I don't program games (so add that factor as a consideration), it was just my first thought that if I were doing this, I wouldn't want to test every object for a collision all the time. If there is a latency issue such as you describe, a homebrewed Event class might eliminate it.
P. >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:flashcoders- >> [EMAIL PROTECTED] On Behalf Of slangeberg >> Sent: Wednesday, December 13, 2006 11:13 AM >> To: Flashcoders mailing list >> Subject: Re: [Flashcoders] AS2 OOP Class Structure for simple pong type >> game >> >> Have you actually implemented an event system like this in games? It >> seems >> like a good idea, but for some reason I always thought this approach >> would >> introduce unnecessary latency, but now I'm not sure why! >> >> -Scott >> >> On 12/13/06, Pete Miller <[EMAIL PROTECTED]> wrote: >> > >> > Another possible strategy is for the ball to fire off an event every >> > time it crosses certain vertical location thresholds. The target >> > objects could then listen for the event which matches their vertical >> > location to test for a collision. >> > >> > For example, when the ball descends to the row containing the paddle, >> it >> > fires that event, and the paddle, receiving it, tests for collision. >> > When the ball ascends to the first row of bricks, those bricks each >> test >> > for collsion. This might be a performance improvement over testing >> > every object in the system all the time. >> > >> > P. >> > >> > >> -----Original Message----- >> > >> From: [EMAIL PROTECTED] [mailto:flashcoders- >> > >> [EMAIL PROTECTED] On Behalf Of Holth, Daniel C. >> > >> Sent: Wednesday, December 13, 2006 9:43 AM >> > >> To: Flashcoders mailing list >> > >> Subject: RE: [Flashcoders] AS2 OOP Class Structure for simple pong >> > type >> > >> game >> > >> >> > >> >> > >> That would be one way. Although it is rather limiting. I'm >> assuming >> > >> that the ball will bounce whenever it hits an object. >> > >> >> > >> Perhaps create an array of bounceObjects[]; >> > >> >> > >> function addBounceObject(obj:Object):Number{ >> > >> return bounceObjects.push(obj); >> > >> } >> > >> >> > >> Then you could create your hit tracker. >> > >> >> > >> function checkCollisions(){ >> > >> var len:Number = bounceObjects.length; >> > >> // Loop through and check all objects hitting the ball >> > >> for(var i:Number = 0; i < len; i++){ >> > >> // Check each object hit ball >> > >> if(this.hitTest(bounceObjects[i])){ >> > >> >> > >> this.bounce(); // Bounce the ball >> > >> bounceObject[i].onHitByBall(); >> > >> } >> > >> } >> > >> } >> > >> >> > >> Have your onEnterFrame functions run checkCollisions every time. >> > That >> > >> way you check for hits against the paddle, bricks etc. >> > >> >> > >> >> > >> The bounceObject[i].onHitByBall() would execute a function in that >> > >> objects code that would say what to do when it was hit by a ball. >> In >> > the >> > >> instance of a paddele do nothing, a brick - destory it! >> > >> >> > >> >> > >> -Dan >> > >> >> > >> -----Original Message----- >> > >> From: [EMAIL PROTECTED] >> > >> [mailto:[EMAIL PROTECTED] Behalf Of Paul >> > >> Steven >> > >> Sent: Wednesday, December 13, 2006 8:26 AM >> > >> To: 'Flashcoders mailing list' >> > >> Subject: RE: [Flashcoders] AS2 OOP Class Structure for simple pong >> > type >> > >> game >> > >> >> > >> >> > >> Thanks for the reply Dan >> > >> >> > >> Not quite sure how the Ball references the Paddle or alternatively >> > the >> > >> CollisionController references the ball and paddle. >> > >> >> > >> My Game class creates the Ball and Paddle as follows: >> > >> >> > >> mcPaddle = new Paddle(mcReference, "paddle_mc", 50, 100, 289); >> > >> >> > >> var vBall_Object = new Ball(mcReference, "ball_mc", 100, 160, 240); >> > >> arrBallObjects.push(vBall_Object); >> > >> >> > >> If I wanted to give the Ball a reference to the paddle, would I do >> > >> something >> > >> like this? (see last parameter) >> > >> >> > >> var vBall_Object = new Ball(mcReference, "ball_mc", 100, 160, 240, >> > >> mcPaddle); >> > >> >> > >> Thanks >> > >> >> > >> Paul >> > >> >> > >> >> > >> -----Original Message----- >> > >> From: [EMAIL PROTECTED] >> > >> [mailto:[EMAIL PROTECTED] On Behalf Of >> > Holth, >> > >> Daniel C. >> > >> Sent: 13 December 2006 14:14 >> > >> To: Flashcoders mailing list >> > >> Subject: RE: [Flashcoders] AS2 OOP Class Structure for simple pong >> > type >> > >> game >> > >> >> > >> >> > >> I would make the ball responsible for checking if it collides with >> > the >> > >> paddle because the ball's behavior/state will change - not the >> > paddle's, >> > >> nor >> > >> does the state of the 'game' really change. >> > >> >> > >> An alternative would be to create a CollissionControler.as that does >> > all >> > >> your hit testing for you. This may become useful when you add the >> > bricks >> > >> or >> > >> other objects that need to check for collisions. >> > >> >> > >> -Dan >> > >> >> > >> -----Original Message----- >> > >> From: [EMAIL PROTECTED] >> > >> [mailto:[EMAIL PROTECTED] Behalf Of Paul >> > >> Steven >> > >> Sent: Wednesday, December 13, 2006 8:02 AM >> > >> To: 'Flashcoders mailing list' >> > >> Subject: [Flashcoders] AS2 OOP Class Structure for simple pong type >> > game >> > >> >> > >> >> > >> I am creating a simple pong / breakout / arkanoid game in AS2 and >> not >> > >> sure >> > >> how best to deal with the classes. >> > >> >> > >> So far I have a Game.as class, a Paddle.as class and a Ball.as >> class. >> > >> >> > >> I need to detect when the ball (or balls) collide with the Paddle. >> > >> >> > >> My question is, which class should check for this collision? >> > >> >> > >> Should the Game class do this or should I pass a reference to the >> > Paddle >> > >> into the Ball class so the Ball is able to check this collision >> > itself? >> > >> >> > >> If it is the Game class, then I guess it is a case of giving both >> the >> > >> Paddle >> > >> and Ball classes a method to return their current position and then >> > >> letting >> > >> the Game class compare these positions to determine if a collision >> > has >> > >> occurred? >> > >> >> > >> If the Ball class needs to have a reference to the Paddle passed to >> > it, I >> > >> am >> > >> not sure how this is done. So I would appreciate any advice on this. >> > >> >> > >> I appreciate there are probably a lot of different solutions to >> this, >> > but >> > >> I >> > >> am trying to get off on the right footing with this OOP programming. >> > >> >> > >> Many thanks >> > >> >> > >> Paul >> > >> >> > >> _______________________________________________ >> > >> [email protected] >> > >> To change your subscription options or search the archive: >> > >> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders >> > >> >> > >> Brought to you by Fig Leaf Software >> > >> Premier Authorized Adobe Consulting and Training >> > >> http://www.figleaf.com >> > >> http://training.figleaf.com >> > >> >> > >> This e-mail and its attachments are intended only for the use of the >> > >> addressee(s) and may contain privileged, confidential or proprietary >> > >> information. 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