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Paper/CraftBukkit-Patches/0018-Entity-Activation-Range.patch
md_5 af480b8b95 Revert previous change to clear chunk list on the end of each tick, make it configurable instead. 
Whilst the new behaviour was technically correct as it prevented the possibility of the chunk tick list actually increasing over time, it introduced a few issues, namely the fact that it slowed growth to unreasonable levels, and interfered with the values which server admins have finally tuned, and come to enjoy over the last few years.
If it is absolutely essential that growth be halted and ticking reduced as much as possible, the config option is there for power users.
If we wish to 'fix' this by default in the future, a new chunk ticking algorithm, which actually has meaningful config options should be designed.
2014-01-14 19:16:43 +11:00

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From 825f177a357447c0542949b349e839fee21c50ce Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 3 Feb 2013 05:10:21 -0500
Subject: [PATCH] Entity Activation Range
This feature gives 3 new configurable ranges that if an entity of the matching type is outside of this radius of any player, will tick at 5% of its normal rate.
This will drastically cut down on tick timings for entities that are not in range of a user to actually be "used".
This change can have dramatic impact on gameplay if configured too low. Balance according to your servers desired gameplay.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 3d6aeff..3e3d935 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -88,7 +88,7 @@ public abstract class Entity {
public int ticksLived;
public int maxFireTicks;
public int fireTicks; // CraftBukkit - private -> public
- protected boolean inWater;
+ public boolean inWater; // Spigot - protected -> public
public int noDamageTicks;
private boolean justCreated;
protected boolean fireProof;
@@ -111,7 +111,13 @@ public abstract class Entity {
public EnumEntitySize at;
public boolean valid; // CraftBukkit
+ // Spigot start
public CustomTimingsHandler tickTimer = org.bukkit.craftbukkit.SpigotTimings.getEntityTimings(this); // Spigot
+ public final byte activationType = org.spigotmc.ActivationRange.initializeEntityActivationType(this);
+ public final boolean defaultActivationState;
+ public long activatedTick = 0;
+ public void inactiveTick() { }
+ // Spigot end
public int getId() {
return this.id;
@@ -138,7 +144,12 @@ public abstract class Entity {
this.setPosition(0.0D, 0.0D, 0.0D);
if (world != null) {
this.dimension = world.worldProvider.dimension;
+ // Spigot start
+ this.defaultActivationState = org.spigotmc.ActivationRange.initializeEntityActivationState(this, world.spigotConfig);
+ } else {
+ this.defaultActivationState = false;
}
+ // Spigot end
this.datawatcher = new DataWatcher(this);
this.datawatcher.a(0, Byte.valueOf((byte) 0));
diff --git a/src/main/java/net/minecraft/server/EntityAgeable.java b/src/main/java/net/minecraft/server/EntityAgeable.java
index 36ed831..7ddca48 100644
--- a/src/main/java/net/minecraft/server/EntityAgeable.java
+++ b/src/main/java/net/minecraft/server/EntityAgeable.java
@@ -6,6 +6,31 @@ public abstract class EntityAgeable extends EntityCreature {
private float bq;
public boolean ageLocked = false; // CraftBukkit
+ // Spigot start
+ @Override
+ public void inactiveTick()
+ {
+ super.inactiveTick();
+ if ( this.world.isStatic || this.ageLocked )
+ { // CraftBukkit
+ this.a( this.isBaby() );
+ } else
+ {
+ int i = this.getAge();
+
+ if ( i < 0 )
+ {
+ ++i;
+ this.setAge( i );
+ } else if ( i > 0 )
+ {
+ --i;
+ this.setAge( i );
+ }
+ }
+ }
+ // Spigot end
+
public EntityAgeable(World world) {
super(world);
}
diff --git a/src/main/java/net/minecraft/server/EntityArrow.java b/src/main/java/net/minecraft/server/EntityArrow.java
index 4b3e5dd..3fd3de9 100644
--- a/src/main/java/net/minecraft/server/EntityArrow.java
+++ b/src/main/java/net/minecraft/server/EntityArrow.java
@@ -14,7 +14,7 @@ public class EntityArrow extends Entity implements IProjectile {
private int f = -1;
private Block g;
private int h;
- private boolean inGround;
+ public boolean inGround = false; // Spigot - private -> public
