SPIGOT-217: Fix VehicleBlockCollisionEvent having the wrong block location

nms-patches/Entity.patch

@@ -1,5 +1,5 @@
---- ../work/decompile-8eb82bde//net/minecraft/server/Entity.java	Sun Dec 21 17:29:15 2014
-+++ src/main/java/net/minecraft/server/Entity.java	Sun Dec 21 17:29:15 2014
+--- ../work/decompile-8eb82bde//net/minecraft/server/Entity.java	2015-01-04 20:00:32.717671452 +0000
++++ src/main/java/net/minecraft/server/Entity.java	2015-01-04 20:00:32.721671452 +0000
 @@ -6,8 +6,40 @@
  import java.util.UUID;
  import java.util.concurrent.Callable;
@@ -161,7 +161,7 @@
 +            // CraftBukkit start
 +            if (positionChanged && getBukkitEntity() instanceof Vehicle) {
 +                Vehicle vehicle = (Vehicle) this.getBukkitEntity();
-+                org.bukkit.block.Block bl = this.world.getWorld().getBlockAt(MathHelper.floor(this.locX), MathHelper.floor(this.locY - (double) this.getHeadHeight()), MathHelper.floor(this.locZ));
++                org.bukkit.block.Block bl = this.world.getWorld().getBlockAt(MathHelper.floor(this.locX), MathHelper.floor(this.locY), MathHelper.floor(this.locZ));
 +
 +                if (d6 > d0) {
 +                    bl = bl.getRelative(BlockFace.EAST);