From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sun, 7 Jul 2019 19:52:16 -0500
Subject: [PATCH] Zombie horse naturally spawn


diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index f0b9ff60b6122473bc2f87f56a6d190994079da6..14c3e9fcdfb088d3fe0a15266b50a7da82a5d240 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -87,6 +87,7 @@ import net.minecraft.world.entity.ai.village.poi.PoiManager;
 import net.minecraft.world.entity.ai.village.poi.PoiType;
 import net.minecraft.world.entity.animal.Animal;
 import net.minecraft.world.entity.animal.WaterAnimal;
+import net.minecraft.world.entity.animal.horse.AbstractHorse;
 import net.minecraft.world.entity.animal.horse.SkeletonHorse;
 import net.minecraft.world.entity.boss.EnderDragonPart;
 import net.minecraft.world.entity.boss.enderdragon.EnderDragon;
@@ -713,12 +714,18 @@ public class ServerLevel extends net.minecraft.world.level.Level implements Worl
                 boolean flag1 = this.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.getEffectiveDifficulty() * paperConfig.skeleHorseSpawnChance && !this.getBlockState(blockposition.below()).is(Blocks.LIGHTNING_ROD); // Paper
 
                 if (flag1) {
-                    SkeletonHorse entityhorseskeleton = (SkeletonHorse) EntityType.SKELETON_HORSE.create((net.minecraft.world.level.Level) this);
-
-                    entityhorseskeleton.setTrap(true);
-                    entityhorseskeleton.setAge(0);
-                    entityhorseskeleton.setPos((double) blockposition.getX(), (double) blockposition.getY(), (double) blockposition.getZ());
-                    this.addEntity(entityhorseskeleton, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.LIGHTNING); // CraftBukkit
+                    // Purpur start
+                    AbstractHorse horse;
+                    if (purpurConfig.zombieHorseSpawnChance > 0D && random.nextDouble() <= purpurConfig.zombieHorseSpawnChance) {
+                        horse = EntityType.ZOMBIE_HORSE.create(this);
+                    } else {
+                        horse = EntityType.SKELETON_HORSE.create(this);
+                        ((SkeletonHorse) horse).setTrap(true);
+                    }
+                    horse.setAge(0);
+                    horse.setPos(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+                    this.addEntity(horse, CreatureSpawnEvent.SpawnReason.LIGHTNING); // CraftBukkit
+                    // Purpur end
                 }
 
                 LightningBolt entitylightning = (LightningBolt) EntityType.LIGHTNING_BOLT.create((net.minecraft.world.level.Level) this);
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index 3c69825659439a0a5a7ee6fc97d98bf0ca3c8c5a..bddf84e9830c4e46f0648f76523af471c3b03e66 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -1222,6 +1222,7 @@ public class PurpurWorldConfig {
     public double zombieHorseJumpStrengthMax = 1.0D;
     public double zombieHorseMovementSpeedMin = 0.2D;
     public double zombieHorseMovementSpeedMax = 0.2D;
+    public double zombieHorseSpawnChance = 0.0D;
     private void zombieHorseSettings() {
         zombieHorseRidableInWater = getBoolean("mobs.zombie_horse.ridable-in-water", zombieHorseRidableInWater);
         zombieHorseCanSwim = getBoolean("mobs.zombie_horse.can-swim", zombieHorseCanSwim);
@@ -1237,6 +1238,7 @@ public class PurpurWorldConfig {
         zombieHorseJumpStrengthMax = getDouble("mobs.zombie_horse.attributes.jump_strength.max", zombieHorseJumpStrengthMax);
         zombieHorseMovementSpeedMin = getDouble("mobs.zombie_horse.attributes.movement_speed.min", zombieHorseMovementSpeedMin);
         zombieHorseMovementSpeedMax = getDouble("mobs.zombie_horse.attributes.movement_speed.max", zombieHorseMovementSpeedMax);
+        zombieHorseSpawnChance = getDouble("mobs.zombie_horse.spawn-chance", zombieHorseSpawnChance);
     }
 
     public boolean zombieVillagerRidable = false;