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-rw-r--r--nms-patches/PlayerChunkMap.patch208
1 files changed, 208 insertions, 0 deletions
diff --git a/nms-patches/PlayerChunkMap.patch b/nms-patches/PlayerChunkMap.patch
new file mode 100644
index 00000000..48b86df8
--- /dev/null
+++ b/nms-patches/PlayerChunkMap.patch
@@ -0,0 +1,208 @@
+--- ../work/decompile-bb26c12b/net/minecraft/server/PlayerChunkMap.java 2014-11-27 08:59:46.849421195 +1100
++++ src/main/java/net/minecraft/server/PlayerChunkMap.java 2014-11-27 08:42:10.152850911 +1100
+@@ -7,17 +7,24 @@
+ import org.apache.logging.log4j.LogManager;
+ import org.apache.logging.log4j.Logger;
+
++// CraftBukkit start
++import java.util.Collections;
++import java.util.Queue;
++import java.util.LinkedList;
++// CraftBukkit end
++
+ public class PlayerChunkMap {
+
+ private static final Logger a = LogManager.getLogger();
+ private final WorldServer world;
+ private final List managedPlayers = Lists.newArrayList();
+ private final LongHashMap d = new LongHashMap();
+- private final List e = Lists.newArrayList();
+- private final List f = Lists.newArrayList();
++ private final Queue e = new java.util.concurrent.ConcurrentLinkedQueue(); // CraftBukkit ArrayList -> ConcurrentLinkedQueue
++ private final Queue f = new java.util.concurrent.ConcurrentLinkedQueue(); // CraftBukkit ArrayList -> ConcurrentLinkedQueue
+ private int g;
+ private long h;
+ private final int[][] i = new int[][] { { 1, 0}, { 0, 1}, { -1, 0}, { 0, -1}};
++ private boolean wasNotEmpty; // CraftBukkit - add field
+
+ public PlayerChunkMap(WorldServer worldserver) {
+ this.world = worldserver;
+@@ -35,28 +42,39 @@
+
+ if (i - this.h > 8000L) {
+ this.h = i;
+-
+- for (j = 0; j < this.f.size(); ++j) {
+- playerchunk = (PlayerChunk) this.f.get(j);
++
++ // CraftBukkit start - Use iterator
++ java.util.Iterator iterator = this.f.iterator();
++ while (iterator.hasNext()) {
++ playerchunk = (PlayerChunk) iterator.next();
+ playerchunk.b();
+ playerchunk.a();
+ }
+ } else {
+- for (j = 0; j < this.e.size(); ++j) {
+- playerchunk = (PlayerChunk) this.e.get(j);
++ java.util.Iterator iterator = this.e.iterator();
++
++ while (iterator.hasNext()) {
++ playerchunk = (PlayerChunk) iterator.next();
+ playerchunk.b();
++ iterator.remove();
++ // CraftBukkit end
+ }
+ }
+
+- this.e.clear();
++ // this.e.clear(); // CraftBukkit - Removals are already covered
+ if (this.managedPlayers.isEmpty()) {
++ if (!wasNotEmpty) return; // CraftBukkit - Only do unload when we go from non-empty to empty
+ WorldProvider worldprovider = this.world.worldProvider;
+
+ if (!worldprovider.e()) {
+ this.world.chunkProviderServer.b();
+ }
++ // CraftBukkit start
++ wasNotEmpty = false;
++ } else {
++ wasNotEmpty = true;
+ }
+-
++ // CraftBukkit end
+ }
+
+ public boolean a(int i, int j) {
+@@ -77,6 +95,16 @@
+
+ return playerchunk;
+ }
++
++ // CraftBukkit start - add method
++ public final boolean isChunkInUse(int x, int z) {
++ PlayerChunk pi = a(x, z, false);
++ if (pi != null) {
++ return (PlayerChunk.b(pi).size() > 0);
++ }
++ return false;
++ }
++ // CraftBukkit end
+
