Paper/patches/server/0337-Entity-Activation-Range-2.0.patch

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

== AT ==
public net.minecraft.world.entity.Entity isInsidePortal
public net.minecraft.world.entity.LivingEntity jumping

diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 0efc377743e93a0120843cab192753d037e88a73..b12e9da3eebda396769b30f4b7e37a78f3bcb060 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2,7 +2,6 @@ package net.minecraft.server.level;
 
 import com.google.common.annotations.VisibleForTesting;
 import co.aikar.timings.TimingHistory; // Paper
-import co.aikar.timings.Timings; // Paper
 import com.google.common.collect.Lists;
 import com.mojang.datafixers.DataFixer;
 import com.mojang.datafixers.util.Pair;
@@ -1186,17 +1185,17 @@ public class ServerLevel extends Level implements WorldGenLevel {
         ++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.tickCount++;
             timer = entity.getType().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.getType().passengerTickTimer.startTiming() : entity.getType().tickTimer.startTiming();
+        final boolean isActive = org.spigotmc.ActivationRange.checkIfActive(entity);
+        timer = isActive ? entity.getType().tickTimer.startTiming() : entity.getType().inactiveTickTimer.startTiming(); // Paper
         try {
         // Paper end - timings
         entity.setOldPosAndRot();
@@ -1207,9 +1206,13 @@ public class ServerLevel extends Level implements WorldGenLevel {
             return BuiltInRegistries.ENTITY_TYPE.getKey(entity.getType()).toString();
         });
         gameprofilerfiller.incrementCounter("tickNonPassenger");
+        if (isActive) { // Paper - EAR 2
+            TimingHistory.activatedEntityTicks++;
         entity.tick();
         entity.postTick(); // CraftBukkit
+        } else { entity.inactiveTick(); } // Paper - EAR 2
         this.getProfiler().pop();
+        } finally { timer.stopTiming(); } // Paper - timings
         Iterator iterator = entity.getPassengers().iterator();
 
         while (iterator.hasNext()) {
@@ -1217,13 +1220,18 @@ public class ServerLevel extends Level implements WorldGenLevel {
 
             this.tickPassenger(entity, entity1);
         }
-        } finally { timer.stopTiming(); } // Paper - timings
+        // } finally { timer.stopTiming(); } // Paper - timings - move up
 
     }
 
     private void tickPassenger(Entity vehicle, Entity passenger) {
         if (!passenger.isRemoved() && passenger.getVehicle() == vehicle) {
             if (passenger instanceof Player || this.entityTickList.contains(passenger)) {
+                // Paper - EAR 2
+                final boolean isActive = org.spigotmc.ActivationRange.checkIfActive(passenger);
+                co.aikar.timings.Timing timer = isActive ? passenger.getType().passengerTickTimer.startTiming() : passenger.getType().passengerInactiveTickTimer.startTiming(); // Paper
+                try {
+                // Paper end
                 passenger.setOldPosAndRot();
                 ++passenger.tickCount;
                 ProfilerFiller gameprofilerfiller = this.getProfiler();
@@ -1232,8 +1240,17 @@ public class ServerLevel extends Level implements WorldGenLevel {
                     return BuiltInRegistries.ENTITY_TYPE.getKey(passenger.getType()).toString();
                 });
                 gameprofilerfiller.incrementCounter("tickPassenger");
+                // Paper start - EAR 2
+                if (isActive) {
                 passenger.rideTick();
                 passenger.postTick(); // CraftBukkit
+                } else {
+                    passenger.setDeltaMovement(Vec3.ZERO);
+                    passenger.inactiveTick();
+                    // copied from inside of if (isPassenger()) of passengerTick, but that ifPassenger is unnecessary
+                    vehicle.positionRider(passenger);
+                }
+                // Paper end - EAR 2
                 gameprofilerfiller.pop();
                 Iterator iterator = passenger.getPassengers().iterator();
 
@@ -1243,6 +1260,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
                     this.tickPassenger(passenger, entity2);
                 }
 
