Paper/patches/server/0331-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 b10097cd28f0dc360cda9b31e8184ed3a7003780..2d1aa3acd41615b1b2c9cf5751152a56f1f18ec5 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;
@@ -1211,17 +1210,17 @@ 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();
@@ -1232,9 +1231,13 @@ 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()) {
@@ -1242,13 +1245,18 @@ 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();
@@ -1257,8 +1265,17 @@ 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();
 
@@ -1268,6 +1285,7 @@ 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 e1ad7394abdbf938841150e4f7092ac70181ddb0..26a611b8d75513690811fbbd15dc37e6f4a50dd4 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -397,6 +397,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
     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
@@ -969,6 +971,8 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
         } 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;
@@ -981,6 +985,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
                 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 efef5df4cf720058c0b07ef795cfa6a567113811..d330b6d291cd2967358e892ccbc480bb3bd8022d 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -221,6 +221,19 @@ 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 5e9cf929674888b3a143a0691dc6936b304467f1..b5964614823059261c28eb2e998ad54249f07e7b 100644
--- a/src/main/java/net/minecraft/world/entity/PathfinderMob.java
+++ b/src/main/java/net/minecraft/world/entity/PathfinderMob.java
@@ -21,6 +21,7 @@ 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 7153e00a640abfeb134ff1dcb93f363b972a4233..4bbc36404b396500df0d9db380cf223b5897662e 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 0429b927e63ec12f53a6ce1ebe1e64d99bf7e129..c0aa370367856a159412dd141f683b7d51e11c8b 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -227,17 +227,34 @@ 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;
@@ -261,7 +278,7 @@ 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()) {
@@ -272,6 +289,7 @@ 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 3fdec0ff323ac94517f1ab9a13764a8959148127..9e4ab11521b853d0db55b382413c1f49cbff9e9e 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -163,6 +163,12 @@ 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 - add paper world config
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 d5374072a97f791964033d107f023b3cc657b343..3495981419a75efe42bce45a89a32378dd6b8372 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, ActivationRange.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 || living.isFreezing()) // 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 81c76360e8c7389bafd61f38e6782668e8c65d27..50e57486d49694396816122504028e410ebb602d 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 );