From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 13 May 2016 01:38:06 -0400
Subject: [PATCH] Entity Activation Range 2.0

Optimizes performance of Activation Range

Adds many new configurations and a new wake up inactive system

Fixes and adds new Immunities to improve gameplay behavior

Adds water Mobs to activation range config and nerfs fish
Adds flying monsters to control ghast and phantoms
Adds villagers as separate config

diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index ba18da7b9d069b1d553c2ae8838296351e3358aa..1fa7b82685a5e55d57d78abd5151f20e20178646 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -163,7 +163,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     public boolean Y;
     public boolean impulse;
     public int portalCooldown;
-    protected boolean inPortal;
+    public boolean inPortal; // Paper - public
     protected int portalTicks;
     protected BlockPosition ac;
     private boolean invulnerable;
@@ -187,6 +187,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     public final org.spigotmc.ActivationRange.ActivationType activationType = org.spigotmc.ActivationRange.initializeEntityActivationType(this);
     public final boolean defaultActivationState;
     public long activatedTick = Integer.MIN_VALUE;
+    public boolean isTemporarilyActive = false; // Paper
     public boolean spawnedViaMobSpawner; // Paper - Yes this name is similar to above, upstream took the better one
     protected int numCollisions = 0; // Paper
     public void inactiveTick() { }
@@ -577,6 +578,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             this.recalcPosition();
         } else {
             if (enummovetype == EnumMoveType.PISTON) {
+                this.activatedTick = MinecraftServer.currentTick + 20; // Paper
                 vec3d = this.b(vec3d);
                 if (vec3d.equals(Vec3D.ORIGIN)) {
                     return;
@@ -589,6 +591,13 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
                 this.x = Vec3D.ORIGIN;
                 this.setMot(Vec3D.ORIGIN);
             }
+            // Paper start - ignore movement changes while inactive.
+            if (isTemporarilyActive && !(this instanceof EntityItem || this instanceof EntityMinecartAbstract) && vec3d == getMot() && enummovetype == EnumMoveType.SELF) {
+                setMot(Vec3D.ORIGIN);
+                this.world.getMethodProfiler().exit();
+                return;
+            }
+            // Paper end
 
             vec3d = this.a(vec3d, enummovetype);
             Vec3D vec3d1 = this.g(vec3d);
@@ -1919,6 +1928,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         }
     }
 
+    public void syncPositionOf(Entity entity) { k(entity); } // Paper - OBFHELPER
     public void k(Entity entity) {
         this.a(entity, Entity::setPosition);
     }
@@ -2723,6 +2733,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         return this.ae;
     }
 
+    public final boolean isPushedByWater() { return this.bV(); } // Paper - OBFHELPER - the below is not an obfhelper, don't use it!
     public boolean bV() {
         // Paper start
         return this.pushedByWater();
diff --git a/src/main/java/net/minecraft/server/EntityCreature.java b/src/main/java/net/minecraft/server/EntityCreature.java
index 68f1a101174f4a2f7ab5556a5b733f75f3a7802f..4757e5a92c9cf04fa52d62bac6dae782e08ddab1 100644
--- a/src/main/java/net/minecraft/server/EntityCreature.java
+++ b/src/main/java/net/minecraft/server/EntityCreature.java
@@ -7,6 +7,7 @@ import org.bukkit.event.entity.EntityUnleashEvent;
 public abstract class EntityCreature extends EntityInsentient {
 
     public org.bukkit.craftbukkit.entity.CraftCreature getBukkitCreature() { return (org.bukkit.craftbukkit.entity.CraftCreature) super.getBukkitEntity(); } // Paper
+    public BlockPosition movingTarget = null; public BlockPosition getMovingTarget() { return movingTarget; } // Paper
 
     protected EntityCreature(EntityTypes<? extends EntityCreature> entitytypes, World world) {
         super(entitytypes, world);
diff --git a/src/main/java/net/minecraft/server/EntityInsentient.java b/src/main/java/net/minecraft/server/EntityInsentient.java
index d91503b3e46c6ded3d77da4feeb8350df5bf924c..7ddf276732a58c998c733aaaeee3e1bfc614ea0a 100644
--- a/src/main/java/net/minecraft/server/EntityInsentient.java
+++ b/src/main/java/net/minecraft/server/EntityInsentient.java
@@ -47,7 +47,7 @@ public abstract class EntityInsentient extends EntityLiving {
     public MinecraftKey lootTableKey;
     public long lootTableSeed;
     @Nullable
-    private Entity leashHolder;
+    public Entity leashHolder; // Paper - private -> public
     private int bx;
     @Nullable
     private NBTTagCompound by;
@@ -128,6 +128,17 @@ public abstract class EntityInsentient extends EntityLiving {
         return this.lookController;
     }
 
