10. Rotation


General Description

This is an enormously frustrating game to be played against the computer. The user must key in a two number vector which will manifest itself as a line on the screen. Each of your moves will be mirrored by the computer. Your objective is to locate the centre and force the computer to meet your own line. The user takes the blue line and any key can be pressed to start the program. To run this program on the Model A, all the REM statements should be removed.

Detailed Description

   Lines 10-90 Credits.
   100-160 Display title.
   170-410 Fancy pattern (can be deleted if not enough memory).
   420-520 Display instructions.
   530 Go to procedure to display grid.
   540 Go to procedure to input move from keyboard.
   550 Go to procedure to move computer.
   560 Go to procedure to check if hit computer.
   570 Go and do it again.
   580-730 Make grid and display starting points.
   740-860 Input vector from player and validate, if OK then move player.
   870-920 Procedure to move computer.
   930-950 Procedure to check if computer is at the same point as you are.
   960-1040 Procedure to show score when finished.
   1050-1140 Finish.

Educational Notes

This is essentially an intelligence test which appears to leave the majority of adults floundering in grave despair. For some reason (!) to most youngsters seem to get the hang of it fairly quickly.