From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 29 Nov 2019 22:10:12 -0600
Subject: [PATCH] Villagers follow emerald blocks


diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/TemptGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/TemptGoal.java
index 30ef9d0a431b393b7238e497d16e8013f90036ef..90f8434100893d577544f7f5fbbc4503223390c0 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/TemptGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/TemptGoal.java
@@ -60,7 +60,7 @@ public class TemptGoal extends Goal {
     }
 
     private boolean shouldFollow(LivingEntity entity) {
-        return this.items.test(entity.getMainHandItem()) || this.items.test(entity.getOffhandItem());
+        return (this.items.test(entity.getMainHandItem()) || this.items.test(entity.getOffhandItem())) && (!(this.mob instanceof net.minecraft.world.entity.npc.Villager villager) || !villager.isSleeping()); // Purpur Fix #512
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
index c75fa3274dedfafa11b94704695a2313f11c22cc..f22ec35a7960bbc2f205d972dbe78d87eb9a7e25 100644
--- a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
@@ -43,6 +43,7 @@ import org.bukkit.event.entity.VillagerAcquireTradeEvent;
 // CraftBukkit end
 
 public abstract class AbstractVillager extends AgeableMob implements InventoryCarrier, Npc, Merchant {
+    static final net.minecraft.world.item.crafting.Ingredient TEMPT_ITEMS = net.minecraft.world.item.crafting.Ingredient.of(net.minecraft.world.level.block.Blocks.EMERALD_BLOCK.asItem()); // Purpur
 
     // CraftBukkit start
     private CraftMerchant craftMerchant;
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 698276aaa1f5bef4dcdd7a64009737086326c9ad..a85834190f25b6b5cecb4524e2e05898980811d2 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -173,6 +173,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
     @Override
     protected void registerGoals() {
         this.goalSelector.addGoal(0, new net.pl3x.purpur.entity.ai.HasRider(this));
+        if (level.purpurConfig.villagerFollowEmeraldBlock) this.goalSelector.addGoal(3, new net.minecraft.world.entity.ai.goal.TemptGoal(this, 1.0D, TEMPT_ITEMS, false));
     }
 
     @Override
diff --git a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
index 0bcfece84ac11f04671ed38a99b31da9f8b03858..2f0bcf917af26fb7628bda134b650a8b296091ea 100644
--- a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
+++ b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
@@ -104,6 +104,7 @@ public class WanderingTrader extends net.minecraft.world.entity.npc.AbstractVill
         this.goalSelector.addGoal(1, new PanicGoal(this, 0.5D));
         this.goalSelector.addGoal(1, new LookAtTradingPlayerGoal(this));
         this.goalSelector.addGoal(2, new WanderingTrader.WanderToPositionGoal(this, 2.0D, 0.35D));
+        if (level.purpurConfig.wanderingTraderFollowEmeraldBlock) this.goalSelector.addGoal(3, new net.minecraft.world.entity.ai.goal.TemptGoal(this, 1.0D, TEMPT_ITEMS, false)); // Purpur
         this.goalSelector.addGoal(4, new MoveTowardsRestrictionGoal(this, 0.35D));
         this.goalSelector.addGoal(8, new WaterAvoidingRandomStrollGoal(this, 0.35D));
         this.goalSelector.addGoal(9, new InteractGoal(this, Player.class, 3.0F, 1.0F));
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index cd77b51e3cc64f34e0f1cb163c17d2f3bf054880..714ad964c90d8fb8244787899be1338c8ab445f8 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -1248,6 +1248,7 @@ public class PurpurWorldConfig {
     public double villagerMaxHealth = 20.0D;
     public int villagerBrainTicks = 1;
     public boolean villagerUseBrainTicksOnlyWhenLagging = true;
+    public boolean villagerFollowEmeraldBlock = false;
     private void villagerSettings() {
         villagerRidable = getBoolean("mobs.villager.ridable", villagerRidable);
         villagerRidableInWater = getBoolean("mobs.villager.ridable-in-water", villagerRidableInWater);
@@ -1259,6 +1260,7 @@ public class PurpurWorldConfig {
         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);
+        villagerFollowEmeraldBlock = getBoolean("mobs.villager.follow-emerald-blocks", villagerFollowEmeraldBlock);
     }
 
     public boolean vindicatorRidable = false;
@@ -1278,6 +1280,7 @@ public class PurpurWorldConfig {
     public boolean wanderingTraderRidable = false;
     public boolean wanderingTraderRidableInWater = false;
     public double wanderingTraderMaxHealth = 20.0D;
+    public boolean wanderingTraderFollowEmeraldBlock = false;
     private void wanderingTraderSettings() {
         wanderingTraderRidable = getBoolean("mobs.wandering_trader.ridable", wanderingTraderRidable);
         wanderingTraderRidableInWater = getBoolean("mobs.wandering_trader.ridable-in-water", wanderingTraderRidableInWater);
@@ -1287,6 +1290,7 @@ public class PurpurWorldConfig {
             set("mobs.wandering_trader.attributes.max_health", oldValue);
         }
         wanderingTraderMaxHealth = getDouble("mobs.wandering_trader.attributes.max_health", wanderingTraderMaxHealth);
+        wanderingTraderFollowEmeraldBlock = getBoolean("mobs.wandering_trader.follow-emerald-blocks", wanderingTraderFollowEmeraldBlock);
     }
 
     public boolean witchRidable = false;