iPhone 開發筆記17: cocos2d 圖片動畫效果

A. 新增 cocos2d Application Project.

B. 在 HelloWorldScene.m:
-(id) init
{
    // always call "super" init
    // Apple recommends to re-assign "self" with the "super" return value
    if( (self=[super init] )) {
        ....
        // 從左上角往右下角切割圖檔
        //CCSprite *sprite = [CCSprite spriteWithFile:@"Icon.png" rect:CGRectMake(20, 20, 57, 57)];

        CCSprite *sprite = [CCSprite spriteWithFile:@"Icon.png"]; // source size
        sprite.position = ccp(240, 50);
   

        /* 動畫效果: case01 -> normal */

        id action =
        // (1). CCJumpTo: 跳躍至絕對座標
        // [CCJumpTo actionWithDuration:2 position:ccp(300,0) height:50 jumps:4]; // -> 300, 0

        // (2). CCJumpBy: 跳躍至相對座標(以原始座標累加距離的跳躍)
        // [CCJumpBy actionWithDuration:2 position:ccp(300,0) height:50 jumps:4]; // -> 540, 50

        // (3). CCRotateTo: 旋轉
        // [CCRotateTo actionWithDuration:2 angle:180];
       
        // (4). 淡入
        // [CCFadeIn actionWithDuration:2];
       
        // (5). 淡出
        // [CCFadeOut actionWithDuration:2];
       
        // (6). 移至絕對座標
        // [CCMoveTo actionWithDuration:2 position: ccp(100, 100)];
       
        // (7). 移至相對座標
        // [CCMoveBy actionWithDuration:2 position: ccp(100, 100)]; // 340, 150

        // 混合動作
        // (8). CCSequence: one by one (連續動作)
        [CCSequence actions:
        // [CCRotateTo actionWithDuration:2 angle:180], // ---> error with reverse happend?
        [CCRotateBy actionWithDuration:2 angle:180],
        [CCJumpBy actionWithDuration:2 position:ccp(300,0) height:50 jumps:4],
        [CCFadeOut actionWithDuration:2],
        [CCCallFunc actionWithTarget:self selector:@selector(callback1)],
        nil];

        // 混合動作
        // (9). CCSpawn: do it the sametime (同時動作)
        /*
         [CCSpawn actions:
         [CCRotateTo actionWithDuration:2 angle:180], // ---> error with reverse happend?
         [CCRotateBy actionWithDuration:2 angle:180],
         [CCJumpBy actionWithDuration:2 position:ccp(300,0) height:50 jumps:4],
         [CCFadeOut actionWithDuration:2],
         [CCCallFunc actionWithTarget:self selector:@selector(callback1)],
         nil];
         */

        /* 動畫效果: case02 -> repeat */
        // (10). CCRepeatForever: 無限重複執行
        // CCRepeatForever *repeat = [CCRepeatForever actionWithAction:action];
       
        // (11). CCRepeat: 重複執行
        // CCRepeat *repeat = [CCRepeat actionWithAction:action times:2];

        /* 動畫效果: case03 -> reverse */
        // (12). reverse: 反向執行
        // id t_reverse = [CCSequence actions:action, [action reverse], nil];

        // runAction
        // case 1: for normal
        [sprite runAction:action];
       
        // case 2: for repeat
        // [sprite runAction:repeat];
       
        // case 3: for reverse
        // [sprite runAction:t_reverse];

        [self addChild: sprite];
    }
    return self;
}


- (void) callback1
{
    CCLabel *labelEnd = [CCLabel labelWithString:@"Game Over" fontName:@"Marker Felt" fontSize:64];
   
    CGSize size = [[CCDirector sharedDirector] winSize];
   
    // position the label on the center of the screen
    labelEnd.position = ccp( size.width /2 , size.height/2 - 100 );
   
    [self addChild: labelEnd];
}