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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<style>
body {
background: linear-gradient(
135deg,
white 0%,
white 49%,
black 49%,
black 51%,
white 51%,
white 100%
);
background-repeat: repeat;
background-size: 20px 20px;
margin: 0;
}
canvas {
background-color: white;
}
</style>
<title>Bevy game</title> <!-- ToDo -->
</head>
<body>
<script>
// Insert hack to make sound autoplay on Chrome as soon as the user interacts with the tab:
// https://developers.google.com/web/updates/2018/11/web-audio-autoplay#moving-forward
// the following function keeps track of all AudioContexts and resumes them on the first user
// interaction with the page. If the function is called and all contexts are already running,
// it will remove itself from all event listeners.
(function () {
// An array of all contexts to resume on the page
const audioContextList = [];
// An array of various user interaction events we should listen for
const userInputEventNames = [
"click",
"contextmenu",
"auxclick",
"dblclick",
"mousedown",
"mouseup",
"pointerup",
"touchend",
"keydown",
"keyup",
];
// A proxy object to intercept AudioContexts and
// add them to the array for tracking and resuming later
self.AudioContext = new Proxy(self.AudioContext, {
construct(target, args) {
const result = new target(...args);
audioContextList.push(result);
return result;
},
});
// To resume all AudioContexts being tracked
function resumeAllContexts(_event) {
let count = 0;
audioContextList.forEach((context) => {
if (context.state !== "running") {
context.resume();
} else {
count++;
}
});
// If all the AudioContexts have now resumed then we unbind all
// the event listeners from the page to prevent unnecessary resume attempts
// Checking count > 0 ensures that the user interaction happens AFTER the game started up
if (count > 0 && count === audioContextList.length) {
userInputEventNames.forEach((eventName) => {
document.removeEventListener(eventName, resumeAllContexts);
});
}
}
// We bind the resume function for each user interaction
// event on the page
userInputEventNames.forEach((eventName) => {
document.addEventListener(eventName, resumeAllContexts);
});
})();
</script>
<script type="module">
// load the actual game
import init from './target/wasm.js'
init();
</script>
</body>
</html>