Sigmally Fixes V2

Easily 3X your FPS on Sigmally.com + many bug fixes + great for multiboxing + supports SigMod

目前为 2024-04-20 提交的版本。查看 最新版本

// ==UserScript==
// @name         Sigmally Fixes V2
// @version      2.2.2
// @description  Easily 3X your FPS on Sigmally.com + many bug fixes + great for multiboxing + supports SigMod
// @author       8y8x
// @match        https://*.sigmally.com/*
// @icon         https://8y8x.dev/favicon.ico
// @license      MIT
// @grant        none
// @namespace    https://8y8x.dev/sigmally-fixes
// @compatible   chrome Recommended for all users, works perfectly out of the box
// @compatible   edge Multiboxers may want to disable Ctrl+W
// @compatible   firefox Multiboxers may want to disable Ctrl+W
// @compatible   opera Multiboxers may want to disable Ctrl+W and tweak Ctrl+Tab
// ==/UserScript==

// @ts-check
/* eslint
	camelcase: 'error',
	comma-dangle: ['error', 'always-multiline'],
	indent: ['error', 'tab', { SwitchCase: 1 }],
	no-trailing-spaces: 'error',
	quotes: ['error', 'single'],
	semi: 'error',
*/ // a light eslint configuration that doesn't compromise code quality
'use strict';

(async () => {
	////////////////////////////////
	// Define Auxiliary Functions //
	////////////////////////////////
	const aux = (() => {
		const aux = {};

		/**
		 * consistent exponential easing relative to 60fps.
		 * for example, with a factor of 2, o=0, n=1:
		 * - at 60fps, 0.5 is returned.
		 * - at 30fps (after 2 frames), 0.75 is returned.
		 * - at 15fps (after 4 frames), 0.875 is returned.
		 * - at 120fps, 0.292893 is returned. if you called this again with o=0.292893, n=1, you would get 0.5.
		 *
		 * @param {number} o
		 * @param {number} n
		 * @param {number} factor
		 * @param {number} dt in seconds
		 */
		aux.exponentialEase = (o, n, factor, dt) => {
			return o + (n - o) * (1 - (1 - 1 / factor)**(60 * dt));
		};

		/**
		 * @param {string} hex
		 * @returns {[number, number, number]}
		 */
		aux.hex2rgb = hex => {
			if (hex.length === 4) {
				return [
					(parseInt(hex[1], 16) || 0) / 15,
					(parseInt(hex[2], 16) || 0) / 15,
					(parseInt(hex[3], 16) || 0) / 15,
				];
			} else if (hex.length === 7) {
				return [
					(parseInt(hex.slice(1, 3), 16) || 0) / 255,
					(parseInt(hex.slice(3, 5), 16) || 0) / 255,
					(parseInt(hex.slice(5, 7), 16) || 0) / 255,
				];
			} else {
				return [0, 0, 0];
			}
		};

		/** @param {[number, number, number]} rgb */
		aux.rgb2hex = rgb => {
			return [
				'#',
				Math.floor(rgb[0] * 255).toString(16).padStart(2, '0'),
				Math.floor(rgb[1] * 255).toString(16).padStart(2, '0'),
				Math.floor(rgb[2] * 255).toString(16).padStart(2, '0'),
			].join('');
		};

		/** @param {string} name */
		aux.parseName = name => {
			const match = name.match(/^\{.*?\}(.*)$/);
			if (match)
				name = match[1];

			return name || 'An unnamed cell';
		};

		/** @param {string} skin */
		aux.parseSkin = skin => {
			if (!skin) return skin;
			skin = skin.replace('1%', '').replace('2%', '').replace('3%', '');
			return '/static/skins/' + skin + '.png';
		};

		/** @type {object | undefined} */
		aux.sigmod = undefined;
		setInterval(() => {
			// @ts-expect-error
			aux.sigmod = window.sigmod?.settings;
		}, 50);

		/**
		 * Only changes sometimes, like when your skin is updated
		 * @type {object | undefined}
		 */
		aux.settings = undefined;
		setInterval(() => {
			try {
				aux.settings = JSON.parse(localStorage.getItem('settings') ?? '');
			} catch (_) {}
		}, 50);

		/*
			If you have Sigmally open in two tabs and you're playing with an account, one has an outdated token while the other has the latest one.
			This causes problems because the tab with the old token does not work properly during the game (skin, XP)
			To fix this, the latest token is sent to the previously opened tab. This way you can collect XP in both tabs and use your selected skin.
			@czrsd
		*/
		/** @type {{ token: string, updated: number } | undefined} */
		aux.token = undefined;
		const tokenChannel = new BroadcastChannel('sigfix-token');
		tokenChannel.addEventListener('message', msg => {
			/** @type {{ token: string, updated: number }} */
			const token = msg.data;
			if (!aux.token || aux.token.updated < token.updated)
				aux.token = token;
		});

		/** @type {object | undefined} */
		aux.userData = undefined;
		// this is the best method i've found to get the userData object, since game.js uses strict mode
		Object.defineProperty(window, 'fetch', {
			value: new Proxy(fetch, {
				apply: (target, thisArg, args) => {
					let url = args[0];
					const data = args[1];
					if (typeof url === 'string') {
						// game.js doesn't think we're connected to a server, we default to eu0 because that's the default
						// everywhere else
						if (url.includes('/userdata/')) url = url.replace('///', '//eu0.sigmally.com/server/');

						// patch the current token in the url and body of the request
						if (aux.token) {
							// 128 hex characters surrounded by non-hex characters (lookahead and lookbehind)
							const tokenTest = /(?<![0-9a-fA-F])[0-9a-fA-F]{128}(?![0-9a-fA-F])/g;
							url = url.replaceAll(tokenTest, aux.token.token);
							if (typeof data?.body === 'string')
								data.body = data.body.replaceAll(tokenTest, aux.token.token);
						}

						args[0] = url;
						args[1] = data;
					}

					return target.apply(thisArg, args).then(res => new Proxy(res, {
						get: (target, prop, _receiver) => {
							if (prop !== 'json') {
								const val = target[prop];
								if (typeof val === 'function')
									return val.bind(target);
								else
									return val;
							}

							return () => target.json().then(obj => {
								if (obj?.body?.user) {
									aux.userData = obj.body.user;
									let updated = Number(new Date(aux.userData.updateTime)); // NaN if invalid / undefined
									if (Number.isNaN(updated))
										updated = Date.now();

									if (!aux.token || updated >= aux.token.updated) {
										aux.token = { token: aux.userData.token, updated };
										tokenChannel.postMessage(aux.token);
									}
								}

								return obj;
							});
						},
					}));
				},
			}),
		});

		/** @param {number} ms */
		aux.wait = ms => new Promise(resolve => setTimeout(resolve, ms));

		return aux;
	})();



	////////////////////////
	// Destroy Old Client //
	////////////////////////
	const destructor = await (async () => {
		// #1 : kill the rendering process
		const oldRQA = requestAnimationFrame;
		window.requestAnimationFrame = function(fn) {
			try {
				throw new Error();
			} catch (err) {
				// prevent drawing the game, but do NOT prevent saving settings (which is called on RQA)
				if (!err.stack.includes('/game.js') || err.stack.includes('HTMLInputElement'))
					return oldRQA(fn);
			}

			return -1;
		};

		// #2 : kill access to using a WebSocket
		const realWebSocket = WebSocket;
		Object.defineProperty(window, 'WebSocket', new Proxy(WebSocket, {
			construct(_target, argArray, _newTarget) {
				if (argArray[0]?.includes('sigmally.com')) {
					throw new Error('Nope :) - hooked by Sigmally Fixes');
				}

				// @ts-expect-error
				return new oldWS(...argArray);
			},
		}));

		/** @type {WeakSet<WebSocket>} */
		const safeWebSockets = new WeakSet();
		let realWsSend = WebSocket.prototype.send;
		WebSocket.prototype.send = function() {
			if (!safeWebSockets.has(this) && this.url.includes('sigmally.com')) {
				this.onclose = null;
				this.close();
				throw new Error('Nope :) - hooked by Sigmally Fixes');
			}

			return realWsSend.apply(this, arguments);
		};

		// #3 : prevent keys from being registered by the game
		setInterval(() => {
			onkeydown = null;
			onkeyup = null;
		}, 50);

		return { realWebSocket, safeWebSockets };
	})();



	/////////////////////
	// Prepare Game UI //
	/////////////////////
	const ui = (() => {
		const ui = {};

		(() => {
			const title = document.querySelector('#title');
			if (!title) return;

			const watermark = document.createElement('span');
			watermark.innerHTML = '<a href="https://greasyfork.org/en/scripts/483587">Sigmally Fixes</a> by yx';
			title.insertAdjacentElement('afterend', watermark);
		})();

		ui.game = (() => {
			const game = {};
			/** @type {HTMLCanvasElement | null} */
			const oldCanvas = document.querySelector('canvas#canvas');
			if (!oldCanvas)
				throw new Error('Couldn\'t find canvas');

			// leave the old canvas so the old client can actually run
			oldCanvas.style.display = 'none';
			/** @type {HTMLCanvasElement} */
			const newCanvas = /** @type {any} */ (oldCanvas.cloneNode());
			newCanvas.id = '';
			newCanvas.style.cssText = `background: #003; width: 100vw; height: 100vh; position: fixed; top: 0; left: 0;
				z-index: 1;`;
			oldCanvas.insertAdjacentElement('beforebegin', newCanvas);
			game.canvas = newCanvas;

			// forward macro inputs from the canvas to the old one - this is for sigmod mouse button controls
			newCanvas.addEventListener('mousedown', e => oldCanvas.dispatchEvent(new MouseEvent('mousedown', e)));
			newCanvas.addEventListener('mouseup', e => oldCanvas.dispatchEvent(new MouseEvent('mouseup', e)));
			// forward mouse movements from the old canvas to the new one - this is for sigmod mouse keybinds
			oldCanvas.addEventListener('mousemove', e => newCanvas.dispatchEvent(new MouseEvent('mousemove', e)));

			const gl = newCanvas.getContext('webgl2');
			if (!gl) {
				alert('Your browser does not support WebGL2. Please use a different one, or disable Sigmally Fixes.');
				throw new Error('Couldn\'t get WebGL2 context');
			}

			game.gl = gl;

			game.viewportScale = 1;
			function resize() {
				newCanvas.width = Math.floor(innerWidth * devicePixelRatio);
				newCanvas.height = Math.floor(innerHeight * devicePixelRatio);
				game.viewportScale = Math.max(innerWidth / 1920, innerHeight / 1080);
				game.gl.viewport(0, 0, newCanvas.width, newCanvas.height);
			}

			addEventListener('resize', resize);
			resize();

			return game;
		})();

		ui.stats = (() => {
			const container = document.createElement('div');
			container.style.cssText = 'position: fixed; top: 10px; left: 10px; width: 400px; height: fit-content; \
				user-select: none; z-index: 2; transform-origin: top left;';
			document.body.appendChild(container);

			const score = document.createElement('div');
			score.style.cssText = 'font-family: Ubuntu; font-size: 30px; color: #fff; line-height: 1.0;';
			container.appendChild(score);

			const measures = document.createElement('div');
			measures.style.cssText = 'font-family: Ubuntu; font-size: 20px; color: #fff; line-height: 1.1;';
			container.appendChild(measures);

			const misc = document.createElement('div');
			// white-space: pre; allows using \r\n to insert line breaks
			misc.style.cssText = 'font-family: Ubuntu; font-size: 14px; color: #fff; white-space: pre; \
				line-height: 1.1; opacity: 0.5;';
			container.appendChild(misc);

			/** @param {object} statData */
			function update(statData) {
				let uptime;
				if (statData.uptime < 60) {
					uptime = '<1min';
				} else {
					uptime = Math.floor(statData.uptime / 60 % 60) + 'min';
					if (statData.uptime >= 60 * 60)
						uptime = Math.floor(statData.uptime / 60 / 60 % 24) + 'hr ' + uptime;
					if (statData.uptime >= 24 * 60 * 60)
						uptime = Math.floor(statData.uptime / 24 / 60 / 60 % 60) + 'd ' + uptime;
				}

				misc.textContent = [
					`${statData.name} (${statData.mode})`,
					`${statData.playersTotal} / ${statData.playersLimit} players`,
					`${statData.playersAlive} playing`,
					`${statData.playersSpect} spectating`,
					`${(statData.update * 2.5).toFixed(1)}% load @ ${uptime}`,
				].join('\r\n');
			}

			function matchTheme() {
				let color = '#fff';

