Question

In a game that I am making whilst using Cocos2d, I have a sprite down the bottom of the screen that stays still. When the screen is tapped, I would like the sprite to move to where the screen was tapped, and then animate through the series of frames, then move to its original position. I know that I will need to use a CCSequence, but I don’t yet know how to make it move to the location of the touch. At the moment, I have searched around and I am using this code:

-(void) TouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *Touch = [touches anyObject];
CGPoint location = [Touch locationInView:[Touch view]];
[swat runAction:[CCMoveTo actionWithDuration:3 position:location]];}

I am getting no errors, but the sprite is unresponsive. Any ideas?

Answer 1

First, you have a typo in method’s name. It’s “ccTouchesBegan”, not “TouchesBegan”.

-(void)ccTouchesBegan:(NSSet*)touches withEvent:(UIEvent*)event

Second, your sprite will not move to where you expect. locationInView returns point in UIKit coordinates, and CCMoveTo uses OpenGL coordinates. You need to convert the point to OpenGL coordinates:

UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
location = [[CCDirector sharedDirector] convertToGL:location];