http://www.cocos2d-iphone.org/forum/tags/touches A fast, easy to use, free, and community supported 2D game engine en-US Sat, 31 Jul 2010 07:58:44 +0000 http://bbpress.org/?v=1.0.2 q http://www.cocos2d-iphone.org/forum/search.php http://www.cocos2d-iphone.org/forum/topic/8297#post-48333 Thu, 29 Jul 2010 19:08:14 +0000 dcthatch 48333@http://www.cocos2d-iphone.org/forum/ <p>I thought of apples gesture recognisers, and i can't remember why, but i had some trouble. I will do more research and try again </p> http://www.cocos2d-iphone.org/forum/topic/8297#post-48325 Thu, 29 Jul 2010 18:12:26 +0000 bradparks 48325@http://www.cocos2d-iphone.org/forum/ <p>and actually, i just checked my bookmarks again, and this opensource project:</p> <p><a href="http://code.google.com/p/imoves/" rel="nofollow">http://code.google.com/p/imoves/</a></p> <p>direct download:<br /> <a href="http://imoves.googlecode.com/files/iMovesMaterials.zip" rel="nofollow">http://imoves.googlecode.com/files/iMovesMaterials.zip</a></p> <p>might be closer to what you want, as it's supposedly about how to recognize gestures using the accelerometer</p> <blockquote><p>A system utilizing the accelerometer on the iPhone to recognize gestures. The goal is to allow the visually impaired to operate the iPhone with gestures (proprioception instead of sight), and perhaps help regular people driving, etc. better use the device.</p> </blockquote> http://www.cocos2d-iphone.org/forum/topic/8297#post-48324 Thu, 29 Jul 2010 18:10:07 +0000 bradparks 48324@http://www.cocos2d-iphone.org/forum/ <p>Good point @<a href='http://www.cocos2d-iphone.org/forum/profile/6338'>asinesio</a>... I never thought of that... Gesture recognition may help out indeed... there's a good post on that here:</p> <p><a href="http://www.cocos2d-iphone.org/forum/topic/5270#post-31812" rel="nofollow">http://www.cocos2d-iphone.org/forum/topic/5270#post-31812</a> </p> http://www.cocos2d-iphone.org/forum/topic/8297#post-48316 Thu, 29 Jul 2010 17:23:39 +0000 asinesio 48316@http://www.cocos2d-iphone.org/forum/ <p>@<a href='http://www.cocos2d-iphone.org/forum/profile/14229'>dcthatch</a> - Apple has gesture recognizers in their documentation that work just fine for this, plus good examples. I'd recommend trying those out. </p> http://www.cocos2d-iphone.org/forum/topic/8297#post-48278 Thu, 29 Jul 2010 13:11:27 +0000 dcthatch 48278@http://www.cocos2d-iphone.org/forum/ <p>thankyou, this is very useful and answers my question on how to scale it with the pinch.</p> <p>The problem is that i do not know how to tell if the person is pinching (like holding the option key in the simulator), or dragging with 2 fingers (like holding option+shift in the simulator). Is there any way to do this. </p> http://www.cocos2d-iphone.org/forum/topic/8297#post-48275 Thu, 29 Jul 2010 12:30:45 +0000 bradparks 48275@http://www.cocos2d-iphone.org/forum/ <p>@<a href='http://www.cocos2d-iphone.org/forum/profile/11843'>pagex</a> posted an example of pinching/zooming much like fieldrunners a bit ago... it may help....</p> <p><a href="http://www.cocos2d-iphone.org/forum/topic/7843" rel="nofollow">http://www.cocos2d-iphone.org/forum/topic/7843</a> </p> http://www.cocos2d-iphone.org/forum/topic/8297#post-48266 Thu, 29 Jul 2010 10:58:38 +0000 dcthatch 48266@http://www.cocos2d-iphone.org/forum/ <p>I have looked at the pages that i could find on google, but i have found nothing that i can use. What i want to do is to detect a pinch gesture and then zoom my TMXTiledMap. The problem is that i am already using scroll method when 2 touches occur and move. I would like to be able to keep this and use a pinch gesture to zoom. Are there any suggestions? Any help will be much appreciated</p> <p>thanks </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48258 Thu, 29 Jul 2010 07:39:52 +0000 indy2005 48258@http://www.cocos2d-iphone.org/forum/ <p>Thanks...will post back for my own understanding </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48219 Thu, 29 Jul 2010 01:12:36 +0000 Mark 48219@http://www.cocos2d-iphone.org/forum/ <p>indy2005,</p> <p>I'd recommend, if you are a little unsure about how things are executing, to just pepper that touchesTest project with CCLOG statements where you'd like to see what's going on.. Then watch the debugging console to see when and where those log statements are run.</p> <p>There's always a better way, but, sometimes when I want to drill in and make sure I understand the order of execution, I use this macro:<br /> <pre><code>//#define LOGTHIS {}; #define LOGTHIS {(CCLOG(@&quot;\t\t[%@ - %@]&quot;, self, NSStringFromSelector(_cmd)));}</code></pre> <p>and just put:<br /> <code>LOGTHIS;</code><br /> wherever I want to verify what's being executed when. It just prints the method name wherever it's put. It's been helpful to me every now and then.</p> <p>There's another one I had that would send console messages whenever there was a notification event, like onOrientationChanged, or appDidFinishLaunching, or the like.. can't find that one right now.