left player/green player uses 'W' and 'D' to move left and right right player/red player uses 'left arrow key' and 'right arrow key' to move left and right.
i give credit to Austin Porter for telling me how to add the music and also giving me new ideas for the graphics. And Mr.Bolt for showing me how to make the sprites move smoother and at the same time without one or the other stopping.
