@Override
    public boolean onMouseDown(int mX, int mY, int button) {
        if(super.onMouseDown(mX, mY, button)) {
            return true;
        }
        for(ResearchItemButton rib : itemSlots) {
            if(rib.onMouseDown(mX, mY, button)) {
                researchDone = true;
                return true;
            }
        }
        
        return false;
    }