feat: matchmaker WIP

start implementing matchmaker right into the client
i'm sick of finding a new lobby when half of them are shit like Classic FFA

esbuilder.js

@@ -14,6 +14,7 @@ require('esbuild').buildSync({
 		'src/settingsui.ts',
 		'src/switches.ts',
 		'src/userscripts.ts',
+		'src/matchmaker.ts',
 		'src/utils.ts',
 	],
 	bundle: false,

src/global.d.ts

@@ -147,3 +147,14 @@ interface GameInfo {
 	/** added by us, example: Baller */
 	skin?: string
 }
+
+interface IMatchmakerCriteria {
+	minPlayers: number,
+	maxPlayers: number,
+	/** e.g. FRA */
+	regions: string[],
+	/** e.g. 'Free for All' */
+	gameModes: string[],
+	/** remaining time in seconds */
+	minRemainingTime: number,
+}

src/matchmaker.ts

@@ -0,0 +1,138 @@
+import { secondsToTimestring } from "./utils";
+// matchmaker code originally by wa#3991 / paintingofblue
+
+// my script to get all the id => string gamemode bindings as a switch:
+// https://greasyfork.org/en/scripts/468482-kraxen-s-krunker-utils
+function getGameMode(num: number) {
+	switch (num) {
+		case 0:
+			return 'Free for All';
+		case 1:
+			return 'Team Deathmatch';
+		case 2:
+			return 'Hardpoint';
+		case 3:
+			return 'Capture the Flag';
+		case 4:
+			return 'Parkour';
+		case 5:
+			return 'Hide & Seek';
+		case 6:
+			return 'Infected';
+		case 7:
+			return 'Race';
+		case 8:
+			return 'Last Man Standing';
+		case 9:
+			return 'Simon Says';
+		case 10:
+			return 'Gun Game';
+		case 11:
+			return 'Prop Hunt';
+		case 12:
+			return 'Boss Hunt';
+		case 13:
+			return 'Classic FFA';
+		case 14:
+			return 'Deposit';
+		case 15:
+			return 'Stalker';
+		case 16:
+			return 'King of the Hill';
+		case 17:
+			return 'One in the Chamber';
+		case 18:
+			return 'Trade';
+		case 19:
+			return 'Kill Confirmed';
+		case 20:
+			return 'Defuse';
+		case 21:
+			return 'Sharp Shooter';
+		case 22:
+			return 'Traitor';
+		case 23:
+			return 'Raid';
+		case 24:
+			return 'Blitz';
+		case 25:
+			return 'Domination';
+		case 26:
+			return 'Squad Deathmatch';
+		case 27:
+			return 'Kranked FFA';
+		case 28:
+			return 'Team Defender';
+		case 29:
+			return 'Deposit FFA';
+		case 30:
+			return 'Chaos Snipers';
+		case 31:
+			return 'Bighead FFA';
+		default:
+			return 'unknown';
+	}
+}
+
+const matchmakerCriteria: IMatchmakerCriteria = {
+	regions: ['FRA'],
+	gameModes: ['Free for All'],
+	minPlayers: 4,
+	maxPlayers: 6,
+	minRemainingTime: 180,
+};
+
+export function fetchGame() {
+	fetch(`https://matchmaker.krunker.io/game-list?hostname=${window.location.hostname}`)
+		.then((result) => result.json())
+		.then((result) => {
+			const games = [];
+
+			for (const game of result.games) {
+				const gameID = game[0];
+				const region = gameID.split(':')[0];
+				const playerCount = game[2];
+				const maxPlayers = game[3];
+				const map = game[4]['i'];
+				const gamemode = getGameMode(game[4]['g']);
+				const remainingTime = game[5];
+
+				if (
+					!matchmakerCriteria.regions.includes(region) ||
+					!matchmakerCriteria.gameModes.includes(gamemode) ||
+					playerCount < matchmakerCriteria.minPlayers ||
+					playerCount > matchmakerCriteria.maxPlayers ||
+					remainingTime < matchmakerCriteria.minRemainingTime ||
+					playerCount === maxPlayers ||
+					window.location.href.includes(gameID)
+				)
+					continue;
+
+				games.push({
+					gameID: gameID,
+					region: region,
+					playerCount: playerCount,
+					maxPlayers: maxPlayers,
+					map: map,
+					gamemode: gamemode,
+					remainingTime: remainingTime,
+				});
+			}
+
+			const game = games[Math.floor(Math.random() * games.length)];
+			try {
+				const text = `Game found!\n\nRegion: ${game.region}\nMap: ${game.map}\nGamemode: ${game.gamemode}\nPlayers: ${game.playerCount}/${game.maxPlayers}\nTime remaining: ${secondsToTimestring(game.remainingTime)}\n\nJoining game...`;
+				alert(text);
+				window.location.href = `https://krunker.io/?game=${game.gameID}`;
+			} catch (e) {
+				alert('Unable to find game.');
+			}
+		});
+}
+
+// TODO reimplement with menu
+// TODO add a setting that overrides the f6 key in favor of normal F6
+// TODO add gui config to this matchmaker
+// TODO change alert() to showMessageBoxSync()
+// TODO add maxPlayers setting (for example if somebody wants max 6 players to be safe & make sure to join)
+

src/preload.ts

@@ -1,6 +1,7 @@
 import { readFileSync } from 'fs';
 import { join as pathJoin, resolve as pathResolve } from 'path';
 import { ipcRenderer } from 'electron';
+import { fetchGame } from './matchmaker';
 import { createElement, hiddenClassesImages, injectSettingsCSS, toggleSettingCSS } from './utils';
 import { renderSettings } from './settingsui';
 import { compareVersions } from 'compare-versions';
@@ -35,6 +36,7 @@ export const styleSettingsCSS = {
 // Lets us exit the game lmao
 document.addEventListener('keydown', event => {
 	if (event.code === 'Escape') document.exitPointerLock();
+	if (event.key === 'F1') fetchGame();
 });
 
 document.addEventListener('DOMContentLoaded', () => {

src/utils.ts

@@ -127,3 +127,11 @@ export function hiddenClassesImages(classNumberFallback: number) {
 
 	return css;
 }
+
+export function secondsToTimestring(num: number) {
+	const minutes = Math.floor(num / 60);
+	const seconds = num % 60;
+
+	if (minutes < 1) return `${num}s`;
+	return `${minutes}m ${seconds}s`;
+}