				/** @type {HTMLInputElement | null} */
				const darkTheme = document.querySelector('input#darkTheme');
				if (darkTheme && !darkTheme.checked)
					color = '#000';

				score.style.color = color;
				measures.style.color = color;
				misc.style.color = color;
			}

			matchTheme();

			return { container, score, measures, misc, update, matchTheme };
		})();

		ui.leaderboard = (() => {
			const container = document.createElement('div');
			container.style.cssText = 'position: fixed; top: 10px; right: 10px; width: 200px; height: fit-content; \
				user-select: none; z-index: 2; background: #0006; padding: 15px 5px; transform-origin: top right; \
				display: none;';
			document.body.appendChild(container);

			const title = document.createElement('div');
			title.style.cssText = 'font-family: Ubuntu; font-size: 30px; color: #fff; text-align: center; width: 100%;';
			title.textContent = 'Leaderboard';
			container.appendChild(title);

			const linesContainer = document.createElement('div');
			linesContainer.style.cssText = 'font-family: Ubuntu; font-size: 20px; line-height: 1.2; width: 100%; \
				height: fit-content; text-align: center; white-space: pre; overflow: hidden;';
			container.appendChild(linesContainer);

			const lines = [];
			for (let i = 0; i < 11; ++i) {
				const line = document.createElement('div');
				line.style.display = 'none';
				linesContainer.appendChild(line);
				lines.push(line);
			}

			function update() {
				world.leaderboard.forEach((entry, i) => {
					const line = lines[i];
					if (!line) return;

					line.style.display = 'block';
					line.textContent = `${entry.place ?? i + 1}. ${entry.name}`;
					if (entry.me)
						line.style.color = '#faa';
					else if (entry.sub)
						line.style.color = '#ffc826';
					else
						line.style.color = '#fff';
				});

				for (let i = world.leaderboard.length; i < lines.length; ++i)
					lines[i].style.display = 'none';
			}

			return { container, title, linesContainer, lines, update };
		})();

		/** @type {HTMLElement | null} */
		const mainMenu = document.querySelector('#__line1')?.parentElement ?? null;
		if (!mainMenu) throw new Error('Can\'t find main menu');
		/** @type {HTMLElement | null} */
		const menuLinks = document.querySelector('#menu-links');
		/** @type {HTMLElement | null} */
		const menuWrapper = document.querySelector('#menu-wrapper');
		/** @type {HTMLElement | null} */
		const overlay = document.querySelector('#overlays');

		let escOverlayVisible = true;
		/**
		 * @param {boolean} [show]
		 */
		ui.toggleEscOverlay = show => {
			escOverlayVisible = show ?? !escOverlayVisible;
			if (escOverlayVisible) {
				mainMenu.style.display = '';
				if (overlay) overlay.style.display = '';
				if (menuLinks) menuLinks.style.display = '';
				if (menuWrapper) menuWrapper.style.display = '';

				ui.deathScreen.hide();
			} else {
				mainMenu.style.display = 'none';
				if (overlay) overlay.style.display = 'none';
				if (menuLinks) menuLinks.style.display = 'none';
				if (menuWrapper) menuWrapper.style.display = 'none';
			}
		};

		ui.escOverlayVisible = () => escOverlayVisible;

		ui.deathScreen = (() => {
			const deathScreen = {};

			const statsContainer = document.querySelector('#__line2');
			const continueButton = /** @type {HTMLElement | null} */ (document.querySelector('#continue_button'));
			if (continueButton) {
				continueButton.addEventListener('click', () => {
					ui.toggleEscOverlay(true);
				});
			}

			// i'm not gonna buy a boost to try and figure out how this thing works
			/** @type {HTMLElement | null} */
			const bonus = document.querySelector('#menu__bonus');
			if (bonus) bonus.style.display = 'none';

			/**
			 * @param {{ foodEaten: number, highestScore: number, highestPosition: number,
			 * spawnedAt: number | undefined }} stats
			 */
			deathScreen.show = stats => {
				const foodEatenElement = document.querySelector('#food_eaten');
				if (foodEatenElement)
					foodEatenElement.textContent = stats.foodEaten.toString();

				const highestMassElement = document.querySelector('#highest_mass');
				if (highestMassElement)
					highestMassElement.textContent = Math.round(stats.highestScore).toString();

				const highestPositionElement = document.querySelector('#top_leaderboard_position');
				if (highestPositionElement)
					highestPositionElement.textContent = stats.highestPosition.toString();

				const timeAliveElement = document.querySelector('#time_alive');
				if (timeAliveElement) {
					let time;
					if (stats.spawnedAt === undefined)
						time = 0;
					else
						time = (performance.now() - stats.spawnedAt) / 1000;
					const hours = Math.floor(time / 60 / 60);
					const mins = Math.floor(time / 60 % 60);
					const seconds = Math.floor(time % 60);

					timeAliveElement.textContent =  `${hours ? hours + ' h' : ''} ${mins ? mins + ' m' : ''} `
						+ `${seconds ? seconds + ' s' : ''}`;
				}

				statsContainer?.classList.remove('line--hidden');
				ui.toggleEscOverlay(false);
				if (overlay) overlay.style.display = '';

				stats.foodEaten = 0;
				stats.highestScore = 0;
				stats.highestPosition = 0;
				stats.spawnedAt = undefined;

				// refresh ads... ...yep
				const { adSlot4, adSlot5, adSlot6, googletag } = /** @type {any} */ (window);
				if (googletag) {
					googletag.cmd.push(() => googletag.display(adSlot4));
					googletag.cmd.push(() => googletag.display(adSlot5));
					googletag.cmd.push(() => googletag.display(adSlot6));
				}
			};

			deathScreen.hide = () => {
				const shown = !statsContainer?.classList.contains('line--hidden');
				statsContainer?.classList.add('line--hidden');
				const { googletag } = /** @type {any} */ (window);
				if (shown && googletag) {
					googletag.cmd.push(() => googletag.pubads().refresh());
				}
			};

			return deathScreen;
		})();

		ui.minimap = (() => {
			const canvas = document.createElement('canvas');
			canvas.style.cssText = 'position: absolute; bottom: 0; right: 0; background: #0006; width: 200px; \
				height: 200px; z-index: 2; user-select: none;';
			canvas.width = canvas.height = 200;
			document.body.appendChild(canvas);

			const ctx = canvas.getContext('2d');
			if (!ctx) throw new Error('Can\'t get 2d context for minimap');

			return { canvas, ctx };
		})();

		ui.chat = (() => {
			const chat = {};

			const block = document.querySelector('#chat_block');
			if (!block) throw new Error('Can\'t find #chat_block');

			/**
			 * @param {ParentNode} root
			 * @param {string} selector
			 */
			function clone(root, selector) {
				const old = root.querySelector(selector);
				if (!old) throw new Error(`Can't find element ${selector}`);

				const el = /** @type {HTMLElement} */ (old.cloneNode(true));
				el.id = '';
				old.replaceWith(el);

				return el;
			}

			// elements grabbed with clone() are only styled by their class, not id
			const toggle = chat.toggle = clone(document, '#chat_vsbltyBtn');
			const input = chat.input = /** @type {HTMLInputElement} */ (document.querySelector('#chat_textbox'));
			const scrollbar = chat.scrollbar = clone(document, '#chat_scrollbar');
			const thumb = chat.thumb = clone(scrollbar, '#chat_thumb');

			if (!input) throw new Error('Can\'t find element #chat_textbox');

			const list = chat.list = document.createElement('div');
			list.style.cssText = 'width: 400px; height: 182px; position: absolute; bottom: 54px; left: 46px; \
				overflow: hidden; user-select: none; z-index: 301;';
			block.appendChild(list);

			let toggled = true;
			toggle.style.borderBottomLeftRadius = '10px'; // a bug fix :p
			toggle.addEventListener('click', () => {
				toggled = !toggled;
				input.style.display = toggled ? '' : 'none';
				scrollbar.style.display = toggled ? 'block' : 'none';
				list.style.display = toggled ? '' : 'none';

				if (toggled) {
					toggle.style.borderTopRightRadius = toggle.style.borderBottomRightRadius = '';
					toggle.style.opacity = '';
				} else {
					toggle.style.borderTopRightRadius = toggle.style.borderBottomRightRadius = '10px';
					toggle.style.opacity = '0.25';
				}
			});

			scrollbar.style.display = 'block';
			let scrollTop = 0; // keep a float here, because list.scrollTop is always casted to an int
			let thumbHeight = 1;
			let lastY;
			thumb.style.height = '182px';

			function updateThumb() {
				thumb.style.bottom = (1 - list.scrollTop / (list.scrollHeight - 182)) * (182 - thumbHeight) + 'px';
			}

			function scroll() {
				if (scrollTop >= list.scrollHeight - 182 - 40) {
					// close to bottom, snap downwards
					list.scrollTop = scrollTop = list.scrollHeight - 182;
				}

				thumbHeight = Math.min(Math.max(182 / list.scrollHeight, 0.1), 1) * 182;
				thumb.style.height = thumbHeight + 'px';
				updateThumb();
			}

			let scrolling = false;
			thumb.addEventListener('mousedown', () => void (scrolling = true));
			addEventListener('mouseup', () => void (scrolling = false));
			addEventListener('mousemove', e => {
				const deltaY = e.clientY - lastY;
				lastY = e.clientY;

				if (!scrolling) return;
				e.preventDefault();

				if (lastY === undefined) {
					lastY = e.clientY;
					return;
				}

				list.scrollTop = scrollTop = Math.min(Math.max(
					scrollTop + deltaY * list.scrollHeight / 182, 0), list.scrollHeight - 182);
				updateThumb();
			});

			let lastWasBarrier = true; // init to true, so we don't print a barrier as the first ever message (ugly)
			/**
			 * @param {string} authorName
			 * @param {[number, number, number]} rgb
			 * @param {string} text
			 */
			chat.add = (authorName, rgb, text) => {
				lastWasBarrier = false;

				const container = document.createElement('div');
				const author = document.createElement('span');
				author.style.cssText = `color: ${aux.rgb2hex(rgb)}; padding-right: 0.75em;`;
				author.textContent = authorName;
				container.appendChild(author);

				const msg = document.createElement('span');
				msg.textContent = text;
				container.appendChild(msg);

				while (list.children.length > 100)
					list.firstChild?.remove();

				list.appendChild(container);

				scroll();
			};

			chat.barrier = () => {
				if (lastWasBarrier) return;
				lastWasBarrier = true;

				const barrier = document.createElement('div');
				barrier.style.cssText = 'width: calc(100% - 20px); height: 1px; background: #8888; margin: 10px;';
				list.appendChild(barrier);

				scroll();
			};

			chat.matchTheme = () => {
				/** @type {HTMLInputElement | null} */
				const darkTheme = document.querySelector('input#darkTheme');
				if (!darkTheme || darkTheme.checked) {
					list.style.color = '#fffc';
				} else {
					list.style.color = '#000c';
				}
			};

			return chat;
		})();

		/** @param {string} msg */
		ui.error = msg => {
			const modal = /** @type {HTMLElement | null} */ (document.querySelector('#errormodal'));
			const desc = document.querySelector('#errormodal p');
			if (desc)
				desc.innerHTML = msg;

			if (modal)
				modal.style.display = 'block';
		};

		// sigmod quick fix
		(() => {
			// the play timer is inserted below the top-left stats, but because we offset them, we need to offset this
			// too
			const style = document.createElement('style');
			style.textContent = '.playTimer { transform: translate(5px, 10px); }';
			document.head.appendChild(style);
		})();

		return ui;
	})();



	/////////////////////////
	// Create Options Menu //
	/////////////////////////
	const settings = (() => {
		let settings = {
			cellOutlines: true,
			drawDelay: 120,
			jellySkinLag: true,
			massBold: false,
			massOpacity: 1,
			massScaleFactor: 1,
			nameBold: false,
			nameScaleFactor: 1,
			outlineUnsplittable: true,
			selfSkin: '',
		};

		try {
			settings = JSON.parse(localStorage.getItem('sigfix') ?? '');
		} catch (_) {}

		/** @type {Set<() => void>} */
		const onSaves = new Set();

		const channel = new BroadcastChannel('sigfix-settings');
		channel.addEventListener('message', msg => {
			Object.assign(settings, msg.data);
			onSaves.forEach(fn => fn());
		});

		// #1 : define helper functions
		/**
		 * @param {string} html
		 * @returns {HTMLElement}
		 */
		function fromHTML(html) {
			const div = document.createElement('div');
			div.innerHTML = html;
			return /** @type {HTMLElement} */ (div.firstElementChild);
		}

		function save() {
			localStorage.setItem('sigfix', JSON.stringify(settings));
			channel.postMessage(settings);
		}

		/**
		 * @param {string} sliderSelector
		 * @param {string} displaySelector
		 * @param {{ [K in keyof typeof settings]: (typeof settings)[K] extends number ? K : never }[keyof typeof settings]} property
		 * @param {number} decimals
		 */
		function registerSlider(sliderSelector, displaySelector, property, decimals) {
			const slider = /** @type {HTMLInputElement} */ (document.querySelector(sliderSelector));
			const display = /** @type {HTMLElement} */ (document.querySelector(displaySelector));
			slider.value = settings[property].toString();
			display.textContent = settings[property].toFixed(decimals);

			slider.addEventListener('input', () => {
				settings[property] = parseFloat(slider.value);
				display.textContent = settings[property].toFixed(decimals);
				save();
			});

			onSaves.add(() => {
				slider.value = settings[property].toString();
				display.textContent = settings[property].toFixed(decimals);
			});
		}