public int fromPlayer;
public int shake;
public Entity shooter;
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index 7211da8..d06ec7b 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -78,6 +78,13 @@ public abstract class EntityLiving extends Entity {
public int expToDrop;
public int maxAirTicks = 300;
// CraftBukkit end
+ // Spigot start
+ public void inactiveTick()
+ {
+ super.inactiveTick();
+ ++this.aV;
+ }
+ // Spigot end
public EntityLiving(World world) {
super(world);
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 5a368a0..2cc9005 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1234,6 +1234,7 @@ public abstract class World implements IBlockAccess {
this.f.clear();
this.methodProfiler.c("regular");
+ org.spigotmc.ActivationRange.activateEntities(this); // Spigot
timings.entityTick.startTiming(); // Spigot
for (i = 0; i < this.entityList.size(); ++i) {
entity = (Entity) this.entityList.get(i);
@@ -1394,7 +1395,11 @@ public abstract class World implements IBlockAccess {
int j = MathHelper.floor(entity.locZ);
byte b0 = 32;
- if (!flag || this.b(i - b0, 0, j - b0, i + b0, 0, j + b0)) {
+ // Spigot start
+ if (!org.spigotmc.ActivationRange.checkIfActive(entity)) {
+ entity.ticksLived++;
+ entity.inactiveTick();
+ } else {
entity.tickTimer.startTiming(); // Spigot
entity.T = entity.locX;
entity.U = entity.locY;
diff --git a/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java b/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
index 8340c13..541dfe4 100644
--- a/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
+++ b/src/main/java/org/bukkit/craftbukkit/SpigotTimings.java
@@ -30,6 +30,9 @@ public class SpigotTimings {
public static final CustomTimingsHandler playerCommandTimer = new CustomTimingsHandler("** playerCommand");
+ public static final CustomTimingsHandler entityActivationCheckTimer = new CustomTimingsHandler("entityActivationCheck");
+ public static final CustomTimingsHandler checkIfActiveTimer = new CustomTimingsHandler("** checkIfActive");
+
public static final HashMap<String, CustomTimingsHandler> entityTypeTimingMap = new HashMap<String, CustomTimingsHandler>();
public static final HashMap<String, CustomTimingsHandler> tileEntityTypeTimingMap = new HashMap<String, CustomTimingsHandler>();
public static final HashMap<String, CustomTimingsHandler> pluginTaskTimingMap = new HashMap<String, CustomTimingsHandler>();
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
new file mode 100644
index 0000000..db4c927
--- /dev/null
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -0,0 +1,296 @@
+package org.spigotmc;
+
+import java.util.ArrayList;
+import java.util.List;
+import net.minecraft.server.AxisAlignedBB;
+import net.minecraft.server.Chunk;
+import net.minecraft.server.Entity;
+import net.minecraft.server.EntityAmbient;
+import net.minecraft.server.EntityAnimal;
+import net.minecraft.server.EntityArrow;
+import net.minecraft.server.EntityComplexPart;
+import net.minecraft.server.EntityCreature;
+import net.minecraft.server.EntityEnderCrystal;
+import net.minecraft.server.EntityEnderDragon;
+import net.minecraft.server.EntityFireball;
+import net.minecraft.server.EntityFireworks;
+import net.minecraft.server.EntityHuman;
+import net.minecraft.server.EntityLiving;
+import net.minecraft.server.EntityMonster;
+import net.minecraft.server.EntityProjectile;
+import net.minecraft.server.EntitySheep;
+import net.minecraft.server.EntitySlime;
+import net.minecraft.server.EntityTNTPrimed;
+import net.minecraft.server.EntityVillager;
+import net.minecraft.server.EntityWeather;
+import net.minecraft.server.EntityWither;
+import net.minecraft.server.MathHelper;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.World;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.SpigotTimings;
+
+public class ActivationRange
+{
+
+ static AxisAlignedBB maxBB = AxisAlignedBB.a( 0, 0, 0, 0, 0, 0 );
+ static AxisAlignedBB miscBB = AxisAlignedBB.a( 0, 0, 0, 0, 0, 0 );
+ static AxisAlignedBB animalBB = AxisAlignedBB.a( 0, 0, 0, 0, 0, 0 );
+ static AxisAlignedBB monsterBB = AxisAlignedBB.a( 0, 0, 0, 0, 0, 0 );
+
+ /**
+ * Initializes an entities type on construction to specify what group this
+ * entity is in for activation ranges.