+    // Paper start
+    @Override
+    public void inactiveTick() {
+        super.inactiveTick();
+        this.goalSelector.inactiveTick();
+        if (this.targetSelector.inactiveTick()) {
+            this.targetSelector.doTick();
+        }
+    }
+    // Paper end
+
     public ControllerMove getControllerMove() {
         if (this.isPassenger() && this.getVehicle() instanceof EntityInsentient) {
             EntityInsentient entityinsentient = (EntityInsentient) this.getVehicle();
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
index f997cda883038edaed55f886fa43ee9053bde888..fe88548ff1e63c5c43351dd0dd3bf383cb985409 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
@@ -98,7 +98,7 @@ public abstract class EntityLiving extends Entity {
     protected float aN;
     protected int aO;protected int getKillCount() { return this.aO; } // Paper - OBFHELPER
     public float lastDamage;
-    protected boolean jumping;
+    public boolean jumping; // Paper protected -> public
     public float aR;
     public float aS;
     public float aT;
diff --git a/src/main/java/net/minecraft/server/EntityLlama.java b/src/main/java/net/minecraft/server/EntityLlama.java
index 65cbe073da6a035f1ac539908a3fa8dbf0f42808..d9e1b43283bee15c659dd3a99e45d9412aedd0bc 100644
--- a/src/main/java/net/minecraft/server/EntityLlama.java
+++ b/src/main/java/net/minecraft/server/EntityLlama.java
@@ -404,6 +404,7 @@ public class EntityLlama extends EntityHorseChestedAbstract implements IRangedEn
         return this.bC != null;
     }
 
+    public final boolean inCaravan() { return this.fC(); } // Paper - OBFHELPER
     public boolean fC() {
         return this.bB != null;
     }
diff --git a/src/main/java/net/minecraft/server/EntityVillager.java b/src/main/java/net/minecraft/server/EntityVillager.java
index 732323ee1de01929c73bc5f98444c0f68f908a67..2ed6af09e97a087ffdd5e014564d9b49bda51b77 100644
--- a/src/main/java/net/minecraft/server/EntityVillager.java
+++ b/src/main/java/net/minecraft/server/EntityVillager.java
@@ -144,17 +144,29 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
     @Override
     public void inactiveTick() {
         // SPIGOT-3874, SPIGOT-3894, SPIGOT-3846, SPIGOT-5286 :(
-        if (world.spigotConfig.tickInactiveVillagers && this.doAITick()) {
-            this.mobTick();
+        // Paper start
+        if (this.getUnhappy() > 0) {
+            this.setUnhappy(this.getUnhappy() - 1);
         }
+        if (this.doAITick()) {
+            if (world.spigotConfig.tickInactiveVillagers) {
+                this.mobTick();
+            } else {
+                this.mobTick(true);
+            }
+        }
+        doReputationTick();
+        // Paper end
+
         super.inactiveTick();
     }
     // Spigot End
 
     @Override
-    protected void mobTick() {
+    protected void mobTick() { mobTick(false); }
+    protected void mobTick(boolean inactive) {
         this.world.getMethodProfiler().enter("villagerBrain");
-        this.getBehaviorController().a((WorldServer) this.world, this); // CraftBukkit - decompile error
+        if (!inactive) this.getBehaviorController().a((WorldServer) this.world, this); // CraftBukkit - decompile error // Paper
         this.world.getMethodProfiler().exit();
         if (this.bF) {
             this.bF = false;
@@ -178,7 +190,7 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
             this.bv = null;
         }
 
-        if (!this.isNoAI() && this.random.nextInt(100) == 0) {
+        if (!inactive && !this.isNoAI() && this.random.nextInt(100) == 0) { // Paper
             Raid raid = ((WorldServer) this.world).b_(this.getChunkCoordinates());
 
             if (raid != null && raid.v() && !raid.a()) {
@@ -189,6 +201,7 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
         if (this.getVillagerData().getProfession() == VillagerProfession.NONE && this.eN()) {
             this.eT();
         }
+        if (inactive) return; // Paper
 
         super.mobTick();
     }
@@ -825,6 +838,7 @@ public class EntityVillager extends EntityVillagerAbstract implements Reputation
         }
     }
 
+    private void doReputationTick() { fw(); } // Paper - OBFHELPER
     private void fw() {
         long i = this.world.getTime();
 
diff --git a/src/main/java/net/minecraft/server/EntityVillagerAbstract.java b/src/main/java/net/minecraft/server/EntityVillagerAbstract.java
index ed73f74e4de4b9d737819d7fda213421801e9c54..74ca39067e7538eac5d70031564d0508846204a5 100644
--- a/src/main/java/net/minecraft/server/EntityVillagerAbstract.java
+++ b/src/main/java/net/minecraft/server/EntityVillagerAbstract.java
@@ -44,10 +44,12 @@ public abstract class EntityVillagerAbstract extends EntityAgeable implements NP
         return super.prepare(worldaccess, difficultydamagescaler, enummobspawn, (GroupDataEntity) groupdataentity, nbttagcompound);
     }
 
+    public final int getUnhappy() { return eK(); } // Paper - OBFHELPER
     public int eK() {
         return (Integer) this.datawatcher.get(EntityVillagerAbstract.bp);
     }
 
+    public final void setUnhappy(int i) { s(i); } // Paper - OBFHELPER
     public void s(int i) {
         this.datawatcher.set(EntityVillagerAbstract.bp, i);
     }
diff --git a/src/main/java/net/minecraft/server/PathfinderGoal.java b/src/main/java/net/minecraft/server/PathfinderGoal.java
index ffc750d0f800d76854388506c5bc4bcdb99fc674..b132cb42da9a733e46fe9059258db7b77f811b3b 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoal.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoal.java
@@ -20,7 +20,10 @@ public abstract class PathfinderGoal {
 
     public void c() {}
 
-    public void d() {}
+    public void d() {
+        onTaskReset(); // Paper
+    }
+    public void onTaskReset() {} // Paper
 
     public void e() {}
 
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalGotoTarget.java b/src/main/java/net/minecraft/server/PathfinderGoalGotoTarget.java
index 9b0511e996a5e3952c6f975e7c93299c532a8ea1..8bd75b8243590fcddd0e330a7276c03a71a38b93 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalGotoTarget.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalGotoTarget.java
@@ -4,12 +4,12 @@ import java.util.EnumSet;
 
