触摸旋转精灵-Cocos2d

问题描述

| 有没有人有更好的方法来用一根手指旋转精灵?我的问题是,在将精灵完全旋转两次之后,我无法使它停止旋转,我会周期性地将屏幕翻转180度(self.rotation = 180;),然后再将其翻转回(self.rotation = 0)。但是,当我将其翻转到180度时,子画面将无法正确旋转。 有谁比这更好的主意?
CGFloat gRotation;

- (void)update:(ccTime)delta
{
    g.rotation = gRotation;
}
    - (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
    {
        UITouch *touch = [touches anyObject];
        CGPoint location = [touch locationInView:[touch view]];
        location = [[CCDirector sharedDirector] convertToGL:location];

        if (CGRectContainsPoint(g.boundingBox,location))
        {
            CGPoint firstLocation = [touch previousLocationInView:[touch view]];
            CGPoint location = [touch locationInView:[touch view]];

            CGPoint touchingPoint = [[CCDirector sharedDirector] convertToGL:location];
            CGPoint firstTouchingPoint = [[CCDirector sharedDirector] convertToGL:firstLocation];

            CGPoint firstVector = ccpSub(firstTouchingPoint,g.position);
            CGFloat firstRotateAngle = -ccpToAngle(firstVector);
            CGFloat previousTouch = CC_RADIANS_TO_DEGREES(firstRotateAngle);

            CGPoint vector = ccpSub(touchingPoint,g.position);
            CGFloat rotateAngle = -ccpToAngle(vector);
            CGFloat currentTouch = CC_RADIANS_TO_DEGREES(rotateAngle);

            gRotation += currentTouch - previousTouch;
        }
    }
谢谢 编辑: 我进入GameConfig.h并将
#define GAME_AUTOROTATION kGameAutorotationUIViewController
更改为
#define GAME_AUTOROTATION kGameAutorotationNone
然后,进入AppDelegate.m并将
#if  GAME_AUTOROTATION == kGameAutorotationUIViewController
更改为
#if GAME_AUTOROTATION == kGameAutorotationNone
当我翻转屏幕时,可以固定精灵的旋转,但是在旋转两整圈后仍然无法阻止精灵的旋转。     

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