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Emulatorfehler wird angezeigt

<p>Ich habe versucht, einen GBA-Emulator (https://gba.44670.org/), den ich online gefunden habe, zurückzuentwickeln und einen HTML-Extraktor zu verwenden, um zu versuchen, ihn zu replizieren. Ich wollte, dass es offline funktioniert, also habe ich alle Skripte auf meinen Computer heruntergeladen und dort ausgeführt. Danach wird die Schaltfläche „Datei auswählen“ jedoch nicht mehr angezeigt, sondern durch die Textzeile „Laden, bitte warten…“ ersetzt. Als ich mich eingehender mit dem Code befasste, stellte ich fest, dass er etwas mit WASM zu tun hat. Der Code lautet wie folgt: </p> <pre class="brush:php;toolbar:false;"><div id="wasm-loading"> Laden, bitte warten... </div> <div id="select-rom" versteckt> <input type="file" id="romFile" onchange="onFileSelected()" <button onclick="$id('romFile').click()" id="btn-choose">Datei auswählen...</button> </div></pre> <p>Weitere Verweise auf WASM im Code finden Sie in der .js-Datei app.js: </p> <pre class="brush:php;toolbar:false;">function wasmReady() { romBuffer = Module._emuGetSymbol(1) var ptr = Module._emuGetSymbol(2) wasmSaveBuf = Module.HEAPU8.subarray(ptr, ptr + wasmSaveBufLen) ptr = Module._emuGetSymbol(3) imgFrameBuffer = new Uint8ClampedArray(Module.HEAPU8.buffer).subarray(ptr, ptr + 240 * 160 * 4) idata = new ImageData(imgFrameBuffer, 240, 160) isWasmReady = true document.getElementById('wasm-loading').hidden = true document.getElementById('select-rom').hidden = false }</pre> <p>Ich habe erwartet, dass es nach dem Herunterladen des Skripts wie gewohnt funktionieren würde. Ich meine, es hat immer noch Zugriff auf die Skripte, die es benötigt, oder? Ich habe versucht, den Text zu verbergen, indem ich die Wahr/Falsch-Anweisungen in <code>document.getElementById('select-rom').hidden = false</code> geändert habe, aber nichts scheint zu funktionieren. Irgendwelche Ideen? Dank im Voraus. </p> <p>(Übrigens suche ich nach dem Dateipfad in vscode.dev. Es sieht so aus: <code><script src="/Scripts/44gba.js"></script> < ;script src="/Scripts /app.js"></script> <script src="/Scripts/localforage.js"></script> <script src=/Scripts/pako.min .js></script></code> )</p>
P粉447495069P粉447495069479 Tage vor858

Antworte allen(1)Ich werde antworten

  • P粉550823577

    P粉5508235772023-09-02 11:05:59

    要使用脚本将应用程序保留在本地，请记住两件事：

    1. 脚本已经编写完毕，将在当前App目录结构中查找资源（js、css、图片）
    2. 大多数浏览器中的请求和文件读取都会被 CORS 阻止，除非您停用 CORS 预检检查。

    也就是说，复制您在响应中得到的相同 HTML (https://gba.44670.org/ ），这将保留文件结构。这是我得到的内容（index.html）：

    <html lang="en"><head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height">
    <link rel="apple-touch-icon" href="icon.png">
    <link rel="manifest" href="manifest.json">
    <title>44VBA</title>

</head>

<body>
    <style>
        a,
        a:visited {
            color: white;
        }

        html,
        body {
            position: fixed;
            overflow: hidden;
            -webkit-user-select: none;
            user-select: none;
            -webkit-touch-callout: none;
            touch-action: none;
            cursor: inherit;
        }

        body {

            background-color: #000000;
            color: #FFFFFF;
            padding: 0;
            margin: 0;
            width: 100vw;
            height: 100vh;
            font-family: 'Myriad Set Pro', 'Helvetica Neue', Helvetica, Arial, sans-serif;
        }

        hr {
            color: white;
        }

        button {
            border: 2px solid white;
            background: transparent;
            color: white;
            padding: .5em;
        }

        .vk-round {
            text-align: center;
            vertical-align: middle;
            border-radius: 50%;
            display: inline-block;
        }