 public abstract class PathfinderGoalGotoTarget extends PathfinderGoal {
 
-    protected final EntityCreature a;
+    protected final EntityCreature a;public EntityCreature getEntity() { return a; } // Paper - OBFHELPER
     public final double b;
     protected int c;
     protected int d;
     private int g;
-    protected BlockPosition e;public final BlockPosition getTargetPosition() { return this.e; } // Paper - OBFHELPER
+    protected BlockPosition e; public final BlockPosition getTargetPosition() { return this.e; } public void setTargetPosition(BlockPosition pos) { this.e = pos; getEntity().movingTarget = pos != BlockPosition.ZERO ? pos : null; } // Paper - OBFHELPER
     private boolean h;
     private final int i;
     private final int j;
@@ -18,6 +18,13 @@ public abstract class PathfinderGoalGotoTarget extends PathfinderGoal {
     public PathfinderGoalGotoTarget(EntityCreature entitycreature, double d0, int i) {
         this(entitycreature, d0, i, 1);
     }
+    // Paper start - activation range improvements
+    @Override
+    public void onTaskReset() {
+        super.onTaskReset();
+        setTargetPosition(BlockPosition.ZERO);
+    }
+    // Paper end
 
     public PathfinderGoalGotoTarget(EntityCreature entitycreature, double d0, int i, int j) {
         this.e = BlockPosition.ZERO;
@@ -106,6 +113,7 @@ public abstract class PathfinderGoalGotoTarget extends PathfinderGoal {
                         blockposition_mutableblockposition.a((BaseBlockPosition) blockposition, i1, k - 1, j1);
                         if (this.a.a((BlockPosition) blockposition_mutableblockposition) && this.a(this.a.world, blockposition_mutableblockposition)) {
                             this.e = blockposition_mutableblockposition;
+                            setTargetPosition(blockposition_mutableblockposition.immutableCopy()); // Paper
                             return true;
                         }
                     }
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalSelector.java b/src/main/java/net/minecraft/server/PathfinderGoalSelector.java
index 482ce2cd8123252110508e8e03aa65afdd533e0a..b18e53220d8dbd50723c4201231091cbe4f4119a 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalSelector.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalSelector.java
@@ -25,10 +25,11 @@ public class PathfinderGoalSelector {
         }
     };
     private final Map<PathfinderGoal.Type, PathfinderGoalWrapped> c = new EnumMap(PathfinderGoal.Type.class);
-    private final Set<PathfinderGoalWrapped> d = Sets.newLinkedHashSet();
+    private final Set<PathfinderGoalWrapped> d = Sets.newLinkedHashSet(); private Set<PathfinderGoalWrapped> getTasks() { return d; }// Paper - OBFHELPER
     private final Supplier<GameProfilerFiller> e;
     private final EnumSet<PathfinderGoal.Type> f = EnumSet.noneOf(PathfinderGoal.Type.class);
-    private int g = 3;
+    private int g = 3;private int getTickRate() { return g; } // Paper - OBFHELPER
+    private int curRate;private int getCurRate() { return curRate; } private void incRate() { this.curRate++; } // Paper TODO
 
     public PathfinderGoalSelector(Supplier<GameProfilerFiller> supplier) {
         this.e = supplier;
@@ -38,6 +39,25 @@ public class PathfinderGoalSelector {
         this.d.add(new PathfinderGoalWrapped(i, pathfindergoal));
     }
 
+    // Paper start
+    public boolean inactiveTick() {
+        if (getCurRate() % getTickRate() != 0) {
+            incRate();
+            return false;
+        } else {
+            return true;
+        }
+    }
+    public boolean hasTasks() {
+        for (PathfinderGoalWrapped task : getTasks()) {
+            if (task.isRunning()) {
+                return true;
+            }
+        }
+        return false;
+    }
+    // Paper end
+
     public void a(PathfinderGoal pathfindergoal) {
         this.d.stream().filter((pathfindergoalwrapped) -> {
             return pathfindergoalwrapped.j() == pathfindergoal;
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalWrapped.java b/src/main/java/net/minecraft/server/PathfinderGoalWrapped.java
index 182cd7e9110408fff9909ef362d368d055a2b167..f3df10587e652d3a26d15deb09304b97a727cd88 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalWrapped.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalWrapped.java
@@ -64,6 +64,7 @@ public class PathfinderGoalWrapped extends PathfinderGoal {
         return this.a.i();
     }
 
+    public boolean isRunning() { return this.g(); } // Paper - OBFHELPER
     public boolean g() {
         return this.c;
     }
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 67a38ed5ec173ece6f072540b9fbb47400bb5af0..3b0b86bd33601f741850047e3fe0b6022bc1095b 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -82,6 +82,12 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
     public long ticksPerWaterSpawns;
     public long ticksPerWaterAmbientSpawns;
     public long ticksPerAmbientSpawns;
+    // Paper start
+    public int wakeupInactiveRemainingAnimals;
+    public int wakeupInactiveRemainingFlying;
+    public int wakeupInactiveRemainingMonsters;
+    public int wakeupInactiveRemainingVillagers;
+    // Paper end
     public boolean populating;
     public final org.spigotmc.SpigotWorldConfig spigotConfig; // Spigot
 
