From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Tue, 23 Jul 2019 08:28:21 -0500
Subject: [PATCH] Configurable villager brain ticks


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 9a8e08e9a44900ad3899a63992948941abe7c5d8..17eb573debec8e67dab2f5790ba9fc0a1f09a208 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -137,6 +137,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
     }, MemoryModuleType.MEETING_POINT, (entityvillager, villageplacetype) -> {
         return villageplacetype == PoiType.MEETING;
     });
+    private final int brainTickOffset; // Purpur
 
     public Villager(EntityType<? extends Villager> entityType, Level world) {
         this(entityType, world, VillagerType.PLAINS);
@@ -149,6 +150,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
         this.getNavigation().setCanFloat(true);
         this.setCanPickUpLoot(true);
         this.setVillagerData(this.getVillagerData().setType(type).setProfession(VillagerProfession.NONE));
+        this.brainTickOffset = getRandom().nextInt(100); // Purpur
     }
 
     // Purpur start
@@ -267,6 +269,10 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
     protected void customServerAiStep() { mobTick(false); }
     protected void mobTick(boolean inactive) {
         this.level.getProfiler().push("villagerBrain");
+        // Purpur start
+        boolean tick = (level.getGameTime() + brainTickOffset) % level.purpurConfig.villagerBrainTicks == 0;
+        if (((ServerLevel) level).getServer().lagging ? tick : level.purpurConfig.villagerUseBrainTicksOnlyWhenLagging || tick)
+        // Purpur end
         if (!inactive) this.getBrain().tick((ServerLevel) this.level, this); // Paper
         this.level.getProfiler().pop();
         if (this.assignProfessionWhenSpawned) {
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 29de4c4316285b7ddf77c508d098584d2cb365e9..ccd3597d78a12d8e6a3514c0f9cfa2aa31b688f8 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -1071,6 +1071,8 @@ public class PurpurWorldConfig {
     public boolean villagerRidable = false;
     public boolean villagerRidableInWater = false;
     public double villagerMaxHealth = 20.0D;
+    public int villagerBrainTicks = 1;
+    public boolean villagerUseBrainTicksOnlyWhenLagging = true;
     private void villagerSettings() {
         villagerRidable = getBoolean("mobs.villager.ridable", villagerRidable);
         villagerRidableInWater = getBoolean("mobs.villager.ridable-in-water", villagerRidableInWater);
@@ -1080,6 +1082,8 @@ public class PurpurWorldConfig {
             set("mobs.villager.attributes.max_health", oldValue);
         }
         villagerMaxHealth = getDouble("mobs.villager.attributes.max_health", villagerMaxHealth);
+        villagerBrainTicks = getInt("mobs.villager.brain-ticks", villagerBrainTicks);
+        villagerUseBrainTicksOnlyWhenLagging = getBoolean("mobs.villager.use-brain-ticks-only-when-lagging", villagerUseBrainTicksOnlyWhenLagging);
     }
 
     public boolean vindicatorRidable = false;