+            } finally { timer.stopTiming(); }// Paper - EAR2 timings
             }
         } else {
             passenger.stopRiding();
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 7be82f903e5f65d00b68dc7ee7c1cb4b2be1dc8d..e35a8e118db04143b29b4c8e56b6fae277e18ca3 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -390,6 +390,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
     public void inactiveTick() { }
     // Spigot end
     // Paper start
+    public long activatedImmunityTick = Integer.MIN_VALUE; // Paper
+    public boolean isTemporarilyActive = false; // Paper
     protected int numCollisions = 0; // Paper
     public boolean spawnedViaMobSpawner; // Paper - Yes this name is similar to above, upstream took the better one
     @javax.annotation.Nullable
@@ -962,6 +964,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
         } else {
             this.wasOnFire = this.isOnFire();
             if (movementType == MoverType.PISTON) {
+                this.activatedTick = Math.max(this.activatedTick, MinecraftServer.currentTick + 20); // Paper
+                this.activatedImmunityTick = Math.max(this.activatedImmunityTick, MinecraftServer.currentTick + 20);   // Paper
                 movement = this.limitPistonMovement(movement);
                 if (movement.equals(Vec3.ZERO)) {
                     return;
@@ -974,6 +978,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
                 this.stuckSpeedMultiplier = Vec3.ZERO;
                 this.setDeltaMovement(Vec3.ZERO);
             }
+            // Paper start - ignore movement changes while inactive.
+            if (isTemporarilyActive && !(this instanceof ItemEntity || this instanceof net.minecraft.world.entity.vehicle.AbstractMinecart) && movement == getDeltaMovement() && movementType == MoverType.SELF) {
+                setDeltaMovement(Vec3.ZERO);
+                this.level.getProfiler().pop();
+                return;
+            }
+            // Paper end
 
             movement = this.maybeBackOffFromEdge(movement, movementType);
             Vec3 vec3d1 = this.collide(movement);
diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index d7f24c26b0981184f43a16a27a0c5d5a931d4de3..76b2772fb79ebb4e0712d1e501c37fd14ea2fa62 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -218,6 +218,19 @@ public abstract class Mob extends LivingEntity implements Targeting {
         return this.lookControl;
     }
 
+    // Paper start
+    @Override
+    public void inactiveTick() {
+        super.inactiveTick();
+        if (this.goalSelector.inactiveTick()) {
+            this.goalSelector.tick();
+        }
+        if (this.targetSelector.inactiveTick()) {
+            this.targetSelector.tick();
+        }
+    }
+    // Paper end
+
     public MoveControl getMoveControl() {
         Entity entity = this.getControlledVehicle();
 
diff --git a/src/main/java/net/minecraft/world/entity/PathfinderMob.java b/src/main/java/net/minecraft/world/entity/PathfinderMob.java
index d8ce7ea5fcb2785435ec1f530cb6e7114c01e4b7..5f3a14ca456e65894e824864ccf3cd5fabc9c6bd 100644
--- a/src/main/java/net/minecraft/world/entity/PathfinderMob.java
+++ b/src/main/java/net/minecraft/world/entity/PathfinderMob.java
@@ -19,6 +19,7 @@ public abstract class PathfinderMob extends Mob {
     }
 
     public org.bukkit.craftbukkit.entity.CraftCreature getBukkitCreature() { return (org.bukkit.craftbukkit.entity.CraftCreature) super.getBukkitEntity(); } // Paper
+    public BlockPos movingTarget = null; public BlockPos getMovingTarget() { return movingTarget; } // Paper
 
     public float getWalkTargetValue(BlockPos pos) {
         return this.getWalkTargetValue(pos, this.level());
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/GoalSelector.java b/src/main/java/net/minecraft/world/entity/ai/goal/GoalSelector.java
index 07c1ca01c38d5d7d0a95ad5004b5df9f4a222935..e5995d0db5dcfba59a873ff439601894fdacd556 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/GoalSelector.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/GoalSelector.java
@@ -33,6 +33,7 @@ public class GoalSelector {
     private final EnumSet<Goal.Flag> disabledFlags = EnumSet.noneOf(Goal.Flag.class);
     private int tickCount;
     private int newGoalRate = 3;
+    private int curRate;
 
     public GoalSelector(Supplier<ProfilerFiller> profiler) {
         this.profiler = profiler;
@@ -49,6 +50,20 @@ public class GoalSelector {
         });
     }
 
