CCSprite高效动画

Question

我正在动画3个图像(精灵)从屏幕外的权利到屏幕的中间。我已经写了下面的代码，但我想知道是否有更有效的编码方法。

-(void) displayMenu
{
    CGSize screenSize = [[CCDirector sharedDirector] winSizeInPixels];

    CCSprite* menuItemBottle = [CCSprite spriteWithFile:@"btn_i_have_norm.png"];
    menuItemBottle.position = ccp((screenSize.width * 2), 600.0f);
    menuItemBottle.contentSize = screenSize;
    menuItemBottle.scale = 1;
    [self addChild:menuItemBottle z:0 tag:4];

    CCSprite* menuItemAdvert = [CCSprite spriteWithFile:@"btn_see-ad_norm.png"];
    menuItemAdvert.position = ccp((screenSize.width * 2), 500.0f);
    menuItemAdvert.contentSize = screenSize;
    menuItemAdvert.scale = 1;
    [self addChild:menuItemAdvert z:0 tag:5];

    CCSprite* menuItemNoBottle = [CCSprite spriteWithFile:@"btn_dont-have_norm.png"];
    menuItemNoBottle.position = ccp((screenSize.width * 2), 400.0f);
    menuItemNoBottle.contentSize = screenSize;
    menuItemNoBottle.scale = 1;
    [self addChild:menuItemNoBottle z:0 tag:6];

    CGPoint newPointBottle = CGPointMake(screenSize.width * 0.5f + 50, 600.0f);
    CCMoveTo *moveBottle = [CCMoveTo actionWithDuration:0.7f position:newPointBottle];
    CCSequence *sequenceBottle = [CCSequence actions:moveBottle, nil];
    [menuItemBottle runAction:sequenceBottle];

    CGPoint newPointAdvert = CGPointMake(screenSize.width * 0.5f + 50, 500.0f);
    CCMoveTo *moveAdvert = [CCMoveTo actionWithDuration:0.7f position:newPointAdvert];
    CCSequence *sequenceAdvert = [CCSequence actions:moveAdvert, nil];
    [menuItemAdvert runAction:sequenceAdvert];

    CGPoint newPointNoBottle = CGPointMake(screenSize.width * 0.5f + 50, 400.0f);
    CCMoveTo *moveNoBottle = [CCMoveTo actionWithDuration:0.7f position:newPointNoBottle];
    CCSequence *sequenceNoBottle = [CCSequence actions:moveNoBottle, nil];
    [menuItemNoBottle runAction:sequenceNoBottle];

}

Answer 1

您应该能够将所有操作压缩到一行中。第一个文件最终将如下所示：

[menuItemBottle运行操作:CCMoveTo actionWithDuration:0.7f位置:ccp(screenSize.width* 0.5f + 50,600.0f)]；

如果你更喜欢定义动作之外的位置，那么你可以继续这样做。仅供参考，当你想要在同一对象上连续运行动作时(例如，移动动作运行，当它完成时，旋转动作运行)，CCSequence就是这样的。

另外，我不认为你需要为每个图像设置比例为1，因为我认为它已经设置为1。