cocos2d 总结：一

1:在创建CCLayer的子类时，默认的情况下，不能响应触摸事件

在-(id)init {  }打开事件处理：

    // enable touch input

       self.isTouchEnabled = YES;

      

       // enable accelerometer input

       self.isAccelerometerEnabled = YES;

 

 

-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

}

 

-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event

{

     

}

 

-(void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

 

}

 

-(void) ccTouchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event

{

   

}

 

// Accelerometer Input Events

-(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration

{

    CCLOG(@"acceleration: x:%f / y:%f / z:%f", acceleration.x, acceleration.y, acceleration.z);

}

 

2:放大缩小一个CCSprite* 对象

   //屏幕的大小

    CGSize size = [[CCDirector sharedDirector] winSize];

    CCSprite* background = [CCSprite spriteWithFile:@"Default.png"];

       background.position = CGPointMake(size.width / 2, size.height / 2);

       // scaling the image beyond recognition here

       background.scaleX = 30;

       background.scaleY = 3;

       [self addChild:background];

 

3:创建一个CCLabel对象

    // creating another label and aligning it at the top-right corner of the screen

       CCLabel* labelAligned = [CCLabel labelWithString:@"I'm topright aligned!" fontName:@"HiraKakuProN-W3" fontSize:20];

       labelAligned.position = CGPointMake(size.width, size.height);

       labelAligned.anchorPoint = CGPointMake(1, 1);

       [self addChild:labelAligned];

4:制定定时任务

// this will have the -(void) update:(ccTime)delta method called every frame

       //[self scheduleUpdate];  //相当于[self schedule:@selector(update:) interval:0.0];

       [self schedule:@selector(update:) interval:0.1f];

 

-(void) update:(ccTime)delta

{

    // called every frame thanks to [self scheduleUpdate]

   

    // unschedule this method (_cmd is a shortcut and stands for the current method) so it won't be called anymore

//取消定时任务

    [self unschedule:_cmd];// :_cmd:是个什么对象呢？？？

   

    CCLOG(@"update with delta time: %f", delta);

   

    // re-schedule update randomly within the next 10 seconds

    float nextUpdate = CCRANDOM_0_1() * 10;  // CCRANDOM_0_1():取得0-1之间的随机数

    [self schedule:_cmd interval:nextUpdate];

}

 

5:坐标转换——－将UIView中的点击坐标转换为OpenGl的坐标

 

-(CGPoint) locationFromTouches:(NSSet *)touches

{

    UITouch *touch = [touches anyObject];

    CGPoint touchLocation = [touch locationInView: [touch view]];

    return [[CCDirector sharedDirector] convertToGL:touchLocation];

}

 

6:特效场景转换

 

   CCScene* scene = [MenuScene scene];

   

//创建特效

    CCFadeTransition* transitionScene = [CCFadeTransition transitionWithDuration:3 scene:scene withColor:ccRED];

    CCFadeTRTransition* transitionScene = [CCFadeTRTransition transitionWithDuration:3 scene:scene];

    CCRotoZoomTransition* transitionScene = [CCRotoZoomTransition transitionWithDuration:3 scene:scene];

    CCShrinkGrowTransition* transitionScene = [CCShrinkGrowTransition transitionWithDuration:3 scene:scene];

    CCTurnOffTilesTransition* transitionScene = [CCTurnOffTilesTransition transitionWithDuration:3 scene:scene];

 

//导演对象转换场景

[[CCDirector sharedDirector] replaceScene:transitionScene];

 

7:创建菜单

 

-(void) createMenu:(ccTime)delta

{

    // unschedule the selector, we only want this method to be called once

    [self unschedule:_cmd];

   

    CGSize size = [[CCDirector sharedDirector] winSize];

   

    // set CCMenuItemFont default properties

    [CCMenuItemFont setFontName:@"Helvetica-BoldOblique"];//设置字体

    [CCMenuItemFont setFontSize:40];//设置大小

   

    // create a few labels with text and selector

    CCMenuItemFont* item1 = [CCMenuItemFont itemFromString:@"Go Back!" target:self selector:@selector(menuItem1Touched:)];

   

    // create a menu item using existing sprites

    CCSprite* normal = [CCSprite spriteWithFile:@"Icon.png"];

    normal.color = ccRED;

    CCSprite* selected = [CCSprite spriteWithFile:@"Icon.png"];

    selected.color = ccGREEN;

    CCMenuItemSprite* item2 = [CCMenuItemSprite itemFromNormalSprite:normal selectedSprite:selected target:self selector:@selector(menuItem2Touched:)];

   

    // create a toggle item using two other menu items (toggle works with images, too)

    [CCMenuItemFont setFontName:@"STHeitiJ-Light"];

    [CCMenuItemFont setFontSize:40];

    CCMenuItemFont* toggleOn = [CCMenuItemFont itemFromString:@"I'm ON!"];

    CCMenuItemFont* toggleOff = [CCMenuItemFont itemFromString:@"I'm OFF!"];

    CCMenuItemToggle* item3 = [CCMenuItemToggle itemWithTarget:self selector:@selector(menuItem3Touched:) items:toggleOn, toggleOff, nil];

   

    // create the menu using the items

    CCMenu* menu = [