https://youtube.com/shorts/NYgzV5Bzd5E
从这个链接可以看到，我的角色在斜坡或下坡时会穿过地形。角色有刚体和胶囊碰撞器，地形有地形碰撞器。它通过鼠标或触摸输入移动，而不是键盘输入。不使用NavMeshAgent如何解决这个问题？
这是我的代码，如果你需要其他代码，请回复我。

// State pattern is applied, so this function is excuted instead of Update() when character moves.
    protected override void UpdateMoving()
    {
        // _destPos is the point pressed by the mouse on terrain.
        Vector3 dir = _destPos - transform.position;

        // Idle State
        if (dir.magnitude < 0.1f)
        {
            State = Define.State.Idle;
        }
        // Moving State
        // Moving logic, _stat.moveSpeed is Character's move speed.
        else
        {
            float moveDist = Mathf.Clamp(_stat.moveSpeed * Time.deltaTime, 0, dir.magnitude);
            transform.position += dir.normalized * moveDist;
            transform.rotation = Quaternion.Slerp(transform.rotation,
                Quaternion.LookRotation(dir), 20 * Time.deltaTime);
        }
    }

    // This is mouse event function, not related this question directly.
    private void OnMouseEvent_IdleRun(Define.MouseEvent evt)
    {
        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        bool raycastHit = Physics.Raycast(ray, out hit, 70.0f);
        
        switch (evt)
        {
            case Define.MouseEvent.PointerDown:
                if (raycastHit)
                {
                    int layer = hit.transform.gameObject.layer;

                    if (layer == (int)Define.Layer.Ground)
                    {
                        _destPos = hit.point;
                        State = Define.State.Moving;
                    }
                }
                break;
            
            case Define.MouseEvent.Press:
                if (raycastHit)
                    _destPos = hit.point;
                break;
        }
    }

这是完整的代码。
x一个一个一个一个x一个一个二个x
这是我的问题的解决方案，我修改了PlayerController中的UpdateMoving（）

protected override void UpdateMoving()
    {
        Vector3 dir = _destPos - transform.position;

        if (dir.magnitude < 0.1f)
        {
            State = Define.State.Idle;
        }
        else
        {
            RaycastHit hit;
            float moveDist = Mathf.Clamp(5.0f * Time.deltaTime, 0, dir.magnitude);
            Vector3 rayStart = transform.position + Vector3.up;
            Vector3 rayDir = (transform.position + dir.normalized * moveDist) - rayStart; 
            bool raycastHit = Physics.Raycast(rayStart, rayDir, out hit, 70f, _mask);
            Debug.DrawRay(rayStart, rayDir * 5, Color.blue, 1.0f);

            if (raycastHit)
            {
                transform.position = hit.point;
                transform.rotation = Quaternion.Slerp(transform.rotation,
                    Quaternion.LookRotation(dir), 20 * Time.deltaTime);
            }
        }
    }