Attached Link: http://www.buckrogers.demon.co.uk/software/spatrl.zip

Another graphics program that I wrote is a 2D graphics game game that I wrote, called SPATRL (Sea Patrol 1, at this link, about a Sea Patrol suction-dredger-sub cleaning up an incursion of unauthorized scuba divers). I wrote it in DOS to get the best speed and bypass all the overheads that Windows causes. (OK, I know that it needs a better dialog for the user to set up its running parameters.) In it, I found it quite easy to display an image at an angle to movie speed, a job which the writers of Corel Draw refussed to attempt.