void Start()
    {
        dollRaycast = new _RaycastDoll(transform);

        foreach (_Muscle muscle in muscles)
        {
            musclesByRg.Add(muscle.bone, muscle);
        }

        lower_leg[(int)Direction.right] = musclesByRg[_legbr];
        lower_leg[(int)Direction.left]  = musclesByRg[_legbl];
        upper_leg[(int)Direction.right] = musclesByRg[_legur];
        upper_leg[(int)Direction.left]  = musclesByRg[_legul];
        hip = musclesByRg[_hip];
    }