Awesome

GWG + wasm-bindgen example

This experiment shows connecting wasm-bindgen generated code to a good-web-game application.

It uses simple_logger crate to log! in native mode and console_log in WASM mode. Both versions build from the same codebase. You should see gwg main-loop lifecycle methods calls in console.

It requires a modification in the bindgen generated .js file (see sed call below) and a boilerplate plugin for miniquad wasm loader - see index.html.

Building

Native

$ cargo run
    Finished dev [unoptimized + debuginfo] target(s)
     Running `target/debug/gwg_bindgen`

WASM

pre-req

$ rustup target add wasm32-unknown-unknown
info: downloading component 'rust-std' for 'wasm32-unknown-unknown'
info: installing component 'rust-std' for 'wasm32-unknown-unknown'
$ cargo install wasm-bindgen-cli

build & run

$ cargo build --release --target wasm32-unknown-unknown
   Compiling gwg_bindgen v0.1.0 (gwg_bindgen)
    Finished release [optimized] target(s)
$ wasm-bindgen --out-dir target --target web target/wasm32-unknown-unknown/release/gwg_bindgen.wasm
$ sed -i 's/import.*from .env.;/init.set_wasm = w => wasm = w;/;s/imports\[.env.\] =.*/return imports;/' target/gwg_bindgen.js

Then serve project dir to browser. i.e.

$ basic-http-server .
[INFO ] basic-http-server 0.8.1
[INFO ] addr: http://127.0.0.1:4000
[INFO ] root dir: .