From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 26 Mar 2020 19:46:44 -0500
Subject: [PATCH] Breedable Polar Bears


diff --git a/src/main/java/net/minecraft/world/entity/animal/PolarBear.java b/src/main/java/net/minecraft/world/entity/animal/PolarBear.java
index 3f185b02dc23942d2216cf9a8bdc493ffa2e75d9..05739e69f1a11138d7c13bb9d8ca7695753ae40c 100644
--- a/src/main/java/net/minecraft/world/entity/animal/PolarBear.java
+++ b/src/main/java/net/minecraft/world/entity/animal/PolarBear.java
@@ -74,17 +74,17 @@ public class PolarBear extends Animal implements NeutralMob {
     // Purpur start
     @Override
     public boolean isRidable() {
-        return level.purpurConfig.polarBearRidable;
+        return level().purpurConfig.polarBearRidable;
     }
 
     @Override
     public boolean dismountsUnderwater() {
-        return level.purpurConfig.useDismountsUnderwaterTag ? super.dismountsUnderwater() : !level.purpurConfig.polarBearRidableInWater;
+        return level().purpurConfig.useDismountsUnderwaterTag ? super.dismountsUnderwater() : !level().purpurConfig.polarBearRidableInWater;
     }
 
     @Override
     public boolean isControllable() {
-        return level.purpurConfig.polarBearControllable;
+        return level().purpurConfig.polarBearControllable;
     }
 
     @Override
@@ -99,6 +99,27 @@ public class PolarBear extends Animal implements NeutralMob {
     }
     // Purpur end
 
+    public boolean canMate(Animal other) {
+        if (other == this) {
+            return false;
+        } else if (this.isStanding()) {
+            return false;
+        } else if (this.getTarget() != null) {
+            return false;
+        } else if (!(other instanceof PolarBear)) {
+            return false;
+        } else {
+            PolarBear bear = (PolarBear) other;
+            if (bear.isStanding()) {
+                return false;
+            }
+            if (bear.getTarget() != null) {
+                return false;
+            }
+            return this.isInLove() && bear.isInLove();
+        }
+    }
+
     @Nullable
     @Override
     public AgeableMob getBreedOffspring(ServerLevel world, AgeableMob entity) {
@@ -107,7 +128,7 @@ public class PolarBear extends Animal implements NeutralMob {
 
     @Override
     public boolean isFood(ItemStack stack) {
-        return false;
+        return level.purpurConfig.polarBearBreedableItem != null && stack.getItem() == level.purpurConfig.polarBearBreedableItem; // Purpur
     }
 
     @Override
@@ -117,6 +138,12 @@ public class PolarBear extends Animal implements NeutralMob {
         this.goalSelector.addGoal(0, new org.purpurmc.purpur.entity.ai.HasRider(this)); // Purpur
         this.goalSelector.addGoal(1, new PolarBear.PolarBearMeleeAttackGoal());
         this.goalSelector.addGoal(1, new PolarBear.PolarBearPanicGoal());
+        // Purpur start
+        if (level().purpurConfig.polarBearBreedableItem != null) {
+            this.goalSelector.addGoal(2, new net.minecraft.world.entity.ai.goal.BreedGoal(this, 1.0D));
+            this.goalSelector.addGoal(3, new net.minecraft.world.entity.ai.goal.TemptGoal(this, 1.0D, net.minecraft.world.item.crafting.Ingredient.of(level.purpurConfig.polarBearBreedableItem), false));
+        }
+        // Purpur end
         this.goalSelector.addGoal(4, new FollowParentGoal(this, 1.25D));
         this.goalSelector.addGoal(5, new RandomStrollGoal(this, 1.0D));
         this.goalSelector.addGoal(6, new LookAtPlayerGoal(this, Player.class, 6.0F));
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index b60c5e84d13d7cd51d1203a35a9382c1ff6dec55..c9327c407d1fce1a80307eb3ad2c4c5c123fba8e 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -686,6 +686,8 @@ public class PurpurWorldConfig {
     }
 
     public double polarBearMaxHealth = 30.0D;
+    public String polarBearBreedableItemString = "";
+    public Item polarBearBreedableItem = null;
     private void polarBearSettings() {
         if (PurpurConfig.version < 10) {
             double oldValue = getDouble("mobs.polar_bear.attributes.max-health", polarBearMaxHealth);
@@ -693,6 +695,9 @@ public class PurpurWorldConfig {
             set("mobs.polar_bear.attributes.max_health", oldValue);
         }
         polarBearMaxHealth = getDouble("mobs.polar_bear.attributes.max_health", polarBearMaxHealth);
+        polarBearBreedableItemString = getString("mobs.polar_bear.breedable-item", polarBearBreedableItemString);
+        Item item = BuiltInRegistries.ITEM.get(new ResourceLocation(polarBearBreedableItemString));
+        if (item != Items.AIR) polarBearBreedableItem = item;
     }
 
     public double pufferfishMaxHealth = 3.0D;