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5284bd1a74
Paper/CraftBukkit-Patches/0005-Better-Chunk-Tick-Selection.patch
Thinkofdeath 5284bd1a74 Upstream merge
2014-02-12 14:06:33 +00:00

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From fbc8819e3a23876e68abe0c2d8e225a8d1ea2657 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Tue, 11 Jun 2013 12:56:02 +1000
Subject: [PATCH] Better Chunk Tick Selection
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 5f12d2e..069db6a 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -61,7 +61,7 @@ public abstract class World implements IBlockAccess {
public Scoreboard scoreboard = new Scoreboard(); // CraftBukkit - protected -> public
public boolean isStatic;
// CraftBukkit start - public, longhashset
- protected LongHashSet chunkTickList = new LongHashSet();
+ // protected LongHashSet chunkTickList = new LongHashSet(); // Spigot
private int L;
public boolean allowMonsters;
public boolean allowAnimals;
@@ -76,6 +76,30 @@ public abstract class World implements IBlockAccess {
private boolean N;
int[] I;
+ // Spigot start
+ protected final gnu.trove.map.hash.TLongShortHashMap chunkTickList;
+ protected float growthOdds = 100;
+ protected float modifiedOdds = 100;
+ private final byte chunkTickRadius;
+
+ public static long chunkToKey(int x, int z)
+ {
+ long k = ( ( ( (long) x ) & 0xFFFF0000L ) << 16 ) | ( ( ( (long) x ) & 0x0000FFFFL ) << 0 );
+ k |= ( ( ( (long) z ) & 0xFFFF0000L ) << 32 ) | ( ( ( (long) z ) & 0x0000FFFFL ) << 16 );
+ return k;
+ }
+
+ public static int keyToX(long k)
+ {
+ return (int) ( ( ( k >> 16 ) & 0xFFFF0000 ) | ( k & 0x0000FFFF ) );
+ }
+
+ public static int keyToZ(long k)
+ {
+ return (int) ( ( ( k >> 32 ) & 0xFFFF0000L ) | ( ( k >> 16 ) & 0x0000FFFF ) );
+ }
+ // Spigot end
+
public BiomeBase getBiome(int i, int j) {
if (this.isLoaded(i, 0, j)) {
Chunk chunk = this.getChunkAtWorldCoords(i, j);
@@ -125,6 +149,11 @@ public abstract class World implements IBlockAccess {
this.ticksPerAnimalSpawns = this.getServer().getTicksPerAnimalSpawns(); // CraftBukkit
this.ticksPerMonsterSpawns = this.getServer().getTicksPerMonsterSpawns(); // CraftBukkit
// CraftBukkit end
+ // Spigot start
+ this.chunkTickRadius = (byte) ( ( this.getServer().getViewDistance() < 7 ) ? this.getServer().getViewDistance() : 7 );
+ this.chunkTickList = new gnu.trove.map.hash.TLongShortHashMap( spigotConfig.chunksPerTick * 5, 0.7f, Long.MIN_VALUE, Short.MIN_VALUE );
+ this.chunkTickList.setAutoCompactionFactor( 0 );
+ // Spigot end
this.L = this.random.nextInt(12000);
this.allowMonsters = true;
@@ -1913,24 +1942,44 @@ public abstract class World implements IBlockAccess {
int j;
int k;
+ // Spigot start
+ int optimalChunks = spigotConfig.chunksPerTick;
+ // Quick conditions to allow us to exist early
+ if ( optimalChunks <= 0 || players.isEmpty() )
+ {
+ return;
+ }
+ // Keep chunks with growth inside of the optimal chunk range
+ int chunksPerPlayer = Math.min( 200, Math.max( 1, (int) ( ( ( optimalChunks - players.size() ) / (double) players.size() ) + 0.5 ) ) );
+ int randRange = 3 + chunksPerPlayer / 30;
+ // Limit to normal tick radius - including view distance
+ randRange = ( randRange > chunkTickRadius ) ? chunkTickRadius : randRange;
+ // odds of growth happening vs growth happening in vanilla
+ this.growthOdds = this.modifiedOdds = Math.max( 35, Math.min( 100, ( ( chunksPerPlayer + 1 ) * 100F ) / 15F ) );
+ // Spigot end
for (i = 0; i < this.players.size(); ++i) {
entityhuman = (EntityHuman) this.players.get(i);
j = MathHelper.floor(entityhuman.locX / 16.0D);
k = MathHelper.floor(entityhuman.locZ / 16.0D);
