agb/website/src/App.tsx

import React, { useState } from "react";
import { Mgba } from "./mgba";

function App() {
  const [onGame, setOnGame] = useState(false);
  const [volume, setVolume] = useState(1.0);

  return (
    <div>
      {onGame && (
        <>
          <Mgba gameUrl="/game.gba" volume={volume} />
          <input
            type="range"
            value={volume}
            min="0"
            max="1"
            step="0.05"
            onChange={(e) => setVolume(Number(e.target.value))}
          ></input>
        </>
      )}
      <button onClick={() => setOnGame(!onGame)}>
        {onGame ? "End Game" : "Start Game"}
      </button>
    </div>
  );
}

export default App;