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Economy of Motion

A wee platformer where you are restricted to under 13 keystrokes. For js13k 2024, theme "TRISKAIDEKAPHOBIA".

I'm using a framework I wrote a few months ago, the original with more documentation is at https://github.com/aksommerville/weebpoc . Everything is copied; no need to clone that repo to build this one.

High Scores

  • 2024-08-19 87,74: 241
  • 2024-08-19 143,178: 40
  • 2024-08-20: 243
  • 2024-08-20: 83,75: 244
  • 2024-10-09: 82,74: 247

Further work: Build natively

It's ok to have a ridiculously fat platform layer, if it means no changes to the core. So I want to build something that can take the existing index.html and work from there.

Audio is going to be the tricky bit. I think the right approach is to strip Audio.js from the output completely, and implement a different synthesizer on the native end. So during conversion of the Javascript, remove Audio.js, then have the native side provide a global class Audio.

  • How to define QuickJS globals? I need 'window' at least.
    • JS_GetGlobalObject(), JS_SetPropertyStr(), nothing to it.

Looking good so far. Got it bundling, executing, and receiving input. We do indeed have a ridiculously fat platform layer: 4.4 MB for the final executable, of which 19 kB is the actual game. :P

  • Video
  • Joystick
  • Audio
    • Different voices for song.
    • Pitch bend for sound effects.
  • GLES2, remove GL1 (update both render and xegl)
  • Is it possible to make a leaner build of QuickJS? ...a little
    • Feature flags in quickjs/Makefile:
    • CONFIG_BIGNUM=y : 8797424 => 7993744 for libquickjs.a ; 4459272 => 4075648 for ecom.