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index a06a9c4a50acdad951da3a95d0c46cf9766164c1..c345729675c76c5cd02a469283ed668a2df52816 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -747,17 +747,17 @@ public class WorldServer extends World implements GeneratorAccessSeed {
             ++TimingHistory.entityTicks; // Paper - timings
             // Spigot start
             co.aikar.timings.Timing timer; // Paper
-            if (!org.spigotmc.ActivationRange.checkIfActive(entity)) {
+            /*if (!org.spigotmc.ActivationRange.checkIfActive(entity)) { // Paper - comment out - EAR 2, reimplement below
                 entity.ticksLived++;
                 timer =  entity.getEntityType().inactiveTickTimer.startTiming(); try { // Paper - timings
                 entity.inactiveTick();
                 } finally { timer.stopTiming(); } // Paper
                 return;
-            }
+            }*/ // Paper - comment out EAR 2
             // Spigot end
             // Paper start- timings
-            TimingHistory.activatedEntityTicks++;
-            timer = entity.getVehicle() != null ? entity.getEntityType().passengerTickTimer.startTiming() : entity.getEntityType().tickTimer.startTiming();
+            final boolean isActive = org.spigotmc.ActivationRange.checkIfActive(entity);
+            timer = isActive ? entity.getEntityType().tickTimer.startTiming() : entity.getEntityType().inactiveTickTimer.startTiming(); // Paper
             try {
             // Paper end - timings
             entity.g(entity.locX(), entity.locY(), entity.locZ());
@@ -771,12 +771,16 @@ public class WorldServer extends World implements GeneratorAccessSeed {
                     return IRegistry.ENTITY_TYPE.getKey(entity.getEntityType()).toString();
                 });
                 gameprofilerfiller.c("tickNonPassenger");
+                if (isActive) { // Paper - EAR 2
+                    TimingHistory.activatedEntityTicks++; // Paper
                 entity.tick();
                 entity.postTick(); // CraftBukkit
+                } else { entity.inactiveTick(); } // Paper - EAR 2
                 gameprofilerfiller.exit();
             }
 
             this.chunkCheck(entity);
+            } finally { timer.stopTiming(); } // Paper - timings
             if (entity.inChunk) {
                 Iterator iterator = entity.getPassengers().iterator();
 
@@ -786,7 +790,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
                     this.a(entity, entity1);
                 }
             }
-            } finally { timer.stopTiming(); } // Paper - timings
+            //} finally { timer.stopTiming(); } // Paper - timings - move up
 
         }
     }
@@ -794,6 +798,11 @@ public class WorldServer extends World implements GeneratorAccessSeed {
     public void a(Entity entity, Entity entity1) {
         if (!entity1.dead && entity1.getVehicle() == entity) {
             if (entity1 instanceof EntityHuman || this.getChunkProvider().a(entity1)) {
+                // Paper - EAR 2
+                final boolean isActive = org.spigotmc.ActivationRange.checkIfActive(entity1);
+                co.aikar.timings.Timing timer = isActive ? entity1.getEntityType().passengerTickTimer.startTiming() : entity1.getEntityType().passengerInactiveTickTimer.startTiming(); // Paper
+                try {
+                // Paper end
                 entity1.g(entity1.locX(), entity1.locY(), entity1.locZ());
                 entity1.lastYaw = entity1.yaw;
                 entity1.lastPitch = entity1.pitch;
@@ -805,8 +814,17 @@ public class WorldServer extends World implements GeneratorAccessSeed {
                         return IRegistry.ENTITY_TYPE.getKey(entity1.getEntityType()).toString();
                     });
                     gameprofilerfiller.c("tickPassenger");
+                    // Paper start - EAR 2
+                    if (isActive) {
                     entity1.passengerTick();
                     entity1.postTick(); // CraftBukkit
+                    } else {
+                        entity1.setMot(Vec3D.ORIGIN);
+                        entity1.inactiveTick();
+                        // copied from inside of if (isPassenger()) of passengerTick, but that ifPassenger is unnecessary
+                        entity.syncPositionOf(entity1);
+                    }
+                    // Paper end - EAR 2
                     gameprofilerfiller.exit();
                 }
 
@@ -819,7 +837,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
 
                         this.a(entity1, entity2);
                     }
-                }
+                } } finally { timer.stopTiming(); } // Paper - EAR2 timings
 
             }
         } else {
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
index b73af0a5fb2d08c2f3a52c699ef0d8ed34c83f77..9030284ba06dfdcc17c2710f428e84d70afea8d5 100644
--- a/src/main/java/org/spigotmc/ActivationRange.java
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -2,24 +2,34 @@ package org.spigotmc;
 
