Gesture recognizers and segues « cocos2d for iPhone

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Gesture recognizers and segues

(3 posts) (2 voices)

Started 3 months ago by Targaryen
Latest reply from Bill Hollings

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Targaryen
Member

Hi! i've found this post (http://www.cocos2d-iphone.org/forum/topic/16450) to use gestures in my 3DView, but i'm having some trouble with touch events and all that stuff in my app; even if this post helps me a lot, i still need some help: What i want it's to have in my view, a little square that when i make 2 taps in it (with finger) then it activates the segue and changes the viewcontroller.

I know that to control where i want to tap i can use the – locationOfTouch:inView: method (but i don't know very well where to implement exactly this), and i know how to add the UITapGestureRecognizer to my 3DViewController (but should i attach it to a Layer instead of being attached to the viewcontroller?? I'm building a MultiView aplication with the Storyboard).

But I've some trouble with the selector (the parameter that selects the action that it's realizated when i use that gesture. That parameter it's in the -initWithTarget:Action: method from UITapGestureRecognizer), should i create a method in my 3DControllerView to create a segue(to change the View from my 3DViewController to the one i want)? or, can i just use the -performSegueWithIdentifier:sender: method? and how i use this last one?

Thanks, Miguel

Posted 3 months ago #
Targaryen
Member

Hi! i've been looking for info about CC3World, CC3Layer and the Touch recognizers, and after a while i think i've solved most of the problem. First, instead of touching a CC3Layer, i erased that Layer to create a CC3Ground that it's much more useful because my objects (dices) need to rebound somewhere. Then for the Ground, i used the -(void) touchGroundAt: (GCPoint) touchPoint method that comes in the Mash up demo to recognize the touch, in the bottom right corner of the screen but i still don't know how to recognize taps with this method, and how can i make a segue once i've recogniced the taps.

As i've seen the code, i've not seen the UIGestureRecognizer to get the touches from the CC3World, and i'd like to know how to use it.
For more details of my app, i use a Fixed cam unable to move that is looking perpendicular to the ground.

And one last Question, when i create the Ground, is it finite? i mean, if i launch my dices will they "fall"? when they reach one side of the screen or will they be rebounded as if there would be a wall in every side? this question isn't especified anywhere on the demos or in the main web http://brenwill.com/2011/cocos3d-programming-guide/#TouchEvents

Greetins, Miguel

Posted 3 months ago #
Bill Hollings
Moderator

@Targaryen

Have a look at how the dice and textured cube are rotated from touch-move events in the CC3DemoMashUp. Also...the CC3Demo3DTiles has some similar code.

Regarding your last question, cocos3d does not come with a physics engine. So the dice will not interact with the ground plane you are creating. You have to move the dice, and have them interact with the ground yourself.

Gray Olson has a code project to integrate cocos3d with Bullet. Do a search on this forum for more on that.

...Bill

Posted 3 months ago #

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