Configurable spawn chances for skeleton horses

Closes feature request GH-111

Spigot-Server-Patches/0024-FallingBlock-and-TNTPrimed-source-location-API.patch

@@ -1,4 +1,4 @@
-From 28bd75dabd3ed085189145006f8d09a99715a093 Mon Sep 17 00:00:00 2001
+From 5c3d517ea581e47e6071bf2665291596bda05a15 Mon Sep 17 00:00:00 2001
 From: Byteflux <byte@byteflux.net>
 Date: Tue, 1 Mar 2016 23:45:08 -0600
 Subject: [PATCH] FallingBlock and TNTPrimed source location API
@@ -74,7 +74,7 @@ index d7bea3d..c1c0c7c 100644
  
                  world.addEntity(entitytntprimed);
 diff --git a/src/main/java/net/minecraft/server/EntityFallingBlock.java b/src/main/java/net/minecraft/server/EntityFallingBlock.java
-index 4c8e336..c44e493 100644
+index 6246c05..5e8523d 100644
 --- a/src/main/java/net/minecraft/server/EntityFallingBlock.java
 +++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java
 @@ -17,13 +17,25 @@ public class EntityFallingBlock extends Entity {
@@ -193,10 +193,10 @@ index 564ea37..1820c7b 100644
  
      public EntityLiving getSource() {
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index a487c2f..33c3428 100644
+index 83e3003..25edfb8 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-@@ -916,7 +916,10 @@ public class CraftWorld implements World {
+@@ -921,7 +921,10 @@ public class CraftWorld implements World {
          double y = location.getBlockY() + 0.5;
          double z = location.getBlockZ() + 0.5;
  
@@ -208,7 +208,7 @@ index a487c2f..33c3428 100644
          entity.ticksLived = 1;
  
          world.addEntity(entity, SpawnReason.CUSTOM);
-@@ -952,7 +955,10 @@ public class CraftWorld implements World {
+@@ -957,7 +960,10 @@ public class CraftWorld implements World {
              int type = CraftMagicNumbers.getId(blockData.getBlock());
              int data = blockData.getBlock().toLegacyData(blockData);
  
@@ -220,7 +220,7 @@ index a487c2f..33c3428 100644
          } else if (Projectile.class.isAssignableFrom(clazz)) {
              if (Snowball.class.isAssignableFrom(clazz)) {
                  entity = new EntitySnowball(world, x, y, z);
-@@ -1157,7 +1163,8 @@ public class CraftWorld implements World {
+@@ -1162,7 +1168,8 @@ public class CraftWorld implements World {
                  throw new IllegalArgumentException("Cannot spawn hanging entity for " + clazz.getName() + " at " + location);
              }
          } else if (TNTPrimed.class.isAssignableFrom(clazz)) {

Spigot-Server-Patches/0101-Optimize-Chunk-Unload-Queue.patch

@@ -1,4 +1,4 @@
-From 6fdb5fbb0ccfd757fd43069d78c924d3e57837af Mon Sep 17 00:00:00 2001
+From 48991a207b2252026559f74e4c497434ff6202e9 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Fri, 18 Mar 2016 17:57:25 -0400
 Subject: [PATCH] Optimize Chunk Unload Queue
@@ -261,7 +261,7 @@ index a6c8e53..d8bd36c 100644
          this.spigotConfig = new org.spigotmc.SpigotWorldConfig( worlddata.getName() ); // Spigot
          this.paperConfig = new com.destroystokyo.paper.PaperWorldConfig(worlddata.getName(), this.spigotConfig); // Paper
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index be311cd..6307c19 100644
+index c51c74b..caa5e62 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 @@ -206,7 +206,7 @@ public class CraftWorld implements World {
@@ -299,7 +299,7 @@ index be311cd..6307c19 100644
                      if (neighbor != null) {
                          neighbor.setNeighborLoaded(-x, -z);
                          chunk.setNeighborLoaded(x, z);
-@@ -1538,7 +1539,7 @@ public class CraftWorld implements World {
+@@ -1543,7 +1544,7 @@ public class CraftWorld implements World {
              }
  
              // Already unloading?

Spigot-Server-Patches/0108-Configurable-spawn-chances-for-skeleton-horses.patch

@@ -0,0 +1,39 @@
+From 55928e9bb2824290e4135881784001be635f74da 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 38272c4..8cd2070 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+@@ -301,4 +301,9 @@ public class PaperWorldConfig {
+         }
+         log("Non Player Arrow Despawn Rate: " + nonPlayerArrowDespawnRate);
+     }
++
++    public double skeleHorseSpawnChance;
++    private void skeleHorseSpawnChance() {
++        skeleHorseSpawnChance = getDouble("skeleton-horse-thunder-soawn-chance", -1.0D); // -1.0D represents a "vanilla" state
++    }
+ }
+diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
+index 7e06fa9..f7bb918 100644
+--- a/src/main/java/net/minecraft/server/WorldServer.java
++++ b/src/main/java/net/minecraft/server/WorldServer.java
+@@ -426,7 +426,10 @@ public class WorldServer extends World implements IAsyncTaskHandler {
+                     if (this.isRainingAt(blockposition)) {
+                         DifficultyDamageScaler difficultydamagescaler = this.D(blockposition);
+ 
+-                        if (this.random.nextDouble() < (double) difficultydamagescaler.b() * 0.05D) {
++                        // Paper start - Configurable skeleton horse spawn chance
++                        double chance = this.paperConfig.skeleHorseSpawnChance == -1.0D ? (double) difficultydamagescaler.b() * 0.05D : this.paperConfig.skeleHorseSpawnChance;
++                        if (this.random.nextDouble() < chance) {
++                            // Paper end
+                             EntityHorse entityhorse = new EntityHorse(this);
+ 
+                             entityhorse.setType(EnumHorseType.SKELETON);
+-- 
+2.7.4
+