From b4f0c7aa46a509236ce5bf3606b5f13280c2be6b Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Tue, 22 Mar 2016 12:04:28 -0500
Subject: [PATCH] Configurable spawn chances for skeleton horses


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 7de7b74ff6..6ef0e1399e 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -228,4 +228,12 @@ public class PaperWorldConfig {
         log("Non Player Arrow Despawn Rate: " + nonPlayerArrowDespawnRate);
         log("Creative Arrow Despawn Rate: " + creativeArrowDespawnRate);
     }
+
+    public double skeleHorseSpawnChance;
+    private void skeleHorseSpawnChance() {
+        skeleHorseSpawnChance = getDouble("skeleton-horse-thunder-spawn-chance", 0.01D);
+        if (skeleHorseSpawnChance < 0) {
+            skeleHorseSpawnChance = 0.01D; // Vanilla value
+        }
+    }
 }
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index a34df8ce5d..96ed2da1f8 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -449,7 +449,7 @@ public class WorldServer extends World {
             blockposition = this.a(this.a(j, 0, k, 15));
             if (this.isRainingAt(blockposition)) {
                 DifficultyDamageScaler difficultydamagescaler = this.getDamageScaler(blockposition);
-                boolean flag1 = this.getGameRules().getBoolean(GameRules.DO_MOB_SPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.b() * 0.01D;
+                boolean flag1 = this.getGameRules().getBoolean(GameRules.DO_MOB_SPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.b() * paperConfig.skeleHorseSpawnChance; // Paper
 
                 if (flag1) {
                     EntityHorseSkeleton entityhorseskeleton = (EntityHorseSkeleton) EntityTypes.SKELETON_HORSE.a((World) this);
-- 
2.25.1