如何使用CCTouchMoved在cocos2d中以速度/速度拖动CCSprite？

Question

我有一个精灵，我想通过用手指在屏幕上移动来移动它〜拖动。 我希望我的精灵以速度移动，这意味着不要像我的手指移动一样快。

看起来像这个视频：http://www.youtube.com/watch?v=Vair3CIxZEw（从0:12到0:53）

这是我的ccTouch代码。我怎样才能让它移动看起来更顺畅？

谢谢!!! ：）

只需返回TRUE

-(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
    return TRUE;  
}

和

-(void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event {
    CGPoint touchLocation = [self convertTouchToNodeSpace:touch];

    CGPoint oldTouchLocation = [touch previousLocationInView:touch.view];
    oldTouchLocation = [[CCDirector sharedDirector] convertToGL:oldTouchLocation];
    oldTouchLocation = [self convertToNodeSpace:oldTouchLocation];


    CGPoint translation = ccpSub(touchLocation, oldTouchLocation);
    if (CGRectContainsPoint(_car.boundingBox, touchLocation)) {            
        CGPoint newPos = ccpAdd(_car.position, translation);
        _car.position = newPos;
    }
}

Answer 1

尝试使用CCMoveTo操作来平稳移动

CGPoint translation = ccpSub(touchLocation, oldTouchLocation);
if (CGRectContainsPoint(_car.boundingBox, touchLocation)) {
    CGPoint newPos = ccpAdd(_car.position, translation);
    id moveAction = [CCMoveTo actionWithDuration:0.5f position:newPos];
    [_car runAction:moveAction];
}