+    // Paper start
+    public boolean inactiveTick() {
+        this.curRate++;
+        return this.curRate % this.newGoalRate == 0;
+    }
+    public boolean hasTasks() {
+        for (WrappedGoal task : this.availableGoals) {
+            if (task.isRunning()) {
+                return true;
+            }
+        }
+        return false;
+    }
+    // Paper end
     public void removeGoal(Goal goal) {
         this.availableGoals.stream().filter((wrappedGoal) -> {
             return wrappedGoal.getGoal() == goal;
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
index d27e5f9dac4703b839ab8444f6b54bf54d58af86..34f319ad09276c6f68dde449c79351de0d7d86f5 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
@@ -14,7 +14,7 @@ public abstract class MoveToBlockGoal extends Goal {
     protected int nextStartTick;
     protected int tryTicks;
     private int maxStayTicks;
-    protected BlockPos blockPos = BlockPos.ZERO; @Deprecated public final BlockPos getTargetPosition() { return this.blockPos; } // Paper - OBFHELPER
+    protected BlockPos blockPos = BlockPos.ZERO; @Deprecated public final BlockPos getTargetPosition() { return this.blockPos; } @Deprecated public void setTargetPosition(BlockPos pos) { this.blockPos = pos; mob.movingTarget = pos != BlockPos.ZERO ? pos : null; } // Paper - OBFHELPER
     private boolean reachedTarget;
     private final int searchRange;
     private final int verticalSearchRange;
@@ -23,6 +23,13 @@ public abstract class MoveToBlockGoal extends Goal {
     public MoveToBlockGoal(PathfinderMob mob, double speed, int range) {
         this(mob, speed, range, 1);
     }
+    // Paper start - activation range improvements
+    @Override
+    public void stop() {
+        super.stop();
+        setTargetPosition(BlockPos.ZERO);
+    }
+    // Paper end
 
     public MoveToBlockGoal(PathfinderMob mob, double speed, int range, int maxYDifference) {
         this.mob = mob;
@@ -114,6 +121,7 @@ public abstract class MoveToBlockGoal extends Goal {
                         mutableBlockPos.setWithOffset(blockPos, m, k - 1, n);
                         if (this.mob.isWithinRestriction(mutableBlockPos) && this.isValidTarget(this.mob.level(), mutableBlockPos)) {
                             this.blockPos = mutableBlockPos;
+                            setTargetPosition(mutableBlockPos.immutable()); // Paper
                             return true;
                         }
                     }
diff --git a/src/main/java/net/minecraft/world/entity/npc/Villager.java b/src/main/java/net/minecraft/world/entity/npc/Villager.java
index 73a5750dd47cf8869070f92594cfb926193c8761..1e775178f346ef3d2f121e539ba81a75c8a37c36 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -226,17 +226,34 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
     @Override
     public void inactiveTick() {
         // SPIGOT-3874, SPIGOT-3894, SPIGOT-3846, SPIGOT-5286 :(
-        if (this.level().spigotConfig.tickInactiveVillagers && this.isEffectiveAi()) {
-            this.customServerAiStep();
+        // Paper start
+        if (this.getUnhappyCounter() > 0) {
+            this.setUnhappyCounter(this.getUnhappyCounter() - 1);
         }
+        if (this.isEffectiveAi()) {
+            if (this.level().spigotConfig.tickInactiveVillagers) {
+                this.customServerAiStep();
+            } else {
+                this.customServerAiStep(true);
+            }
+        }
+        maybeDecayGossip();
+        // Paper end
+
         super.inactiveTick();
     }
     // Spigot End
 
     @Override
+    @Deprecated // Paper
     protected void customServerAiStep() {
+        // Paper start
+        this.customServerAiStep(false);
+    }
+    protected void customServerAiStep(final boolean inactive) {
+        // Paper end
         this.level().getProfiler().push("villagerBrain");
-        this.getBrain().tick((ServerLevel) this.level(), this);
+        if (!inactive) this.getBrain().tick((ServerLevel) this.level(), this); // Paper
         this.level().getProfiler().pop();
         if (this.assignProfessionWhenSpawned) {
             this.assignProfessionWhenSpawned = false;
@@ -260,7 +277,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
             this.lastTradedPlayer = null;
         }
 