byte b0 = 7;
- for (int l = -b0; l <= b0; ++l) {
- for (int i1 = -b0; i1 <= b0; ++i1) {
- // CraftBukkit start - Don't tick chunks queued for unload
- ChunkProviderServer chunkProviderServer = ((WorldServer) entityhuman.world).chunkProviderServer;
- if (chunkProviderServer.unloadQueue.contains(l + j, i1 + k)) {
- continue;
- }
- // CraftBukkit end
-
- this.chunkTickList.add(org.bukkit.craftbukkit.util.LongHash.toLong(l + j, i1 + k)); // CraftBukkit
+ // Spigot start - Always update the chunk the player is on
+ long key = chunkToKey( j, k );
+ int existingPlayers = Math.max( 0, chunkTickList.get( key ) ); // filter out -1
+ chunkTickList.put(key, (short) (existingPlayers + 1));
+
+ // Check and see if we update the chunks surrounding the player this tick
+ for ( int chunk = 0; chunk < chunksPerPlayer; chunk++ )
+ {
+ int dx = ( random.nextBoolean() ? 1 : -1 ) * random.nextInt( randRange );
+ int dz = ( random.nextBoolean() ? 1 : -1 ) * random.nextInt( randRange );
+ long hash = chunkToKey( dx + j, dz + k );
+ if ( !chunkTickList.contains( hash ) && this.isChunkLoaded( dx + j, dz + k ) )
+ {
+ chunkTickList.put( hash, (short) -1 ); // no players
}
}
+ // Spigot End
}
this.methodProfiler.b();
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index b9b967f..3a8856d 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -306,10 +306,20 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
// CraftBukkit start
// Iterator iterator = this.chunkTickList.iterator();
- for (long chunkCoord : this.chunkTickList.popAll()) {
+ // Spigot start
+ for (gnu.trove.iterator.TLongShortIterator iter = chunkTickList.iterator(); iter.hasNext();) {
+ iter.advance();
+ long chunkCoord = iter.key();
+ int chunkX = World.keyToX(chunkCoord);
+ int chunkZ = World.keyToZ(chunkCoord);
+ // If unloaded, or in procedd of being unloaded, drop it
+ if ( ( !this.isChunkLoaded( chunkX, chunkZ ) ) || ( this.chunkProviderServer.unloadQueue.contains( chunkX, chunkZ ) ) )
+ {
+ iter.remove();
+ continue;
+ }
+ // Spigot end
// ChunkCoordIntPair chunkcoordintpair = (ChunkCoordIntPair) iterator.next();
- int chunkX = LongHash.msw(chunkCoord);
- int chunkZ = LongHash.lsw(chunkCoord);
int k = chunkX * 16;
int l = chunkZ * 16;
@@ -400,6 +410,7 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
if (block.isTicking()) {
++i;
+ this.growthOdds = (iter.value() < 1) ? this.modifiedOdds : 100; // Spigot - grow fast if no players are in this chunk (value = player count)
block.a(this, k2 + k, i3 + chunksection.getYPosition(), l2 + l, this.random);
}
}
@@ -408,6 +419,12 @@ public class WorldServer extends World implements org.bukkit.BlockChangeDelegate
this.methodProfiler.b();
}
+ // Spigot Start
+ if ( spigotConfig.clearChunksOnTick )
+ {
+ chunkTickList.clear();
+ }
+ // Spigot End
}
public boolean a(int i, int j, int k, Block block) {
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 961ddb4..6ba7f5c 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -68,4 +68,15 @@ public class SpigotWorldConfig
config.addDefault( "world-settings.default." + path, def );
return config.getString( "world-settings." + worldName + "." + path, config.getString( "world-settings.default." + path ) );
}
+
+ public int chunksPerTick;
+ public boolean clearChunksOnTick;
+ private void chunksPerTick()
+ {
+ chunksPerTick = getInt( "chunks-per-tick", 650 );
+ log( "Chunks to Grow per Tick: " + chunksPerTick );
+
+ clearChunksOnTick = getBoolean( "clear-tick-list", false );
+ log( "Clear tick list: " + false );
+ }
}
--
1.8.4.msysgit.0
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