Cocos2d 在路径上移动动画 [英] Cocos2d move animation on a path

问题描述

是否可以在 Cocos2d 中创建移动动画，沿特定路径运行?

Is it possible in Cocos2d to create a move animation that would go on a specific path?

例如，如果我需要一个物体在圆弧或整圆上移动，我应该怎么做?

For example, how should I do if I need an object to move on an arc or full circle?

问候！

推荐答案

当然你可以这样做:

    ccBezierConfig bezier;
    bezier.controlPoint_1 = ccp(320,0); // control point 1 
    bezier.controlPoint_2 =ccp(0,0); // control point 2
    bezier.endPosition = ccp(endPoint.x,endPoint.y) ;
    id bezierForward = [CCBezierTo actionWithDuration:3 bezier:bezier];
    [ball runAction:bezierForward];

您可以使用 ccBezier 移动曲线中的任何节点:

you can use ccBezier to move any node in curves :

现在动画部分:

    [[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"eggAnimation.plist"];        
    spriteSheet = [CCSpriteBatchNode batchNodeWithFile:@"eggAnimation.png"];
    [gameBackgroundLayer addChild:spriteSheet];
    eggAnimFrames = [NSMutableArray array];
    for ( int i = 1; i <= 10; i++ )  
    {
        [eggAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:@"%d.png", i]]];
    }
    rotateAnim = [CCAnimation animationWithFrames:eggAnimFrames delay:0.05f];
    ball = [CCSprite spriteWithSpriteFrameName:@"1.png"];
    ball.position=ccp(160,80);
    rotateAction =[CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:rotateAnim restoreOriginalFrame:YES]];
    [spriteSheet addChild:ball];

参考链接:http:///www.raywenderlich.com/1271/how-to-use-animations-and-sprite-sheets-in-cocos2d

http://www.math.ubc.ca/~cass/gfx/bezier.html

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