// if the mouse's planar position is not null, sends the point to the movement method of the TumbleBox
void TryMoveCharacter()
{
Vector3 dir;
if (MousePlanePosition(out dir))
{
dir -= character.transform.position;
character.AddTorqueTowards(dir);
}
}
void MoveBox()
{
float direction = -Input.GetAxis("Horizontal");
character.AddTorqueTowards(direction);
}