void backForce()
 {
     if (isBack())
     {
         verticalSpeed = 0;
         dodgingState = DodgingState.Stay;
     }
     else
     {
         verticalSpeed += Gravity * Time.deltaTime;
     }
 }
    void dodge()
    {
        float keyDownAxisVertical = Input.GetAxisRaw("Vertical");

        if (Application.isConsolePlatform || Application.isEditor)
            keyDownAxisVertical = Input.GetAxisRaw("Vertical");
        else if (Application.isMobilePlatform)
            keyDownAxisVertical = getMobileVerticalMove();

        if (keyDownAxisVertical < 0 && dodgingState == DodgingState.Stay)
        {
            verticalSpeed = -DodgeSpeed;
            dodgingState = DodgingState.Dodging;
        }
    }