Added get game file based on install location

[pieterbrandsen]

This should work correctly. Tested on:

• Windows
• Awaiting test on linux
• No tester for mac!

[pieterbrandsen]

Linux also tested, works

[tiennou]

macOS (on Apple Silicon) reports:

file:///$PATH/screeps/screeps-steamless-client/node_modules/steam-game-path/lib/esm/index.js:62
        throw new Error("Unsupported operating system");
              ^

Error: Unsupported operating system
    at getSteamPath (file:///$PATH/screeps/screeps-steamless-client/node_modules/steam-game-path/lib/esm/index.js:62:15)
    at getGamePath (file:///$PATH/screeps/screeps-steamless-client/node_modules/steam-game-path/lib/esm/index.js:89:23)
    at file:///$PATH/screeps/screeps-steamless-client/dist/index.js:50:23
    at file:///$PATH/screeps/screeps-steamless-client/dist/index.js:54:6
    at file:///$PATH/screeps/screeps-steamless-client/dist/index.js:60:2
    at ModuleJob.run (node:internal/modules/esm/module_job:218:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:329:24)
    at async loadESM (node:internal/process/esm_loader:28:7)
    at async handleMainPromise (node:internal/modules/run_main:113:12)

[tiennou]

It works with some patching:

// steam-game-path/lib/esm/index.js, getSteamPath
if (process.platform === "darwin") {
    const steamPath = path.join(homedir(), "Library", "Application Support", "Steam")
    if (fs.existsSync(steamPath)) {
        return steamPath;
    }
    return null;
}
if (process.platform !== "win32") {
    throw new Error(`Unsupported operating system: ${process.platform}`);
}

And the Locate and read 'package.nw' step needs to use path.join() instead of smacking a '' win separator in there.

[Jomik]

This looks wrong. Mac (and Linux) uses forward slash. Let's just check process.platform or path.join?