Problem in my script! (Complex Script)

$.echo("> Anchor loaded.");
// Welcome to Anchor.js
// Devlopped by DeVoidCoder, Zekikez & Alde.



// * DECLARING THE VARIABLES *
//var ID_MOVE = $.findPacketId("MOVE");
var ID_PLAYERHIT = $.findPacketId("PLAYERHIT");
var ID_SHOOT = $.findPacketId("SHOOT");
var ID_SHOOT2 = $.findPacketId("SHOOT2");
var ID_UPDATE = $.findPacketId("UPDATE");
var ID_NEW_TICK = $.findPacketId("NEW_TICK");
var ID_CREATE_SUCCESS = $.findPacketId("CREATE_SUCCESS");
var ID_PLAYER_TEXT = $.findPacketId("PLAYERTEXT");
var ID_TEXT = $.findPacketId("TEXT");
var ID_FAILURE = $.findPacketId("FAILURE");
var ID_AOE = $.findPacketId("AOE");
var ID_ESCAPE = $.findPacketId("ESCAPE");
var ID_USE_ITEM = $.findPacketId("USEITEM");
var ID_NOTIFICATION = $.findPacketId("NOTIFICATION");
var ID_MAPINFO = $.findPacketId("MAPINFO");

var STATDATA_MAXHEALTH = 0;
var STATDATA_HEALTH = 1;
var STATDATA_DEFENCEBONUS = 49

var nexusHealthPercentage = 25; // <--- modify this to the health % you want to nexus at
var anchorHealthPercentage = 80; // <--- modify this to the health % you want to tp to the anchor at
var playerObjectId = -1;
var _allowAutoNexus = true;  // <--- set to false if you do not want it to auto nexus

var health = -1;
var maxHealth = -1;
var defenceBonus = -1;
var bulletIdDamageMap = {};
var bEscapeToNexusSent = false; // true = don't confirm any more hits
var playerLocation = null;

var SLOTDATA_HEALTHPOT = 69;
var TIMEOUT_OFFSET = 250; // the amount of time before allowing to use the health potion again

var _potHealthPercentage = 40; // <--- modify this to the health % you want to pot at

var _clientTime = 0;
var _potHealthCount = 0;
var _skipHealthPotion = true;
var _timeoutAt = -1; 
var _mapName = "Nexus";
// * END OF VARIABLES *





function onServerPacket(event) {

var packet = event.getPacket();
	
	switch (packet.id()) {
		
			case ID_CREATE_SUCCESS: {
				player_id = packet.objectId;
				break;
			}
			
			case ID_MAPINFO: {
				_mapName = packet.name;
				break;
			}			
			
			case ID_SHOOT2:
			case ID_SHOOT: {
				// store projectile damage...
				useBestEscape(event)
				$.echo("# Trying to find the best escape. Line 76");
				break;
			}
			
			
			
			case ID_UPDATE: {
				for (var i = 0; i < packet.newObjs.length; i++) {
					var objectData = packet.newObjs[i];
					if (objectData.status.objectId == playerObjectId) {
						for (var j = 0; j < objectData.status.data.length; j++) {
							var statData = objectData.status.data[j];
							// update player data...
							if (statData.obf0 == STATDATA_MAXHEALTH) {
							maxHealth = statData.obf1;
							} else if (statData.obf0 == STATDATA_HEALTH) {
							health = statData.obf1;
							} else if (statData.obf0 == STATDATA_DEFENCEBONUS) {
							defenceBonus = statData.obf1;
							} else if (statData.obf0 == SLOTDATA_HEALTHPOT) {
							_potHealthCount = statData.obf1;
							}
						}
					}
				}
				break;
			}
			
			
			case ID_NEW_TICK: {
			for (var i = 0; i < packet.statuses.length; i++) {
				var status = packet.statuses[i];
				if (status.objectId == playerObjectId) {
					for (var j = 0; j < status.data.length; j++) {
						var statData = status.data[j];
						// update the player's health
						if (statData.obf0 == STATDATA_HEALTH) { //THE PROBLEM IS HERE. IT RETURNS -1! :'(
							health = statData.obf1;
						} else if (statData.obf0 == STATDATA_DEFENCEBONUS) {
							defenceBonus = statData.obf1;
						} else if (statData.obf0 == SLOTDATA_HEALTHPOT) { 
							_potHealthCount = statData.obf1;
							$.echo("health pot count: " + _potHealthCount);
						}
					}
				}
			}
			break;
		}
		
