zig-raylib-browser-runtime/index.html at main · krist7599555/zig-raylib-browser-runtime · GitHub

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<!doctype html>
<html>
<head>
  <title>WebGL | Zig + Raylib</title>
  <meta charset="utf-8" />
</head>
<body>

<canvas id="canvas" width="800" height="800"></canvas>
<div>
  <button id="btnSetTitle">Set Title:</button>
</div>

<script type="module" async>
  import createGameModule from './zig-out/lib/game.mjs'

  const Mod = await createGameModule({
    print: console.info,
    printErr: console.error,
    canvas: document.getElementById("canvas"),
  });

  const Game = {
    init() {
      Mod._game_init()
    },
    update() {
      Mod._game_update();
    },
    logInfo() {
      Mod._game_log_info()
    },
    setTitle(str) {
      const len = Mod.lengthBytesUTF8(str) + 1;
      const ptr = Mod.stackAlloc(len); // auto free
      Mod.stringToUTF8(str, ptr, len);
      Mod._game_set_title(ptr);
    },
    getTitle(str) {
      const ptr = Mod.stackAlloc(1000); // auto free
      Mod._game_get_title(ptr);
      const out = Mod.UTF8ToString(ptr);
      return out;
    }
  }


  Game.logInfo()

  Game.init()
  function loop() {
    Game.update();
    requestAnimationFrame(loop);
  }
  loop();


  window.Mod = Mod;
  window.Game = Game;


  const btnSetTitle = document.getElementById("btnSetTitle")
  btnSetTitle.innerText = "Set Title: " + Game.getTitle();
  btnSetTitle.addEventListener("click", () => {
    const title = prompt("new title");
    if (title) {
      Game.setTitle(title)
      btnSetTitle.innerText = "Set Title: " + Game.getTitle();
    }
  })
</script>
</body>
</html>