StateMachine1c2

int currentState = 0;  // 0:Angry   1:Smile

void Update () {
    
    // state : Angry
    if (currentState == 0) {
        Debug.Log ("Angry!");

        //Smileになる条件
        if (Input.GetKeyDown (KeyCode.S)) {
            currentState = 1;
        }
    }


    // state : Smile
    if (currentState == 1) {
        Debug.Log ("Smile!");

        //Angryになる条件
        if (Input.GetKeyDown (KeyCode.A)) {
            currentState = 0;
        }
    }
}