		/**
		 * @param {string} inputSelector
		 * @param {{ [K in keyof typeof settings]: (typeof settings)[K] extends string ? K : never }[keyof typeof settings]} property
		 * @param {boolean} sync
		 */
		function registerInput(inputSelector, property, sync) {
			const input = /** @type {HTMLInputElement} */ (document.querySelector(inputSelector));
			let value = input.value = settings[property];

			input.addEventListener('change', () => {
				value = settings[property] = input.value;
				save();
			});

			onSaves.add(() => {
				if (sync)
					value = input.value = settings[property];
				else
					settings[property] = value;
			});
		}

		/**
		 * @param {string} inputSelector
		 * @param {{ [K in keyof typeof settings]: (typeof settings)[K] extends boolean ? K : never }[keyof typeof settings]} property
		 */
		function registerCheckbox(inputSelector, property) {
			const checkbox = /** @type {HTMLInputElement} */ (document.querySelector(inputSelector));
			checkbox.checked = settings[property];

			checkbox.addEventListener('change', () => {
				settings[property] = checkbox.checked;
				save();
			});

			onSaves.add(() => {
				checkbox.checked = settings[property];
			});
		}

		// #2 : create options for the vanilla game
		(() => {
			const content = /** @type {HTMLElement | null} */ (document.querySelector('#cm_modal__settings .ctrl-modal__content'));
			if (!content) return;

			const style = document.createElement('style');
			style.innerHTML = `
			.sf-setting {
				display: block;
				height: 25px;
				position: relative;
			}

			.sf-setting .sf-title {
				position: absolute;
				left: 0;
			}

			.sf-setting .sf-option {
				position: absolute;
				right: 0;
			}

			.sf-setting span, .sf-setting input {
				display: block;
				float: left;
				height: 25px;
				line-height: 25px;
				margin-left: 5px;
			}

			.sf-separator {
				text-align: center;
				width: 100%;
			}
			`;
			document.head.appendChild(style);

			content.appendChild(fromHTML(`
			<div class="menu__item">
				<div style="width: 100%; height: 1px; background: #bfbfbf;"></div>
			</div>`));
			content.appendChild(fromHTML(`<div class="menu__item">
				<div class="sf-setting">
					<span class="sf-title">Draw Delay</span>
					<div class="sf-option">
						<input id="sf-draw-delay" style="width: 100px;" type="range" min="40" max="300" step="5" value="120" />
						<span id="sf-draw-delay-display" style="width: 40px; text-align: right;">120</span>
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Jelly Physics Skin Clipping</span>
					<div class="sf-option">
						<input id="sf-jelly-skin-lag" type="checkbox" />
					</div>
				</div>

				<div class="sf-separator">•</div>

				<div class="sf-setting">
					<span class="sf-title">Name Scale Factor</span>
					<div class="sf-option">
						<input id="sf-name-scale" style="width: 100px;" type="range" min="0.5" max="2" step="0.05" value="1" />
						<span id="sf-name-scale-display" style="width: 40px; text-align: right;">1.00</span>
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Mass Scale Factor</span>
					<div class="sf-option">
						<input id="sf-mass-scale" style="width: 100px;" type="range" min="0.5" max="4" step="0.05" value="1" />
						<span id="sf-mass-scale-display" style="width: 40px; text-align: right;">1.00</span>
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Mass Opacity</span>
					<div class="sf-option">
						<input id="sf-mass-opacity" style="width: 100px;" type="range" min="0" max="1" step="0.05" value="1" />
						<span id="sf-mass-opacity-display" style="width: 40px; text-align: right;">1.00</span>
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Bold name text / mass text</span>
					<div class="sf-option">
						<input id="sf-name-bold" type="checkbox" />
						<input id="sf-mass-bold" type="checkbox" />
					</div>
				</div>

				<div class="sf-separator">•</div>

				<div class="sf-setting">
					<span class="sf-title">Self skin URL</span>
					<div class="sf-option">
						<input id="sf-self-skin" placeholder="https://i.imgur.com/..." type="text" />
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Outline unsplittable cells</span>
					<div class="sf-option">
						<input id="sf-outline-unsplittable" type="checkbox" />
					</div>
				</div>
				<div class="sf-setting">
					<span class="sf-title">Cell outlines</span>
					<div class="sf-option">
						<input id="sf-cell-outlines" type="checkbox" />
					</div>
				</div>
			</div>`));

			registerSlider('#sf-draw-delay', '#sf-draw-delay-display', 'drawDelay', 0);
			registerCheckbox('#sf-jelly-skin-lag', 'jellySkinLag');
			registerSlider('#sf-name-scale', '#sf-name-scale-display', 'nameScaleFactor', 2);
			registerSlider('#sf-mass-scale', '#sf-mass-scale-display', 'massScaleFactor', 2);
			registerSlider('#sf-mass-opacity', '#sf-mass-opacity-display', 'massOpacity', 2);
			registerCheckbox('#sf-name-bold', 'nameBold');
			registerCheckbox('#sf-mass-bold', 'massBold');
			registerInput('#sf-self-skin', 'selfSkin', false);
			registerCheckbox('#sf-outline-unsplittable', 'outlineUnsplittable');
			registerCheckbox('#sf-cell-outlines', 'cellOutlines');
		})();

		// #3 : create options for sigmod
		let sigmodInjection;
		sigmodInjection = setInterval(() => {
			const nav = document.querySelector('.mod_menu_navbar');
			const content = document.querySelector('.mod_menu_content');
			if (!nav || !content) return;

			clearInterval(sigmodInjection);

			const page = fromHTML(`
			<div class="mod_tab scroll" style="display: none;">
				<div class="modRowItems justify-sb">
					<span>Draw delay</span>
					<span class="justify-sb">
						<input class="modInput" id="sfsm-draw-delay" style="width: 200px;" type="range" min="40" max="300" step="5" value="120" />
						<span id="sfsm-draw-delay-display" class="text-center" style="width: 75px;">120</span>
					</span>
				</div>
				<div class="modRowItems justify-sb">
					<span>Jelly physics skin clipping</span>
					<div style="width: 75px; text-align: center;">
						<div class="modCheckbox" style="display: inline-block;">
							<input id="sfsm-jelly-skin-lag" type="checkbox" />
							<label class="cbx" for="sfsm-jelly-skin-lag"></label>
						</div>
					</div>
				</div>

				<span class="text-center">•</span>

				<div class="modRowItems justify-sb">
					<span>Name scale factor</span>
					<span class="justify-sb">
						<input class="modInput" id="sfsm-name-scale-factor" style="width: 200px;" type="range" min="0.5" max="2" step="0.05" value="1" />
						<span id="sfsm-name-scale-factor-display" class="text-center" style="width: 75px;">1.00</span>
					</span>
				</div>
				<div class="modRowItems justify-sb">
					<span>Mass scale factor</span>
					<span class="justify-sb">
						<input class="modInput" id="sfsm-mass-scale-factor" style="width: 200px;" type="range" min="0.5" max="4" step="0.05" value="1" />
						<span id="sfsm-mass-scale-factor-display" class="text-center" style="width: 75px;">1.00</span>
					</span>
				</div>
				<div class="modRowItems justify-sb">
					<span>Mass opacity</span>
					<span class="justify-sb">
						<input class="modInput" id="sfsm-mass-opacity" style="width: 200px;" type="range" min="0" max="1" step="0.05" value="1" />
						<span id="sfsm-mass-opacity-display" class="text-center" style="width: 75px;">1.00</span>
					</span>
				</div>
				<div class="modRowItems justify-sb">
					<span>Bold name text / mass text</span>
					<div style="width: 75px; text-align: center;">
						<div class="modCheckbox" style="display: inline-block;">
							<input id="sfsm-name-bold" type="checkbox" />
							<label class="cbx" for="sfsm-name-bold"></label>
						</div>
						<div class="modCheckbox" style="display: inline-block;">
							<input id="sfsm-mass-bold" type="checkbox" />
							<label class="cbx" for="sfsm-mass-bold"></label>
						</div>
					</div>
				</div>
				
				<span class="text-center">•</span>

				<div class="modRowItems justify-sb">
					<span>Self skin URL (not synced)</span>
					<input class="modInput" id="sfsm-self-skin" placeholder="https://i.imgur.com/..." type="text" />
				</div>
				<div class="modRowItems justify-sb">
					<span>Outline unsplittable cells</span>
					<div style="width: 75px; text-align: center;">
						<div class="modCheckbox" style="display: inline-block;">
							<input id="sfsm-outline-unsplittable" type="checkbox" />
							<label class="cbx" for="sfsm-outline-unsplittable"></label>
						</div>
					</div>
				</div>
				<div class="modRowItems justify-sb">
					<span>Cell outlines</span>
					<div style="width: 75px; text-align: center;">
						<div class="modCheckbox" style="display: inline-block;">
							<input id="sfsm-cell-outlines" type="checkbox" />
							<label class="cbx" for="sfsm-cell-outlines"></label>
						</div>
					</div>
				</div>
			</div>
			`);
			content.appendChild(page);

			registerSlider('#sfsm-draw-delay', '#sfsm-draw-delay-display', 'drawDelay', 0);
			registerCheckbox('#sfsm-jelly-skin-lag', 'jellySkinLag');
			registerSlider('#sfsm-name-scale-factor', '#sfsm-name-scale-factor-display', 'nameScaleFactor', 2);
			registerSlider('#sfsm-mass-scale-factor', '#sfsm-mass-scale-factor-display', 'massScaleFactor', 2);
			registerSlider('#sfsm-mass-opacity', '#sfsm-mass-opacity-display', 'massOpacity', 2);
			registerCheckbox('#sfsm-name-bold', 'nameBold');
			registerCheckbox('#sfsm-mass-bold', 'massBold');
			registerInput('#sfsm-self-skin', 'selfSkin', false);
			registerCheckbox('#sfsm-outline-unsplittable', 'outlineUnsplittable');
			registerCheckbox('#sfsm-cell-outlines', 'cellOutlines');

			const navButton = fromHTML('<button class="mod_nav_btn">🔥 Sig Fixes</button>');
			nav.appendChild(navButton);
			navButton.addEventListener('click', () => {
				// basically openModTab() from sigmod
				(/** @type {NodeListOf<HTMLElement>} */ (document.querySelectorAll('.mod_tab'))).forEach(tab => {
					tab.style.opacity = '0';
					setTimeout(() => tab.style.display = 'none', 200);
				});

				(/** @type {NodeListOf<HTMLElement>} */ (document.querySelectorAll('.mod_nav_btn'))).forEach(tab => {
					tab.classList.remove('mod_selected');
				});

				navButton.classList.add('mod_selected');
				setTimeout(() => {
					page.style.display = 'flex';
					setTimeout(() => page.style.opacity = '1',10);
				}, 200);
			});
		}, 100);

		return settings;
	})();



	////////////////////////////////
	// Setup Multi-tab World Sync //
	////////////////////////////////
	/** @typedef {{
	 * 	self: string,
	 * 	owned: Set<number>,
	 * 	skin: string,
	 * }} SyncData
	 */
	const sync = (() => {
		const sync = {};
		/** @type {Map<string, SyncData>} */
		sync.others = new Map();

		const channel = new BroadcastChannel('sigfix-worldsync');
		const self = Date.now() + '-' + Math.random();

		sync.broadcast = () => {
			/** @type {Set<number>} */
			const owned = new Set();
			world.mine.forEach(id => owned.add(id));
			world.mineDead.forEach(id => owned.add(id));

			/** @type {SyncData} */
			const syncData = {
				self,
				owned,
				skin: settings.selfSkin,
			};
			channel.postMessage(syncData);
		};

		channel.addEventListener('message', m => {
			/** @type {SyncData} */
			const data = m.data;
			sync.others.set(data.self, data);
		});

		return sync;
	})();



	///////////////////////////
	// Setup World Variables //
	///////////////////////////
	/** @typedef {{
	 * id: number,
	 * x: number, ox: number, nx: number,
	 * y: number, oy: number, ny: number,
	 * r: number, or: number, nr: number,
	 * rgb: [number, number, number],
	 * updated: number, born: number, dead: { to: Cell | undefined, at: number } | undefined,
	 * jagged: boolean,
	 * name: string, skin: string, sub: boolean,
	 * jelly: { x: number, y: number, r: number },
	 * }} Cell */
	const world = (() => {
		const world = {};

		// #1 : define cell variables and functions
		/** @type {Map<number, Cell>} */
		world.cells = new Map();
		/** @type {Set<Cell>} */
		world.clanmates = new Set();
		/** @type {number[]} */
		world.mine = []; // order matters, as the oldest cells split first
		/** @type {Set<number>} */
		world.mineDead = new Set();

