gamepad-support.user.js

// ==UserScript==
// @name         STBG Controller Support Script
// @namespace    https://stb-gaming.github.io
// @version      0.2.5
// @description  A script that uses the JS Gamepad API to add controller support to Denki's online Sky Games
// @author       cobaltgit
// @run-at       document-start
// @match        https://denki.co.uk/sky/*
// @match        https://beehive-bedlam.com/*
// @match        https://stb-gaming.github.io/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=denki.co.uk
// @require      https://github.com/STB-Gaming/userscripts/raw/master/sky-remote.user.js
// ==/UserScript==


(function () {
	'use strict';
	const
		uWindow = typeof unsafeWindow != 'undefined' ? unsafeWindow : window,
		buttonMapping = {
			12: "up",
			13: "down",
			14: "left",
			15: "right",
			9: "backup",
			0: "select",
			1: "red",
			2: "blue",
			3: "yellow",
			8: "green",
			11: "help"
		};

	let
		start,
		gamepad,
		lastPressed = []; // track button states

	function mainLoop() { // todo: add analogue stick support (axes should map to arrow buttons)
		let gamepads = navigator.getGamepads();
		if (!gamepads) return;
		gamepad = gamepads[0];

		for (const index of Object.keys(buttonMapping)) {
			if (lastPressed[index] != gamepad.buttons[index].pressed) {
				if (gamepad.buttons[index].pressed) {
					SkyRemote.holdButton(buttonMapping[index]);
				} else {
					SkyRemote.releaseButton(buttonMapping[index]);
				}
				lastPressed[index] = gamepad.buttons[index].pressed;
			}
		}

		start = uWindow.requestAnimationFrame(mainLoop);
	}

	uWindow.addEventListener("gamepadconnected", event => {
		mainLoop();
	});

	uWindow.addEventListener("gamepaddisconnected", event => {
		uWindow.cancelAnimationFrame(start);
	});
})();