From 3f18958bc3eb43a0c0aa3841b24810d9af5c7378 Mon Sep 17 00:00:00 2001 From: md_5 Date: Tue, 11 Jun 2013 12:56:02 +1000 Subject: [PATCH] Better Chunk Tick Selection An optimized chunk ticking algorithm which better selects chunks around players which are active on the server. diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java index 12c613c..7ecd668 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -62,7 +62,7 @@ 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 K; public boolean allowMonsters; public boolean allowAnimals; @@ -79,6 +79,30 @@ public abstract class World implements IBlockAccess { private boolean M; int[] I; + // Spigot start + protected final net.minecraft.util.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); @@ -128,6 +152,11 @@ 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 net.minecraft.util.gnu.trove.map.hash.TLongShortHashMap( spigotConfig.chunksPerTick * 5, 0.7f, Long.MIN_VALUE, Short.MIN_VALUE ); + this.chunkTickList.setAutoCompactionFactor( 0 ); + // Spigot end this.K = this.random.nextInt(12000); this.allowMonsters = true; @@ -1987,17 +2016,44 @@ public abstract class World implements IBlockAccess { int k; int l; + // 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); l = this.p(); - for (int i1 = -l; i1 <= l; ++i1) { - for (int j1 = -l; j1 <= l; ++j1) { - this.chunkTickList.add(org.bukkit.craftbukkit.util.LongHash.toLong(i1 + j, j1 + 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 ba7965d..71626fa 100644 --- a/src/main/java/net/minecraft/server/WorldServer.java +++ b/src/main/java/net/minecraft/server/WorldServer.java @@ -307,10 +307,20 @@ public class WorldServer extends World { // CraftBukkit start // Iterator iterator = this.chunkTickList.iterator(); - for (long chunkCoord : this.chunkTickList.popAll()) { + // Spigot start + for (net.minecraft.util.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; @@ -401,6 +411,7 @@ public class WorldServer extends World { 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); } } @@ -409,6 +420,12 @@ public class WorldServer extends World { 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..90a227f 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: " + clearChunksOnTick ); + } } -- 1.9.1