Question

I am trying to figure out touch handling on multiple CCNodes .

I have

 Main CCLayer
            ------> z:2 Hud CCNode

On main layer I choose an object, on hud layer I want to control it. I followed this q&a its very helpful Cocos2d handling touch with multiple layers

On Main Layer touch events, below is Hud Node work:

-(void) registerWithTouchDispatcher
{
   [[CCDirector sharedDirector].touchDispatcher addTargetedDelegate:self priority:0 swallowsTouches:YES]; 
}
-(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent*)event
{
    //detects touched Object and sends it to hud 

    if (object != nil)
    {
        //sends it to hud
        return true;
    }

    return false;
}
-(void) ccTouchMoved:(UITouch*)touch withEvent:(UIEvent*)event

-(void) ccTouchEnded:(UITouch*)touch withEvent:(UIEvent*)event

-(void) ccTouchCancelled:(UITouch*)touch withEvent:(UIEvent*)event

On Hud CCNode none of ccTouchBegan/moved/ended methods are fired

-(void) registerWithTouchDispatcher
{
  [[CCDirector sharedDirector].touchDispatcher addTargetedDelegate:self priority:0 swallowsTouches:YES];

}
-(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent*)event
{
    if (object!=nil) {
        NSLog(@"Touch began");
        return YES;
    }
    else
        return NO;
}

EDIT:
I have a button to set speed of the object on HUD Node , it has nothing to do with object!=nil because when I put breakpoints I see that -(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent*)event is never called

-(void)speed1Tapped:(id)sender
{
    if (object!=nil) {
        NSLog(@"Moving Object is %@:",object!=nil);
     }
}
On Log I get:
object is <ObjectATC: 0x13763850>

Why ccTouchBegan/moved/ended methods are not fired in CCNode?

How can I handle touches on multiple CCNodes, CCLayers ?

Answer 1

I guess you dont receive touch method because you did not register the touchDipatcher

either in your CCNodes init method or onEnter method try to register it.

//register touches
- (void)onEnter {
    [[[CCDirector sharedDirector] touchDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
    [super onEnter];
}

- (void)onExit {
    [[[CCDirector sharedDirector] touchDispatcher]removeDelegate:self];
    [super onExit];
}