public void onClickMouse()
    {
        if (Input.GetMouseButton(0) && !isDead)
        {
            fusionManager.SetIsFollow(true);

            if (!(firstPositionSet))
            {
                firstPosition    = currentPosition;
                firstPositionSet = true;
            }

            targetPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            mouseDistance  = Vector2.Distance(currentPosition, targetPosition);

            if (mouseDistance < unitClickableRange)
            {
                mouseCheck = true;
            }
            moveByMouse();
        }
    }