		/**
		 * @param {Cell} cell
		 * @param {number} now
		 * @param {number | undefined} dt
		 */
		world.move = function(cell, now, dt) {
			let nx = cell.nx;
			let ny = cell.ny;
			if (cell.dead?.to) {
				nx = cell.dead.to.x;
				ny = cell.dead.to.y;
			} else if (cell.r <= 20) {
				cell.x = nx;
				cell.y = ny;
				return;
			}

			const a = Math.min(Math.max((now - cell.updated) / settings.drawDelay, 0), 1);
			cell.x = cell.ox + (nx - cell.ox) * a;
			cell.y = cell.oy + (ny - cell.oy) * a;
			cell.r = cell.or + (cell.nr - cell.or) * a;

			if (dt !== undefined) {
				cell.jelly.x = aux.exponentialEase(cell.jelly.x, cell.x, 2, dt);
				cell.jelly.y = aux.exponentialEase(cell.jelly.y, cell.y, 2, dt);
				cell.jelly.r = aux.exponentialEase(cell.jelly.r, cell.r, 5, dt);
			}
		};

		// clean up dead cells
		setInterval(() => {
			const now = performance.now();
			world.cells.forEach((cell, id) => {
				if (!cell.dead) return;
				if (now - cell.dead.at >= 120) {
					world.cells.delete(id);
					world.mineDead.delete(id);
				}
			});
		}, 100);



		// #2 : define others, like camera and borders
		world.camera = {
			x: 0, tx: 0,
			y: 0, ty: 0,
			scale: 1, tscale: 1,
		};

		/** @type {{ l: number, r: number, t: number, b: number } | undefined} */
		world.border = undefined;

		/** @type {{ name: string, me: boolean, sub: boolean, place: number | undefined }[]} */
		world.leaderboard = [];



		// #3 : define stats
		world.stats = {
			foodEaten: 0,
			highestPosition: 200,
			highestScore: 0,
			/** @type {number | undefined} */
			spawnedAt: undefined,
		};



		return world;
	})();



	//////////////////////////
	// Setup All Networking //
	//////////////////////////
	const net = (() => {
		const net = {};

		// #1 : define state
		/** @type {{ shuffle: Map<number, number>, unshuffle: Map<number, number> } | undefined} */
		let handshake;
		/** @type {number | undefined} */
		let pendingPingFrom;
		let pingInterval;
		let reconnectAttempts = 0;
		/** @type {WebSocket} */
		let ws;

		/** -1 if ping reply took too long @type {number | undefined} */
		net.latency = undefined;
		net.ready = false;

		// #2 : connecting/reconnecting the websocket
		/** @type {HTMLSelectElement | null} */
		const gamemode = document.querySelector('#gamemode');
		if (!gamemode)
			console.warn('#gamemode element no longer exists, falling back to us-1');

		/** @type {HTMLOptionElement | null} */
		const firstGamemode = document.querySelector('#gamemode option');

		function connect() {
			let server = gamemode?.value ?? firstGamemode?.value ?? 'us0.sigmally.com/ws/';
			if (location.search.startsWith('?ip='))
				server = location.search.slice('?ip='.length); // in csrf we trust

			ws = new destructor.realWebSocket('wss://' + server);
			destructor.safeWebSockets.add(ws);
			ws.binaryType = 'arraybuffer';
			ws.addEventListener('close', wsClose);
			ws.addEventListener('error', wsError);
			ws.addEventListener('message', wsMessage);
			ws.addEventListener('open', wsOpen);
		}

		function wsClose() {
			handshake = undefined;
			pendingPingFrom = undefined;
			if (pingInterval)
				clearInterval(pingInterval);

			net.latency = undefined;
			net.ready = false;

			// hide/clear UI
			ui.stats.misc.textContent = '';
			world.leaderboard = [];
			ui.leaderboard.update();

			// clear world
			world.border = undefined;
			world.cells.clear(); // make sure we won't see overlapping IDs from new cells from the new connection
			world.clanmates.clear();
			while (world.mine.length) world.mine.pop();
			world.mineDead.clear();
			sync.broadcast();

			setTimeout(connect, 500 * Math.min(reconnectAttempts++ + 1, 10));
		}

		/** @param {Event} err */
		function wsError(err) {
			console.warn('WebSocket error:', err);
		}

		function wsOpen() {
			reconnectAttempts = 0;

			ui.chat.barrier();

			// reset camera location to the middle; this is implied but never sent by the server
			world.camera.x = world.camera.tx = 0;
			world.camera.y = world.camera.ty = 0;
			world.camera.scale = world.camera.tscale = 1;

			ws.send(new TextEncoder().encode('SIG 0.0.1\x00'));
		}

		// listen for when the gamemode changes
		gamemode?.addEventListener('change', () => {
			ws.close();
		});



		// #3 : set up auxiliary functions
		/**
		 * @param {DataView} dat
		 * @param {number} off
		 * @returns {[string, number]}
		 */
		function readZTString(dat, off) {
			const startOff = off;
			for (; off < dat.byteLength; ++off) {
				if (dat.getUint8(off) === 0) break;
			}

			return [new TextDecoder('utf-8').decode(dat.buffer.slice(startOff, off)), off + 1];
		}

		/**
		 * @param {number} opcode
		 * @param {object} data
		 */
		function sendJson(opcode, data) {
			if (!handshake) return;
			const dataBuf = new TextEncoder().encode(JSON.stringify(data));
			const buf = new ArrayBuffer(dataBuf.byteLength + 2);
			const dat = new DataView(buf);

			dat.setUint8(0, Number(handshake.shuffle.get(opcode)));
			for (let i = 0; i < dataBuf.byteLength; ++i) {
				dat.setUint8(1 + i, dataBuf[i]);
			}

			ws.send(buf);
		}

		function createPingLoop() {
			function ping() {
				if (!handshake) return; // shouldn't ever happen

				if (pendingPingFrom !== undefined) {
					// ping was not replied to, tell the player the ping text might be wonky for a bit
					net.latency = -1;
				}

				ws.send(new Uint8Array([ Number(handshake.shuffle.get(0xfe)) ]));
				pendingPingFrom = performance.now();
			}

			pingInterval = setInterval(ping, 2_000);
		}



		// #4 : set up message handler
		/** @param {MessageEvent} msg */
		function wsMessage(msg) {
			const dat = new DataView(msg.data);
			if (!handshake) {
				// unlikely to change as we're still on v0.0.1 but i'll check it anyway
				let [version, off] = readZTString(dat, 0);
				if (version !== 'SIG 0.0.1') {
					alert(`got unsupported version "${version}", expected "SIG 0.0.1"`);
					return ws.close();
				}

				handshake = { shuffle: new Map(), unshuffle: new Map() };
				for (let i = 0; i < 256; ++i) {
					const shuffled = dat.getUint8(off + i);
					handshake.shuffle.set(i, shuffled);
					handshake.unshuffle.set(shuffled, i);
				}

				createPingLoop();

				return;
			}

			const now = performance.now();
			let off = 1;
			switch (handshake.unshuffle.get(dat.getUint8(0))) {
				case 0x10: { // world update
					// #a : kills / consumes
					const killCount = dat.getUint16(off, true);
					off += 2;

					for (let i = 0; i < killCount; ++i) {
						const killerId = dat.getUint32(off, true);
						const killedId = dat.getUint32(off + 4, true);
						off += 8;

						const killer = world.cells.get(killerId);
						const killed = world.cells.get(killedId);
						if (killed) {
							killed.dead = { to: killer, at: now };
							killed.updated = now;

							if (killed.r <= 20 && world.mine.includes(killerId))
								++world.stats.foodEaten;

							const myIdx = world.mine.indexOf(killedId);
							if (myIdx !== -1) {
								world.mine.splice(myIdx, 1);
								world.mineDead.add(killedId);
							}

							world.clanmates.delete(killed);
						}
					}

					// #b : updates
					while (true) {
						const id = dat.getUint32(off, true);
						off += 4;
						if (id === 0) break;

						const x = dat.getInt16(off, true);
						const y = dat.getInt16(off + 2, true);
						const r = dat.getInt16(off + 4, true);
						const flags = dat.getUint8(off + 6);
						// (void 1 byte, "isUpdate")
						// (void 1 byte, "isPlayer")
						const sub = !!dat.getUint8(off + 9);
						off += 10;

						let clan; [clan, off] = readZTString(dat, off);

						/** @type {[number, number, number] | undefined} */
						let rgb;
						if (flags & 0x02) {
							// update color
							rgb = [dat.getUint8(off) / 255, dat.getUint8(off + 1) / 255, dat.getUint8(off + 2) / 255];
							off += 3;
						}

						let skin = '';
						if (flags & 0x04) {
							// update skin
							[skin, off] = readZTString(dat, off);
							skin = aux.parseSkin(skin);
						}

						let name = '';
						if (flags & 0x08) {
							// update name
							[name, off] = readZTString(dat, off);
							name = aux.parseName(name);
						}

						const jagged = !!(flags & 0x11);

						const cell = world.cells.get(id);
						if (cell && !cell.dead) {
							// update cell.x and cell.y, to prevent rubber banding effect when tabbing out for a bit
							world.move(cell, now, undefined);

							cell.ox = cell.x; cell.oy = cell.y; cell.or = cell.r;
							cell.nx = x; cell.ny = y; cell.nr = r; cell.sub = sub;
							cell.jagged = jagged;
							cell.updated = now;

							if (rgb) cell.rgb = rgb;
							if (skin) cell.skin = skin;
							if (name) cell.name = name;

							if (clan && clan === aux.userData?.clan)
								world.clanmates.add(cell);
						} else {
							/** @type {Cell} */
							const cell = {
								id,
								x, ox: x, nx: x,
								y, oy: y, ny: y,
								r, or: r, nr: r,
								rgb: rgb ?? [1, 1, 1],
								updated: now, born: now, dead: undefined,
								jagged,
								name, skin, sub,
								jelly: { x, y, r },
							};

							world.cells.set(id, cell);

							if (clan && clan === aux.userData?.clan)
								world.clanmates.add(cell);
						}
					}

					// #c : deletes
					const deleteCount = dat.getUint16(off, true);
					off += 2;

					for (let i = 0; i < deleteCount; ++i) {
						const deletedId = dat.getUint32(off, true);
						off += 4;

						const deleted = world.cells.get(deletedId);
						if (deleted) {
							deleted.dead = { to: undefined, at: now };
							world.clanmates.delete(deleted);
						}
					}

					sync.broadcast();

					break;
				}

				case 0x11: { // update camera pos
					world.camera.tx = dat.getFloat32(off, true);
					world.camera.ty = dat.getFloat32(off + 4, true);
					world.camera.tscale = dat.getFloat32(off + 8, true) * ui.game.viewportScale * input.zoom;
					break;
				}

				case 0x12: // delete all cells
					world.cells.forEach(cell => {
						cell.dead ??= { to: undefined, at: now };
					});
					world.clanmates.clear();
					// passthrough
				case 0x14: // delete my cells
					while (world.mine.length) world.mine.pop();
					break;

				case 0x20: { // new owned cell
					world.mine.push(dat.getUint32(off, true));
					if (world.mine.length === 1)
						world.stats.spawnedAt = now;
					break;
				}

				// case 0x30 is a text list (not a numbered list), leave unsupported
				case 0x31: { // ffa leaderboard list
					const lb = [];
					const count = dat.getUint32(off, true);
					off += 4;

					let myPosition;
					for (let i = 0; i < count; ++i) {
						const me = !!dat.getUint32(off, true);
						off += 4;

						let name;
						[name, off] = readZTString(dat, off);
						name = aux.parseName(name);

						// why this is copied into every leaderboard entry is beyond my understanding
						myPosition = dat.getUint32(off, true);
						const sub = !!dat.getUint32(off + 4, true);
						off += 8;

						lb.push({ name, sub, me, place: undefined });
					}

					if (myPosition) {
						if (myPosition - 1 >= lb.length) {
							/** @type {HTMLInputElement | null} */
							const inputName = document.querySelector('input#nick');
							lb.push({ name: aux.parseName(inputName?.value ?? ''), sub: false, me: true, place: myPosition });
						}

						if (myPosition < world.stats.highestPosition)
							world.stats.highestPosition = myPosition;
					}

					world.leaderboard = lb;
					ui.leaderboard.update();
					break;
				}

				case 0x40: { // border update
					world.border = {
						l: dat.getFloat64(off, true),
						t: dat.getFloat64(off + 8, true),
						r: dat.getFloat64(off + 16, true),
						b: dat.getFloat64(off + 24, true),
					};
					break;
				}

				case 0x63: { // chat message
					const flags = dat.getUint8(off);
					const rgb = /** @type {[number, number, number]} */
						([dat.getUint8(off + 1) / 255, dat.getUint8(off + 2) / 255, dat.getUint8(off + 3) / 255]);
					off += 4;

					let name;
					[name, off] = readZTString(dat, off);
					let msg;
					[msg, off] = readZTString(dat, off);

					ui.chat.add(name, rgb, msg);
					break;
				}

				case 0xb4: { // incorrect password alert
					ui.error('Password is incorrect');
					break;
				}

				case 0xdd: {
					net.howarewelosingmoney();
					net.ready = true;
					break;
				}

				case 0xfe: { // server stats, response to a ping
					let statString;
					[statString, off] = readZTString(dat, off);

					const statData = JSON.parse(statString);
					ui.stats.update(statData);

					if (pendingPingFrom) {
						net.latency = now - pendingPingFrom;
						pendingPingFrom = undefined;
					}
					break;
				}
			}
		}



