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POMoving between "pages" ( CCLayer ) in cocos2dx
 

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  1. POMoving between "pages" ( CCLayer ) in cocos2dx
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    <p>I have 2 MyGameScreen objects that extends cocos2d::CCLayer. I am capturing the ccTouchesMove of the first screen so that I can create the moving effect exactly like sliding between pages of iOS application screen.</p> <p>My class is like so:</p> <pre><code>class MyGameScreen: public cocos2d::CCLayer { cocos2d::CCLayer* m_pNextScreen; } bool MyGameScreen::init() { m_pNextScreen = MyOtherScreen::create(); } void MyGameScreen::ccTouchesMoved(CCSet *touches, CCEvent *event){ // it crashes here... on the setPosition... m_pNextScreen is valid pointer though I am not sure that MyOtherScreen::create() is all I need to do... m_pNextScreen-&gt;setPosition( CCPointMake( (fMoveTo - (2*fScreenHalfWidth)), 0.0f ) ); } </code></pre> <p>EDIT: adding clear question</p> <p>It crashed when I try to setPosition on m_pNextScreen...</p> <p>I have no idea why it crashed as m_pNextScreen is a valid pointer and is properly initialized. Could anybody explain why?</p> <p>EDIT: adding progress report</p> <p>I remodelled the whole system and make a <code>class CContainerLayer : public cocos2d::CCLayer</code> that contains both <code>MyGameScreen</code> and <code>MyOtherScreen</code> side by side. However, this looked like not an efficient approach, as when it grows I may need to have more than 2 pages scrollable side by side, I'd prefer to load the next page only when it is needed rather than the entire <code>CContainerLayer</code> that contains all the upcoming pages whether the user will scroll there or not... Do you have any better idea or github open source sample that does this?</p> <p>Thank you very much for your input!</p>
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    1. COwhat is the code in the create method? Does it create an autorelease object which you aren't retaining?
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    2. COit is just typical CCLayer `init()` method, I didn't add anything... it is ok if it is pushed with CCTransitionScene... I am wondering if it is because I do not call `this->addChild(m_pNextScreen)` but the next screen shouldn't be the child of this screen...
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    3. COYou didn't ask a question. What do you want to know?
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      1. POMoving between "pages" ( CCLayer ) in cocos2dx
      1. USLearnCocos2D
 

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