Cuphead WebGL : Charger un jeu Unity à partir de pièces

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Cuphead WebGL : Charger un jeu Unity à partir de pièces

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9 September 2025

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HTML

<!DOCTYPE html>
<html lang="en-us">
  <head>
    <base href="https://cdn.jsdelivr.net/gh/web-ports/cuphead@0a443a6e79ff762010b31d771086d17280f9db42/">
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Unity WebGL Player | Cuphead</title>
    <style>
      html,
      body {
          margin: 0;
          padding: 0;
          height: 100%;
          overflow: hidden;
          background: #231F20;
      }

#unity-canvas {
          position: fixed;
          inset: 0;
          width: 100%;
          height: 100%;
          display: none;
          background: #231F20;
      }
  </style>
  <script src="TemplateData/UnityProgress.js"></script>
    <script src="Build/UnityLoader.js"></script>
  </head>
  <body>
    <div id="loading-text" style="color: white; font-size: 48px; font-family: cursive; text-align: center; margin-top: 20px;"> LOADING... </div>
    <div id="unityContainer"></div>
    <script>
      var loadingText = document.querySelector("#loading-text");
  
      let loadedBytes = 0;
  
      async function fetchWithProgress(url) {
          const response = await fetch(url);
          const reader = response.body.getReader();
          let chunks = [];
          let received = 0;
  
          while (true) {
              const { done, value } = await reader.read();
              if (done) break;
              received += value.length;
              loadedBytes += value.length;
              chunks.push(value);
  
              let mbDone = (loadedBytes / (1024 * 1024)).toFixed(2);
              let mbTotal = '2127.34';
              loadingText.innerHTML = `LOADING... ${mbDone} MB / ${mbTotal} MB<br><span style="color: red;">First time playing always takes forever</span>`;
          }
  
          let fullBuffer = new Uint8Array(received);
          let offset = 0;
          for (let chunk of chunks) {
              fullBuffer.set(chunk, offset);
              offset += chunk.length;
          }
          return fullBuffer.buffer;
      }
  
      async function mergeFiles(fileParts) {
          const buffers = await Promise.all(fileParts.map(part => fetchWithProgress(part)));
          const mergedBlob = new Blob(buffers);
          return URL.createObjectURL(mergedBlob);
      }
  
      function getParts(file, start, end) {
          let parts = [];
          for (let i = start; i <= end; i++) {
              parts.push(file + ".part" + i);
          }
          return parts;
      }
  
      function resizeUnityContainer() {
    var container = document.getElementById("unityContainer");
    var canvas = container.querySelector("canvas");

container.style.width = window.innerWidth + "px";
    container.style.height = window.innerHeight + "px";

if (canvas) {
        canvas.style.width = window.innerWidth + "px";
        canvas.style.height = window.innerHeight + "px";
    }
}

(async () => {
          const allParts = [
              ...getParts("Build/Build.asm.code.unityweb", 1, 3),
              ...getParts("Build/Build.data.unityweb", 1, 103),
              ...getParts("Build/Build.wasm.code.unityweb", 1, 2),
          ];
 
  
          const [asmurl, dataUrl, wasmurl] = await Promise.all([
              mergeFiles(getParts("Build/Build.asm.code.unityweb", 1, 3)),
              mergeFiles(getParts("Build/Build.data.unityweb", 1, 103)),
              mergeFiles(getParts("Build/Build.wasm.code.unityweb", 1, 2)),
          ]);
  
          const json ={
"companyName": "SpanishFreddy",
"productName": "Cuphead",
"dataUrl": dataUrl,
"wasmCodeUrl": wasmurl,
"wasmFrameworkUrl": "Build.wasm.framework.unityweb",
"asmCodeUrl": asmurl,
"asmMemoryUrl": "Build.asm.memory.unityweb",
"asmFrameworkUrl": "Build.asm.framework.unityweb",
"TOTAL_MEMORY": 2130706432,
"graphicsAPI": ["WebGL 2.0", "WebGL 1.0"],
"webglContextAttributes": {"preserveDrawingBuffer": false},
"splashScreenStyle": "Dark",
"backgroundColor": "#231F20"
};
  
          let blob = new Blob([JSON.stringify(json)], { type: "application/json" });
          let blobUrl = URL.createObjectURL(blob);
          window.addEventListener("resize", resizeUnityContainer);
  
          UnityLoader.instantiate("unityContainer", json, {
              url: blobUrl,
              Module: {
                  onRuntimeInitialized: function () {
                      resizeUnityContainer();
                      document.querySelector("#loading-text").remove();
                  },
              },
          });
      })();
  </script>
  </body>
</html>

CSS