add start of box2d physics

server/game/room/world/ship.js

@@ -1,12 +1,17 @@
 'use strict';
 
+const defaults = require('./traits/defaults.json');
+const hulls = require('./traits/hulls.json');
+
 const Body = require('./body.js');
 
 class Ship extends Body {
-	constructor(player) {
+	constructor(player, build) {
 		super();
-		
+
+		this.build = build || defaults.spawnShip.build;
 		this.player = player;
+		this.structure = hulls[this.build.hull];
 	}
 }