Purpur/patches/server/0031-Breedable-Polar-Bears.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 12 Apr 2024 15:40:12 -0700
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 1ec0f8a70e9e603def18fd90c84f4525f6985381..09039a5a69ea582223d6ad06b1d99776742ec2e2 100644
--- a/src/main/java/net/minecraft/world/entity/animal/PolarBear.java
+++ b/src/main/java/net/minecraft/world/entity/animal/PolarBear.java
@@ -100,6 +100,28 @@ public class PolarBear extends Animal implements NeutralMob {
         this.getAttribute(Attributes.SCALE).setBaseValue(this.level().purpurConfig.polarBearScale);
     }
     // Purpur end - Configurable entity base attributes
+    // Purpur start - Breedable Polar Bears
+    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();
+        }
+    }
+    // Purpur end - Breedable Polar Bears
     @Nullable
     @Override
     public AgeableMob getBreedOffspring(ServerLevel world, AgeableMob entity) {
@@ -108,7 +130,7 @@ 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 - Breedable Polar Bears
     }
 
     @Override
@@ -119,6 +141,12 @@ public class PolarBear extends Animal implements NeutralMob {
         this.goalSelector.addGoal(1, new PolarBear.PolarBearMeleeAttackGoal());
         this.goalSelector
             .addGoal(1, new PanicGoal(this, 2.0, polarBear -> polarBear.isBaby() ? DamageTypeTags.PANIC_CAUSES : DamageTypeTags.PANIC_ENVIRONMENTAL_CAUSES));
+        // Purpur start - Breedable Polar Bears
+        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 - Breedable Polar Bears
         this.goalSelector.addGoal(4, new FollowParentGoal(this, 1.25));
         this.goalSelector.addGoal(5, new RandomStrollGoal(this, 1.0));
         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 37f89fabc286ea07bf6438df7ed7c8d6bcb76d48..efa453fdde735158b4c6324546ca83bdd2935746 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -1073,6 +1073,8 @@ public class PurpurWorldConfig {
     public boolean polarBearControllable = true;
     public double polarBearMaxHealth = 30.0D;
     public double polarBearScale = 1.0D;
+    public String polarBearBreedableItemString = "";
+    public Item polarBearBreedableItem = null;
     private void polarBearSettings() {
         polarBearRidable = getBoolean("mobs.polar_bear.ridable", polarBearRidable);
         polarBearRidableInWater = getBoolean("mobs.polar_bear.ridable-in-water", polarBearRidableInWater);
@@ -1084,6 +1086,9 @@ public class PurpurWorldConfig {
         }
         polarBearMaxHealth = getDouble("mobs.polar_bear.attributes.max_health", polarBearMaxHealth);
         polarBearScale = Mth.clamp(getDouble("mobs.polar_bear.attributes.scale", polarBearScale), 0.0625D, 16.0D);
+        polarBearBreedableItemString = getString("mobs.polar_bear.breedable-item", polarBearBreedableItemString);
+        Item item = BuiltInRegistries.ITEM.getValue(ResourceLocation.parse(polarBearBreedableItemString));
+        if (item != Items.AIR) polarBearBreedableItem = item;
     }
 
     public boolean pufferfishRidable = false;