-        if (!this.isNoAi() && this.random.nextInt(100) == 0) {
+        if (!inactive && !this.isNoAi() && this.random.nextInt(100) == 0) { // Paper
             Raid raid = ((ServerLevel) this.level()).getRaidAt(this.blockPosition());
 
             if (raid != null && raid.isActive() && !raid.isOver()) {
@@ -271,6 +288,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
         if (this.getVillagerData().getProfession() == VillagerProfession.NONE && this.isTrading()) {
             this.stopTrading();
         }
+        if (inactive) return; // Paper
 
         super.customServerAiStep();
     }
diff --git a/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java b/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
index b149e8bcac034bb3fc118a9adcb0de45e18ed5e9..fc35cfc9d045f3e5b6a50af1d0ba83b6e322091f 100644
--- a/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
+++ b/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
@@ -52,6 +52,7 @@ public class MinecartHopper extends AbstractMinecartContainer implements Hopper
         if (bl != this.isEnabled()) {
             this.setEnabled(bl);
         }
+        this.immunize();  // Paper
 
     }
 
@@ -89,10 +90,12 @@ public class MinecartHopper extends AbstractMinecartContainer implements Hopper
 
     public boolean suckInItems() {
         if (HopperBlockEntity.suckInItems(this.level(), this)) {
+            this.immunize();  // Paper
             return true;
         } else {
             for(ItemEntity itemEntity : this.level().getEntitiesOfClass(ItemEntity.class, this.getBoundingBox().inflate(0.25D, 0.0D, 0.25D), EntitySelector.ENTITY_STILL_ALIVE)) {
                 if (HopperBlockEntity.addItem(this, itemEntity)) {
+                    this.immunize();  // Paper
                     return true;
                 }
             }
@@ -122,4 +125,11 @@ public class MinecartHopper extends AbstractMinecartContainer implements Hopper
     public AbstractContainerMenu createMenu(int syncId, Inventory playerInventory) {
         return new HopperMenu(syncId, playerInventory, this);
     }
+
+    // Paper start
+    public void immunize() {
+        this.activatedImmunityTick = Math.max(this.activatedImmunityTick, net.minecraft.server.MinecraftServer.currentTick + 20);
+    }
+    // Paper end
+
 }
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 0fcc864953b35389e01868ed6b80be2132e24f94..9d1c3859e54af9b42665e7ca2fc50e83e7784148 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -160,6 +160,12 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
     public Map<BlockPos, BlockEntity> capturedTileEntities = new HashMap<>();
     public List<ItemEntity> captureDrops;
     public final it.unimi.dsi.fastutil.objects.Object2LongOpenHashMap<SpawnCategory> ticksPerSpawnCategory = new it.unimi.dsi.fastutil.objects.Object2LongOpenHashMap<>();
+    // 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
     // Paper start
diff --git a/src/main/java/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java b/src/main/java/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
index 45f55c79a9d105f732054d61c4cf83eb5db49762..17a6327ab7b26dfab38881bbc0689b0b25f8f025 100644
--- a/src/main/java/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/piston/PistonMovingBlockEntity.java
@@ -143,6 +143,10 @@ public class PistonMovingBlockEntity extends BlockEntity {
                                 }
 
                                 entity.setDeltaMovement(e, g, h);
+                                // Paper - EAR items stuck in in slime pushed by a piston
+                                entity.activatedTick = Math.max(entity.activatedTick, net.minecraft.server.MinecraftServer.currentTick + 10);
+                                entity.activatedImmunityTick = Math.max(entity.activatedImmunityTick, net.minecraft.server.MinecraftServer.currentTick + 10);
+                                // Paper end
                                 break;
                             }
                         }
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
index 305d9772f2af22e8bdf73235cdb15ea01ac2c3b3..50ddcd7ee9c3ffe7549361f942df01b8ef078932 100644
--- a/src/main/java/org/spigotmc/ActivationRange.java
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -1,39 +1,52 @@
 package org.spigotmc;
 
