Cocos2dx之AppDelegate類
AppDelegate是一個很重要的類。它只會被調用一次。游戲就是從這個類開始的。這個類的關鍵部分：
１、設計分辨率
有助我們決定我們的Sprite（精靈）對象要多大等。這是基于設備的屏幕尺寸的。AppDelegate與分辨率相關的：
static cocos2d::Size designResolutionSize = cocos2d::Size(480, 320); static cocos2d::Size smallResolutionSize = cocos2d::Size(480, 320); static cocos2d::Size mediumResolutionSize = cocos2d::Size(1024, 768); static cocos2d::Size largeResolutionSize = cocos2d::Size(2048, 1536);
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２、AppDelegate::applicationDidFinishLaunching()
從這個方法開始編碼我們的游戲：
// initialize director auto director = Director::getInstance(); auto glview = director->getOpenGLView(); if(!glview) { #if (CC_TARGET_PLATFORM == CC_PLATFORM_WIN32) || (CC_TARGET_PLATFORM == CC_PLATFORM_MAC) || (CC_TARGET_PLATFORM == CC_PLATFORM_LINUX) glview = GLViewImpl::createWithRect("MyGame", cocos2d::Rect(0, 0, designResolutionSize.width, designResolutionSize.height)); #else glview = GLViewImpl::create("MyGame"); #endif director->setOpenGLView(glview); } // turn on display FPS director->setDisplayStats(true); // set FPS. the default value is 1.0/60 if you don't call this director->setAnimationInterval(1.0f / 60); // Set the design resolution glview->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height, ResolutionPolicy::NO_BORDER); auto frameSize = glview->getFrameSize(); // if the frame's height is larger than the height of medium size. if (frameSize.height > mediumResolutionSize.height) { director->setContentScaleFactor(MIN(largeResolutionSize.height/designResolutionSize.height, largeResolutionSize.width/designResolutionSize.width)); } // if the frame's height is larger than the height of small size. else if (frameSize.height > smallResolutionSize.height) { director->setContentScaleFactor(MIN(mediumResolutionSize.height/designResolutionSize.height, mediumResolutionSize.width/designResolutionSize.width)); } // if the frame's height is smaller than the height of medium size. else { director->setContentScaleFactor(MIN(smallResolutionSize.height/designResolutionSize.height, smallResolutionSize.width/designResolutionSize.width)); } register_all_packages(); // create a scene. it's an autorelease object auto scene = HelloWorld::createScene(); // run director->runWithScene(scene);
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3、Director導演
Director對象控制操作流并通知必要的接受者該做什么。Director的一個重要任務就是控制Scene（場景）的替換和過渡。Director對象是一個共享的單例。
（１）獲取Director實例
// initialize director auto director = Director::getInstance();
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（２）展示場景
// run director->runWithScene(scene);
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（３）替換場景
// use when changing from the running scene to another scene director->replaceScene(scene2);
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（４）暫停游戲
Director::getInstance()->stopAnimation();
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（５）開始游戲
Director::getInstance()->startAnimation();
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（４）、獲取／設置游戲的屬性
// turn on display FPS director->setDisplayStats(true); // set FPS. the default value is 1.0/60 if you don't call this director->setAnimationInterval(1.0f / 60); // set content scale factor director->setContentScaleFactor(...);
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5G游戲 Cocos2D
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版權聲明：本文內容由網絡用戶投稿，版權歸原作者所有，本站不擁有其著作權，亦不承擔相應法律責任。如果您發現本站中有涉嫌抄襲或描述失實的內容，請聯系我們jiasou666@gmail.com 處理，核實后本網站將在24小時內刪除侵權內容。