透过鼠标点击来操控人物的移动位置
void OnMouseUp() {
RaycastHit hit;
Ray ray;
ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(ray, out hit))
{
GameObject people = GameObject.FindWithTag("People");
(people.GetComponent("Walk") as Walk).StartMove(hit.point);
}
}