 import java.util.Collection;
 import java.util.List;
+
+import net.minecraft.server.Activity;
 import net.minecraft.server.AxisAlignedBB;
+import net.minecraft.server.BehaviorController;
+import net.minecraft.server.BlockPosition;
 import net.minecraft.server.Chunk;
+import net.minecraft.server.ChunkProviderServer; // Paper
 import net.minecraft.server.Entity;
 import net.minecraft.server.EntityAmbient;
 import net.minecraft.server.EntityAnimal;
 import net.minecraft.server.EntityArrow;
+import net.minecraft.server.EntityBee;
 import net.minecraft.server.EntityComplexPart;
 import net.minecraft.server.EntityCreature;
 import net.minecraft.server.EntityCreeper;
 import net.minecraft.server.EntityEnderCrystal;
 import net.minecraft.server.EntityEnderDragon;
+import net.minecraft.server.EntityEnderSignal;
 import net.minecraft.server.EntityFallingBlock; // Paper
 import net.minecraft.server.EntityFireball;
 import net.minecraft.server.EntityFireworks;
+import net.minecraft.server.EntityFlying;
 import net.minecraft.server.EntityHuman;
 import net.minecraft.server.EntityLightning;
 import net.minecraft.server.EntityLiving;
 import net.minecraft.server.EntityMonster;
+import net.minecraft.server.EntityPillager;
+import net.minecraft.server.EntityPlayer;
 import net.minecraft.server.EntityProjectile;
 import net.minecraft.server.EntityRaider;
 import net.minecraft.server.EntitySheep;
@@ -29,16 +39,26 @@ import net.minecraft.server.EntityTNTPrimed;
 import net.minecraft.server.EntityThrownTrident;
 import net.minecraft.server.EntityVillager;
 import net.minecraft.server.EntityWither;
+import net.minecraft.server.IMonster;
 import net.minecraft.server.MathHelper;
+import net.minecraft.server.MemoryModuleType;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.World;
 import co.aikar.timings.MinecraftTimings;
+// Paper start
+import net.minecraft.server.EntityInsentient;
+import net.minecraft.server.EntityLlama;
+import net.minecraft.server.EntityWaterAnimal;
+// Paper end
 
 public class ActivationRange
 {
 
     public enum ActivationType
     {
+        WATER, // Paper
+        FLYING_MONSTER, // Paper
+        VILLAGER, // Paper
         MONSTER,
         ANIMAL,
         RAIDER,
@@ -46,6 +66,43 @@ public class ActivationRange
 
         AxisAlignedBB boundingBox = new AxisAlignedBB( 0, 0, 0, 0, 0, 0 );
     }
+    // Paper start
+
+    static Activity[] VILLAGER_PANIC_IMMUNITIES = {
+        Activity.HIDE,
+        Activity.PRE_RAID,
+        Activity.RAID,
+        Activity.PANIC
+    };
+
+    private static int checkInactiveWakeup(Entity entity) {
+        World world = entity.world;
+        SpigotWorldConfig config = world.spigotConfig;
+        long inactiveFor = MinecraftServer.currentTick - entity.activatedTick;
+        if (entity.activationType == ActivationType.VILLAGER) {
+            if (inactiveFor > config.wakeUpInactiveVillagersEvery && world.wakeupInactiveRemainingVillagers > 0) {
+                world.wakeupInactiveRemainingVillagers--;
+                return config.wakeUpInactiveVillagersFor;
+            }
+        } else if (entity.activationType == ActivationType.ANIMAL) {
+            if (inactiveFor > config.wakeUpInactiveAnimalsEvery && world.wakeupInactiveRemainingAnimals > 0) {
+                world.wakeupInactiveRemainingAnimals--;
+                return config.wakeUpInactiveAnimalsFor;
+            }
+        } else if (entity.activationType == ActivationType.FLYING_MONSTER) {
+            if (inactiveFor > config.wakeUpInactiveFlyingEvery && world.wakeupInactiveRemainingFlying > 0) {
+                world.wakeupInactiveRemainingFlying--;
+                return config.wakeUpInactiveFlyingFor;
+            }
+        } else if (entity.activationType == ActivationType.MONSTER || entity.activationType == ActivationType.RAIDER) {
+            if (inactiveFor > config.wakeUpInactiveMonstersEvery && world.wakeupInactiveRemainingMonsters > 0) {
+                world.wakeupInactiveRemainingMonsters--;
+                return config.wakeUpInactiveMonstersFor;
+            }
+        }
+        return -1;
+    }
+    // Paper end
 
     static AxisAlignedBB maxBB = new AxisAlignedBB( 0, 0, 0, 0, 0, 0 );
 
