add basic game classes

server/game/room/index.js

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+'use strict';
+
+const World = require('./world');
+
+class Room {
+	constructor() {
+		this.players = new Set();
+		this.teamA = new Set();
+		this.teamB = new Set();
+		this.world = new World();
+		this.name = (Math.random() * 100000 | 0).toString(36);
+	}
+
+	add(player) {
+		player.room = this;
+		player.connection.room = this.name;
+		this.players.add(player);
+		this.setTeam(player, this.teamA.size > this.teamB.size ? 'b' : 'a');
+		this.world.addPlayer(player);
+	}
+
+	setTeam(player, team) {
+		this.teamA.delete(player);
+		this.teamB.delete(player);
+		(team == 'a' ? this.teamA : this.teamB).add(player);
+		player.team = team;
+	}
+
+	get playerCount() {
+		return this.players.size;
+	}
+
+	get full() {
+		return this.playerCount >= 8;
+	}
+}
+
+module.exports = Room;

server/game/room/world/body.js

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+'use strict';
+
+class Body {
+	constructor() {
+		
+	}
+}
+
+module.exports = Body;

server/game/room/world/index.js

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+'use strict';
+
+const Ship = require('./ship.js');
+
+class World {
+	constructor() {
+		this.box2d = false;
+		this.bodies = new Set();
+		this.structures = new Set();
+		this.asteroids = new Set();
+		this.ships = new Map();
+		this.players = new Set();
+	}
+
+	addPlayer(player) {
+		this.players.add(player);
+		this.ships.set(player, new Ship(player));
+	}
+
+	removePlayer(player) {
+		removeBody(player.ship);
+		this.ships.delete(player);
+		this.players.delete(player);
+	}
+
+	removeBody(body) {
+		// Remove from Box2d.
+	}
+
+	tick() {
+
+	}
+}
+
+module.exports = World;

server/game/room/world/ship.js

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+'use strict';
+
+const Body = require('./body.js');
+
+class Ship extends Body {
+	constructor(player) {
+		super();
+		
+		this.player = player;
+	}
+}
+
+module.exports = Ship;