+ *
+ * @param entity
+ * @return group id
+ */
+ public static byte initializeEntityActivationType(Entity entity)
+ {
+ if ( entity instanceof EntityMonster || entity instanceof EntitySlime )
+ {
+ return 1; // Monster
+ } else if ( entity instanceof EntityCreature || entity instanceof EntityAmbient )
+ {
+ return 2; // Animal
+ } else
+ {
+ return 3; // Misc
+ }
+ }
+
+ /**
+ * These entities are excluded from Activation range checks.
+ *
+ * @param entity
+ * @param world
+ * @return boolean If it should always tick.
+ */
+ public static boolean initializeEntityActivationState(Entity entity, SpigotWorldConfig config)
+ {
+ if ( ( entity.activationType == 3 && config.miscActivationRange == 0 )
+ || ( entity.activationType == 2 && config.animalActivationRange == 0 )
+ || ( entity.activationType == 1 && config.monsterActivationRange == 0 )
+ || entity instanceof EntityHuman
+ || entity instanceof EntityProjectile
+ || entity instanceof EntityEnderDragon
+ || entity instanceof EntityComplexPart
+ || entity instanceof EntityWither
+ || entity instanceof EntityFireball
+ || entity instanceof EntityWeather
+ || entity instanceof EntityTNTPrimed
+ || entity instanceof EntityEnderCrystal
+ || entity instanceof EntityFireworks )
+ {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Utility method to grow an AABB without creating a new AABB or touching
+ * the pool, so we can re-use ones we have.
+ *
+ * @param target
+ * @param source
+ * @param x
+ * @param y
+ * @param z
+ */
+ public static void growBB(AxisAlignedBB target, AxisAlignedBB source, int x, int y, int z)
+ {
+ target.a = source.a - x;
+ target.b = source.b - y;
+ target.c = source.c - z;
+ target.d = source.d + x;
+ target.e = source.e + y;
+ target.f = source.f + z;
+ }
+
+ /**
+ * Find what entities are in range of the players in the world and set
+ * active if in range.
+ *
+ * @param world
+ */
+ public static void activateEntities(World world)
+ {
+ SpigotTimings.entityActivationCheckTimer.startTiming();
+ final int miscActivationRange = world.spigotConfig.miscActivationRange;
+ final int animalActivationRange = world.spigotConfig.animalActivationRange;
+ final int monsterActivationRange = world.spigotConfig.monsterActivationRange;
+
+ int maxRange = Math.max( monsterActivationRange, animalActivationRange );
+ maxRange = Math.max( maxRange, miscActivationRange );
+ maxRange = Math.min( ( world.spigotConfig.viewDistance << 4 ) - 8, maxRange );
+
+ for ( Entity player : new ArrayList<Entity>( world.players ) )
+ {
+
+ player.activatedTick = MinecraftServer.currentTick;
+ growBB( maxBB, player.boundingBox, maxRange, 256, maxRange );
+ growBB( miscBB, player.boundingBox, miscActivationRange, 256, miscActivationRange );
+ growBB( animalBB, player.boundingBox, animalActivationRange, 256, animalActivationRange );
+ growBB( monsterBB, player.boundingBox, monsterActivationRange, 256, monsterActivationRange );
+
+ int i = MathHelper.floor( maxBB.a / 16.0D );
+ int j = MathHelper.floor( maxBB.d / 16.0D );
+ int k = MathHelper.floor( maxBB.c / 16.0D );
+ int l = MathHelper.floor( maxBB.f / 16.0D );
+
+ for ( int i1 = i; i1 <= j; ++i1 )
+ {
+ for ( int j1 = k; j1 <= l; ++j1 )
+ {
+ if ( world.getWorld().isChunkLoaded( i1, j1 ) )
+ {
+ activateChunkEntities( world.getChunkAt( i1, j1 ) );
+ }
+ }
+ }
+ }
+ SpigotTimings.entityActivationCheckTimer.stopTiming();
+ }
+
+ /**
+ * Checks for the activation state of all entities in this chunk.