		// #5 : export input functions
		/**
		 * @param {number} x
		 * @param {number} y
		 */
		net.move = function(x, y) {
			if (!handshake) return;
			const buf = new ArrayBuffer(13);
			const dat = new DataView(buf);

			dat.setUint8(0, Number(handshake.shuffle.get(0x10)));
			dat.setInt32(1, x, true);
			dat.setInt32(5, y, true);

			ws.send(buf);
		};

		net.w = function() {
			if (!handshake) return;
			ws.send(new Uint8Array([ Number(handshake.shuffle.get(21)) ]));
		};

		net.qdown = function() {
			if (!handshake) return;
			ws.send(new Uint8Array([ Number(handshake.shuffle.get(18)) ]));
		};

		net.qup = function() {
			if (!handshake) return;
			ws.send(new Uint8Array([ Number(handshake.shuffle.get(19)) ]));
		};

		net.split = function() {
			if (!handshake) return;
			ws.send(new Uint8Array([ Number(handshake.shuffle.get(17)) ]));
		};

		/**
		 * @param {string} msg
		 */
		net.chat = function(msg) {
			if (!handshake) return;
			const msgBuf = new TextEncoder().encode(msg);

			const buf = new ArrayBuffer(msgBuf.byteLength + 3);
			const dat = new DataView(buf);

			dat.setUint8(0, Number(handshake.shuffle.get(0x63)));
			// skip byte #1, seems to require authentication + not implemented anyway
			for (let i = 0; i < msgBuf.byteLength; ++i)
				dat.setUint8(2 + i, msgBuf[i]);

			ws.send(buf);
		};

		/**
		 * @param {string | undefined} v2
		 * @param {string | undefined} v3
		 */
		net.captcha = function(v2, v3) {
			sendJson(0xdc, { recaptchaV2Token: v2, recaptchaV3Token: v3 });
		};

		/**
		 * @param {{ name: string, skin: string, [x: string]: any }} data
		 */
		net.play = function(data) {
			sendJson(0x00, data);
		};

		net.howarewelosingmoney = function() {
			if (!handshake) return;
			// this is a new thing added with the rest of the recent source code obfuscation (2024/02/18)
			// which collects and links to your sigmally account, seemingly just for light data analysis but probably
			// just for the fun of it:
			// - your IP and country
			// - whether you are under a proxy
			// - whether you are using sigmod (because it also blocks ads)
			// - whether you are using a traditional adblocker
			//
			// so, no thank you
			sendJson(0xd0, { ip: '', country: '', proxy: false, user: null, blocker: 'sigmally fixes @8y8x' });
		};

		net.connection = function() {
			if (!ws) return undefined;
			if (ws.readyState !== WebSocket.OPEN) return undefined;
			if (!handshake) return undefined;
			return ws;
		};



		connect();
		return net;
	})();



	//////////////////////////
	// Setup Input Handlers //
	//////////////////////////
	const input = (() => {
		const input = {};

		// #1 : general inputs
		// sigmod's macro feed runs at a slower interval but presses many times in that interval. allowing queueing 2 w
		// presses makes it faster (it would be better if people disabled that macro, but no one would do that)
		let forceW = 0;
		let mouseX = 960;
		let mouseY = 540;
		let w = false;

		input.zoom = 1;

		function mouse() {
			net.move(
				world.camera.x + (mouseX - innerWidth / 2) / ui.game.viewportScale / world.camera.scale,
				world.camera.y + (mouseY - innerHeight / 2) / ui.game.viewportScale / world.camera.scale,
			);
		}

		function unfocused() {
			return ui.escOverlayVisible() || document.activeElement?.tagName === 'INPUT';
		}

		setInterval(() => {
			if (document.visibilityState === 'hidden') return;
			mouse();
			if (forceW > 0) {
				--forceW;
				net.w();
			} else if (w) net.w();
		}, 40);

		// sigmod freezes the player by overlaying an invisible div, so we just listen for canvas movements instead
		ui.game.canvas.addEventListener('mousemove', e => {
			if (ui.escOverlayVisible()) return;
			mouseX = e.clientX;
			mouseY = e.clientY;
		});

		addEventListener('wheel', e => {
			if (unfocused()) return;
			input.zoom *= 0.8 ** (e.deltaY / 100);
			input.zoom = Math.min(Math.max(input.zoom, 0.8 ** 10), 0.8 ** -11);
		});

		addEventListener('keydown', e => {
			if (!document.hasFocus()) return;

			if (e.code === 'Escape') {
				if (document.activeElement === ui.chat.input)
					ui.chat.input.blur();
				else
					ui.toggleEscOverlay();
				return;
			}

			if (unfocused()) {
				if (e.code === 'Enter' && document.activeElement === ui.chat.input && ui.chat.input.value.length > 0) {
					net.chat(ui.chat.input.value.slice(0, 15));
					ui.chat.input.value = '';
					ui.chat.input.blur();
				}

				return;
			}

			switch (e.code) {
				case 'KeyQ':
					if (!e.repeat)
						net.qdown();
					break;
				case 'KeyW':
					w = true;
					forceW = Math.min(forceW + 1, 2);
					break;
				case 'Space': {
					if (!e.repeat) {
						// send immediately, otherwise tabbing out would slow down setInterval and cause late splits
						mouse();
						net.split();
					}
					break;
				}
				case 'Enter': {
					ui.chat.input.focus();
					break;
				}
			}

			if (e.ctrlKey && e.code === 'KeyW') {
				// prevent ctrl+w (only when in fullscreen!) - helps when multiboxing
				e.preventDefault();
			} else if (e.ctrlKey && e.code === 'Tab') {
				e.returnValue = true; // undo e.preventDefault() by SigMod
				e.stopImmediatePropagation(); // prevent SigMod from calling e.preventDefault() afterwards
			} else if (e.code === 'Tab') {
				// prevent tabbing to a UI element, which then lets you press ctrl+w
				e.preventDefault();
			}
		});

		addEventListener('keyup', e => {
			// do not check if unfocused
			if (e.code === 'KeyQ')
				net.qup();
			else if (e.code === 'KeyW')
				w = false;
		});

		// when switching tabs, make sure W is not being held
		addEventListener('blur', () => {
			// dispatch event to make sure sigmod gets it too
			document.dispatchEvent(new KeyboardEvent('keyup', { code: 'KeyW', key: 'w' }));
			forceW = 0;
		});

		addEventListener('beforeunload', e => {
			e.preventDefault();
		});

		// prevent right clicking on the game
		ui.game.canvas.addEventListener('contextmenu', e => e.preventDefault());

		// prevent dragging when some things are selected - i have a habit of unconsciously clicking all the time,
		// making me regularly drag text, disabling my mouse inputs for a bit
		addEventListener('dragstart', e => e.preventDefault());



		// #2 : play and spectate buttons, and captcha
		/** @param {boolean} spectating */
		function playData(spectating) {
			/** @type {HTMLInputElement | null} */
			const nickElement = document.querySelector('input#nick');
			/** @type {HTMLInputElement | null} */
			const password = document.querySelector('input#password');
			/** @type {HTMLInputElement | null} */
			const showClanmatesElement = document.querySelector('input#showClanmates');

			return {
				state: spectating ? 2 : undefined,
				name: nickElement?.value ?? '',
				skin: aux.settings?.skin,
				token: aux.token?.token,
				sub: (aux.userData?.subscription ?? 0) > Date.now(),
				clan: aux.userData?.clan,
				showClanmates: !showClanmatesElement || showClanmatesElement.checked,
				password: password?.value,
			};
		}

		/** @type {HTMLButtonElement | null} */
		const play = document.querySelector('button#play-btn');
		/** @type {HTMLButtonElement | null} */
		const spectate = document.querySelector('button#spectate-btn');
		if (!play || !spectate) throw new Error('Can\'t find play or spectate button');
		play.disabled = spectate.disabled = true;

		(async () => {
			let grecaptcha, CAPTCHA2, CAPTCHA3;
			do {
				grecaptcha = /** @type {any} */ (window).grecaptcha;
				CAPTCHA2 = /** @type {any} */ (window).CAPTCHA2;
				CAPTCHA3 = /** @type {any} */ (window).CAPTCHA3;

				await aux.wait(50);
			} while (!(CAPTCHA2 && CAPTCHA3 && grecaptcha && grecaptcha.execute && grecaptcha.ready && grecaptcha.render && grecaptcha.reset));

			// prevent game.js from invoking recaptcha, as this can cause a lot of lag whenever sigmod spams the play button
			// (e.g. when using the respawn keybind)
			// @ts-expect-error
			window.grecaptcha = {
				execute: () => new Promise(() => {}),
				ready: () => {},
				render: () => {},
				reset: () => {},
			};

			const container = document.createElement('div');
			container.id = 'g-recaptcha2';
			container.style.display = 'none';
			play.parentNode?.insertBefore(container, play);

			/** @type {WebSocket | undefined} */
			let acceptedConnection = undefined;
			let processing = false;
			let v2Handle;
			/** @type {string | undefined} */
			let v2Token = undefined;
			/** @type {string | undefined} */
			let v3Token = undefined;

			// we need to give recaptcha enough time to analyze us, otherwise v3 will fail
			grecaptcha.ready(() => setInterval(async function captchaFlow() {
				let connection = net.connection();
				if (!connection) {
					play.disabled = spectate.disabled = true;
					return;
				}

				if (v2Token || v3Token) {
					net.captcha(v2Token, v3Token);
					v2Token = v3Token = undefined;
					processing = false;
					acceptedConnection = connection;
					play.disabled = spectate.disabled = false;
					return;
				}

				if (processing || connection === acceptedConnection)
					return;

				// start the process of getting a new captcha token
				acceptedConnection = undefined;
				processing = true;
				play.disabled = spectate.disabled = true;

				// (a) : get a v3 token
				/** @type {string | undefined} */
				const v3 = await grecaptcha.execute(CAPTCHA3);

				// (b) : send the v3 token to sigmally for validation (sometimes sigmally doesn't accept v3 tokens)
				const v3Accepted = await fetch('https://' + new URL(connection.url).hostname + '/server/recaptcha/v3', {
					method: 'POST',
					body: JSON.stringify({ recaptchaV3Token: v3 }),
					headers: { 'Content-Type': 'application/json' },
				})
					.then(res => res.json()).then(res => !!res?.body?.success)
					.catch(err => {
						console.error('Failed to validate v3 token:', err);
						return false;
					});

				// (c) : if accepted by this server, send the v3 token to this game
				if (v3Accepted) {
					container.style.display = 'none';
					connection = net.connection();
					if (connection) {
						net.captcha(undefined, v3);
						processing = false;
						acceptedConnection = connection;
						play.disabled = spectate.disabled = false;
					} else {
						v3Token = v3;
					}

					return;
				}

				// (d) : otherwise, render a v2 captcha
				container.style.display = 'block';
				if (v2Handle !== undefined) {
					grecaptcha.reset(v2Handle);
				} else {
					v2Handle = grecaptcha.render('g-recaptcha2', {
						sitekey: CAPTCHA2,
						callback: v2 => {
							container.style.display = 'none';
							if (acceptedConnection) return;

							connection = net.connection();
							if (connection) {
								net.captcha(v2, undefined);
								processing = false;
								acceptedConnection = connection;
								play.disabled = spectate.disabled = false;
							} else {
								v2Token = v2;
							}
						},
					});
				}
			}, 500));

			/** @param {MouseEvent} e */
			async function clickHandler(e) {
				if (!acceptedConnection) return;
				ui.toggleEscOverlay(false);
				net.play(playData(e.currentTarget === spectate));
			}

			play.addEventListener('click', clickHandler);
			spectate.addEventListener('click', clickHandler);
		})();

		return input;
	})();



	//////////////////////////////
	// Configure WebGL Programs //
	//////////////////////////////
	const { programs, uniforms } = (() => {
		// #1 : init webgl context, define helper functions
		const gl = ui.game.gl;
		gl.enable(gl.BLEND);
		gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);

		/**
		 * @param {string} name
		 * @param {WebGLShader} vShader
		 * @param {WebGLShader} fShader
		 */
		function program(name, vShader, fShader) {
			const p = gl.createProgram();
			if (!p)
				throw new Error('GL program is null'); // highly doubt will ever happen in practice

			gl.attachShader(p, vShader);
			gl.attachShader(p, fShader);
			gl.linkProgram(p);

