// Use this for initialization
    void Start()
    {
        // Create engine
        engine1 = createEngine(1, 4);
        engine2 = createEngine(2, 4);
        engine3 = createEngine(3, 4);
        engine4 = createEngine(4, 4);

        // Init propellers
        propeller1 = GameObject.Find("PrefabDrone/quadfinal/Cone.002");
        propeller2 = GameObject.Find("PrefabDrone/quadfinal/Cone.009");
        propeller3 = GameObject.Find("PrefabDrone/quadfinal/Cone.005");
        propeller4 = GameObject.Find("PrefabDrone/quadfinal/Cone.013");

        lrEngine1 = propeller1.GetComponent <LineRenderer>();
        lrEngine2 = propeller2.GetComponent <LineRenderer>();
        lrEngine3 = propeller3.GetComponent <LineRenderer>();
        lrEngine4 = propeller4.GetComponent <LineRenderer>();

        reset();
    }
    // Use this for initialization
    void Start()
    {
        // Create engine
        engine1 = createEngine(1,4);
        engine2 = createEngine(2,4);
        engine3 = createEngine(3,4);
        engine4 = createEngine(4,4);

        // Init propellers
        propeller1 = GameObject.Find("PrefabDrone/quadfinal/Cone.002");
        propeller2 = GameObject.Find("PrefabDrone/quadfinal/Cone.009");
        propeller3 = GameObject.Find("PrefabDrone/quadfinal/Cone.005");
        propeller4 = GameObject.Find("PrefabDrone/quadfinal/Cone.013");

        lrEngine1 = propeller1.GetComponent<LineRenderer>();
        lrEngine2 = propeller2.GetComponent<LineRenderer>();
        lrEngine3 = propeller3.GetComponent<LineRenderer>();
        lrEngine4 = propeller4.GetComponent<LineRenderer>();

        reset();
    }