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

--- ../src-base/minecraft/net/minecraft/dispenser/BehaviorProjectileDispense.java
+++ ../src-work/minecraft/net/minecraft/dispenser/BehaviorProjectileDispense.java
@@ -1,9 +1,13 @@
 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.Entity;
 import net.minecraft.entity.IProjectile;
 import net.minecraft.item.ItemStack;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.world.World;
 
@@ -15,9 +19,34 @@
         IPosition iposition = BlockDispenser.getDispensePosition(source);
         EnumFacing enumfacing = (EnumFacing)source.getBlockState().getValue(BlockDispenser.FACING);
         IProjectile iprojectile = this.getProjectileEntity(world, iposition, stack);
+        // CraftBukkit start
+        ItemStack itemstack1 = stack.splitStack(1);
+        org.bukkit.block.Block block = world.getWorld().getBlockAt(source.getBlockPos().getX(), source.getBlockPos().getY(), source.getBlockPos().getZ());
+        CraftItemStack craftItem = CraftItemStack.asCraftMirror(itemstack1);
+
+        BlockDispenseEvent event = new BlockDispenseEvent(block, craftItem.clone(), new org.bukkit.util.Vector((double) enumfacing.getFrontOffsetX(), (double) ((float) enumfacing.getFrontOffsetY() + 0.1F), (double) enumfacing.getFrontOffsetZ()));
+        world.getServer().getPluginManager().callEvent(event);
+
+        if (event.isCancelled()) {
+            stack.stackSize++;
+            return stack;
+        }
+
+        if (!event.getItem().equals(craftItem)) {
+            stack.stackSize++;
+            // 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 != this) {
+                idispensebehavior.dispense(source, eventStack);
+                return stack;
+            }
+        }
+        ((Entity) iprojectile).projectileSource = new org.bukkit.craftbukkit.projectiles.CraftBlockProjectileSource((TileEntityDispenser) source.getBlockTileEntity());
         iprojectile.setThrowableHeading((double)enumfacing.getFrontOffsetX(), (double)((float)enumfacing.getFrontOffsetY() + 0.1F), (double)enumfacing.getFrontOffsetZ(), this.getProjectileVelocity(), this.getProjectileInaccuracy());
+        // CraftBukkit end
         world.spawnEntityInWorld((Entity)iprojectile);
-        stack.splitStack(1);
+        //stack.splitStack(1); // CraftBukkit - Handled during event processing
         return stack;
     }