</p> <p>Anyway, like I said, just log it.. it will help you understand the flow of the program.<br /> HTH,</p> <p>-Mark </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48210 Wed, 28 Jul 2010 23:50:53 +0000 indy2005 48210@http://www.cocos2d-iphone.org/forum/ <p>Hi,</p> <p>Its one of those elusive things for me. Everyone always refers to Paddles as the ultimate learning tool for the touch dispatcher, but in terms of priorities, swallows and claims....its all a bit of a black art in terms of how they all interact.</p> <p>I guess it doesnt help comin straight into Cocos2d without first learning basic iPhone dev!</p> <p>Thanks</p> <p>i </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48208 Wed, 28 Jul 2010 22:27:51 +0000 Mark 48208@http://www.cocos2d-iphone.org/forum/ <p>indy2005,<br /> Not positive about the same priority.. if that's the case, I would assume it goes by who registered the touch handler first, but you could always take a look at the implementation, or just mock something up and mess with it to see what the results are. That's the best way to figure out what is going on. You could take the TouchesTest from the 0.94 project, and play around with it to see what the results are.. put some more CCLOG's in there if you are confused about the order of events. Maybe add more paddles, on top of the other paddles, change the touch handler priority and swallowsTouches values, and see what happens. </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48204 Wed, 28 Jul 2010 21:54:26 +0000 indy2005 48204@http://www.cocos2d-iphone.org/forum/ <p>Hi,</p> <p>Thanks, sorry to labour the point (I'm a bit thick!!). If I have two delegates, each with the same priority, and both swallows touches....how does that work? How is this related to "claiming a touch" in TouchesBegan. How does this get affected by multi-touch?!</p> <p>Regards</p> <p>i </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48202 Wed, 28 Jul 2010 21:31:27 +0000 Mark 48202@http://www.cocos2d-iphone.org/forum/ <p>Exactly,</p> <p>lower number (higher priority) gets to see the touch first, swallow decides if the touch gets passed along to the next touch handler or not.</p> <p>-Mark </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48189 Wed, 28 Jul 2010 20:35:04 +0000 indy2005 48189@http://www.cocos2d-iphone.org/forum/ <p>Thanks, so does priority indicate which touch dispatchers get passed the touch first? i.e. which get first opportunity to "swallow".</p> <p>ANd what does swallow mean, does it mean if you return "yes" in TouchesBegan and "claim the touch" no other delegate receives it? or is "Swallow" a different concept to this claiming of a touch (no dirty swallow jokes please)?</p> <p>Regards</p> <p>i </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48176 Wed, 28 Jul 2010 19:36:43 +0000 Mark 48176@http://www.cocos2d-iphone.org/forum/ <p>@<a href='http://www.cocos2d-iphone.org/forum/profile/2043'>indy2005</a>,</p> <p><a href="http://www.cocos2d-iphone.org/api-ref/latest-stable/interface_c_c_touch_dispatcher.html">CCTouchDispatcher Class Reference</a></p> <p>Priority: lower number = higher priority. That's why in some examples, you'll see the priority set to INT_MIN + 1 or something similar, so you can be sure you are giving the highest priority to that touch handler</p> <p>Swallows touches: If you set it to YES, the touch get's 'swallowed', and not propogated to another object.</p> <p>-Mark </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48173 Wed, 28 Jul 2010 19:17:58 +0000 indy2005 48173@http://www.cocos2d-iphone.org/forum/ <p>bump ;-) </p> http://www.cocos2d-iphone.org/forum/topic/8259#post-48055 Tue, 27 Jul 2010 20:52:50 +0000 indy2005 48055@http://www.cocos2d-iphone.org/forum/ <p>Hi,</p> <p>Could anyone explain, in a nutshell, the use of the SwallowsTouches and Priority settings?</p> <pre><code>- (void)onEnter { [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES]; [super onEnter]; }</code></pre> <p>Regards</p> <p>i </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47493 Fri, 23 Jul 2010 16:59:26 +0000 edge17 47493@http://www.cocos2d-iphone.org/forum/ <p>@<a href='http://www.cocos2d-iphone.org/forum/profile/2043'>indy2005</a>: i'd assume touches would register as long as isTouchEnabled=YES </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47491 Fri, 23 Jul 2010 16:50:59 +0000 indy2005 47491@http://www.cocos2d-iphone.org/forum/ <p>both work great by the way, so thx. Dont think its an overhead as its just one HUD sprite, sat under a visible sprite (dont ask) </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47489 Fri, 23 Jul 2010 16:48:12 +0000 indy2005 47489@http://www.cocos2d-iphone.org/forum/ <p>if something is visible = NO, I assume you can still do rect intersections? </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47485 Fri, 23 Jul 2010 16:34:24 +0000 edge17 47485@http://www.cocos2d-iphone.org/forum/ <p>I think you might be better off setting sprite.visible=NO. I think changing opacity still incurs overhead from the blending