@@ -58,10 +115,13 @@ public class ActivationRange
      */
     public static ActivationType initializeEntityActivationType(Entity entity)
     {
+        if (entity instanceof EntityWaterAnimal) { return ActivationType.WATER; } // Paper
+        else if (entity instanceof EntityVillager) { return ActivationType.VILLAGER; } // Paper
+        else if (entity instanceof EntityFlying && entity instanceof IMonster) { return ActivationType.FLYING_MONSTER; } // Paper - doing & Monster incase Flying no longer includes monster in future
         if ( entity instanceof EntityRaider )
         {
             return ActivationType.RAIDER;
-        } else if ( entity instanceof EntityMonster || entity instanceof EntitySlime )
+        } else if ( entity instanceof IMonster ) // Paper - correct monster check
         {
             return ActivationType.MONSTER;
         } else if ( entity instanceof EntityCreature || entity instanceof EntityAmbient )
@@ -82,10 +142,14 @@ public class ActivationRange
      */
     public static boolean initializeEntityActivationState(Entity entity, SpigotWorldConfig config)
     {
-        if ( ( entity.activationType == ActivationType.MISC && config.miscActivationRange == 0 )
-                || ( entity.activationType == ActivationType.RAIDER && config.raiderActivationRange == 0 )
-                || ( entity.activationType == ActivationType.ANIMAL && config.animalActivationRange == 0 )
-                || ( entity.activationType == ActivationType.MONSTER && config.monsterActivationRange == 0 )
+        if ( ( entity.activationType == ActivationType.MISC && config.miscActivationRange <= 0 )
+                || ( entity.activationType == ActivationType.RAIDER && config.raiderActivationRange <= 0 )
+                || ( entity.activationType == ActivationType.ANIMAL && config.animalActivationRange <= 0 )
+                || ( entity.activationType == ActivationType.MONSTER && config.monsterActivationRange <= 0 )
+                || ( entity.activationType == ActivationType.VILLAGER && config.villagerActivationRange <= 0 ) // Paper
+                || ( entity.activationType == ActivationType.WATER && config.waterActivationRange <= 0 ) // Paper
+                || ( entity.activationType == ActivationType.FLYING_MONSTER && config.flyingMonsterActivationRange <= 0 ) // Paper
+                || entity instanceof EntityEnderSignal // Paper
                 || entity instanceof EntityHuman
                 || entity instanceof EntityProjectile
                 || entity instanceof EntityEnderDragon
@@ -118,10 +182,25 @@ public class ActivationRange
         final int raiderActivationRange = world.spigotConfig.raiderActivationRange;
         final int animalActivationRange = world.spigotConfig.animalActivationRange;
         final int monsterActivationRange = world.spigotConfig.monsterActivationRange;
+        // Paper start
+        final int waterActivationRange = world.spigotConfig.waterActivationRange;
+        final int flyingActivationRange = world.spigotConfig.flyingMonsterActivationRange;
+        final int villagerActivationRange = world.spigotConfig.villagerActivationRange;
+        world.wakeupInactiveRemainingAnimals = Math.min(world.wakeupInactiveRemainingAnimals + 1, world.spigotConfig.wakeUpInactiveAnimals);
+        world.wakeupInactiveRemainingVillagers = Math.min(world.wakeupInactiveRemainingVillagers + 1, world.spigotConfig.wakeUpInactiveVillagers);
+        world.wakeupInactiveRemainingMonsters = Math.min(world.wakeupInactiveRemainingMonsters + 1, world.spigotConfig.wakeUpInactiveMonsters);
+        world.wakeupInactiveRemainingFlying = Math.min(world.wakeupInactiveRemainingFlying + 1, world.spigotConfig.wakeUpInactiveFlying);
+        final ChunkProviderServer chunkProvider = (ChunkProviderServer) world.getChunkProvider();
+        // Paper end
 
         int maxRange = Math.max( monsterActivationRange, animalActivationRange );
         maxRange = Math.max( maxRange, raiderActivationRange );
         maxRange = Math.max( maxRange, miscActivationRange );
+        // Paper start
+        maxRange = Math.max( maxRange, flyingActivationRange );
+        maxRange = Math.max( maxRange, waterActivationRange );
+        maxRange = Math.max( maxRange, villagerActivationRange );
+        // Paper end
         maxRange = Math.min( ( world.spigotConfig.viewDistance << 4 ) - 8, maxRange );
 
         for ( EntityHuman player : world.getPlayers() )
@@ -133,6 +212,11 @@ public class ActivationRange
             ActivationType.RAIDER.boundingBox = player.getBoundingBox().grow( raiderActivationRange, 256, raiderActivationRange );
             ActivationType.ANIMAL.boundingBox = player.getBoundingBox().grow( animalActivationRange, 256, animalActivationRange );
             ActivationType.MONSTER.boundingBox = player.getBoundingBox().grow( monsterActivationRange, 256, monsterActivationRange );
+            // Paper start
+            ActivationType.WATER.boundingBox = player.getBoundingBox().grow( waterActivationRange, 256, waterActivationRange );
+            ActivationType.FLYING_MONSTER.boundingBox = player.getBoundingBox().grow( flyingActivationRange, 256, flyingActivationRange );
+            ActivationType.VILLAGER.boundingBox = player.getBoundingBox().grow( villagerActivationRange, 256, waterActivationRange );
+            // Paper end
 
