index.js

var navigation = {
	x: -2,
	y: 4,
	z: 7,
	speed: "raaaaid"
};

var ship = {
	powerOn: false,
	modules: [],
	antenna: {
		active: false
	}
};

var radio = {
	range: {
		low: 88,
		high: 108,
	},
	frequency: 0,
	message: "Bugs are cool.",
	beacon: false
};
var essential;

function powerOn() {
	if (ship.powerOn = false) {
		ship.powerOn = true;
	}
}

function countModules() {
	return availableModules.length;
}

function countEssential() {
	for(var i = 0; i < countModules(); i++) {
		if(availableModules[i].essential) {
			essential++;
		} 
	}
	return essential;
}

function loadModule(index) { 
	availableModules[index].enabled = true;
	ship.modules.push(availableModules[index]);
}

function getLifeSupport() {
	var arrayLength = countModules();
	
	for(var i = 0; i < arrayLength; i++){
		if(availableModules[i].name == "life-support") {
			loadModule(i);
		}
	}
}

getLifeSupport();

function findModuleIndex(name) {
	for(var i = 0; i < countModules(); i++) {
		if(availableModules[i].essential && availableModules[i].name == name) {
			return i;
		} 
	}
}

loadModule(findModuleIndex("propulsion"));
loadModule(findModuleIndex("navigation"));

function resetLARRY() {
	for(var i = 0; i < 10; i++) {
		LARRY.quack(); 
	}
}

resetLARRY();

findModuleIndex("communication");
loadModule(findModuleIndex("communication"));

function setMessage() {
	radio.message = JSON.stringify(navigation);
}

setMessage();

function activateBeacon() {
	radio.beacon = true;
}

activateBeacon();

function setFrequency() {
	radio.frequency = (radio.range.low + radio.range.high) / 2;
}

function initialize() {
	navigation.x = 0;
	navigation.y = 0;
	navigation.z = 0;
}

function calibrateX() {
	for(var i = 0; i < 13; i++) {
		var signal = checkSignal();
		if(signal !== undefined) {
			navigation.x = signal;
			break;
		}
	}
}

function calibrateY() {
	for(var i = 0; i < 61; i++) {
		var signal = checkSignal();
		if(signal !== undefined) {
			navigation.y = signal;
			break;
		}
	}
}

function calibrateZ() {
	for(var i = 0; i < 61; i++) {
		var signal = checkSignal();
		if(signal !== undefined) {
			navigation.z = signal;
			break;
		}
	}
}

function calibrate() {
	calibrateX();
	calibrateY();
	calibrateZ();
}

function setSpeed(speed) {
	var speed = parseInt(speed);
	if(speed >= 0) {
		navigation.speed = speed;
	}
}

function activateAntenna() {
	ship.antenna.active = true;
}

activateAntenna();

function sendBroadcast() {
	for(var i = 0; i < 101; i++) {
		broadcast();
	}
}

function disableFrequency() {
	radio.frequency = 0;
}

function configureBroadcast() {
	disableFrequency();
	setFrequency();
	activateAntenna();
	sendBroadcast();
}

configureBroadcast();

function decodeMessage(message){

	var decryptedMessage = message

	.replace(/1/g,'i')
	.replace(/2/g,'u')
	.replace(/3/g,'e')
	.replace(/4/g,'a')
	.replace(/5/g,'y')
	.replace(/0/g,'o');

	return decryptedMessage;
}

function returnToEarth() {
	  var x = broadcast('x');
	  var y = broadcast('y');
	  var z = broadcast('z');

	  navigation.x = parseInt(decodeMessage(x), 16);
	  navigation.y = parseInt(decodeMessage(y), 16);
	  navigation.z = parseInt(decodeMessage(z), 16);
}

returnToEarth();