Matchmaking NPM

Matchmaking

Matchmaking will help you to create matches!

Installing

npm i matchmaking

How to use

####LobbyMaker

With this class you can create, list and join lobbies They can have password or be private (joined by name)

const { LobbyMaker } = require('matchmaking');

function runGame(players) {
	console.log("Game started with:");
	console.log(players);
}

function getPlayerKey(player){
	return player.id;
}

let lobby = new LobbyMaker(runGame, getPlayerKey);

let player1 = { id:20 }
let player2 = { id:21 }

// Create a room
let id = lobby.createRoom(player1, "Room 0");

// Other player joined the room
lobby.joinRoom(id, player2);

// Start game
lobby.start(id);

// Game started with:
// [ {id:20}, {id:21} ]

####FifoMatchMaker

This one is really simple, just push players to the queue, and games will be started automatically!

const { FifoMatchmaker } = require('matchmaking');

function runGame(players) {
	console.log("Game started with:");
	console.log(players);
}

let mm = new FifoMatchmaker(runGame, { checkInterval: 2000 });

let player1 = { id:1 }
let player2 = { id:2 }

// Players join match queue
mm.push(player1);
mm.push(player2);

// When there are enough players, runGame will be called

// Game started with:
// [ {id:1}, {id:2} ]

Api

Player

The player will be mentioned a lot here
By player i mean a generic object - As use in the example above, just a plain object with an id - The player can be anything and depends on your project/game

FifoMatchmaker

constructor(resolver, getKey, options) - resolver(players) - A function that will be called whenever there are enough players to start a game - players - a array with all the players in that game - getKey(player) - A function that will extract the id of a player - player - The player whose id will be extrected - options - OPTIONAL - A object with settings for the matchmaker - checkInterval - The interval in milliseconds to try to start new games - maxMatchSize - Maximum number of players in a room - minMatchSize - Minimum number of players in a room
push(player) - parameters - player - The object containing all player information - return - void
leaveQueue(player) - parameters - player - The player with its ID - return - void

LobbyMaker

constructor(resolver, options) - parameters - resolver(players) - A function that will be called manualy or automatically when there are enough players to start a game, if this options hass been set - players - a array with all the players in that game - getKey(player) - A function that given a player, returns its unique identifier (id)
createRoom(player, roomName, options) - parameters - player - The object containing all player information - roomName - The name to be displayed in room listing - options - OPTIONAL - A object with settings for the matchmaker - private - Should this lobby appear in public listing? - password - If set, players will have to use this password to join the lobby, leavy empty to create a open lobby - maxLobbySize - Maximum number of players in a room - minLobbySize - Minimum number of players in a room - autoStartWithMinSize - If true, the lobby will autostart when MinSize is reached - autoStartWithMaxSize - If true, the lobby will autostart when lobby is full is reached - return - The unique room Identifier (number)
leaveRoom = (roomId, player) - parameters - roomId - The room to be leaved - player - The player that will leave the room
deleteRoom(roomId) - parameters - roomId - The room id that will be deleted - return - void
listRooms() - return - RoomInfo[] - A array of RoomInfo objects, each containing: {id, name, passwordIsRequired, currentPlayers, MaxPlayers}
joinRoom(roomId, newPlayer, password) - parameters - roomId - Room to be joined - newPlayer - the player object that will join - password - OPTIONAL - If the room require password
startGame(roomId) - parameters - roomId - The room to start the game, this will call the resolver function passed in constructor - return - void

Error handling

All functions that can return error, will do returning e Error object - To check for errors do the followig - mehtod() instanceof Error - Error class documentation