MooMoo.io Show FPS

Display FPS
目前为 2023-09-16 提交的版本。查看最新版本。
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// ==UserScript==
// @name         MooMoo.io Show FPS
// @description  Display FPS
// @author       KOOKY WARRIOR
// @match        *://*.moomoo.io/*
// @icon         https://moomoo.io/img/favicon.png?v=1
// @require      https://cdnjs.cloudflare.com/ajax/libs/msgpack-lite/0.1.26/msgpack.min.js
// @run-at       document-start
// @grant        unsafeWindow
// @license      MIT
// @version      0.2.2
// @namespace    https://gf.qytechs.cn/users/999838
// ==/UserScript==

;(() => {
	unsafeWindow.showFPS = true

	const element = document.createElement("div")
	element.id = "fps"
	element.style = `
        position: absolute;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        color: white;
    `

	let inGame = false

	new Promise(async (resolve) => {
		let { send } = WebSocket.prototype

		WebSocket.prototype.send = function (...x) {
			send.apply(this, x)
			this.send = send
			this.addEventListener("message", (e) => {
				if (!e.origin.includes("moomoo.io") && unsafeWindow.privateServer) return
				const [packet, data] = msgpack.decode(new Uint8Array(e.data))
				switch (packet) {
					case "1":
						inGame = true
						break
					case "11":
						inGame = false
						update()
						break
				}
			})
			resolve(this)
		}
	})

	unsafeWindow.addEventListener("DOMContentLoaded", () => {
		document.getElementById("mainMenu").appendChild(element)
	})

	function update() {
		const updateDelay = 500
		let lastFpsUpdate = 0
		let frames = 0
		function updateFPS() {
			let now = Date.now()
			let elapsed = now - lastFpsUpdate
			if (elapsed < updateDelay) {
				++frames
			} else {
				element.innerText = `Fps: ${Math.round(frames / (elapsed / 1000))}`
				frames = 0
				lastFpsUpdate = now
			}
			if (!inGame) {
				unsafeWindow.requestAnimationFrame(updateFPS)
			}
		}
		lastFpsUpdate = Date.now()
		unsafeWindow.requestAnimationFrame(updateFPS)
	}
	update()
})()
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