Update CraftBukkit to Minecraft 1.4(.2).

src/main/java/net/minecraft/server/DispenseBehaviorProjectile.java

@@ -0,0 +1,64 @@
+package net.minecraft.server;
+
+// CraftBukkit start
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.event.block.BlockDispenseEvent;
+// CraftBukkit end
+
+public abstract class DispenseBehaviorProjectile extends DispenseBehaviorItem {
+
+    public DispenseBehaviorProjectile() {}
+
+    public ItemStack b(ISourceBlock isourceblock, ItemStack itemstack) {
+        World world = isourceblock.k();
+        IPosition iposition = BlockDispenser.a(isourceblock);
+        EnumFacing enumfacing = EnumFacing.a(isourceblock.h());
+        IProjectile iprojectile = this.a(world, iposition);
+
+        // CraftBukkit start
+        ItemStack itemstack1 = itemstack.a(1);
+        org.bukkit.block.Block block = world.getWorld().getBlockAt(isourceblock.getBlockX(), isourceblock.getBlockY(), isourceblock.getBlockZ());
+        org.bukkit.inventory.ItemStack bukkitItem = new CraftItemStack(itemstack1).clone();
+
+        BlockDispenseEvent event = new BlockDispenseEvent(block, bukkitItem, new org.bukkit.util.Vector((double) enumfacing.c(), 0.10000000149011612D, (double) enumfacing.e()));
+        if (!BlockDispenser.eventFired) {
+            world.getServer().getPluginManager().callEvent(event);
+        }
+
+        if (event.isCancelled()) {
+            itemstack.count++;
+            return itemstack;
+        }
+
+        if (!event.getItem().equals(bukkitItem)) {
+            itemstack.count++;
+            // Chain to handler for new item
+            IDispenseBehavior idispensebehavior = (IDispenseBehavior) BlockDispenser.a.a(itemstack.getItem());
+            if (idispensebehavior != IDispenseBehavior.a && idispensebehavior != this) {
+                idispensebehavior.a(isourceblock, CraftItemStack.createNMSItemStack(event.getItem()));
+                return itemstack;
+            }
+        }
+
+        iprojectile.shoot(event.getVelocity().getX(), event.getVelocity().getY(), event.getVelocity().getZ(), this.b(), this.a());
+        // CraftBukkit end
+
+        world.addEntity((Entity) iprojectile);
+        // itemstack.a(1); // CraftBukkit - Handled during event processing
+        return itemstack;
+    }
+
+    protected void a(ISourceBlock isourceblock) {
+        isourceblock.k().triggerEffect(1002, isourceblock.getBlockX(), isourceblock.getBlockY(), isourceblock.getBlockZ(), 0);
+    }
+
+    protected abstract IProjectile a(World world, IPosition iposition);
+
+    protected float a() {
+        return 6.0F;
+    }
+
+    protected float b() {
+        return 1.1F;
+    }
+}