			// note: linking errors should not happen in production
			if (!gl.getProgramParameter(p, gl.LINK_STATUS))
				throw new Error(`failed to link program ${name}:\n${gl.getProgramInfoLog(p)}`);

			return p;
		}

		/**
		 * @param {string} name
		 * @param {number} type
		 * @param {string} source
		 */
		function shader(name, type, source) {
			const s = gl.createShader(type);
			if (!s)
				throw new Error('GL shader is null'); // highly doubt will ever happen in practice

			gl.shaderSource(s, source);
			gl.compileShader(s);

			// note: compilation errors should not happen in production
			if (!gl.getShaderParameter(s, gl.COMPILE_STATUS))
				throw new Error(`failed to compile shader ${name}:\n${gl.getShaderInfoLog(s)}`);

			return s;
		}

		/**
		 * @template {string} T
		 * @param {string} programName
		 * @param {WebGLProgram} program
		 * @param {T[]} names
		 * @returns {{ [x in T]: WebGLUniformLocation }}
		 */
		function getUniforms(programName, program, names) {
			/** @type {{ [x in T]?: WebGLUniformLocation }} */
			const uniforms = {};
			names.forEach(name => {
				const loc = gl.getUniformLocation(program, name);
				if (!loc)
					throw new Error(`uniform ${name} in ${programName} not found`);

				uniforms[name] = loc;
			});

			return /** @type {any} */ (uniforms);
		}



		// #2 : create programs
		const programs = {};
		const uniforms = {};

		programs.bg = program(
			'bg',
			shader('bg.vShader', gl.VERTEX_SHADER, `#version 300 es
			layout(location = 0) in vec2 a_pos;

			uniform float u_aspect_ratio;
			uniform vec2 u_camera_pos;
			uniform float u_camera_scale;

			out vec2 v_world_pos;

			void main() {
				gl_Position = vec4(a_pos, 0, 1);

				v_world_pos = a_pos * vec2(u_aspect_ratio, 1.0) / u_camera_scale;
				v_world_pos += u_camera_pos * vec2(1.0, -1.0);
			}
			`),
			shader('bg.fShader', gl.FRAGMENT_SHADER, `#version 300 es
			precision highp float;
			in vec2 v_world_pos;

			uniform float u_camera_scale;

			uniform vec4 u_border_color;
			uniform float[4] u_border_lrtb;
			uniform bool u_dark_theme_enabled;
			uniform bool u_grid_enabled;
			uniform sampler2D u_texture;

			out vec4 out_color;

			void main() {
				if (u_grid_enabled) {
					vec2 t_coord = v_world_pos / 50.0;
					out_color = texture(u_texture, t_coord);
					// fade grid pixels so when they become <1px wide, they're invisible
					float alpha = clamp(u_camera_scale * 540.0 * 50.0, 0.0, 1.0) * 0.1;
					if (u_dark_theme_enabled) {
						out_color *= vec4(1, 1, 1, alpha);
					} else {
						out_color *= vec4(0, 0, 0, alpha);
					}
				}

				// force border to always be visible, otherwise it flickers
				float thickness = max(3.0 / (u_camera_scale * 540.0), 25.0);

				// make a larger inner rectangle and a normal inverted outer rectangle
				float inner_alpha = min(
					min((v_world_pos.x + thickness) - u_border_lrtb[0], u_border_lrtb[1] - (v_world_pos.x - thickness)),
					min((v_world_pos.y + thickness) - u_border_lrtb[2], u_border_lrtb[3] - (v_world_pos.y - thickness))
				);
				float outer_alpha = max(
					max(u_border_lrtb[0] - v_world_pos.x, v_world_pos.x - u_border_lrtb[1]),
					max(u_border_lrtb[2] - v_world_pos.y, v_world_pos.y - u_border_lrtb[3])
				);
				float alpha = clamp(min(inner_alpha, outer_alpha), 0.0, 1.0);

				out_color = out_color * (1.0 - alpha) + u_border_color * alpha;
			}
			`),
		);
		uniforms.bg = getUniforms('bg', programs.bg, [
			'u_aspect_ratio', 'u_camera_pos', 'u_camera_scale',
			'u_border_color', 'u_border_lrtb', 'u_dark_theme_enabled', 'u_grid_enabled',
		]);



		programs.cell = program(
			'cell',
			shader('cell.vShader', gl.VERTEX_SHADER, `#version 300 es
			layout(location = 0) in vec2 a_pos;

			uniform float u_aspect_ratio;
			uniform vec2 u_camera_pos;
			uniform float u_camera_scale;

			uniform float u_inner_radius;
			uniform float u_outer_radius;
			uniform vec2 u_pos;

			out vec2 v_pos;
			out vec2 v_t_coord;

			void main() {
				v_pos = a_pos;
				v_t_coord = a_pos / (u_inner_radius / u_outer_radius) * 0.5 + 0.5;

				vec2 clip_pos = -u_camera_pos + u_pos + a_pos * u_outer_radius;
				clip_pos *= u_camera_scale * vec2(1.0 / u_aspect_ratio, -1.0);
				gl_Position = vec4(clip_pos, 0, 1);
			}
			`),
			shader('cell.fShader', gl.FRAGMENT_SHADER, `#version 300 es
			precision highp float;
			in vec2 v_pos;
			in vec2 v_t_coord;

			uniform float u_camera_scale;

			uniform float u_alpha;
			uniform vec4 u_color;
			uniform float u_outer_radius;
			uniform vec4 u_outline_color;
			uniform bool u_outline_thick;
			uniform sampler2D u_texture;
			uniform bool u_texture_enabled;

			out vec4 out_color;

			void main() {
				float blur = 0.5 * u_outer_radius * (540.0 * u_camera_scale);
				float d2 = v_pos.x * v_pos.x + v_pos.y * v_pos.y;
				float a = clamp(-blur * (d2 - 1.0), 0.0, 1.0);

				if (u_texture_enabled) {
					out_color = texture(u_texture, v_t_coord);
				}
				out_color = vec4(out_color.rgb, 1) * out_color.a + u_color * (1.0 - out_color.a);

				// outline
				// d > 0.98   => d2 > 0.9604 (default)
				// d > 0.96   => d2 > 0.9216 (thick)
				float outline_d = u_outline_thick ? 0.9216 : 0.9604;
				float oa = clamp(blur * (d2 - outline_d), 0.0, 1.0) * u_outline_color.a;
				out_color.rgb = out_color.rgb * (1.0 - oa) + u_outline_color.rgb * oa;

				out_color.a *= a * u_alpha;
			}
			`),
		);
		uniforms.cell = getUniforms('cell', programs.cell, [
			'u_aspect_ratio', 'u_camera_pos', 'u_camera_scale',
			'u_alpha', 'u_color', 'u_outline_color', 'u_outline_thick', 'u_inner_radius', 'u_outer_radius', 'u_pos',
			'u_texture_enabled',
		]);



		programs.text = program(
			'text',
			shader('text.vShader', gl.VERTEX_SHADER, `#version 300 es
			layout(location = 0) in vec2 a_pos;

			uniform float u_aspect_ratio;
			uniform vec2 u_camera_pos;
			uniform float u_camera_scale;

			uniform vec2 u_pos;
			uniform float u_radius;
			uniform bool u_subtext_centered;
			uniform bool u_subtext_enabled;
			uniform float u_subtext_offset;
			uniform float u_subtext_scale;
			uniform float u_text_scale;
			uniform float u_text_aspect_ratio;

			out vec2 v_pos;

			void main() {
				v_pos = a_pos;

				vec2 clip_space;
				if (u_subtext_enabled) {
					clip_space = a_pos * 0.5 * u_subtext_scale;
					clip_space.x += u_subtext_offset * u_subtext_scale;
					if (!u_subtext_centered) {
						clip_space.y += 0.5 * u_text_scale;
						clip_space.y += 0.25 * (u_subtext_scale - 1.0);
					}
				} else {
					clip_space = a_pos * u_text_scale;
				}

				clip_space *= u_radius * 0.45 * vec2(u_text_aspect_ratio, 1.0);
				clip_space += -u_camera_pos + u_pos;
				clip_space *= u_camera_scale * vec2(1.0 / u_aspect_ratio, -1.0);
				gl_Position = vec4(clip_space, 0, 1);
			}
			`),
			shader('text.fShader', gl.FRAGMENT_SHADER, `#version 300 es
			precision highp float;
			in vec2 v_pos;

			uniform float u_alpha;
			uniform vec3 u_color1;
			uniform vec3 u_color2;
			uniform bool u_silhouette_enabled;

			uniform sampler2D u_texture;
			uniform sampler2D u_silhouette;

			out vec4 out_color;

			void main() {
				vec2 t_coord = v_pos * 0.5 + 0.5;

				float c2_alpha = (t_coord.x + t_coord.y) / 2.0;
				vec4 color = vec4(u_color1 * (1.0 - c2_alpha) + u_color2 * c2_alpha, 1);
				vec4 normal = texture(u_texture, t_coord);

				if (u_silhouette_enabled) {
					vec4 silhouette = texture(u_silhouette, t_coord);

					// #fff - #000 => color (text)
					// #fff - #fff => #fff (respect emoji)
					// #888 - #888 => #888 (respect emoji)
					// #fff - #888 => #888 + color/2 (blur/antialias)
					out_color = silhouette + (normal - silhouette) * color;
				} else {
					out_color = normal * color;
				}

				out_color.a *= u_alpha;
			}
			`),
		);
		uniforms.text = getUniforms('text', programs.text, [
			'u_aspect_ratio', 'u_camera_pos', 'u_camera_scale',
			'u_alpha', 'u_color1', 'u_color2', 'u_pos', 'u_radius', 'u_silhouette', 'u_silhouette_enabled',
			'u_subtext_centered', 'u_subtext_enabled', 'u_subtext_offset', 'u_subtext_scale', 'u_text_aspect_ratio',
			'u_text_scale', 'u_texture',
		]);



		return { programs, uniforms };
	})();



	///////////////////////////////
	// Define Rendering Routines //
	///////////////////////////////
	const render = (() => {
		const render = {};
		const gl = ui.game.gl;

		// #1 : define small misc objects
		const square = gl.createBuffer();
		gl.bindBuffer(gl.ARRAY_BUFFER, square);
		gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-1,-1, 1,-1, -1,1, 1,1]), gl.STATIC_DRAW);

		const vao = gl.createVertexArray();
		gl.bindVertexArray(vao);
		gl.enableVertexAttribArray(0);
		gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);

		const gridSrc = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAAeP4ixAAAAAXNSR0IArs4c6QAAAKVJREFUaEPtkkEKwlAUxBzw/jeWL4J4gECkSrqftC/pzjnn9gfP3ofcf/mWbY8OuVLBilypxutbKlIRyUC/liQWYyuC1UnDikhiMbYiWJ00rIgkFmMrgtVJw4pIYjG2IlidNKyIJBZjK4LVScOKSGIxtiJYnTSsiCQWYyuC1UnDikhiMbYiWJ00rIgkFmMrgtVJw4pIYjG2IlidNPwU2TbpHV/DPgFxJfgvliP9RQAAAABJRU5ErkJggg==';



		// #2 : define helper functions
		const textureFromCache = (() => {
			/** @type {Map<string, WebGLTexture | null>} */
			const cache = new Map();
			render.textureCache = cache;

			/**
			 * @param {string} src
			 */
			return src => {
				const cached = cache.get(src);
				if (cached !== undefined)
					return cached ?? undefined;

				cache.set(src, null);

				const image = new Image();
				image.crossOrigin = 'anonymous';
				image.addEventListener('load', () => {
					const texture = gl.createTexture();
					gl.bindTexture(gl.TEXTURE_2D, texture);
					gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
					gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
					gl.generateMipmap(gl.TEXTURE_2D);
					cache.set(src, texture);
				});
				image.src = src;

				return undefined;
			};
		})();

		const { massTextFromCache, textFromCache } = (() => {
			/**
			 * @template {boolean} T
			 * @typedef {{
			 * 	aspectRatio: number,
			 * 	text: WebGLTexture,
			 *	silhouette: T extends true ? WebGLTexture : WebGLTexture | undefined,
			 * 	accessed: number
			 * }} CacheEntry
			 */
			/** @type {Map<string, CacheEntry<boolean>>} */
			const cache = new Map();
			render.textCache = cache;

			setInterval(() => {
				// remove text after not being used for 1 minute
				const now = performance.now();
				cache.forEach((entry, text) => {
					if (now - entry.accessed > 60_000) {
						// immediately delete text instead of waiting for GC
						gl.deleteTexture(entry.text);
						if (entry.silhouette) gl.deleteTexture(entry.silhouette);
						cache.delete(text);
					}
				});
			}, 60_000);

			const canvas = document.createElement('canvas');
			const ctx = canvas.getContext('2d', { willReadFrequently: true });
			if (!ctx) throw new Error('canvas.getContext(\'2d\') yields null, for whatever reason');

			const baseTextSize = 96;

