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Flappy

Implementation of some kind of flappy-bird game. Primary point of this is to showcase how to use OCaml and its existing libraries, to write powerful but simple code with an Elm-like structure. See flap.ml for the game-code.

Temporary download link for compiled code

https://mega.nz/#!5hNTWYZS!Y-8iWdkB8bcFnuo4y1GlqIbYxDgzByXKB7EtWAkj_Lk

Updates

  • Made code more typesafe using subtyping with polymorphic variants
  • Other birds can now revive a fallen bird by flying into feathers
  • Begun drawing own assets
  • Added local multiplayer
  • Added smoot multi-directional vector-based movement
  • Added homing dogs
  • ...

Goals

  • Elm-like code using frp (react) + typesafe html (tyxml) + virtual DOM (reactiveData + tyxml_js).
    • Simple
    • Typesafe + functional - at least concerning the body of the application
    • Minimal direct usage of js-bindings.
    • Visualization code separated from game-model update.
  • Avoid frameworks, use libraries only.
  • Coming up with an elegant solution to identity of object-related problems. E.g. homing missiles.
    • Having some way to calculate who the referenced entity is from the data is fine for homing missiles. Depends on what one wants to do.
  • Composability of 'components'
    • Is the Virtual DOM part of the code effectively composeable, when having nested reactive nodes?
      • If not, maybe use Janestreets Incr_dom - not compatible with react?

Non-goals:

  • Effective visualization
  • Interesting gameplay

How to fly

  • git clone the repository.
  • See the needed dependencies in the _tags file - use opam to install them.
  • Run ./compile.sh which generates an webout/index.html and webout/flap.js.
  • Open webout/index.html in your favorite browser
  • Use w/a/s/d + i/j/k/l + arrow-keys to fly (depending on the value of players in flap.ml)