+import net.minecraft.core.BlockPos;
 import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerChunkCache;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.ExperienceOrb;
+import net.minecraft.world.entity.FlyingMob;
 import net.minecraft.world.entity.LightningBolt;
 import net.minecraft.world.entity.LivingEntity;
+import net.minecraft.world.entity.Mob;
 import net.minecraft.world.entity.PathfinderMob;
+import net.minecraft.world.entity.ai.Brain;
 import net.minecraft.world.entity.ambient.AmbientCreature;
 import net.minecraft.world.entity.animal.Animal;
+import net.minecraft.world.entity.animal.Bee;
 import net.minecraft.world.entity.animal.Sheep;
+import net.minecraft.world.entity.animal.WaterAnimal;
+import net.minecraft.world.entity.animal.horse.Llama;
 import net.minecraft.world.entity.boss.EnderDragonPart;
 import net.minecraft.world.entity.boss.enderdragon.EndCrystal;
 import net.minecraft.world.entity.boss.enderdragon.EnderDragon;
 import net.minecraft.world.entity.boss.wither.WitherBoss;
 import net.minecraft.world.entity.item.PrimedTnt;
 import net.minecraft.world.entity.monster.Creeper;
-import net.minecraft.world.entity.monster.Monster;
-import net.minecraft.world.entity.monster.Slime;
+import net.minecraft.world.entity.monster.Enemy;
+import net.minecraft.world.entity.monster.Pillager;
 import net.minecraft.world.entity.npc.Villager;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.entity.projectile.AbstractArrow;
 import net.minecraft.world.entity.projectile.AbstractHurtingProjectile;
+import net.minecraft.world.entity.projectile.EyeOfEnder;
 import net.minecraft.world.entity.projectile.FireworkRocketEntity;
 import net.minecraft.world.entity.projectile.ThrowableProjectile;
 import net.minecraft.world.entity.projectile.ThrownTrident;
 import net.minecraft.world.entity.raid.Raider;
+import co.aikar.timings.MinecraftTimings;
+import net.minecraft.world.entity.schedule.Activity;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.phys.AABB;
-import co.aikar.timings.MinecraftTimings;
 
 public class ActivationRange
 {
 
     public enum ActivationType
     {
+        WATER, // Paper
+        FLYING_MONSTER, // Paper
+        VILLAGER, // Paper
         MONSTER,
         ANIMAL,
         RAIDER,
@@ -41,6 +54,43 @@ public class ActivationRange
 
         AABB boundingBox = new AABB( 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) {
+        Level world = entity.level();
+        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 AABB maxBB = new AABB( 0, 0, 0, 0, 0, 0 );
 
@@ -53,10 +103,13 @@ public class ActivationRange
      */
     public static ActivationType initializeEntityActivationType(Entity entity)
     {
+        if (entity instanceof WaterAnimal) { return ActivationType.WATER; } // Paper
+        else if (entity instanceof Villager) { return ActivationType.VILLAGER; } // Paper
+        else if (entity instanceof FlyingMob && entity instanceof Enemy) { return ActivationType.FLYING_MONSTER; } // Paper - doing & Monster incase Flying no longer includes monster in future
         if ( entity instanceof Raider )
         {
             return ActivationType.RAIDER;
-        } else if ( entity instanceof Monster || entity instanceof Slime )
+        } else if ( entity instanceof Enemy ) // Paper - correct monster check
         {
             return ActivationType.MONSTER;
         } else if ( entity instanceof PathfinderMob || entity instanceof AmbientCreature )
@@ -77,10 +130,14 @@ 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 EyeOfEnder // Paper
                 || entity instanceof Player
                 || entity instanceof ThrowableProjectile
                 || entity instanceof EnderDragon
@@ -113,10 +170,25 @@ 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 ServerChunkCache chunkProvider = (ServerChunkCache) world.getChunkSource();
+        // 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.simulationDistance << 4 ) - 8, maxRange );
 
         for ( Player player : world.players() )
@@ -127,11 +199,17 @@ public class ActivationRange
                 continue;
             }
 
