Entity Activation Range

This feature gives 3 new configurable ranges that if an entity of the matching type is outside of this radius of any player, will tick at 5% of its normal rate.

This will drastically cut down on tick timings for entities that are not in range of a user to actually be "used".
This change can have dramatic impact on gameplay if configured too low. Balance according to your servers desired gameplay.

By: Aikar <aikar@aikar.co>

paper-server/patches/sources/net/minecraft/world/entity/AreaEffectCloud.java.patch

@@ -22,7 +22,27 @@
      @Nullable
      public UUID ownerUUID;
  
-@@ -200,7 +206,7 @@
+@@ -145,7 +151,19 @@
+         this.duration = duration;
+     }
+ 
++    // Spigot start - copied from below
+     @Override
++    public void inactiveTick() {
++        super.inactiveTick();
++
++        if (this.tickCount >= this.waitTime + this.duration) {
++            this.discard(EntityRemoveEvent.Cause.DESPAWN); // CraftBukkit - add Bukkit remove cause
++            return;
++        }
++    }
++    // Spigot end
++
++    @Override
+     public void tick() {
+         super.tick();
+         Level world = this.level();
+@@ -200,7 +218,7 @@
  
      private void serverTick(ServerLevel world) {
          if (this.tickCount >= this.waitTime + this.duration) {
@@ -31,7 +51,7 @@
          } else {
              boolean flag = this.isWaiting();
              boolean flag1 = this.tickCount < this.waitTime;
-@@ -215,7 +221,7 @@
+@@ -215,7 +233,7 @@
                  if (this.radiusPerTick != 0.0F) {
                      f += this.radiusPerTick;
                      if (f < 0.5F) {
@@ -40,7 +60,7 @@
                          return;
                      }
  
-@@ -244,16 +250,17 @@
+@@ -244,16 +262,17 @@
                          }
  
                          list.addAll(this.potionContents.customEffects());
@@ -61,7 +81,7 @@
  
                                      Objects.requireNonNull(entityliving);
                                      if (!stream.noneMatch(entityliving::canBeAffected)) {
-@@ -262,6 +269,19 @@
+@@ -262,6 +281,19 @@
                                          double d2 = d0 * d0 + d1 * d1;
  
                                          if (d2 <= (double) (f * f)) {
@@ -81,7 +101,7 @@
                                              this.victims.put(entityliving, this.tickCount + this.reapplicationDelay);
                                              Iterator iterator2 = list.iterator();
  
-@@ -271,14 +291,14 @@
+@@ -271,14 +303,14 @@
                                                  if (((MobEffect) mobeffect1.getEffect().value()).isInstantenous()) {
                                                      ((MobEffect) mobeffect1.getEffect().value()).applyInstantenousEffect(world, this, this.getOwner(), entityliving, mobeffect1.getAmplifier(), 0.5D);
                                                  } else {
@@ -98,7 +118,7 @@
                                                      return;
                                                  }
  
-@@ -288,7 +308,7 @@
+@@ -288,7 +320,7 @@
                                              if (this.durationOnUse != 0) {
                                                  this.duration += this.durationOnUse;
                                                  if (this.duration <= 0) {
@@ -107,7 +127,7 @@
                                                      return;
                                                  }
                                              }
-@@ -336,14 +356,14 @@
+@@ -336,14 +368,14 @@
          this.waitTime = waitTime;
      }
  
@@ -124,7 +144,7 @@
          if (this.owner != null && !this.owner.isRemoved()) {
              return this.owner;
          } else {
-@@ -353,10 +373,10 @@
+@@ -353,10 +385,10 @@
                  if (world instanceof ServerLevel) {
                      ServerLevel worldserver = (ServerLevel) world;
                      Entity entity = worldserver.getEntity(this.ownerUUID);