This is a very minimalistic implementation of the video game classic Asteroids – with one notably exception: it is played on the real projective plane ℝP2 instead of the torus (as usual).
It's implemented in Haskell, yet it is supposed to be run in the browser. This is accomplished by the haste compiler which is one of the available Haskell to Javascript compilers (see the HaskellWiki for alternatives). (In particular this code will not work with a vanilla GHC installation!)
You can see it in action (and, of course, play it) here.
- Left/Right arrow keys: rotate ship
- Up arrow key: boost
- Space: shoot
Get hastec and haste-cabal, the haste compiler and patched cabal
for use with haste, respectively. The easiest way to do this, is via
the "ready to use" binary packages.
Then you can just use (haste-)cabal as usual:
git clone "https://github.com/J0J0/rp2-asteroids.git"
cd rp2-asteroids
path/to/haste-cabal update
path/to/haste-cabal build --hastec-options='--opt-all'
This will produce a javascript file rp2-asteroids.js that can be
used by any html file providing a (big enough) canvas element
with id set to game-canvas (and statically assigned width/height
html attributes). See RP2-Asteroids.html for an example.