-            ActivationRange.maxBB = player.getBoundingBox().inflate( maxRange, 256, maxRange );
-            ActivationType.MISC.boundingBox = player.getBoundingBox().inflate( miscActivationRange, 256, miscActivationRange );
-            ActivationType.RAIDER.boundingBox = player.getBoundingBox().inflate( raiderActivationRange, 256, raiderActivationRange );
-            ActivationType.ANIMAL.boundingBox = player.getBoundingBox().inflate( animalActivationRange, 256, animalActivationRange );
-            ActivationType.MONSTER.boundingBox = player.getBoundingBox().inflate( monsterActivationRange, 256, monsterActivationRange );
+            // Paper start
+            int worldHeight = world.getHeight();
+            ActivationRange.maxBB = player.getBoundingBox().inflate( maxRange, worldHeight, maxRange );
+            ActivationType.MISC.boundingBox = player.getBoundingBox().inflate( miscActivationRange, worldHeight, miscActivationRange );
+            ActivationType.RAIDER.boundingBox = player.getBoundingBox().inflate( raiderActivationRange, worldHeight, raiderActivationRange );
+            ActivationType.ANIMAL.boundingBox = player.getBoundingBox().inflate( animalActivationRange, worldHeight, animalActivationRange );
+            ActivationType.MONSTER.boundingBox = player.getBoundingBox().inflate( monsterActivationRange, worldHeight, monsterActivationRange );
+            ActivationType.WATER.boundingBox = player.getBoundingBox().inflate( waterActivationRange, worldHeight, waterActivationRange );
+            ActivationType.FLYING_MONSTER.boundingBox = player.getBoundingBox().inflate( flyingActivationRange, worldHeight, flyingActivationRange );
+            ActivationType.VILLAGER.boundingBox = player.getBoundingBox().inflate( villagerActivationRange, worldHeight, villagerActivationRange );
+            // Paper end
 
