CatServer/patches/net/minecraft/dispenser/BehaviorDefaultDispenseItem.java.patch

--- ../src-base/minecraft/net/minecraft/dispenser/BehaviorDefaultDispenseItem.java
+++ ../src-work/minecraft/net/minecraft/dispenser/BehaviorDefaultDispenseItem.java
@@ -1,5 +1,8 @@
 package net.minecraft.dispenser;
 
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.event.block.BlockDispenseEvent;
+
 import net.minecraft.block.BlockDispenser;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.item.ItemStack;
@@ -21,11 +24,40 @@
         EnumFacing enumfacing = (EnumFacing)source.getBlockState().getValue(BlockDispenser.FACING);
         IPosition iposition = BlockDispenser.getDispensePosition(source);
         ItemStack itemstack = stack.splitStack(1);
-        doDispense(source.getWorld(), itemstack, 6, enumfacing, iposition);
+        // CraftBukkit start
+        if (!doDispense(source.getWorld(), itemstack, 6, enumfacing, iposition, source)) {
+            stack.stackSize++;
+        }
+        // CraftBukkit end
         return stack;
     }
+    
+    public static void doDispense(World worldIn, ItemStack stack, int speed, EnumFacing facing, IPosition position) { // CatServer - mods compatibility
+        double d0 = position.getX();
+        double d1 = position.getY();
+        double d2 = position.getZ();
 
-    public static void doDispense(World worldIn, ItemStack stack, int speed, EnumFacing facing, IPosition position)
+        if (facing.getAxis() == EnumFacing.Axis.Y)
+        {
+            d1 = d1 - 0.125D;
+        }
+        else
+        {
+            d1 = d1 - 0.15625D;
+        }
+
+        EntityItem entityitem = new EntityItem(worldIn, d0, d1, d2, stack);
+        double d3 = worldIn.rand.nextDouble() * 0.1D + 0.2D;
+        entityitem.motionX = (double)facing.getFrontOffsetX() * d3;
+        entityitem.motionY = 0.20000000298023224D;
+        entityitem.motionZ = (double)facing.getFrontOffsetZ() * d3;
+        entityitem.motionX += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
+        entityitem.motionY += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
+        entityitem.motionZ += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
+        worldIn.spawnEntityInWorld(entityitem);
+    }
+
+    public static boolean doDispense(World worldIn, ItemStack stack, int speed, EnumFacing facing, IPosition position, IBlockSource source)
     {
         double d0 = position.getX();
         double d1 = position.getY();
@@ -48,7 +80,36 @@
         entityitem.motionX += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
         entityitem.motionY += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
         entityitem.motionZ += worldIn.rand.nextGaussian() * 0.007499999832361937D * (double)speed;
+
+        org.bukkit.block.Block block = worldIn.getWorld().getBlockAt(source.getBlockPos().getX(), source.getBlockPos().getY(), source.getBlockPos().getZ());
+        CraftItemStack craftItem = CraftItemStack.asCraftMirror(stack);
+
+        BlockDispenseEvent event = new BlockDispenseEvent(block, craftItem.clone(), new org.bukkit.util.Vector(entityitem.motionX, entityitem.motionY, entityitem.motionZ));
+        worldIn.getServer().getPluginManager().callEvent(event);
+
+        if (event.isCancelled()) {
+            return false;
+        }
+
+        entityitem.setEntityItemStack(CraftItemStack.asNMSCopy(event.getItem()));
+        entityitem.motionX = event.getVelocity().getX();
+        entityitem.motionY = event.getVelocity().getY();
+        entityitem.motionZ = event.getVelocity().getZ();
+
+        if (!event.getItem().getType().equals(craftItem.getType())) {
+            // Chain to handler for new item
+            ItemStack eventStack = CraftItemStack.asNMSCopy(event.getItem());
+            IBehaviorDispenseItem idispensebehavior = BlockDispenser.DISPENSE_BEHAVIOR_REGISTRY.getObject(eventStack.getItem());
+            if (idispensebehavior != IBehaviorDispenseItem.DEFAULT_BEHAVIOR && idispensebehavior.getClass() != BehaviorDefaultDispenseItem.class) {
+                idispensebehavior.dispense(source, eventStack);
+            } else {
+                worldIn.spawnEntityInWorld(entityitem);
+            }
+            return false;
+        }
+
         worldIn.spawnEntityInWorld(entityitem);
+        return true;
     }
 
     protected void playDispenseSound(IBlockSource source)