cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   alex
   Member

   Hi
   I've managed to add touch actions to my layers but how do I limit them to only the area of my sprites?
   Thanks
   -alex

   Posted 2 years ago #
2. 

   natanavra
   Member

   You should check if the touch point is inside the sprite area, easiest thing I guess would be to implement a -(CGRect)getRect; method inside your sprite class. Just make sure you have a rect for the sprite...

   - (BOOL)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
         UITouch *touch = [touches anyObject];
         CGPoint loc = [touch locationInView:[touch view]];
         if(CGRectContainsPoint([mySprite getRect], loc)) {
              //Sprite got touched...
         }
   }

   There's possibly a way to create a sprite class that will register touches and cancel the touch registration for the layer but I'm not sure whether it will work or not.

   Posted 2 years ago #
3. 

   alex
   Member

   Do I have to add the location of my sprite and in what format if so? Could I get an example?

   Posted 2 years ago #
4. 

   alex
   Member

   anybody?

   Posted 2 years ago #
5. 

   Clain
   Member

   Do you use the TouchDispatcher ?

   Posted 2 years ago #
6. 

   alex
   Member

   nope

   Posted 2 years ago #
7. 

   Clain
   Member

   Well, maybe you should cause it does exactly what you want. Look at the TouchesTest example that comes with cocos (see Paddle.m which has an example of how to use the TouchDispatcher).

   Posted 2 years ago #
8. 

   Osiris
   Member

   I've been looking at TouchesTest and coming into Cocos2D only a month ago, I can't tell the difference between TouchDispatcher and the old way of handling touches.

   Posted 2 years ago #
9. 

   Clain
   Member

   old : - (BOOL)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
   new : - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event

   old : you get an NSSet of a certain number of touches
   new : you only get one touch

   old : called at the Layer level if isTouchEnabled is set to YES
   new : called at the Sprite (TextureNode in fact) level if you registered to the TouchDispatcher

   Posted 2 years ago #
10. 

    Osiris
    Member

    hmmm. [digesting...]

    Posted 2 years ago #

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