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 84ab90dd1fe693da71732533ccff940c1007e1b6..179fdf7b7f68db610925a9d7b88879289b1b98b8 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
@@ -67,7 +67,7 @@ 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 5f656fc726a1dc5f42657095a2f2b7cf85b92d7c..6c74cf1dea99b3b967b8c3d76f405f823c881fb9 100644
--- a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
@@ -48,6 +48,7 @@ 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
     @Override
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 37c26008486ffdf7f1d6bdfd0253067a1c6bf942..448f3cacd0c599eb1841b31b1c3bfc60ba3da7d3 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -154,6 +154,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
         this.getNavigation().setRequiredPathLength(48.0F);
         this.setCanPickUpLoot(true);
         this.setVillagerData(this.getVillagerData().setType(type).setProfession(VillagerProfession.NONE));
+        if (level().purpurConfig.villagerFollowEmeraldBlock) this.goalSelector.addGoal(3, new net.minecraft.world.entity.ai.goal.TemptGoal(this, 1.0D, TEMPT_ITEMS, false));
     }
 
     // Purpur start
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 f741aca818bc983b034b3ac9864c1d71c714f9b4..c8f6a6fd0d954346e8651b83e05063e09b53f7f9 100644
--- a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
+++ b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
@@ -114,6 +114,7 @@ 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/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index e9e999d06fec2918fc2ee0fed05f8fb88b9675c1..96cc376fb7e32ab9c2d7c8697ad98bfe00c6958a 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -1573,6 +1573,7 @@ public class PurpurWorldConfig {
     public boolean villagerControllable = true;
     public double villagerMaxHealth = 20.0D;
     public double villagerScale = 1.0D;
+    public boolean villagerFollowEmeraldBlock = false;
     private void villagerSettings() {
         villagerRidable = getBoolean("mobs.villager.ridable", villagerRidable);
         villagerRidableInWater = getBoolean("mobs.villager.ridable-in-water", villagerRidableInWater);
@@ -1584,6 +1585,7 @@ public class PurpurWorldConfig {
         }
         villagerMaxHealth = getDouble("mobs.villager.attributes.max_health", villagerMaxHealth);
         villagerScale = Mth.clamp(getDouble("mobs.villager.attributes.scale", villagerScale), 0.0625D, 16.0D);
+        villagerFollowEmeraldBlock = getBoolean("mobs.villager.follow-emerald-blocks", villagerFollowEmeraldBlock);
     }
 
     public boolean vindicatorRidable = false;
@@ -1609,6 +1611,7 @@ public class PurpurWorldConfig {
     public boolean wanderingTraderControllable = true;
     public double wanderingTraderMaxHealth = 20.0D;
     public double wanderingTraderScale = 1.0D;
+    public boolean wanderingTraderFollowEmeraldBlock = false;
     private void wanderingTraderSettings() {
         wanderingTraderRidable = getBoolean("mobs.wandering_trader.ridable", wanderingTraderRidable);
         wanderingTraderRidableInWater = getBoolean("mobs.wandering_trader.ridable-in-water", wanderingTraderRidableInWater);
@@ -1620,6 +1623,7 @@ public class PurpurWorldConfig {
         }
         wanderingTraderMaxHealth = getDouble("mobs.wandering_trader.attributes.max_health", wanderingTraderMaxHealth);
         wanderingTraderScale = Mth.clamp(getDouble("mobs.wandering_trader.attributes.scale", wanderingTraderScale), 0.0625D, 16.0D);
+        wanderingTraderFollowEmeraldBlock = getBoolean("mobs.wandering_trader.follow-emerald-blocks", wanderingTraderFollowEmeraldBlock);
     }
 
     public boolean wardenRidable = false;