From 0000000000000000000000000000000000000000 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 3c78d3234054ce2dc46ef77decb6adb0cbd10620..cd64fb9d0c6d123e1c86cb33f12cd9cefc9f80d0 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -230,4 +230,12 @@ 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 01fde964fa2fae3cfefc4b9e8e2c59a997d09539..51afd8277d1b00e299c44d198faa64179940a8ec 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -479,7 +479,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
             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);