			// declare a little awkwardly, after ctx is definitely not null
			/**
			 * @param {string} text
			 * @param {boolean} silhouette
			 * @param {boolean} subtext
			 */
			const texture = function texture(text, silhouette, subtext) {
				const textSize = baseTextSize * (subtext ? 0.5 * settings.massScaleFactor : settings.nameScaleFactor);
				const lineWidth = Math.ceil(textSize / 10);

				let font = '';
				if (subtext ? settings.massBold : settings.nameBold)
					font = 'bold';
				font += ' ' + textSize + 'px Ubuntu';

				ctx.font = font;
				canvas.width = ctx.measureText(text).width + lineWidth * 2;
				canvas.height = textSize * 3;
				ctx.clearRect(0, 0, canvas.width, canvas.height);

				// setting canvas.width resets the canvas state
				ctx.font = font;
				ctx.lineJoin = 'round';
				ctx.lineWidth = lineWidth;
				ctx.fillStyle = silhouette ? '#000' : '#fff';
				ctx.strokeStyle = '#000';
				ctx.textBaseline = 'middle';

				// add a space, which is to prevent sigmod from detecting the name
				ctx.strokeText(text + ' ', lineWidth, textSize * 1.5);
				ctx.fillText(text + ' ', lineWidth, textSize * 1.5);

				const data = ctx.getImageData(0, 0, canvas.width, canvas.height);

				const texture = gl.createTexture();
				if (!texture) throw new Error('gl.createTexture() yields null');
				gl.bindTexture(gl.TEXTURE_2D, texture);
				gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, data);
				gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);
				gl.generateMipmap(gl.TEXTURE_2D);
				return texture;
			};

			let drawnMassBold = false;
			let drawnMassScaleFactor = -1;
			/** @type {Map<string, { aspectRatio: number, texture: WebGLTexture }>} */
			const massTextCache = new Map();
			function createMassTextCache() {
				massTextCache.clear();
				for (let i = 0; i <= 9; ++i) {
					massTextCache.set(i.toString(), {
						texture: texture(i.toString(), false, true),
						aspectRatio: canvas.width / canvas.height, // mind the execution order
					});
				}
			}

			createMassTextCache();

			/**
			 * @param {string} digit
			 * @returns {{ aspectRatio: number, texture: WebGLTexture }}
			 */
			const massTextFromCache = digit => {
				if (settings.massScaleFactor !== drawnMassScaleFactor || settings.massBold !== drawnMassBold) {
					createMassTextCache();
					drawnMassScaleFactor = settings.massScaleFactor;
					drawnMassBold = settings.massBold;
				}

				return massTextCache.get(digit) ?? /** @type {any} */ (massTextCache.get('0'));
			};

			let drawnNamesScaleFactor = -1;
			let drawnNamesBold = false;
			/**
			 * @template {boolean} T
			 * @param {string} text
			 * @param {T} silhouette
			 * @returns {CacheEntry<T>}
			 */
			const textFromCache = (text, silhouette) => {
				if (drawnNamesScaleFactor !== settings.nameScaleFactor || drawnNamesBold !== settings.nameBold) {
					cache.clear();
					drawnNamesScaleFactor = settings.nameScaleFactor;
					drawnNamesBold = settings.nameBold;
				}

				let entry = cache.get(text);
				if (!entry) {
					entry = {
						text: texture(text, false, false),
						aspectRatio: canvas.width / canvas.height, // mind the execution order
						silhouette: silhouette ? texture(text, true, false) : undefined,
						accessed: performance.now(),
					};
					cache.set(text, entry);
				} else {
					entry.accessed = performance.now();
				}

				if (silhouette && !entry.silhouette)
					entry.silhouette = texture(text, true, false);

				return entry;
			};

			return { massTextFromCache, textFromCache };
		})();



		// #3 : define the render function
		let fps = 0;
		let lastFrame = performance.now();
		function renderGame() {
			const now = performance.now();
			const dt = Math.max(now - lastFrame, 0.1) / 1000; // there's a chance (now - lastFrame) can be 0
			fps += (1 / dt - fps) / 10;
			lastFrame = now;

			// get settings
			const cellColor = aux.sigmod?.cellColor ? aux.hex2rgb(aux.sigmod.cellColor) : undefined;
			const hidePellets = aux.sigmod?.fps?.hideFood;
			const mapColor = aux.sigmod?.mapColor ? aux.hex2rgb(aux.sigmod.mapColor) : undefined;
			const outlineColor = aux.sigmod?.borderColor ? aux.hex2rgb(aux.sigmod.borderColor) : undefined;
			const pelletColor = aux.sigmod?.foodColor ? aux.hex2rgb(aux.sigmod.foodColor) : undefined;
			/** @type {object | undefined} */
			const skinReplacement = aux.sigmod?.skinImage;
			/** @type {string} */
			const virusSrc = aux.sigmod?.virusImage ?? '/assets/images/viruses/2.png';

			/** @type {[number, number, number] | undefined} */
			let nameColor1;
			/** @type {[number, number, number] | undefined} */
			let nameColor2;
			if (aux.sigmod?.nameColor) {
				nameColor1 = nameColor2 = aux.hex2rgb(aux.sigmod.nameColor);
			} else if (aux.sigmod?.gradientName?.enabled) {
				// color1 and color2 are optional to set
				if (aux.sigmod.gradientName.color1)
					nameColor1 = aux.hex2rgb(aux.sigmod.gradientName.color1);

				if (aux.sigmod.gradientName.color2)
					nameColor2 = aux.hex2rgb(aux.sigmod.gradientName.color2);
			}

			/**
			 * @param {string} selector
			 * @param {boolean} value
			 */
			function setting(selector, value) {
				/** @type {HTMLInputElement | null} */
				const el = document.querySelector(selector);
				return el ? el.checked : value;
			}

			const darkTheme = setting('input#darkTheme', true);
			const jellyPhysics = setting('input#jellyPhysics', false);
			const showBorder = setting('input#showBorder', true);
			const showGrid = setting('input#showGrid', true);
			const showMass = setting('input#showMass', false);
			const showMinimap = setting('input#showMinimap', true);
			const showNames = setting('input#showNames', true);
			const showSkins = setting('input#showSkins', true);

			/** @type {HTMLInputElement | null} */
			const nickElement = document.querySelector('input#nick');
			const nick = nickElement?.value ?? '?';

			// note: most routines are named, for benchmarking purposes
			(function setGlobalUniforms() {
				const aspectRatio = ui.game.canvas.width / ui.game.canvas.height;
				const cameraPosX = world.camera.x;
				const cameraPosY = world.camera.y;
				const cameraScale = world.camera.scale / 540; // (height of 1920x1080 / 2 = 540)

				gl.useProgram(programs.bg);
				gl.uniform1f(uniforms.bg.u_aspect_ratio, aspectRatio);
				gl.uniform2f(uniforms.bg.u_camera_pos, cameraPosX, cameraPosY);
				gl.uniform1f(uniforms.bg.u_camera_scale, cameraScale);

				gl.useProgram(programs.cell);
				gl.uniform1f(uniforms.cell.u_aspect_ratio, aspectRatio);
				gl.uniform2f(uniforms.cell.u_camera_pos, cameraPosX, cameraPosY);
				gl.uniform1f(uniforms.cell.u_camera_scale, cameraScale);

				gl.useProgram(programs.text);
				gl.uniform1f(uniforms.text.u_aspect_ratio, aspectRatio);
				gl.uniform2f(uniforms.text.u_camera_pos, cameraPosX, cameraPosY);
				gl.uniform1f(uniforms.text.u_camera_scale, cameraScale);
				gl.uniform1f(uniforms.text.u_subtext_scale, settings.massScaleFactor);
				gl.uniform1f(uniforms.text.u_text_scale, settings.nameScaleFactor);
				gl.uniform1i(uniforms.text.u_texture, 0);
				gl.uniform1i(uniforms.text.u_silhouette, 1);
			})();

			(function background() {
				if (mapColor) {
					gl.clearColor(...mapColor, 1);
				} else if (darkTheme) {
					gl.clearColor(0x11 / 255, 0x11 / 255, 0x11 / 255, 1); // #111
				} else {
					gl.clearColor(0xf2 / 255, 0xfb / 255, 0xff / 255, 1); // #f2fbff
				}
				gl.clear(gl.COLOR_BUFFER_BIT);

				const gridTexture = textureFromCache(gridSrc);
				if (!gridTexture) return;
				gl.bindTexture(gl.TEXTURE_2D, gridTexture);

				gl.useProgram(programs.bg);

				if (showBorder && world.border) {
					gl.uniform4f(uniforms.bg.u_border_color, 0, 0, 1, 1); // #00f
					gl.uniform1fv(uniforms.bg.u_border_lrtb,
						new Float32Array([ world.border.l, world.border.r, world.border.t, world.border.b ]));
				} else {
					gl.uniform4f(uniforms.bg.u_border_color, 0, 0, 0, 0); // transparent
					gl.uniform1fv(uniforms.bg.u_border_lrtb, new Float32Array([ 0, 0, 0, 0 ]));
				}

				gl.uniform1i(uniforms.bg.u_dark_theme_enabled, Number(darkTheme));
				gl.uniform1i(uniforms.bg.u_grid_enabled, Number(showGrid));

				gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
			})();

			(function updateCells() {
				world.cells.forEach(cell => world.move(cell, now, dt));
			})();

			(function moveCamera() {
				let avgX = 0;
				let avgY = 0;
				let totalR = 0;
				let totalCells = 0;

				world.mine.forEach(id => {
					const cell = world.cells.get(id);
					if (!cell || cell.dead) return;

					avgX += cell.x;
					avgY += cell.y;
					totalR += cell.r;
					++totalCells;
				});

				avgX /= totalCells;
				avgY /= totalCells;

				let xyEaseFactor;
				if (totalCells > 0) {
					world.camera.tx = avgX;
					world.camera.ty = avgY;
					world.camera.tscale = Math.min(64 / totalR) ** 0.4 * input.zoom;

					xyEaseFactor = 2;
				} else {
					xyEaseFactor = 20;
				}

				world.camera.x = aux.exponentialEase(world.camera.x, world.camera.tx, xyEaseFactor, dt);
				world.camera.y = aux.exponentialEase(world.camera.y, world.camera.ty, xyEaseFactor, dt);
				world.camera.scale = aux.exponentialEase(world.camera.scale, world.camera.tscale, 9, dt);
			})();

			(function cells() {
				/** @param {Cell} cell */
				function calcAlpha(cell) {
					let alpha = Math.min((now - cell.born) / 100, 1);
					if (cell.dead)
						alpha = Math.min(alpha, Math.max(1 - (now - cell.dead.at) / 100, 0));

					return alpha;
				}

				// for white cell outlines
				let nextCellIdx = world.mine.length;
				const canSplit = world.mine.map(id => {
					const cell = world.cells.get(id);
					if (!cell) {
						--nextCellIdx;
						return false;
					}

					if (cell.nr < 128)
						return false;

					return nextCellIdx++ < 16;
				});

