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Ebitengine rendering backend for the pure Go imgui port

This uses a fork of the version by Splizard, which adds some minor changes to it.

Example

Benefits of not using CGo

  • Cross-compilation
  • WebAssembly
  • Pure Go :D

Building the example for WebAssembly

  1. Clone the repository

  2. Navigate into the example directory: cd internal/example (on Linux)

  3. Build the example:

    On Linux:

    env GOOS=js GOARCH=wasm go build -o example.wasm main.go
    

    On Windows Powershell:

    $Env:GOOS = 'js'
    $Env:GOARCH = 'wasm'
    go build -o yourgame.wasm github.com/yourname/yourgame
    Remove-Item Env:GOOS
    Remove-Item Env:GOARCH
    
  4. Copy wasm_exec.js into the current directory:

    On Linux:

    cp $(go env GOROOT)/misc/wasm/wasm_exec.js .
    

    On Windows Powershell:

    $goroot = go env GOROOT
    cp $goroot\misc\wasm\wasm_exec.js .
    
  5. Create this HTML file

    <!DOCTYPE html>
    <script src="wasm_exec.js"></script>
    <script>
        // Polyfill
        if (!WebAssembly.instantiateStreaming) {
            WebAssembly.instantiateStreaming = async (resp, importObject) => {
                const source = await (await resp).arrayBuffer();
                return await WebAssembly.instantiate(source, importObject);
            };
        }
    
        const go = new Go();
        WebAssembly.instantiateStreaming(
            fetch("example.wasm"),
            go.importObject
        ).then((result) => {
            go.run(result.instance);
        });
    </script>
  6. Start a local HTTP server and open the page in your browser

If you want to embed the game into another page, use iframes (assuming that main.html is the name of the above HTML file):

<!DOCTYPE html>
<iframe src="main.html" width="640" height="480" allow="autoplay"></iframe>