             // Paper start
             java.util.List<Entity> entities = world.getEntities((Entity)null, maxBB, null);
@@ -172,60 +250,118 @@ 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.level().spigotConfig;
+        int inactiveWakeUpImmunity = checkInactiveWakeup(entity);
+        if (inactiveWakeUpImmunity > -1) {
+            return inactiveWakeUpImmunity;
+        }
+        if (entity.getRemainingFireTicks() > 0) {
+            return 2;
+        }
+        if (entity.activatedImmunityTick >= MinecraftServer.currentTick) {
+            return 1;
+        }
+        long inactiveFor = MinecraftServer.currentTick - entity.activatedTick;
+        // Paper end
         // quick checks.
-        if ( entity.wasTouchingWater || entity.getRemainingFireTicks() > 0 )
+        if ( (entity.activationType != ActivationType.WATER && entity.wasTouchingWater && entity.isPushedByFluid()) ) // Paper
         {
-            return true;
+            return 100; // Paper
+        }
+        // Paper start
+        if ( !entity.onGround() || entity.getDeltaMovement().horizontalDistanceSqr() > 9.999999747378752E-6D )
+        {
+            return 100;
         }
+        // Paper end
         if ( !( entity instanceof AbstractArrow ) )
         {
-            if ( !entity.onGround() || !entity.passengers.isEmpty() || entity.isPassenger() )
+            if ( (!entity.onGround() && !(entity instanceof FlyingMob)) ) // Paper - remove passengers logic
             {
-                return true;
+                return 10; // Paper
             }
         } else if ( !( (AbstractArrow) entity ).inGround )
         {
-            return true;
+            return 1; // Paper
         }
         // special cases.
         if ( entity instanceof LivingEntity )
         {
             LivingEntity living = (LivingEntity) entity;
-            if ( /*TODO: Missed mapping? living.attackTicks > 0 || */ living.hurtTime > 0 || living.activeEffects.size() > 0 )
+            if ( living.onClimbable() || living.jumping || living.hurtTime > 0 || living.activeEffects.size() > 0 ) // Paper
             {
-                return true;
+                return 1; // Paper
             }
-            if ( entity instanceof PathfinderMob && ( (PathfinderMob) entity ).getTarget() != null )
+            if ( entity instanceof Mob && ((Mob) entity ).getTarget() != null) // Paper
             {
-                return true;
+                return 20; // Paper
+            }
+            // Paper start
+            if (entity instanceof Bee) {
+                Bee bee = (Bee)entity;
+                BlockPos movingTarget = bee.getMovingTarget();
+                if (bee.isAngry() ||
+                    (bee.getHivePos() != null && bee.getHivePos().equals(movingTarget)) ||
+                    (bee.getSavedFlowerPos() != null && bee.getSavedFlowerPos().equals(movingTarget))
+                ) {
+                    return 20;
+                }
+            }
+            if ( entity instanceof Villager ) {
+                Brain<Villager> behaviorController = ((Villager) entity).getBrain();
+
+                if (config.villagersActiveForPanic) {
+                    for (Activity activity : VILLAGER_PANIC_IMMUNITIES) {
+                        if (behaviorController.isActive(activity)) {
+                            return 20*5;
+                        }
+                    }
+                }
+
+                if (config.villagersWorkImmunityAfter > 0 && inactiveFor >= config.villagersWorkImmunityAfter) {
+                    if (behaviorController.isActive(Activity.WORK)) {
+                        return config.villagersWorkImmunityFor;
+                    }
+                }
             }
-            if ( entity instanceof Villager && ( (Villager) entity ).canBreed() )
+            if ( entity instanceof Llama && ( (Llama) entity ).inCaravan() )
             {
-                return true;
+                return 1;
             }
+            // Paper end
             if ( entity instanceof Animal )
             {
                 Animal animal = (Animal) entity;
                 if ( animal.isBaby() || animal.isInLove() )
                 {
-                    return true;
+                    return 5; // Paper
                 }
                 if ( entity instanceof Sheep && ( (Sheep) entity ).isSheared() )
                 {
-                    return true;
+                    return 1; // Paper
                 }
             }
             if (entity instanceof Creeper && ((Creeper) entity).isIgnited()) { // isExplosive
-                return true;
+                return 20; // Paper
+            }
+            // Paper start
+            if (entity instanceof Mob && ((Mob) entity).targetSelector.hasTasks() ) {
+                return 0;
             }
+            if (entity instanceof Pillager) {
+                Pillager pillager = (Pillager) entity;
+                // TODO:?
+            }
+            // Paper end
         }
         // SPIGOT-6644: Otherwise the target refresh tick will be missed
         if (entity instanceof ExperienceOrb) {
-            return true;
+            return 20; // Paper
         }
-        return false;
+        return -1; // Paper
     }
 
