Sliding a CCMenu - cocoa

Question

I have a Menu ("myMenu") containing CCMenuItemImages. I would like this menu to detect finger swipes and slide accordingly.
My problem is that the CCMenuItemImages seem to absorb the touch event. The swipe works fine when the user touches the menu outside of the CCMenuItemImages, but not when the touch happens on these.
I have tried to put my menu items in a layer to detect touches (refering to answer Scrollable menu using MenuItem's), but this doesn't seem to work either. Any idea why ?
+(id) scene
{
CCScene *scene = [CCScene node];
ModeMenuScene *layer = [ModeMenuScene node];
[scene addChild: layer];
return scene;
}
-(id) init
{
if( (self=[super init] )) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
CCSprite *background = [CCSprite spriteWithFile:#"bg.png"];
background.position=ccp(winSize.width/2,winSize.height/2);
[self addChild:background];
mode1 = [CCMenuItemImage itemFromNormalImage:#"Mode1.png" selectedImage: #"Mode1.png" target:self selector:#selector(goToMode1:)];
mode1label = [CCLabelTTF labelWithString:[NSString stringWithFormat:#"Level 1 %d", n] dimensions:CGSizeMake(220,53) alignment:UITextAlignmentCenter fontName:#"Arial" fontSize:20.0];
mode1label.color = ccc3(167,0,0);
mode1label.position=ccp(55,-30);
[mode1 addChild:mode1label];
// here same kind of code to define mode2,mode3,mode4 (taken out to reduce size of code)
myMenu=[CCMenu menuWithItems:mode1,mode2,mode3,mode4,nil];
[myMenu alignItemsHorizontallyWithPadding:25];
myMenu.position=ccp(winSize.width/2+40,180);
menuLayer = [CCLayer node];
[menuLayer addChild:myMenu];
[self addChild:menuLayer];
[self enableTouch];
}
return self;
}
-(void) disableTouch{
self.isTouchEnabled=NO;
menuLayer.isTouchEnabled=NO;
}
-(void) enableTouch{
self.isTouchEnabled=YES;
menuLayer.isTouchEnabled=YES;
}
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(location.y>100 && location.y<260) {
draggingMenu=1;
x_initial = location.x;
}
else draggingMenu=0;
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(draggingMenu==1) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
int x = myMenu.position.x+location.x-x_initial;
x = MAX(0,x);
x = MIN(x,winSize.width/2+40);
myMenu.position=ccp(x,180);
x_initial=location.x;
}
}
- (void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
draggingMenu=0;
}
- (void)dealloc {
[super dealloc];
}
#end

Answer 1

Solved it by adding :
-(void) registerWithTouchDispatcher
{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:NO];
}
the problem was that CCMenuItemImage swallows the touches and has a high priority set at -128. Thus the need to set priority at INT_MIN+1