+ *
+ * @param chunk
+ */
+ private static void activateChunkEntities(Chunk chunk)
+ {
+ for ( List<Entity> slice : chunk.entitySlices )
+ {
+ for ( Entity entity : slice )
+ {
+ if ( MinecraftServer.currentTick > entity.activatedTick )
+ {
+ if ( entity.defaultActivationState )
+ {
+ entity.activatedTick = MinecraftServer.currentTick;
+ continue;
+ }
+ switch ( entity.activationType )
+ {
+ case 1:
+ if ( monsterBB.b( entity.boundingBox ) )
+ {
+ entity.activatedTick = MinecraftServer.currentTick;
+ }
+ break;
+ case 2:
+ if ( animalBB.b( entity.boundingBox ) )
+ {
+ entity.activatedTick = MinecraftServer.currentTick;
+ }
+ break;
+ case 3:
+ default:
+ if ( miscBB.b( entity.boundingBox ) )
+ {
+ entity.activatedTick = MinecraftServer.currentTick;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /**
+ * If an entity is not in range, do some more checks to see if we should
+ * give it a shot.
+ *
+ * @param entity
+ * @return
+ */
+ public static boolean checkEntityImmunities(Entity entity)
+ {
+ // quick checks.
+ if ( entity.inWater /* isInWater */ || entity.fireTicks > 0 )
+ {
+ return true;
+ }
+ if ( !( entity instanceof EntityArrow ) )
+ {
+ if ( !entity.onGround || entity.passenger != null
+ || entity.vehicle != null )
+ {
+ return true;
+ }
+ } else if ( !( (EntityArrow) entity ).inGround )
+ {
+ return true;
+ }
+ // special cases.
+ if ( entity instanceof EntityLiving )
+ {
+ EntityLiving living = (EntityLiving) entity;
+ if ( living.attackTicks > 0 || living.hurtTicks > 0 || living.effects.size() > 0 )
+ {
+ return true;
+ }
+ if ( entity instanceof EntityCreature && ( (EntityCreature) entity ).target != null )
+ {
+ return true;
+ }
+ if ( entity instanceof EntityVillager && ( (EntityVillager) entity ).bY() /* Getter for first boolean */ )
+ {
+ return true;
+ }
+ if ( entity instanceof EntityAnimal )
+ {
+ EntityAnimal animal = (EntityAnimal) entity;
+ if ( animal.isBaby() || animal.cc() /*love*/ )
+ {
+ return true;
+ }
+ if ( entity instanceof EntitySheep && ( (EntitySheep) entity ).isSheared() )
+ {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Checks if the entity is active for this tick.
+ *
+ * @param entity
+ * @return
+ */
+ public static boolean checkIfActive(Entity entity)
+ {
+ SpigotTimings.checkIfActiveTimer.startTiming();
+ boolean isActive = entity.activatedTick >= MinecraftServer.currentTick || entity.defaultActivationState;
+
+ // Should this entity tick?
+ if ( !isActive )
+ {
+ if ( ( MinecraftServer.currentTick - entity.activatedTick - 1 ) % 20 == 0 )
+ {
+ // Check immunities every 20 ticks.
+ if ( checkEntityImmunities( entity ) )
+ {
+ // Triggered some sort of immunity, give 20 full ticks before we check again.
+ entity.activatedTick = MinecraftServer.currentTick + 20;
+ }
+ isActive = true;
+ }
+ // Add a little performance juice to active entities. Skip 1/4 if not immune.
+ } else if ( !entity.defaultActivationState && entity.ticksLived % 4 == 0 && !checkEntityImmunities( entity ) )
+ {
+ isActive = false;
+ }
+ int x = MathHelper.floor( entity.locX );
+ int z = MathHelper.floor( entity.locZ );
+ // Make sure not on edge of unloaded chunk
+ if ( isActive && !entity.world.areChunksLoaded( x, 0, z, 16 ) )
+ {
+ isActive = false;
+ }
+ SpigotTimings.checkIfActiveTimer.stopTiming();
+ return isActive;
+ }
+}
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 49a5b7a..1d95207 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -138,4 +138,15 @@ public class SpigotWorldConfig
mobSpawnRange = (byte) getInt( "mob-spawn-range", 4 );
log( "Mob Spawn Range: " + mobSpawnRange );
}
+
+ public int animalActivationRange = 32;
+ public int monsterActivationRange = 32;
+ public int miscActivationRange = 16;
+ private void activationRange()
+ {
+ animalActivationRange = getInt( "entity-activation-range.animals", animalActivationRange );
+ monsterActivationRange = getInt( "entity-activation-range.monsters", monsterActivationRange );
+ miscActivationRange = getInt( "entity-activation-range.misc", miscActivationRange );
+ log( "Entity Activation Range: An " + animalActivationRange + " / Mo " + monsterActivationRange + " / Mi " + miscActivationRange );
+ }
}
--
1.8.3.2
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