DodgeBallz
Play the game at: https://daneelsan.github.io/Dodgeballz/
DodgeBalls implemented in zig (compiled to wasm-freestanding).
This mini game shows how Zig, WASM, Javascript and HTML5 canvas can interact.
In particular, there are lots of back and forth between imported and exported wasm functions.
Among those imported functions are functions that draw things on a canvas, e.g. arc
or strokeRect
.
Build
Tested in version:
$ zig version
0.12.0-dev.271+5cc1831ca
To build the wasm module, run:
$ zig build
$ ls zig-out/lib/
DodgeBallz.wasm
Run
Start up the server in this repository's directory:
python3 -m http.server
Go to your favorite browser and type to the URL localhost:8000
. You should see the checkboard changing colors.
TODOs
-
Find a better way to debug from the wasm module. I used a lot of
console.log
to debug, but given that we can only pass a limited set of types between JS and WASM (e.g.i32
orf32
), this was tedious. Perhaps there is a way to write a zigWriter
that writes into the console. -
Of course, there are many improvements to the game. The score could be made to depend on the size of the enemy, the number of enemies could increase depending on the score achieved, etc.