     /**
@@ -240,8 +376,19 @@ public class ActivationRange
         if ( entity instanceof FireworkRocketEntity ) {
             return true;
         }
+        // Paper start - special case always immunities
+        // immunize brand new entities, dead entities, and portal scenarios
+        if (entity.defaultActivationState || entity.tickCount < 20*10 || !entity.isAlive() || entity.isInsidePortal || entity.portalCooldown > 0) {
+            return true;
+        }
+        // immunize leashed entities
+        if (entity instanceof Mob && ((Mob)entity).getLeashHolder() instanceof Player) {
+            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 )
@@ -249,15 +396,19 @@ public class ActivationRange
             if ( ( MinecraftServer.currentTick - entity.activatedTick - 1 ) % 20 == 0 )
             {
                 // Check immunities every 20 ticks.
-                if ( ActivationRange.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.tickCount + entity.getId()) % 4 == 0 && !ActivationRange.checkEntityImmunities( entity ) ) // Paper - Ensure checking item movement is offset from Spigot's entity activation range check
+        } else if ( (entity.tickCount + entity.getId()) % 4 == 0 && ActivationRange.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 e873a311e2918e1cb72f190e14d088a3ed540aa8..77698b0555c5930645659b4af061c3f428bf8f65 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -205,14 +205,60 @@ 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;
     public boolean ignoreSpectatorActivation = false;
     private void activationRange()
     {
+        boolean hasAnimalsConfig = config.getInt("entity-activation-range.animals", this.animalActivationRange) != this.animalActivationRange; // Paper
         this.animalActivationRange = this.getInt( "entity-activation-range.animals", this.animalActivationRange );
         this.monsterActivationRange = this.getInt( "entity-activation-range.monsters", this.monsterActivationRange );
         this.raiderActivationRange = this.getInt( "entity-activation-range.raiders", this.raiderActivationRange );
         this.miscActivationRange = this.getInt( "entity-activation-range.misc", this.miscActivationRange );
+        // Paper start
+        this.waterActivationRange = this.getInt( "entity-activation-range.water", this.waterActivationRange );
+        this.villagerActivationRange = this.getInt( "entity-activation-range.villagers", hasAnimalsConfig ? this.animalActivationRange : this.villagerActivationRange );
+        this.flyingMonsterActivationRange = this.getInt( "entity-activation-range.flying-monsters", this.flyingMonsterActivationRange );
+
+        this.wakeUpInactiveAnimals = this.getInt("entity-activation-range.wake-up-inactive.animals-max-per-tick", this.wakeUpInactiveAnimals);
+        this.wakeUpInactiveAnimalsEvery = this.getInt("entity-activation-range.wake-up-inactive.animals-every", this.wakeUpInactiveAnimalsEvery);
+        this.wakeUpInactiveAnimalsFor = this.getInt("entity-activation-range.wake-up-inactive.animals-for", this.wakeUpInactiveAnimalsFor);
+
+        this.wakeUpInactiveMonsters = this.getInt("entity-activation-range.wake-up-inactive.monsters-max-per-tick", this.wakeUpInactiveMonsters);
+        this.wakeUpInactiveMonstersEvery = this.getInt("entity-activation-range.wake-up-inactive.monsters-every", this.wakeUpInactiveMonstersEvery);
+        this.wakeUpInactiveMonstersFor = this.getInt("entity-activation-range.wake-up-inactive.monsters-for", this.wakeUpInactiveMonstersFor);
+
+        this.wakeUpInactiveVillagers = this.getInt("entity-activation-range.wake-up-inactive.villagers-max-per-tick", this.wakeUpInactiveVillagers);
+        this.wakeUpInactiveVillagersEvery = this.getInt("entity-activation-range.wake-up-inactive.villagers-every", this.wakeUpInactiveVillagersEvery);
+        this.wakeUpInactiveVillagersFor = this.getInt("entity-activation-range.wake-up-inactive.villagers-for", this.wakeUpInactiveVillagersFor);
+
+        this.wakeUpInactiveFlying = this.getInt("entity-activation-range.wake-up-inactive.flying-monsters-max-per-tick", this.wakeUpInactiveFlying);
+        this.wakeUpInactiveFlyingEvery = this.getInt("entity-activation-range.wake-up-inactive.flying-monsters-every", this.wakeUpInactiveFlyingEvery);
+        this.wakeUpInactiveFlyingFor = this.getInt("entity-activation-range.wake-up-inactive.flying-monsters-for", this.wakeUpInactiveFlyingFor);
+
+        this.villagersWorkImmunityAfter = this.getInt( "entity-activation-range.villagers-work-immunity-after", this.villagersWorkImmunityAfter );
+        this.villagersWorkImmunityFor = this.getInt( "entity-activation-range.villagers-work-immunity-for", this.villagersWorkImmunityFor );
+        this.villagersActiveForPanic = this.getBoolean( "entity-activation-range.villagers-active-for-panic", this.villagersActiveForPanic );
+        // Paper end
         this.tickInactiveVillagers = this.getBoolean( "entity-activation-range.tick-inactive-villagers", this.tickInactiveVillagers );
         this.ignoreSpectatorActivation = this.getBoolean( "entity-activation-range.ignore-spectators", this.ignoreSpectatorActivation );
         this.log( "Entity Activation Range: An " + this.animalActivationRange + " / Mo " + this.monsterActivationRange + " / Ra " + this.raiderActivationRange + " / Mi " + this.miscActivationRange + " / Tiv " + this.tickInactiveVillagers + " / Isa " + this.ignoreSpectatorActivation );