Method dispenseStack

src/main/java/net/minecraft/init/Bootstrap.java:135–150

(IBlockSource source, ItemStack stack)

        BlockDispenser.dispenseBehaviorRegistry.putObject(Items.spawn_egg, new BehaviorDefaultDispenseItem()
        {
            public ItemStack dispenseStack(IBlockSource source, ItemStack stack)
            {
                EnumFacing enumfacing = BlockDispenser.getFacing(source.getBlockMetadata());
                double d0 = source.getX() + (double)enumfacing.getFrontOffsetX();
                double d1 = (float)source.getBlockPos().getY() + 0.2F;
                double d2 = source.getZ() + (double)enumfacing.getFrontOffsetZ();
                Entity entity = ItemMonsterPlacer.spawnCreature(source.getWorld(), stack.getMetadata(), d0, d1, d2);

                if (entity instanceof EntityLivingBase && stack.hasDisplayName())
                {
                    entity.setCustomNameTag(stack.getDisplayName());
                }

                stack.splitStack(1);
                return stack;
            }
        });
        BlockDispenser.dispenseBehaviorRegistry.putObject(Items.fireworks, new BehaviorDefaultDispenseItem()
        {