operation, whereas visible=NO won't bother attempting to render the sprite. Someone please feel free to correct me if I'm wrong, I'm not any kind of expert in openGL </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47480 Fri, 23 Jul 2010 15:45:19 +0000 Neo-Dragon 47480@http://www.cocos2d-iphone.org/forum/ <p>I use spritename.opacity=0; to hide any sprites. </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47471 Fri, 23 Jul 2010 14:57:32 +0000 indy2005 47471@http://www.cocos2d-iphone.org/forum/ <p>thanks, whats the best method to make something transparent? </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47460 Fri, 23 Jul 2010 13:40:25 +0000 riq 47460@http://www.cocos2d-iphone.org/forum/ <p>yes. the concept of touches is not associated with visibility. </p> http://www.cocos2d-iphone.org/forum/topic/8152#post-47457 Fri, 23 Jul 2010 13:27:04 +0000 indy2005 47457@http://www.cocos2d-iphone.org/forum/ <p>Can something be invisible, or have its alpha set to zero (or be a transparent png) and still receive touches?</p> <p>Regards</p> <p>i </p> http://www.cocos2d-iphone.org/forum/topic/7624#post-44658 Sun, 04 Jul 2010 00:49:12 +0000 kpen 44658@http://www.cocos2d-iphone.org/forum/ <p>Thanks Joethemonkey,</p> <p>However I am not sure that this explains how to tell which sprite was touched (it seems to only show how to get all touches and events globally without explaining how to determine which sprite was touched). </p> http://www.cocos2d-iphone.org/forum/topic/7624#post-44648 Sat, 03 Jul 2010 23:36:57 +0000 Joethemonkey101 44648@http://www.cocos2d-iphone.org/forum/ <p><a href="http://www.cocos2d-iphone.org/wiki/doku.php/tips:touchdelegates?s=standard" rel="nofollow">http://www.cocos2d-iphone.org/wiki/doku.php/tips:touchdelegates?s=standard</a> </p> http://www.cocos2d-iphone.org/forum/topic/7624#post-44645 Sat, 03 Jul 2010 23:27:00 +0000 kpen 44645@http://www.cocos2d-iphone.org/forum/ <p>Hello everyone,</p> <p>I am very new to Cocos2d so please be gentle. I know there are hundreds of posts about this subject and most of them indicate that one should look into the "Touches Dispatcher". I understand that this dispatcher can implement the "standard" method or a "targeted" method by which individual nodes register and receive touch events via ccTouchBegan and the like...</p> <p>While I have no problem with this, I am trying to implement code by which individual sprites can be multi-touched for purposes of rotate, translate and scale. Several posts have indicated that pinching and rotating are not supported via targeted dispatch and that one should pursue the standard dispatch methods if pinching and rotating need to be supported.</p> <p>So my question is... When using the standard dispatch, how does one determine which sprite has received the touch?</p> <p>Thanks for any guidance here. </p> http://www.cocos2d-iphone.org/forum/topic/7615#post-44589 Sat, 03 Jul 2010 11:50:51 +0000 mrTortex 44589@http://www.cocos2d-iphone.org/forum/ <p>Ignore me, I was just being an idiot. :) Have it working. </p> http://www.cocos2d-iphone.org/forum/topic/7615#post-44582 Sat, 03 Jul 2010 09:48:29 +0000 mrTortex 44582@http://www.cocos2d-iphone.org/forum/ <p>Hello.</p> <p>At the very high risk of looking like a complete idiot, I need to ask the following. :)</p> <p>I'm using SpaceManager, after getting some help from QCMat_ on the IRC yesterday (thanks again) and reading as much as I can find and grasp I've managed to get physics working in my test level, and I'm very happy.</p> <p>Today my goal is to apple impulses to my single object. Looking at this:</p> <p><a href="http://code.google.com/p/chipmunk-spacemanager/wiki/Introduction" rel="nofollow">http://code.google.com/p/chipmunk-spacemanager/wiki/Introduction</a></p> <p>makes it seem very simple, and in my test case it's simpler still, simply press the screen and apply a quick impulse to keep an object in the air. No touches and it hits the floor, simple yes? My problem is that I have a standard init method with the standard set up for a cocos layer, I add objects to this layer, they display, I then a method which configures spacemanager, all good. When I come to using this method however:</p> <pre><code>- (BOOL)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { CGPoint pt = [self convertTouchToNodeSpace:[touches anyObject]]; CGPoint forceVect = ccpSub(pt, ballSprite.position); [ballSprite applyImpulse:ccpMult(forceVect, 100)]; return kEventHandled; }</code></pre> <p>changing the specifics to match my level objects, I get 'xObject is undeclared'. In other words, I've created the object in the spacemanager setup method, and so it can't be seen by the touches method.</p> <p>Should I create the objects in the header file, synthesize them, then point everything to those variables? That's what I'd do in Flash, but I can't figure that one out in Cocoa. :)</p> <p>I'll try to post code later, main system is having a new PSU fitted.</p> <p>Thanks.</p> <p>p.s. Apologies for not putting this in the physics section. </p>