+ public void flagDirty(BlockPosition blockposition) {
+ int i = blockposition.getX() >> 4;
+@@ -95,13 +123,22 @@
+
+ entityplayer.d = entityplayer.locX;
+ entityplayer.e = entityplayer.locZ;
++
++ // CraftBukkit start - Load nearby chunks first
++ List<ChunkCoordIntPair> chunkList = new LinkedList<ChunkCoordIntPair>();
+
+ for (int k = i - this.g; k <= i + this.g; ++k) {
+ for (int l = j - this.g; l <= j + this.g; ++l) {
+- this.a(k, l, true).a(entityplayer);
++ chunkList.add(new ChunkCoordIntPair(k, l));
+ }
+ }
+-
++
++ Collections.sort(chunkList, new ChunkCoordComparator(entityplayer));
++ for (ChunkCoordIntPair pair : chunkList) {
++ this.a(pair.x, pair.z, true).a(entityplayer);
++ }
++ // CraftBukkit end
++
+ this.managedPlayers.add(entityplayer);
+ this.b(entityplayer);
+ }
+@@ -188,12 +225,13 @@
+ int i1 = this.g;
+ int j1 = i - k;
+ int k1 = j - l;
++ List<ChunkCoordIntPair> chunksToLoad = new LinkedList<ChunkCoordIntPair>(); // CraftBukkit
+
+ if (j1 != 0 || k1 != 0) {
+ for (int l1 = i - i1; l1 <= i + i1; ++l1) {
+ for (int i2 = j - i1; i2 <= j + i1; ++i2) {
+ if (!this.a(l1, i2, k, l, i1)) {
+- this.a(l1, i2, true).a(entityplayer);
++ chunksToLoad.add(new ChunkCoordIntPair(l1, i2)); // CraftBukkit
+ }
+
+ if (!this.a(l1 - j1, i2 - k1, i, j, i1)) {
+@@ -209,6 +247,17 @@
+ this.b(entityplayer);
+ entityplayer.d = entityplayer.locX;
+ entityplayer.e = entityplayer.locZ;
++
++ // CraftBukkit start - send nearest chunks first
++ Collections.sort(chunksToLoad, new ChunkCoordComparator(entityplayer));
++ for (ChunkCoordIntPair pair : chunksToLoad) {
++ this.a(pair.x, pair.z, true).a(entityplayer);
++ }
++
++ if (j1 > 1 || j1 < -1 || k1 > 1 || k1 < -1) {
++ Collections.sort(entityplayer.chunkCoordIntPairQueue, new ChunkCoordComparator(entityplayer));
++ }
++ // CraftBukkit end
+ }
+ }
+ }
+@@ -274,11 +323,54 @@
+ return playerchunkmap.d;
+ }
+
+- static List c(PlayerChunkMap playerchunkmap) {
++ static Queue c(PlayerChunkMap playerchunkmap) { // CraftBukkit List -> Queue
+ return playerchunkmap.f;
+ }
+
+- static List d(PlayerChunkMap playerchunkmap) {
++ static Queue d(PlayerChunkMap playerchunkmap) { // CraftBukkit List -> Queue
+ return playerchunkmap.e;
+ }
++
++ // CraftBukkit start - Sorter to load nearby chunks first
++ private static class ChunkCoordComparator implements java.util.Comparator<ChunkCoordIntPair> {
++ private int x;
++ private int z;
++
++ public ChunkCoordComparator (EntityPlayer entityplayer) {
++ x = (int) entityplayer.locX >> 4;
++ z = (int) entityplayer.locZ >> 4;
++ }
++
++ public int compare(ChunkCoordIntPair a, ChunkCoordIntPair b) {
++ if (a.equals(b)) {
++ return 0;
++ }
++
++ // Subtract current position to set center point
++ int ax = a.x - this.x;
++ int az = a.z - this.z;
++ int bx = b.x - this.x;
++ int bz = b.z - this.z;
++
++ int result = ((ax - bx) * (ax + bx)) + ((az - bz) * (az + bz));
++ if (result != 0) {
++ return result;
++ }
++
++ if (ax < 0) {
++ if (bx < 0) {
++ return bz - az;
++ } else {
++ return -1;
++ }
++ } else {
++ if (bx < 0) {
++ return 1;
++ } else {
++ return az - bz;
++ }
++ }
++ }
++ }
++ // CraftBukkit end
+ }