MSX Game Engine

Nice, looking forward to seeing the progress.

p.s. To get rid of key click, set CLIKSW in system RAM to 0 .

Is that an MSX game engine in clojure?

Oh, I hadn’t noticed samsaga2’s assembly code is witten in Clojure as a DSL… That’s pretty awesome!

I also want to make my Glass assembler a fully functional language, though with a more conventional syntax, but getting a good Java codebase for the syntax tree and particularly lazy evaluation is something I’m still struggling with. I wish I could talk to some of my old professors :). And the thought of just programming in Haskell or Scala has also occurred to me :D.

Yes, it's written on clojure and I've written a whole assembler only for this (i'm a little insane). Why Clojure? Because I can use clojure functions and macros to generate assembler code. I don't need to write an external utility to convert a png to a screen 2 image. I only have to write a clojure function that writes directly assembler code. And also it's fun!

I have the screen (or level) scripts and sprites working. I have collisions and basic movements. The next will be write something to do sprite animations and loading tilemaps (via Tiled Map Editor). And when the sprites part is done I will add one axis scroll, music and sfx.

And the scripts are not interpreted. They are compiled to assembler. They are very simple but because I want the compiler to be small and simple. There is an init function per sprite what is called only once and and update function what is called on every frame. Every sprite has a small number of local variables and all the scripts has access to a fixed range of global variables.

The test example it's very selfexplanatory.

Very cool! Curious about the compression thing you mention using lz77 for compression, how does it compare to pletter or exomizer in terms of compression and speed? I've been juggling between pletter (very fast decompression time) and exomizer (better compression rate) for a while, and wondering about other options.