From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 3 Oct 2019 18:08:03 -0500
Subject: [PATCH] Allow leashing villagers


diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
index 4063bceb87da208db76da2a820e5338ba1b5119b..f4c9e6184f39dea9ea1fda98333734773858d0f8 100644
--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
@@ -47,6 +47,7 @@ import net.minecraft.world.entity.decoration.HangingEntity;
 import net.minecraft.world.entity.decoration.LeashFenceKnotEntity;
 import net.minecraft.world.entity.item.ItemEntity;
 import net.minecraft.world.entity.monster.Enemy;
+import net.minecraft.world.entity.npc.AbstractVillager;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.entity.vehicle.Boat;
 import net.minecraft.world.item.ArmorItem;
@@ -1207,6 +1208,7 @@ public abstract class Mob extends LivingEntity {
         if (!this.isAlive()) {
             return InteractionResult.PASS;
         } else if (this.getLeashHolder() == player) {
+            if (hand == InteractionHand.OFF_HAND && (level.purpurConfig.villagerCanBeLeashed || level.purpurConfig.villagerTraderCanBeLeashed) && this instanceof AbstractVillager) return InteractionResult.CONSUME; // Purpur
             // CraftBukkit start - fire PlayerUnleashEntityEvent
             // Paper start - drop leash variable
             org.bukkit.event.player.PlayerUnleashEntityEvent event = CraftEventFactory.callPlayerUnleashEntityEvent(this, player, !player.getAbilities().instabuild);
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 897dcb4eb6e5530fb612e16551eb9e4f457985f5..20cb368076017e6dfc28ef4c2af778c0971e8462 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -76,6 +76,7 @@ import net.minecraft.world.entity.ai.village.poi.PoiManager;
 import net.minecraft.world.entity.ai.village.poi.PoiType;
 import net.minecraft.world.entity.animal.IronGolem;
 import net.minecraft.world.entity.item.ItemEntity;
+import net.minecraft.world.entity.monster.Enemy;
 import net.minecraft.world.entity.monster.Witch;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.entity.raid.Raid;
@@ -163,6 +164,11 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
     protected void registerGoals() {
         if (level.purpurConfig.villagerFollowEmeraldBlock) this.goalSelector.addGoal(3, new TemptGoal(this, 1.0D, TEMPT_ITEMS, false));
     }
+
+    @Override
+    public boolean canBeLeashed(Player player) {
+        return level.purpurConfig.villagerCanBeLeashed && !this.isLeashed();
+    }
     // Purpur end
 
     @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 11576b86368479c319691b58ad47f1f1e1479c68..a17f61874a8999973d7368cf729676dfa9da5569 100644
--- a/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
+++ b/src/main/java/net/minecraft/world/entity/npc/WanderingTrader.java
@@ -95,6 +95,13 @@ public class WanderingTrader extends net.minecraft.world.entity.npc.AbstractVill
         this.goalSelector.addGoal(10, new LookAtPlayerGoal(this, Mob.class, 8.0F));
     }
 
+    // Purpur start
+    @Override
+    public boolean canBeLeashed(Player player) {
+        return level.purpurConfig.villagerTraderCanBeLeashed && !this.isLeashed();
+    }
+    // Purpur end
+
     @Nullable
     @Override
     public AgeableMob getBreedOffspring(ServerLevel world, AgeableMob entity) {
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index 3be920c0fd4b406668cc18fbbb2dec6a7f0c2ab2..b6b362befd94e4cca156296058019c8a26c7b2f4 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -319,17 +319,21 @@ public class PurpurWorldConfig {
 
     public int villagerBrainTicks = 1;
     public boolean villagerUseBrainTicksOnlyWhenLagging = true;
+    public boolean villagerCanBeLeashed = false;
     public boolean villagerFarmingBypassMobGriefing = false;
     public boolean villagerFollowEmeraldBlock = false;
     private void villagerSettings() {
         villagerBrainTicks = getInt("mobs.villager.brain-ticks", villagerBrainTicks);
         villagerUseBrainTicksOnlyWhenLagging = getBoolean("mobs.villager.use-brain-ticks-only-when-lagging", villagerUseBrainTicksOnlyWhenLagging);
+        villagerCanBeLeashed = getBoolean("mobs.villager.can-be-leashed", villagerCanBeLeashed);
         villagerFarmingBypassMobGriefing = getBoolean("mobs.villager.bypass-mob-griefing", villagerFarmingBypassMobGriefing);
         villagerFollowEmeraldBlock = getBoolean("mobs.villager.follow-emerald-blocks", villagerFollowEmeraldBlock);
     }
 
+    public boolean villagerTraderCanBeLeashed = false;
     public boolean villagerTraderFollowEmeraldBlock = false;
     private void villagerTraderSettings() {
+        villagerTraderCanBeLeashed = getBoolean("mobs.wandering_trader.can-be-leashed", villagerTraderCanBeLeashed);
         villagerTraderFollowEmeraldBlock = getBoolean("mobs.wandering_trader.follow-emerald-blocks", villagerTraderFollowEmeraldBlock);
     }