// Debug
void OnGUI()
{
// 显示速度
GUI.Label(new Rect(10, 10, 200, 20), _rigidbody.velocity.ToString());
// 显示速率
GUI.Label(new Rect(10, 30, 200, 20), _rigidbody.velocity.magnitude.ToString());
// 显示状态
GUI.Label(new Rect(10, 50, 200, 20), State.GetType().ToString());
}
// 下一个State的初始化会在当前状态的Exit前进行，需要修改
public void SwitchTo(State targetState)
{
Exit();
UnityEngine.Debug.Log("switch to " + targetState.GetType());
player.State = targetState;
}