SUB

By Lee Pappas

You are the commander of a sub patrolling enemy waters. Your mission is to rid this area of deadly mines and make these waters safe for travel. Use joystick #1 to move your sub in the direction you choose. The fire button will launch a torpedo with a limited range. You have no limits on time or number of times you can fire.

The "POKE 20,0" sets the clock in the ATARI to coordinate the movements of the gunboat, torpedo, and depth charge, at certain points the clock is reset "PEEK". The "CT = - checks to see what number the clock is up to in its counting. The movement of the sub is straightforward using standard BASIC commands with the joystick functions.