Question

我希望能够在拼贴图上拖动精灵，但是却无法将精灵锁定到拼贴上。首先我有：

- (void)touchMoved:(UITouch *)touch withEvent:(UIEvent *)event{
CGPoint touchLocation = [touch locationInView:touch.view];
touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];
touchLocation = [self convertToNodeSpace:touchLocation];

objectInTouch.position=touchlocation;

}

这不起作用，因为它使用屏幕坐标而不是tilemap？然后我想每个瓷砖是16x16像素，所以我会在精灵（objectInTouch）周围做一个“边框”，并且根据它是否击中顶部，底部，左边或右边，精灵会相应地移动。这是我尝试过的，但我得到“表达不可分配。”

- (void)touchMoved:(UITouch *)touch withEvent:(UIEvent *)event{
CGPoint touchLocation = [touch locationInView:touch.view];
touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];
touchLocation = [self convertToNodeSpace:touchLocation];

int xborder = objectInTouch.position.x+16;
int yborder = objectInTouch.position.y+16;
int xleftborder = objectInTouch.position.x-16;
int ybottomborder = objectInTouch.position.y-16;


if(touchLocation.x >= xborder)
    objectInTouch.position.x = objectInTouch.position.x+16;   -> Expression not assignable
if(touchLocation.y >= yborder)
    objectInTouch.position.y = objectInTouch.position.y+16;   -> Expression not assignable
if(touchLocation.x <= xleftborder)
    objectInTouch.position.x = objectInTouch.position.x-6;;   -> Expression not assignable
if(touchLocation.y <= ybottomborder)
    objectInTouch.position.y = objectInTouch.position.y-16;   -> Expression not assignable


}

哦，如果有人能把我推荐给一些关于这类东西的好书/文件，那就太棒了！

谢谢！

将精灵中心锁定到tilemap的tile中心

0 个答案: