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

Related tags

Learning Resources javascript rust webassembly wasm rust-lang ggez wasm-bindgen gwg
Overview

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: .
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Comments
  • Wasm build fails

    Wasm build fails

    The Wasm build steps currently don't produce a working example here.. I think its due to a dependency in web_logger ?

    Uncaught RuntimeError: unreachable
    at std::panicking::rust_panic_with_hook::h894f2bdeea4d0ce8 (wasm-function[248]:237)
    at std::panicking::begin_panic_handler::{{closure}}::he30feeb51ae9f99b (wasm-function[282]:122)
    at std::sys_common::backtrace::__rust_end_short_backtrace::h83a4032c6b997446 (wasm-function[418]:40)
    at rust_begin_unwind (wasm-function[378]:60)
    at core::panicking::panic_fmt::h0dfe153eb0ef456a (wasm-function[420]:48)
    at core::panicking::panic::ha2f229d777a180c9 (wasm-function[365]:67)
    at <stdweb::webcore::serialization::SerializedValue as core::convert::From<stdweb::webcore::serialization::SerializedUntaggedString>>::from::hcfdb9c44d50c7c03 (wasm-function[540]:14)
    at <web_logger::WebLogger as log::Log>::log::h56c1faa1e2233630 (wasm-function[222]:247)
    at log::__private_api_log::h03964bce5c393e83 (wasm-function[255]:201)
    at <gwg_bindgen::MainState as good_web_game::event::EventHandler>::resize_event::hd065a6b06379f15a (wasm-function[216]:207)
    opened by ghost 0
Owner
Tomasz Sterna
dreamin' in code
Tomasz Sterna
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