class Timeline {
private:
    RectangleShape rect;
    RectangleShape tLine;
    float songBPM;
    int songMS;
    float songOffset;
    int songDuration;
    float songMultiplier;
    int songSnapMultiplier;
    float MSBB;

public:
    Timeline(int positionX, int positionY, Vector2f size) {
        rect.setPosition(positionX,positionY);
        rect.setSize(size);
        tLine.setPosition(0,positionY);
        tLine.setSize(Vector2f(1,size.y));
    }

    void updateTiming(float beatsPerMinute, int currentMS, float offset, int duration, float multiplier, int snapMultiplier) {
        songBPM = beatsPerMinute;
        songMS = currentMS;
        songOffset = offset;
        songDuration = duration;
        songMultiplier = multiplier;
        songSnapMultiplier = snapMultiplier;
    }

    void draw(RenderWindow *renderWindow) {
        renderWindow->draw(rect);

        MSBB = (60/songBPM)*1000;
        songMS-=songOffset;
        float increment = ((MSBB/songMultiplier)/songSnapMultiplier);
        float move = songMS-songMultiplier;

        for(int draw = 0; draw < 1024; draw+=increment) {
            tLine.setPosition(512+(draw-move),tLine.getPosition().y);
            renderWindow->draw(tLine);
        }
    }
};