				/**
				 * @param {Cell} cell
				 * @param {number} alpha
				 */
				function drawCell(cell, alpha) {
					gl.useProgram(programs.cell);

					gl.uniform1f(uniforms.cell.u_alpha, alpha);

					if (jellyPhysics && cell.r > 20 && !cell.jagged) {
						gl.uniform2f(uniforms.cell.u_pos, cell.jelly.x, cell.jelly.y);
						gl.uniform1f(uniforms.cell.u_inner_radius, settings.jellySkinLag ? cell.jelly.r : cell.r);
						gl.uniform1f(uniforms.cell.u_outer_radius, cell.jelly.r);
					} else {
						gl.uniform2f(uniforms.cell.u_pos, cell.x, cell.y);
						gl.uniform1f(uniforms.cell.u_inner_radius, cell.r);
						gl.uniform1f(uniforms.cell.u_outer_radius, cell.r);
					}

					if (cell.jagged) {
						const virusTexture = textureFromCache(virusSrc);
						if (!virusTexture)
							return;

						gl.uniform4f(uniforms.cell.u_color, 0, 0, 0, 0);
						gl.uniform4f(uniforms.cell.u_outline_color, 0, 0, 0, 0);
						gl.uniform1i(uniforms.cell.u_outline_thick, 0);
						gl.uniform1i(uniforms.cell.u_texture_enabled, 1);
						gl.bindTexture(gl.TEXTURE_2D, virusTexture);

						gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
						return;
					}

					if (cell.r <= 20) {
						gl.uniform1i(uniforms.cell.u_outline_thick, 0);
						if (pelletColor) {
							gl.uniform4f(uniforms.cell.u_color, ...pelletColor, 1);
						} else {
							gl.uniform4f(uniforms.cell.u_color, ...cell.rgb, 1);
						}
					} else {
						if (cellColor)
							gl.uniform4f(uniforms.cell.u_color, ...cellColor, 1);
						else
							gl.uniform4f(uniforms.cell.u_color, ...cell.rgb, 1);
					}

					if (cell.r <= 20) {
						gl.uniform4f(uniforms.cell.u_outline_color, 0, 0, 0, 0);
					} else {
						const myIndex = world.mine.indexOf(cell.id);
						if (myIndex !== -1 && !canSplit[myIndex] && settings.outlineUnsplittable) {
							gl.uniform1i(uniforms.cell.u_outline_thick, 1);
							if (darkTheme)
								gl.uniform4f(uniforms.cell.u_outline_color, 1, 1, 1, 1);
							else
								gl.uniform4f(uniforms.cell.u_outline_color, 0, 0, 0, 1);
						} else if (settings.cellOutlines) {
							gl.uniform1i(uniforms.cell.u_outline_thick, 0);
							if (outlineColor) {
								gl.uniform4f(uniforms.cell.u_outline_color, ...outlineColor, 1);
							} else {
								gl.uniform4f(uniforms.cell.u_outline_color,
									cell.rgb[0] * 0.9, cell.rgb[1] * 0.9, cell.rgb[2] * 0.9, 1);
							}
						} else {
							gl.uniform4f(uniforms.cell.u_outline_color, 0, 0, 0, 0);
						}

						gl.uniform1i(uniforms.cell.u_texture_enabled, 0);
						let skin = '';
						if (settings.selfSkin && (world.mine.includes(cell.id) || world.mineDead.has(cell.id))) {
							skin = settings.selfSkin;
						} else {
							for (const [_, data] of sync.others) {
								if (data.owned.has(cell.id)) {
									skin = data.skin;
									break;
								}
							}

							if (!skin && showSkins && cell.skin) {
								if (skinReplacement && cell.skin.includes(skinReplacement.original + '.png'))
									skin = skinReplacement.replaceImg;
							}
						}

						if (skin) {
							const texture = textureFromCache(skin);
							if (texture) {
								gl.uniform1i(uniforms.cell.u_texture_enabled, 1);
								gl.bindTexture(gl.TEXTURE_2D, texture);
							}
						}
					}

					gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
				}

				/**
				 * @param {Cell} cell
				 * @param {number} alpha
				 */
				function drawText(cell, alpha) {
					const showThisName = showNames && cell.r > 75 && cell.name;
					const showThisMass = showMass && cell.r > 75;
					if (!showThisName && !showThisMass) return;

					gl.useProgram(programs.text);

					gl.uniform1f(uniforms.text.u_alpha, alpha);
					if (jellyPhysics)
						gl.uniform2f(uniforms.text.u_pos, cell.jelly.x, cell.jelly.y);
					else
						gl.uniform2f(uniforms.text.u_pos, cell.x, cell.y);
					gl.uniform1f(uniforms.text.u_radius, cell.r);

					let useSilhouette = false;
					if (cell.sub) {
						gl.uniform3f(uniforms.text.u_color1, 0xeb / 255, 0x95 / 255, 0x00 / 255); // #eb9500
						gl.uniform3f(uniforms.text.u_color2, 0xe4 / 255, 0xb1 / 255, 0x10 / 255); // #e4b110
						useSilhouette = true;
					} else {
						gl.uniform3f(uniforms.text.u_color1, 1, 1, 1);
						gl.uniform3f(uniforms.text.u_color2, 1, 1, 1);
					}

					if (cell.name === nick) {
						if (nameColor1) {
							gl.uniform3f(uniforms.text.u_color1, ...nameColor1);
							useSilhouette = true;
						}

						if (nameColor2) {
							gl.uniform3f(uniforms.text.u_color2, ...nameColor2);
							useSilhouette = true;
						}
					}

					if (showThisName) {
						const { aspectRatio, text, silhouette } = textFromCache(cell.name, useSilhouette);
						gl.uniform1f(uniforms.text.u_text_aspect_ratio, aspectRatio);
						gl.uniform1i(uniforms.text.u_silhouette_enabled, silhouette ? 1 : 0);
						gl.uniform1i(uniforms.text.u_subtext_enabled, 0);

						gl.bindTexture(gl.TEXTURE_2D, text);
						if (silhouette) {
							gl.activeTexture(gl.TEXTURE1);
							gl.bindTexture(gl.TEXTURE_2D, silhouette);
							gl.activeTexture(gl.TEXTURE0);
						}

						gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
					}

					if (showThisMass) {
						gl.uniform1f(uniforms.text.u_alpha, alpha * settings.massOpacity);
						gl.uniform1i(uniforms.text.u_silhouette_enabled, 0);
						gl.uniform1i(uniforms.text.u_subtext_enabled, 1);

						if (showThisName) {
							gl.uniform1i(uniforms.text.u_subtext_centered, 0);
						} else {
							gl.uniform1i(uniforms.text.u_subtext_centered, 1);
						}

						// draw each digit separately, as Ubuntu makes them all the same width.
						// significantly reduces the size of the text cache
						const mass = Math.floor(cell.nr * cell.nr / 100).toString();
						for (let i = 0; i < mass.length; ++i) {
							const { aspectRatio, texture } = massTextFromCache(mass[i]);
							gl.uniform1f(uniforms.text.u_text_aspect_ratio, aspectRatio);
							gl.uniform1f(uniforms.text.u_subtext_offset, (i - (mass.length - 1) / 2) * 0.75);

							gl.bindTexture(gl.TEXTURE_2D, texture);
							gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
						}
					}
				}

				/** @type {Cell[]} */
				const sorted = [];
				world.cells.forEach(cell => {
					if (cell.r > 75) {
						// not an important cell, will draw sorted later
						sorted.push(cell);
						return;
					}

					if (cell.r <= 20 && hidePellets) return;
					const alpha = calcAlpha(cell);
					drawCell(cell, alpha);
				});

				sorted.sort((a, b) => a.r - b.r);

				sorted.forEach(cell => {
					const alpha = calcAlpha(cell);
					drawCell(cell, alpha);
					if (!cell.jagged)
						drawText(cell, alpha);
				});
			})();

			(function updateStats() {
				ui.stats.matchTheme(); // not sure how to listen to when the checkbox changes when the game loads
				if (showNames && world.leaderboard.length > 0)
					ui.leaderboard.container.style.display = '';
				else
					ui.leaderboard.container.style.display = 'none';

				let score = 0;
				world.mine.forEach(id => {
					const cell = world.cells.get(id);
					if (!cell || cell.dead) return;

					score += cell.nr * cell.nr / 100;
				});

				if (typeof aux.userData?.boost === 'number' && aux.userData.boost > Date.now())
					score *= 2;

				if (score > 0)
					ui.stats.score.textContent = 'Score: ' + Math.floor(score);
				else
					ui.stats.score.textContent = '';

				let measures = `${Math.floor(fps)} FPS`;
				if (net.latency !== undefined) {
					if (net.latency === -1)
						measures += ' ????ms ping';
					else
						measures += ` ${Math.floor(net.latency)}ms ping`;
				}

				ui.stats.measures.textContent = measures;

				if (score > world.stats.highestScore) {
					world.stats.highestScore = score;
				}

				if (world.mine.length === 0 && world.stats.spawnedAt !== undefined) {
					ui.deathScreen.show(world.stats);
				}
			})();

			(function minimap() {
				if (!showMinimap) {
					ui.minimap.canvas.style.display = 'none';
					return;
				} else {
					ui.minimap.canvas.style.display = '';
				}

				const { border } = world;
				if (!border) return;

				// text needs to be small and sharp, i don't trust webgl with that, so we use a 2d context
				const { canvas, ctx } = ui.minimap;
				canvas.width = canvas.height = 200 * devicePixelRatio;

				// sigmod overlay resizes itself differently, so we correct it whenever we need to
				/** @type {HTMLCanvasElement | null} */
				const sigmodMinimap = document.querySelector('canvas.minimap');
				if (sigmodMinimap) {
					// we need to check before updating the canvas, otherwise we will clear it
					if (sigmodMinimap.style.width !== '200px' || sigmodMinimap.style.height !== '200px')
						sigmodMinimap.style.width = sigmodMinimap.style.height = '200px';

					if (sigmodMinimap.width !== 200 * devicePixelRatio || sigmodMinimap.height !== 200 * devicePixelRatio)
						sigmodMinimap.width = sigmodMinimap.height = 200 * devicePixelRatio;
				}

				ctx.clearRect(0, 0, canvas.width, canvas.height);

				const gameWidth = (border.r - border.l);
				const gameHeight = (border.b - border.t);

				// highlight current section
				ctx.fillStyle = '#ff0';
				ctx.globalAlpha = 0.3;

				const sectionX = Math.floor((world.camera.x - border.l) / gameWidth * 5);
				const sectionY = Math.floor((world.camera.y - border.t) / gameHeight * 5);
				const sectorSize = canvas.width / 5;
				ctx.fillRect(sectionX * sectorSize, sectionY * sectorSize, sectorSize, sectorSize);

				// draw section names
				ctx.font = `${Math.floor(sectorSize / 3)}px Ubuntu`;
				ctx.fillStyle = darkTheme ? '#fff' : '#000';
				ctx.globalAlpha = 0.3;
				ctx.textAlign = 'center';
				ctx.textBaseline = 'middle';

				const cols = ['1', '2', '3', '4', '5'];
				const rows = ['A', 'B', 'C', 'D', 'E'];
				cols.forEach((col, y) => {
					rows.forEach((row, x) => {
						ctx.fillText(row + col, (x + 0.5) * sectorSize, (y + 0.5) * sectorSize);
					});
				});

				ctx.globalAlpha = 1;



				// draw cells
				/** @param {Cell} cell */
				const drawCell = function drawCell(cell) {
					const x = (cell.x - border.l) / gameWidth * canvas.width;
					const y = (cell.y - border.t) / gameHeight * canvas.height;
					const r = Math.max(cell.r / gameWidth * canvas.width, 2);

					ctx.fillStyle = aux.rgb2hex(cell.rgb);
					ctx.beginPath();
					ctx.moveTo(x + r, y);
					ctx.arc(x, y, r, 0, 2 * Math.PI);
					ctx.fill();
				};

				/**
				 * @param {number} x
				 * @param {number} y
				 * @param {string} name
				 */
				const drawName = function drawName(x, y, name) {
					x = (x - border.l) / gameWidth * canvas.width;
					y = (y - border.t) / gameHeight * canvas.height;

					ctx.fillStyle = '#fff';
					// add a space to prevent sigmod from detecting names
					ctx.fillText(name + ' ', x, y - 7 * devicePixelRatio - sectorSize / 6);
				};

				// draw clanmates first, below yourself
				// we sort clanmates by color AND name, to ensure clanmates stay separate
				/** @type {Map<string, { name: string, n: number, x: number, y: number }>} */
				const avgPos = new Map();
				world.clanmates.forEach(cell => {
					if (world.mine.includes(cell.id)) return;
					drawCell(cell);

					const id = cell.name + cell.rgb[0] + cell.rgb[1] + cell.rgb[2];
					const entry = avgPos.get(id);
					if (entry) {
						++entry.n;
						entry.x += cell.x;
						entry.y += cell.y;
					} else {
						avgPos.set(id, { name: cell.name, n: 1, x: cell.x, y: cell.y });
					}
				});

				avgPos.forEach(entry => {
					drawName(entry.x / entry.n, entry.y / entry.n, entry.name);
				});

				// draw my cells above everyone else
				let myName = '';
				let ownN = 0;
				let ownX = 0;
				let ownY = 0;
				world.mine.forEach(id => {
					const cell = world.cells.get(id);
					if (!cell) return;

					drawCell(cell);
					myName = cell.name;
					++ownN;
					ownX += cell.x;
					ownY += cell.y;
				});

				if (ownN <= 0) {
					// if no cells were drawn, draw our spectate pos instead
					const x = (world.camera.x - border.l) / gameWidth * canvas.width;
					const y = (world.camera.y - border.t) / gameHeight * canvas.height;

					ctx.fillStyle = '#faa';
					ctx.beginPath();
					ctx.moveTo(x + 5, y);
					ctx.arc(x, y, 5 * devicePixelRatio, 0, 2 * Math.PI);
					ctx.fill();
				} else {
					ownX /= ownN;
					ownY /= ownN;
					// draw name above player's cells
					drawName(ownX, ownY, myName);

					// send a hint to sigmod
					ctx.globalAlpha = 0;
					ctx.fillText(`X: ${ownX}, Y: ${ownY}`, 0, -1000);
				}
			})();

			ui.chat.matchTheme();

			requestAnimationFrame(renderGame);
		}

		renderGame();
		return render;
	})();



	// @ts-expect-error for debugging purposes. dm me on discord @8y8x to work out stability if you need something
	window.sigfix = { destructor, aux, ui, settings, sync, world, net, render };
})();