Objective c 在我的游戏中，有什么更好的碰撞方法？

当角色与障碍物碰撞时，游戏结束。这在技术上是可行的，但我需要解决的问题是，角色能够与障碍物重叠，甚至可以在不结束游戏的情况下逃脱。为了让比赛结束，这两者需要真正的重叠

现在我认为问题可能是因为它们在同一位置碰撞。如果它们必须具有相同的位置，这是否意味着当它们的

中心点/像素

相遇时，位置到底是什么？它是图像的中心还是图像的边缘

像素

我真的很挣扎，想得到一些帮助。谢谢大家!

//CHARACTER COLLISION

-(void)checkGameOver{
if(GAMESTART){
    if(flyCopter.position.x >= CGRectGetMaxX(self.frame) - flyCopter.copterWidth/2 - 6){
      [self showOver];
    }

    if(flyCopter.position.x <= CGRectGetMinX(self.frame) + flyCopter.copterWidth/2 + 6){
      [self showOver];
    }

    [self compareCP:blockTmp1 :flyCopter];
    [self compareCP:blockTmp2 :flyCopter];
    if(flyCopter.position.y <= blockTmp1.position.y - 0 + blockTmp1.size.height + 0)
    if(flyCopter.position.x <= blockTmp1.position.x +20 + blockTmp1.size.width + 0)
    //if(flyCopter.position.y <= blockTmp2.position.y + blockTmp2.size.height)
    //if(flyCopter.position.x <= blockTmp2.position.x + blockTmp2.size.width)
    //if(flyCopter.position.y <= blockTmp3.position.y + blockTmp3.size.height)
    //if(flyCopter.position.x <= blockTmp3.position.x + blockTmp3.size.width)
    //if(flyCopter.position.y <= blockTmp4.position.y + blockTmp4.size.height)
    //if(flyCopter.position.x >= blockTmp4.position.x + blockTmp4.size.width)
    {
        [self compareCP:blockTmp3 :flyCopter];
        [self compareCP:blockTmp4 :flyCopter];
    }

    [self compareCP:blockTmp5 :flyCopter];
    [self compareCP:blockTmp6 :flyCopter];
    if(flyCopter.position.y <= blockTmp5.position.y - 0 + blockTmp5.size.height + 0)
    if(flyCopter.position.x <= blockTmp5.position.x +20 + blockTmp5.size.width + 0)

    {
        [self compareCP:blockTmp7 :flyCopter];
        [self compareCP:blockTmp8 :flyCopter];
    }

    [self compareCP:blockTmp9 :flyCopter];
    [self compareCP:blockTmp10 :flyCopter];
    if(flyCopter.position.y <= blockTmp9.position.y - 0 + blockTmp9.size.height + 0)
      if(flyCopter.position.x <= blockTmp9.position.x +20 + blockTmp9.size.width + 0)

    {
        [self compareCP:blockTmp11 :flyCopter];
        [self compareCP:blockTmp12 :flyCopter];
    }
  }
}


-(void)compareCP:(SKSpriteNode*)flyCopters : (SKSpriteNode*)blocks{
if(flyCopters){
        if ([blocks intersectsNode:flyCopters]) {
            [self showOver];
    }
  }
}

//字符冲突
-（无效）检查游戏结束{
如果（游戏开始）{
if（flyCopter.position.x>=CGRectGetMaxX（self.frame）-flyCopter.copterWidth/2-6）{
[自我炫耀]；
}
如果（flyCopter.position.x如果您使用Sprite套件，请利用SKPhysicsBody和SKPhysicsWorld

首先，请阅读苹果的：

还可以查看本教程了解碰撞：
您可以查看box2d。它是非常常见的物理库