CODEWITHSUNDEEP
cocos2d-iphonemulti-touchcclayer
Agustin
Agustin

Reputation: 173

cocos2d how do I prevent multi touch propagation to previous layers?

I'm handling the touches manualy through a class that holds every touchable sprite. Also, every menu is a CCLayer, and when I change from one menu to the other, I use the CCTransition### and get the new scene.

So, the layers are "still there" and when I touch one menu, the previous layer also receive it... like when I start the game in a new CCLayer, and then the menus are still affected for the multi touch...

If I use single touch, I can swallow the touches, but the game must have multi touch...

What can I do? Thank you all!

Upvotes: 0

Views: 1850

Answers (3)

Emmy
Emmy

Reputation: 3999

You can set up the priority to 0 for the top layer and priority to 1 for the layer under it like this.

[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];

Upvotes: 1

Anselm Scholz
Anselm Scholz

Reputation: 478

You could try to use the property

self.isTouchEnabled = NO;

within the layer, you don't want to receive touches.

If you you use CCButton objects you need to disable them.

I hope it helps...

Greetings Anselm

Upvotes: 0

mweathers
mweathers

Reputation: 951

You need to consume the touch event in whatever layer needs it. After a layer consumes it, the touch will no longer be propagated to "previous" layers.

http://www.cocos2d-iphone.org/api-ref/0.9.0-beta/_c_c_touch_delegate_protocol_8h_source.html

To consume a touch event, you return YES in the ccTouchBegan delegate method.

EDIT: changed method name to match CCStandardTouchDelegate

- (BOOL)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
   if (condition)
      return YES;
   else 
      return NO;
}

Upvotes: 1

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