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 4c4385d3d20556a2695f69c95d6b3cff087d26d9..fa730fd8b969e39cf063a560d9820d3655709398 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -286,4 +286,12 @@ 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/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 780afec80f90473beb4ea585f514ea7727344b9f..f70b70eb0505aa1efb115e0e5a45a068244fc755 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -565,7 +565,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
             blockposition = this.findLightningTargetAround(this.getBlockRandomPos(j, 0, k, 15));
             if (this.isRainingAt(blockposition)) {
                 DifficultyInstance difficultydamagescaler = this.getCurrentDifficultyAt(blockposition);
-                boolean flag1 = this.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.getEffectiveDifficulty() * 0.01D && !this.getBlockState(blockposition.below()).is(Blocks.LIGHTNING_ROD);
+                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(this);