             int i = MathHelper.floor( maxBB.minX / 16.0D );
             int j = MathHelper.floor( maxBB.maxX / 16.0D );
@@ -143,7 +227,7 @@ public class ActivationRange
             {
                 for ( int j1 = k; j1 <= l; ++j1 )
                 {
-                    Chunk chunk = (Chunk) world.getChunkIfLoadedImmediately( i1, j1 );
+                    Chunk chunk = chunkProvider.getChunkAtIfLoadedMainThreadNoCache( i1, j1 ); // Paper
                     if ( chunk != null )
                     {
                         activateChunkEntities( chunk );
@@ -161,19 +245,15 @@ public class ActivationRange
      */
     private static void activateChunkEntities(Chunk chunk)
     {
-        for ( List<Entity> slice : chunk.entitySlices )
-        {
-            for ( Entity entity : (Collection<Entity>) slice )
+        // Paper start
+        Entity[] rawData = chunk.entities.getRawData();
+        for (int i = 0; i < chunk.entities.size(); i++) {
+            Entity entity = rawData[i];
+            //for ( Entity entity : (Collection<Entity>) slice )
+            // Paper end
             {
-                if ( MinecraftServer.currentTick > entity.activatedTick )
-                {
-                    if ( entity.defaultActivationState )
-                    {
-                        entity.activatedTick = MinecraftServer.currentTick;
-                        continue;
-                    }
-                    if ( entity.activationType.boundingBox.c( entity.getBoundingBox() ) )
-                    {
+                if (MinecraftServer.currentTick > entity.activatedTick) {
+                    if (entity.defaultActivationState || entity.activationType.boundingBox.c(entity.getBoundingBox())) { // Paper
                         entity.activatedTick = MinecraftServer.currentTick;
                     }
                 }
@@ -188,56 +268,105 @@ public class ActivationRange
      * @param entity
      * @return
      */
-    public static boolean checkEntityImmunities(Entity entity)
+    public static int checkEntityImmunities(Entity entity) // Paper - return # of ticks to get immunity
     {
+        // Paper start
+        SpigotWorldConfig config = entity.world.spigotConfig;
+        int inactiveWakeUpImmunity = checkInactiveWakeup(entity);
+        if (inactiveWakeUpImmunity > -1) {
+            return inactiveWakeUpImmunity;
+        }
+        if (entity.fireTicks > 0) {
+            return 2;
+        }
+        long inactiveFor = MinecraftServer.currentTick - entity.activatedTick;
+        // Paper end
         // quick checks.
-        if ( entity.inWater || entity.fireTicks > 0 )
+        if ( (entity.activationType != ActivationType.WATER && entity.inWater && entity.isPushedByWater()) ) // Paper
         {
-            return true;
+            return 100; // Paper
         }
         if ( !( entity instanceof EntityArrow ) )
         {
-            if ( !entity.isOnGround() || !entity.passengers.isEmpty() || entity.isPassenger() )
+            if ( (!entity.isOnGround() && !(entity instanceof EntityFlying)) ) // Paper - remove passengers logic
             {
-                return true;
+                return 10; // Paper
             }
         } else if ( !( (EntityArrow) entity ).inGround )
         {
-            return true;
+            return 1; // Paper
         }
         // special cases.
         if ( entity instanceof EntityLiving )
         {
             EntityLiving living = (EntityLiving) entity;
-            if ( /*TODO: Missed mapping? living.attackTicks > 0 || */ living.hurtTicks > 0 || living.effects.size() > 0 )
+            if ( living.isClimbing() || living.jumping || living.hurtTicks > 0 || living.effects.size() > 0 ) // Paper
             {
-                return true;
+                return 1; // Paper
             }
-            if ( entity instanceof EntityCreature && ( (EntityCreature) entity ).getGoalTarget() != null )
+            if ( entity instanceof EntityInsentient && ((EntityInsentient) entity ).getGoalTarget() != null) // Paper
             {
-                return true;
+                return 20; // Paper
             }
-            if ( entity instanceof EntityVillager && ( (EntityVillager) entity ).canBreed() )
+            // Paper start
+            if (entity instanceof EntityBee) {
+                EntityBee bee = (EntityBee)entity;
+                BlockPosition movingTarget = bee.getMovingTarget();
+                if (bee.isAngry() ||
+                    (bee.getHivePos() != null && bee.getHivePos().equals(movingTarget)) ||
+                    (bee.getFlowerPos() != null && bee.getFlowerPos().equals(movingTarget))
+                ) {
+                    return 20;
+                }
+            }
+            if ( entity instanceof EntityVillager ) {
+                BehaviorController<EntityVillager> behaviorController = ((EntityVillager) entity).getBehaviorController();
+
+                if (config.villagersActiveForPanic) {
+                    for (Activity activity : VILLAGER_PANIC_IMMUNITIES) {
+                        if (behaviorController.c(activity)) {
+                            return 20*5;
+                        }
+                    }
+                }
+
+                if (config.villagersWorkImmunityAfter > 0 && inactiveFor >= config.villagersWorkImmunityAfter) {
+                    if (behaviorController.c(Activity.WORK)) {
+                        return config.villagersWorkImmunityFor;
+                    }
+                }
+            }
+            if ( entity instanceof EntityLlama && ( (EntityLlama ) entity ).inCaravan() )
             {
-                return true;
+                return 1;
             }
+            // Paper end
             if ( entity instanceof EntityAnimal )
             {
                 EntityAnimal animal = (EntityAnimal) entity;
                 if ( animal.isBaby() || animal.isInLove() )
                 {
-                    return true;
+                    return 5; // Paper
                 }
                 if ( entity instanceof EntitySheep && ( (EntitySheep) entity ).isSheared() )
                 {
-                    return true;
+                    return 1; // Paper
                 }
             }
             if (entity instanceof EntityCreeper && ((EntityCreeper) entity).isIgnited()) { // isExplosive
-                return true;
+                return 20; // Paper
             }
+            // Paper start
+            if (entity instanceof EntityInsentient && ((EntityInsentient) entity).targetSelector.hasTasks() ) {
+                return 0;
+            }
+            if (entity instanceof EntityPillager) {
+                EntityPillager pillager = (EntityPillager) entity;
+                // TODO:?
+            }
+            // Paper end
         }
-        return false;
+        return -1; // Paper
     }
 
     /**
@@ -252,8 +381,19 @@ public class ActivationRange
         if ( !entity.inChunk || entity instanceof EntityFireworks ) {
             return true;
         }
+        // Paper start - special case always immunities
+        // immunize brand new entities, dead entities, and portal scenarios
+        if (entity.defaultActivationState || entity.ticksLived < 20*10 || !entity.isAlive() || entity.inPortal || entity.portalCooldown > 0) {
+            return true;
+        }
+        // immunize leashed entities
+        if (entity instanceof EntityInsentient && ((EntityInsentient)entity).leashHolder instanceof EntityHuman) {
+            return true;
+        }
+        // Paper end
 
-        boolean isActive = entity.activatedTick >= MinecraftServer.currentTick || entity.defaultActivationState;
+        boolean isActive = entity.activatedTick >= MinecraftServer.currentTick;
+        entity.isTemporarilyActive = false; // Paper
 
