Adding/Removing Events from a Single Enter_Frame loop?

[sc2071]

Greetings,

I'm creating another game, this time in AS3. It is my first AS3 project. In my previous games, I developed in pretty much AS1 and just about every movieClip had it's own enterFrame function. I keep hearing about code that uses a single enterFrame function to execute all things needed, but alas I have never attempted such a routine.

I have many ideas on how to achieve it, however I was hoping to get some official examples from people who, well, know more than me! Obviously, I don't want to be all like amateur hour and end up creating a piece of code that ends up more taxing on system resources, slowing performance, more than my old style of executing events!

To be clear, I'm looking to run a single enterFrame event that could have events added and removed from it. So, say you had a moving cannon that shot a single cannon ball. You would have a function for the movement of the cannon, and another function for the movement of the cannon ball. Both of these would be executed on enterFrame. Instead of adding an enterFrame event listener to each sprite, add the functions so that a single enterFrame, running perhaps on the root, would know to execute these functions. Furthermore, when the cannon ball moves off screen, the function would be removed from the single enterFrame.

Any code examples or links to tutorials would be most welcome!
Many thanks!
-sc2071

[cancerinform]

The problem with that is that the movements of the cannon and the ball would be the same.Here is the script to achieve what you want, but every object will move now.

for (var count=0;count<numChildren;count++)
{
    getChildAt(count).addEventListener(Event.ENTER_FRAME,frameHandler);
}
function frameHandler(event:Event):void
{
    var clip:Object=event.currentTarget as Object;
    clip.x+=10;
    if(clip.x>=400)
    {
        clip.removeEventListener(Event.ENTER_FRAME,frameHandler);
    }
}