/// <summary>
    /// Checks to see if a given key is pressed, and if it is, change to the given state and also increase the steps counter.
    /// </summary>
    /// <param name="key">Key. (KeyCode.whateverkey</param>
    /// <param name="newState">New state. (States.newstate)</param>
    void Consider_state (KeyCode key, States newState)
    {
        if (Input.GetKeyDown (key)) {
            myState = newState;
            steps++;
        }
    }