2018-07-24状态机

class StateIdle : public State

{

public:

    StateIdle(FSM* fsm) : State(fsm) {}

    int test_counter = 0;

    void OnStateEnter() {

        cout << "---- Idle Enter" << endl;

        test_counter = 0;

    }

    void OnStateTick() {

        cout << "Idle Tick" << endl;

        // 模拟一个定时状态转移。在实际工程中是根据需求逻辑写的

        test_counter++;

        if (test_counter == 5)

        {

            fsm->Trans(State_Attack);

        }

    }

    void OnStateExit() { cout << "==== Idle Exit" << endl; }

};

class StateAttack : public State

{

public:

    StateAttack(FSM* fsm) : State(fsm) {}

    void OnStateEnter() { cout << "---- Attack Enter" << endl; }

    void OnStateTick() { cout << "Attack Tick" << endl; }

    void OnStateExit() { cout << "==== Attack Exit" << endl; }

};

class StateGoHome : public State

{

public:

    StateGoHome(FSM* fsm) : State(fsm) {}

    void OnStateEnter() { cout << "---- GoHome Enter" << endl; }

    void OnStateTick() { cout << "GoHome Tick" << endl; }

    void OnStateExit() { cout << "==== GoHome Exit" << endl; }

};

int main()

{

    // 构造状态机

    FSM* fsm = new FSM();

    State* stateIdle = new StateIdle(fsm);

    State* stateAttack = new StateAttack(fsm);

    State* stateGoHome = new StateGoHome(fsm);

    fsm->Register(State_Idle, stateIdle);

    fsm->Register(State_Attack, stateAttack);

    fsm->Register(State_GoHome, stateGoHome);

    fsm->SetInitState(State_Idle);

    // 将状态机Tick放入程序主循环中, 仅示范

    while (true)

    {

        fsm->Tick();

        sleep(1);

    }

    return 0;

}