when you want to adjust your sprite with the Collision Polygon, construct gives it automatically a few points where you can manipulate the line. Is there a way to add more points to this line?
you can either :
-Double click one of the points
-Right click one of the point and add one
I think it adds it clock-wise, but not sure (Also keep in mind that the platform behaviour works best with a rectangle hitbox, so you might want to think about having a separate object having the platform behaviour if needed)