The Space Invaders Video Game is the final project of The University of British Columbia's How to Code: Simple Data online course offered on edx.org. There are notable additions that distinguish my game from others. I have listed them to benefit others who may utilize my code to expand upon their own:
- space invaders move at different speeds
- space invaders move in different directions
- the conclusion of the game is met with the GAME OVER screen
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Download DrRacket (reminder: adjust specifications of your system) and install on your local machine: Download Racket
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Download the zip file from this repo: Download zip
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Unzip the file. Inside the
space-invadersfolder, double-click on the space-invaders.rkt file. -
Run the program; the button is located in the top right corner:
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After all tests pass, type this in the interactions section to play the game:
(main G0)
If you wish to reduce the rate of space invaders that spawn on screen, go to line 265 and increase the number 3 in:
(< (random INVADE-RATE) 3)
note: anything larger than 7 is insane. Good luck!
If you wish to reduce the speed at which the space invaders travel, go to line 266 and decrease the number 4 in:
(+ (random 4) 1)
note: replacing this entire section with a positive number produces a constant rate in either direction.
