Question

在Unity3d中，我可以使用hit.normal来获得碰撞器碰撞的表面的法线，但是有没有办法找到哪一侧被击中了Unity3d提供的？

一种解决方案是查看法线的方向，并且应该适用于静态对象但是方向发生变化的动态和移动对象呢？

Answer 1

function OnCollisionEnter(collision : Collision)
{
    var relativePosition = transform.InverseTransformPoint(collision.contacts);

    if(relativePosition.x > 0) 
    {
        print(“The object is to the right”);
    } 
    else 
    {
        print(“The object is to the left”);
    }

    if(relativePosition.y > 0) 
    {
        print(“The object is above.”);
    } 
    else 
    {
        print(“The object is below.”);
    }

    if(relativePosition.z > 0) 
    {
        print(“The object is in front.”);
    } 
    else 
    {
        print(“The object is behind.”);
    }
}

Answer 2

void OnCollisionEnter(Collision collision)
{            
    Vector3 dir = (collision.gameObject.transform.position - gameObject.transform.position).normalized;

    if(Mathf.Abs(dir.z) < 0.05f)
    {
        if (dir.x > 0)
        {
            print ("RIGHT");    
        }
        else if (dir.x < 0)
        {
            print ("LEFT");             
        }
    }
    else
    {
        if(dir.z > 0)
        {
            print ("FRONT");
        }
        else if(dir.z < 0)
        {
            print ("BACK");
        }
    }
}

Answer 3

这有效：

map()

如何找到撞击器的哪一侧被击中hit.normal？

3 个答案: