/// <summary>
/// 生成状态机，将所有状态和转换条件添加进去，并设置初始状态
/// </summary>
private void MakeFSM()
{
fsm = new FSMSystem();
MenuState menuState = new MenuState(fsm, this);
menuState.AddTransition(Transition.StartClickButton, StateID.Play);
menuState.AddTransition(Transition.RestartToGame, StateID.Play);
//todo
PlayState playState = new PlayState(fsm, this);
playState.AddTransition(Transition.PauseClickButton, StateID.Menu);
//todo
fsm.AddState(menuState);
fsm.AddState(playState);
fsm.Start(StateID.Menu);
}