Added listen variable to controls

This makes it possible to send controls over socket.io

lib/controls/KeyControls.js

@@ -1,7 +1,8 @@
 class KeyControls {
   
-	constructor() {
+	constructor(listen = true) {
 		this.keys = {};
+		if (listen) {
 			// Bind event handlers
 			document.addEventListener("keydown", e => {
 				if ([37, 38, 39, 40].indexOf(e.which) >= 0) {
@@ -13,6 +14,7 @@ class KeyControls {
 				this.keys[e.which] = false;
 			}, false);
 		}
+	}
 
 	get action() {
 		// Spacebar

lib/controls/MouseControls.js

@@ -1,17 +1,21 @@
 class MouseControls {
-	constructor(container) {
+	constructor(container, listen = true) {
 		this.el = container || document.body;
 		// State
 		this.pos = { x: 0, y: 0 };
 		this.isDown = false;
 		this.pressed = false;
 		this.released = false;
+
+		if (listen) {
 			// Handlers
 			document.addEventListener("mousemove", this.move.bind(this), false);
 			document.addEventListener("mousedown", this.down.bind(this), false);
 			document.addEventListener("mouseup", this.up.bind(this), false);
 		}
 
+	}
+
 	mousePosFromEvent({ clientX, clientY }) {
 		const { el, pos } = this;
 		const rect = el.getBoundingClientRect();