        .vk {
            color: rgba(0, 0, 0, 0.2);
            background-color: rgba(255, 255, 255, 0.25);
            position: absolute;
            z-index: 1;
            text-align: center;
            vertical-align: middle;
            display: inline-block;
        }

        .vk-hide {
            background-color: transparent !important
        }

        .vk-touched {
            background-color: rgba(255, 255, 255, 0.75) !important
        }

        .menu {
            background: rgb(32, 43, 56);
            position: absolute;
            left: 0;
            top: 0;
            width: 100vw;
            height: 100vh;
            z-index: 999;
        }

        #gba-canvas {
            position: absolute;
            z-index: -1;
        }

        #vk-layer {
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            z-index: 3;
            touch-action: none;
        }

        #msg-layer {
            position: absolute;
            left: 0;
            width: 100%;
            top: 40vh;
            background: rgba(0, 0, 0, 0.5);
            z-index: 2;
        }

        textarea {
            background: transparent;
            color: #fff;
            border: 2px solid white;

        }

        /* textarea placeholder */
        textarea::placeholder {
            color: #666;
        }
    </style>
    <div id="pause-menu" class="menu" style="background: rgba(32,43,56,0.7);" hidden="">
        <button onclick="setPauseMenu(false)"> ← Back </button>
        <hr>
        Savegame management:<br>
        <button onclick="savBackupBtn()">Backup</button>
        <input type="file" id="sav-file" onchange="savRestoreBtn()" hidden="">
        <button onclick="$id('sav-file').click()">Restore</button>
        <hr>
        <label for="cfg-scale-mode">Screen filter:</label>
        <select id="cfg-scale-mode">
            <option value="0">Pixelated</option>
            <option value="1">Smooth</option>
            <option value="2">XBRZ</option>
        </select><br>
        <input type="checkbox" id="cfg-mute">
        <label for="cfg-mute">Mute Sound</label><br>
        <input type="checkbox" id="cfg-turbo">
        <label for="cfg-turbo">Turbo mode</label><br>
        <div id="div-cht">
            Cheat Codes(backup your savegame before using it):<br>
            <textarea id="txt-code" style="width:100%" rows="10" placeholder="Cheat code:
GamesharkAdv: XXXXXXXX YYYYYYYY
CodeBreaker: XXXXXXXX YYYY"></textarea><br>
            <button onclick="chtSaveBtn()">Save Cheat Codes</button>
        </div>
        <hr>
        Cloud Save:<span id="span-cloud-id"></span><br>
        <button onclick="dpOnConnectButtonClicked()" id="btn-dp-connect">Connect Dropbox</button><br>
        <button onclick="dpManualBtn(true)">↑ Upload</button>|<button onclick="dpManualBtn(false)">↓ Download</button><br>
    </div>
    <div id="welcome" class="menu">
        <h1 id="title">44VBA</h1>
        <hr>
        <div id="wasm-loading" hidden="">
            Loading, please wait...
        </div>
        <div id="select-rom">
            <input type="file" id="romFile" onchange="onFileSelected()" hidden=""><p></p>
            <button onclick="$id('romFile').click()" id="btn-choose">Choose File...</button>
        </div>
        <hr>
        Ver. 20230107 | <a href="https://github.com/44670/44vba">GitHub</a>
        <p>
            Your files are processed locally and won't be uploaded to any server.<br>
            This software should not be used to play games you have not legally obtained.<br>
            "GBA", "Game Boy Advance" are trademarks of Nintendo Co.,Ltd, This site is not associated with Nintendo in
            any way.
        </p>
        <div id="ios-hint" hidden="">
            Due to iOS limitations, please open this site(https://gba.44670.org) in <b>Safari</b>, and add it to your
            <b>Home Screen</b> by <b>Share Menu</b> to continue.
            <p style="text-align: center;">⬇⬇⬇</p>
        </div>
    </div>
    <div id="msg-layer" hidden="">
        <p id="msg-text">Gamepad disconnected.</p>
    </div>
    <div id="vk-layer" hidden="">
        <div class="vk-rect vk" data-k="menu" style="top: 25px; left: 591px; width: 150px; height: 25px; font-size: 35px; line-height: 25px;">Menu</div>
        <div class="vk-rect vk" data-k="turbo" style="top: 25px; left: 0px; width: 150px; height: 25px; font-size: 35px; line-height: 25px;">F.F.</div>
        <div class="vk-rect vk" data-k="l" style="top: 75px; left: 0px; width: 150px; height: 50px; font-size: 35px; line-height: 50px;">L</div>
        <div class="vk-rect vk" data-k="r" style="top: 75px; left: 591px; width: 150px; height: 50px; font-size: 35px; line-height: 50px;">R</div>
        <div class="vk-round vk" data-k="a" style="top: 175px; left: 676px; width: 65px; height: 65px; font-size: 35px; line-height: 65px;">A</div>
        <div class="vk-round vk" data-k="b" style="top: 200px; left: 585px; width: 65px; height: 65px; font-size: 35px; line-height: 65px;">B</div>
        <div class="vk-rect vk" data-k="select" style="top: 605px; left: 205.5px; width: 150px; height: 25px; font-size: 35px; line-height: 25px;">Select</div>
        <div class="vk-rect vk" data-k="start" style="top: 605px; left: 385.5px; width: 150px; height: 25px; font-size: 35px; line-height: 25px;">Start</div>
        <div class=" vk" data-k="left" style="top: 200px; left: 0px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;">←</div>
        <div class=" vk" data-k="right" style="top: 200px; left: 100px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;">→</div>
        <div class=" vk" data-k="up" style="top: 150px; left: 50px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;">↑</div>
        <div class=" vk" data-k="down" style="top: 250px; left: 50px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;">↓</div>
        <div class=" vk vk-hide" style="top: 150px; left: 0px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;" data-k="ul"></div>
        <div class=" vk vk-hide" style="top: 150px; left: 100px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;" data-k="ur"></div>
        <div class=" vk vk-hide" style="top: 250px; left: 0px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;" data-k="dl"></div>
        <div class=" vk vk-hide" style="top: 250px; left: 100px; width: 50px; height: 50px; font-size: 35px; line-height: 50px;" data-k="dr"></div>
    </div>
    <canvas width="240" height="160" id="gba-canvas" style="width: 741px; height: 494px; left: 0px; image-rendering: pixelated;"></canvas>
    <script src="pako.min.js"></script>
    <script src="localforage.js"></script>
    <script src="app.js"></script>
    <script src="build/44gba.js"></script>




