From db1f0c4ca46a333503cff31dae56557ef27ba9bf Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Fri, 10 Apr 2015 02:24:20 -0700
Subject: [PATCH] Optimize draining


diff --git a/src/main/java/net/minecraft/server/BlockFlowing.java b/src/main/java/net/minecraft/server/BlockFlowing.java
index de1dddb..d8de1fc 100644
--- a/src/main/java/net/minecraft/server/BlockFlowing.java
+++ b/src/main/java/net/minecraft/server/BlockFlowing.java
@@ -88,7 +88,18 @@ public class BlockFlowing extends BlockFluids {
                     iblockdata = iblockdata.set(BlockFlowing.LEVEL, Integer.valueOf(i1));
                     world.setTypeAndData(blockposition, iblockdata, 2);
                     world.a(blockposition, (Block) this, j);
-                    world.applyPhysics(blockposition, this);
+                    // PaperSpigot start - Optimize draining
+                    if (world.paperSpigotConfig.optimizeDraining) {
+                        world.d(blockposition.west(), this);
+                        world.d(blockposition.east(), this);
+                        world.d(blockposition.up(), this);
+                        world.d(blockposition.north(), this);
+                        world.d(blockposition.south(), this);
+                        world.spigotConfig.antiXrayInstance.updateNearbyBlocks(world, blockposition); // Spigot
+                    } else {
+                        world.applyPhysics(blockposition, this);
+                    }
+                    // PaperSpigot end
                 }
             }
         } else {
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index dc8bebd..1ca8b0d 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -240,4 +240,10 @@ public class PaperSpigotWorldConfig
         useAsyncLighting = getBoolean( "use-async-lighting", false );
         log( "World async lighting: " + useAsyncLighting );
     }
+
+    public boolean optimizeDraining;
+    private void optimizeDraining()
+    {
+        optimizeDraining = getBoolean( "optimize-draining", false );
+    }
 }
-- 
2.4.1.windows.1