From ba42a80cc0bcbcbf2a8d3ecf0782b9acdc8c499e Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Sat, 7 Mar 2015 22:03:47 -0600
Subject: [PATCH] Drop falling block entities that are above the specified
 height


diff --git a/src/main/java/net/minecraft/server/EntityFallingBlock.java b/src/main/java/net/minecraft/server/EntityFallingBlock.java
index ce91553..ef93776 100644
--- a/src/main/java/net/minecraft/server/EntityFallingBlock.java
+++ b/src/main/java/net/minecraft/server/EntityFallingBlock.java
@@ -69,6 +69,17 @@ public class EntityFallingBlock extends Entity {
 
             this.motY -= 0.03999999910593033D;
             this.move(this.motX, this.motY, this.motZ);
+
+            // PaperSpigot start - Drop falling blocks above the specified height
+            if (this.world.paperSpigotConfig.fallingBlockHeightNerf != 0 && this.locY > this.world.paperSpigotConfig.fallingBlockHeightNerf) {
+                if (this.dropItem) {
+                    this.a(new ItemStack(block, 1, block.getDropData(this.block)), 0.0F);
+                }
+
+                this.die();
+            }
+            // PaperSpigot end
+
             this.motX *= 0.9800000190734863D;
             this.motY *= 0.9800000190734863D;
             this.motZ *= 0.9800000190734863D;
diff --git a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
index b7703a0..dcc02b7 100644
--- a/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
+++ b/src/main/java/org/github/paperspigot/PaperSpigotWorldConfig.java
@@ -146,4 +146,56 @@ public class PaperSpigotWorldConfig
         keepSpawnInMemory = getBoolean( "keep-spawn-loaded", true );
         log( "Keep spawn chunk loaded: " + keepSpawnInMemory );
     }
+
+    public int fallingBlockHeightNerf;
+    private void fallingBlockheightNerf()
+    {
+        // TODO: Remove migrations after most users have upgraded.
+        if ( PaperSpigotConfig.version < 8 )
+        {
+            // Migrate default value
+
+            int heightNerf = config.getInt( "world-settings.default.falling-block-height-nerf", 0 );
+            if ( heightNerf == 0 ) heightNerf = config.getInt( "world-settings.default.tnt-entity-height-nerf", 0 );
+            if ( heightNerf == 0 ) heightNerf = config.getInt( "world-settings.default.tnt-gameplay.tnt-entity-height-limit", 0 );
+            if ( heightNerf != 0 ) config.set( "world-settings.default.falling-block-height-nerf", heightNerf );
+
+            if ( config.contains( "world-settings.default.tnt-entity-height-nerf" ) )
+            {
+                config.getDefaults().set( "world-settings.default.tnt-entity-height-nerf", null );
+                config.set( "world-settings.default.tnt-entity-height-nerf", null );
+            }
+
+            if ( config.contains( "world-settings.default.tnt-gameplay.tnt-entity-height-limit" ) )
+            {
+                config.getDefaults().set( "world-settings.default.tnt-gameplay.tnt-entity-height-limit", null );
+                config.set( "world-settings.default.tnt-gameplay.tnt-entity-height-limit", null );
+            }
+
+            // Migrate world setting
+
+            heightNerf = config.getInt( "world-settings." + worldName + ".falling-block-height-nerf" );
+            if ( heightNerf == 0 ) heightNerf = config.getInt( "world-settings." + worldName + ".tnt-entity-height-nerf", 0 );
+            if ( heightNerf == 0 ) heightNerf = config.getInt( "world-settings." + worldName + ".tnt-gameplay.tnt-entity-height-limit", 0 );
+            if ( heightNerf != 0 ) config.set( "world-settings." + worldName + ".falling-block-height-nerf", heightNerf );
+
+            if ( config.contains( "world-settings." + worldName + ".tnt-entity-height-nerf" ) )
+            {
+                config.getDefaults().set( "world-settings." + worldName + ".tnt-entity-height-nerf", null );
+                config.set( "world-settings." + worldName + ".tnt-entity-height-nerf", null);
+            }
+
+            if ( config.contains( "world-settings." + worldName + ".tnt-gameplay.tnt-entity-height-limit" ) )
+            {
+                config.getDefaults().set( "world-settings." + worldName + ".tnt-gameplay.tnt-entity-height-limit", null );
+                config.set( "world-settings." + worldName + ".tnt-gameplay.tnt-entity-height-limit", null );
+            }
+        }
+
+        fallingBlockHeightNerf = getInt( "falling-block-height-nerf", 0 );
+        if ( fallingBlockHeightNerf != 0 )
+        {
+            log( "Falling Block Height Limit set to Y: " + fallingBlockHeightNerf );
+        }
+    }
 }
-- 
2.5.1