         // Should this entity tick?
         if ( !isActive )
@@ -261,15 +401,19 @@ public class ActivationRange
             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;
+                // Paper start
+                int immunity = checkEntityImmunities(entity);
+                if (immunity >= 0) {
+                    entity.activatedTick = MinecraftServer.currentTick + immunity;
+                } else {
+                    entity.isTemporarilyActive = true;
                 }
+                // Paper end
                 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 ) )
+        } else if (entity.ticksLived % 4 == 0 && checkEntityImmunities( entity) < 0 ) // Paper
         {
             isActive = false;
         }
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index f0ad5fa235adfd165b8e56be7352568a3b3ae54a..9859e0c964e4d1e7dc7689cb97f40643a8e5cdd7 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -180,13 +180,59 @@ public class SpigotWorldConfig
     public int monsterActivationRange = 32;
     public int raiderActivationRange = 48;
     public int miscActivationRange = 16;
+    // Paper start
+    public int flyingMonsterActivationRange = 32;
+    public int waterActivationRange = 16;
+    public int villagerActivationRange = 32;
+    public int wakeUpInactiveAnimals = 4;
+    public int wakeUpInactiveAnimalsEvery = 60*20;
+    public int wakeUpInactiveAnimalsFor = 5*20;
+    public int wakeUpInactiveMonsters = 8;
+    public int wakeUpInactiveMonstersEvery = 20*20;
+    public int wakeUpInactiveMonstersFor = 5*20;
+    public int wakeUpInactiveVillagers = 4;
+    public int wakeUpInactiveVillagersEvery = 30*20;
+    public int wakeUpInactiveVillagersFor = 5*20;
+    public int wakeUpInactiveFlying = 8;
+    public int wakeUpInactiveFlyingEvery = 10*20;
+    public int wakeUpInactiveFlyingFor = 5*20;
+    public int villagersWorkImmunityAfter = 5*20;
+    public int villagersWorkImmunityFor = 20;
+    public boolean villagersActiveForPanic = true;
+    // Paper end
     public boolean tickInactiveVillagers = true;
     private void activationRange()
     {
+        boolean hasAnimalsConfig = config.getInt("entity-activation-range.animals", animalActivationRange) != animalActivationRange; // Paper
         animalActivationRange = getInt( "entity-activation-range.animals", animalActivationRange );
         monsterActivationRange = getInt( "entity-activation-range.monsters", monsterActivationRange );
         raiderActivationRange = getInt( "entity-activation-range.raiders", raiderActivationRange );
         miscActivationRange = getInt( "entity-activation-range.misc", miscActivationRange );
+        // Paper start
+        waterActivationRange = getInt( "entity-activation-range.water", waterActivationRange );
+        villagerActivationRange = getInt( "entity-activation-range.villagers", hasAnimalsConfig ? animalActivationRange : villagerActivationRange );
+        flyingMonsterActivationRange = getInt( "entity-activation-range.flying-monsters", flyingMonsterActivationRange );
+
+        wakeUpInactiveAnimals = getInt("entity-activation-range.wake-up-inactive.animals-max-per-tick", wakeUpInactiveAnimals);
+        wakeUpInactiveAnimalsEvery = getInt("entity-activation-range.wake-up-inactive.animals-every", wakeUpInactiveAnimalsEvery);
+        wakeUpInactiveAnimalsFor = getInt("entity-activation-range.wake-up-inactive.animals-for", wakeUpInactiveAnimalsFor);
+
+        wakeUpInactiveMonsters = getInt("entity-activation-range.wake-up-inactive.monsters-max-per-tick", wakeUpInactiveMonsters);
+        wakeUpInactiveMonstersEvery = getInt("entity-activation-range.wake-up-inactive.monsters-every", wakeUpInactiveMonstersEvery);
+        wakeUpInactiveMonstersFor = getInt("entity-activation-range.wake-up-inactive.monsters-for", wakeUpInactiveMonstersFor);
+
+        wakeUpInactiveVillagers = getInt("entity-activation-range.wake-up-inactive.villagers-max-per-tick", wakeUpInactiveVillagers);
+        wakeUpInactiveVillagersEvery = getInt("entity-activation-range.wake-up-inactive.villagers-every", wakeUpInactiveVillagersEvery);
+        wakeUpInactiveVillagersFor = getInt("entity-activation-range.wake-up-inactive.villagers-for", wakeUpInactiveVillagersFor);
+
+        wakeUpInactiveFlying = getInt("entity-activation-range.wake-up-inactive.flying-monsters-max-per-tick", wakeUpInactiveFlying);
+        wakeUpInactiveFlyingEvery = getInt("entity-activation-range.wake-up-inactive.flying-monsters-every", wakeUpInactiveFlyingEvery);
+        wakeUpInactiveFlyingFor = getInt("entity-activation-range.wake-up-inactive.flying-monsters-for", wakeUpInactiveFlyingFor);
+
+        villagersWorkImmunityAfter = getInt( "entity-activation-range.villagers-work-immunity-after", villagersWorkImmunityAfter );
+        villagersWorkImmunityFor = getInt( "entity-activation-range.villagers-work-immunity-for", villagersWorkImmunityFor );
+        villagersActiveForPanic = getBoolean( "entity-activation-range.villagers-active-for-panic", villagersActiveForPanic );
+        // Paper end
         tickInactiveVillagers = getBoolean( "entity-activation-range.tick-inactive-villagers", tickInactiveVillagers );
         log( "Entity Activation Range: An " + animalActivationRange + " / Mo " + monsterActivationRange + " / Ra " + raiderActivationRange + " / Mi " + miscActivationRange + " / Tiv " + tickInactiveVillagers );
     }
