loaded */
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private int chunks_attempted; /* Number of chunks attempted to load */
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@ -118,6 +119,8 @@ public class NewMapChunkCache implements MapChunkCache {
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return snap.getBlockEmittedLight(bx, y, bz);
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}
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private void biomePrep() {
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if(swampcnt != null)
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return;
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int x_size = x_dim << 4;
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int z_size = (z_max - z_min + 1) << 4;
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swampcnt = new byte[x_size][];
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@ -351,6 +354,12 @@ public class NewMapChunkCache implements MapChunkCache {
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public long getBlockKey() {
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return (((chunkindex * worldheight) + y) << 8) | (bx << 4) | bz;
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}
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@Override
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public final boolean isEmptySection() {
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if(isSectionNotEmpty[chunkindex] == null)
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initSectionData(chunkindex);
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return !isSectionNotEmpty[chunkindex][y >> 4];
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}
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}
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private class OurEndMapIterator extends OurMapIterator {
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@ -571,6 +580,7 @@ public class NewMapChunkCache implements MapChunkCache {
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}
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snaparray = new ChunkSnapshot[x_dim * (z_max-z_min+1)];
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isSectionNotEmpty = new boolean[x_dim * (z_max-z_min+1)][];
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}
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private ChunkSnapshot checkSpoutData(Chunk c, ChunkSnapshot ss) {
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@ -783,6 +793,30 @@ public class NewMapChunkCache implements MapChunkCache {
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ChunkSnapshot ss = snaparray[((x>>4) - x_min) + ((z>>4) - z_min) * x_dim];
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return ss.getRawBiomeRainfall(x & 0xF, z & 0xF);
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}
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private void initSectionData(int idx) {
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isSectionNotEmpty[idx] = new boolean[w.getMaxHeight() >> 16];
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int maxy = 0;
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if(snaparray[idx] != EMPTY) {
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/* Get max height */
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for(int i = 0; i < 16; i++) {
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for(int j = 0; j < 16; j++) {
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maxy = Math.max(maxy, snaparray[idx].getHighestBlockYAt(i, j));
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}
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}
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for(int i = 0; i < isSectionNotEmpty[idx].length; i++) {
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if((i << 4) < maxy) { /* Below top? */
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isSectionNotEmpty[idx][i] = true;
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}
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}
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}
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}
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public boolean isEmptySection(int x, int y, int z) {
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int idx = ((x>>4) - x_min) + ((z>>4) - z_min) * x_dim;
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if(isSectionNotEmpty[idx] == null) {
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initSectionData(idx);
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}
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return isSectionNotEmpty[idx][y >> 4];
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}
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/**
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* Get cache iterator
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