</body></html>

    然后您可以看到脚本路径，您将按照该路径创建文件：

    <script src="pako.min.js"></script>
<script src="localforage.js"></script>
<script src="app.js"></script>
<script src="build/44gba.js"></script>

    此外，您还需要下载 WASM 文件（压缩后 651KB，未压缩 7.7MB）。您可以在此处下载压缩包（您可以在开发工具的“网络”选项卡中找到它）：https ://gba.44670.org/build/44gba.wasm

    最后，下载所有必要的文件（如果需要，还可以下载图标和图片，但不是必需的）：

    您将得到如下所示的结构：

    现在，如果您可以从浏览器中停用 CORS，那就太好了。但如果没有，您必须从本地 HTTP 服务器提供服务。一种选择是安装 NPM 包： https://www.npmjs.com/package/http-服务器，运行npm install --global http-server。之后，只需导航到终端中的项目目录并启动服务器：

    npx http-server ./ --port 4000

    您将看到正确的屏幕并加载 ROM，然后就完成了。

    编辑：通过简单的 Hack 解决本地 CORS 问题

    由于我知道您现在使用的是 ChromeOS，并且从技术上讲还不知道如何使用 Node、NPM 和 HTTP-Server 来处理它，因此我为您做了一些修改，并将 WASM 二进制内容直接放入 < code>build/44gba.js，并在函数 readBinary 上返回该二进制内容，以便绕过 CORS 问题。您可以直接启动index.html。以下是新 build/44gba.js 文件的链接，只需将其内容替换为以下文件：https://sendeyo.com/en/b02f94b524，你们都很好。以下是更改内容：

    const wasmData = `0061 736d 0100 0000 01c9 011e 6001 7f00
6002 7f7f 0060 0000 6001 7f01 7f60 037f
...  ...  ...  ...  ...  ...  ...  ...
0a00 41c0 8106 0b04 7064 6202`;

// other codes ...

readBinary = filename=>{
    var ret = new Uint8Array(wasmData);
    return ret;
    /* var ret = read_(filename, true);
    if (!ret.buffer) {
        ret = new Uint8Array(ret)
    }
    return ret
    */
}

// other codes ...

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