		
		
		
			case ID_AOE: {
			if (playerLocation != null && playerLocation.distanceTo(packet.pos) <= packet.radius) {
				// predict what the damage will be
				health -= getDamageEstimate(packet.damage);
				if (_mapName != "Nexus" && useBestEscape())
					event.cancel();
			}
			break;
		}
			
			
			
		}
}












function onClientPacket(event) {

	var packet = event.getPacket();
		
		if (packet == "PLAYERTEXT"){
		
				var text = packet.text;
				
			
					if(text.indexOf('/anchor') >= 0){
					
						var anchor = text.substring(8, text.length());
						alert(event,"> Anchor set to : " + anchor)
						$.echo("# Anchor set to " + anchor + ".");
					
					
					}//End of if text = /anchor
					
		}//End of if(packet == idplayertxt)	
		
		if (packet == "PLAYERHIT"){
			useBestEscape(event)
			$.echo("# Trying to find the best escape. Line 176");
		}
		
}//End of function.








//Display messages in red (from and by the client)
function alert(event,text){ //This is used to draw the "# has left"
	$.echo("> FAILURE : " + text + health + " : " + maxHealth);
	var failurePacket = event.createPacket(ID_FAILURE);
	failurePacket.errorId = 99;
	failurePacket.errorDescription = text;
	event.sendToClient(failurePacket);
}





// Determines best action based on current health percentage
// returns true if an action happens 

function useBestEscape(event) {
	// if the predicted health percentage is below nexusHealthPercentage...
	var curPercentage = 100 * health / maxHealth;
	
	if (curPercentage < nexusHealthPercentage) {
		useNexus();
		alert(event,"AutoNexus")
		
		//return true;
	}
	
		if (curPercentage < anchorHealthPercentage) {
		useAnchor();
		alert(event,"Anchor")
		//return true;
	}
	
	else if (!_skipHealthPotion && _potHealthCount > 0 && curPercentage <= _potHealthPercentage) {
		useHealthPotion();
		alert(event,"Drank HP")
		//return true;
	}
	//return false;
}

// creates ESCAPE packet and sends to server
function useNexus() {
	$.echo("Used Nexus at " + health + " HP.");
	if (health < 100) {$.echo("That was close!");}
	var escapePacket = $.createPacket(ID_ESCAPE);
	$.sendToServer(escapePacket);
	bEscapeToNexusSent = true; // this prevents any additional packets from being sent
}


function useAnchor() {

	var playertextPacket = event.createPacket(ID_PLAYERTEXT);
	playertextPacket.text = "/teleport " + anchor;
	event.sendToServer(playertextPacket);
	
	alert(event,"Teleported to the anchor at " + health + " HP.")
	$.echo("Teleported to the anchor at " + health + " HP.");
	if (health < 100) {$.echo("That was close!");}//Messin' around :3
	
	bEscapeToNexusSent = true; // this prevents any additional packets from being sent
}





// creates a USE_ITEM packet with the health potion details
function useHealthPotion() {
	_potHealthCount--;
	$.echo("Used Health Potion: " + _potHealthCount);
	var useitemPacket = $.createPacket(ID_USE_ITEM);
	useitemPacket.time = _clientTime + 50; // ? not sure if increment is needed
	useitemPacket.slotObject = $.createSlotObject();
	useitemPacket.slotObject.objectType = 2594; // health potion type
	useitemPacket.slotObject.slotId = 254; // health potion slotid
	useitemPacket.slotObject.objectId = playerObjectId; // player id
	useitemPacket.itemUsePos = playerLocation; // should randomly offset a bit. (this should be where the cursor is pointing)
	useitemPacket.useType = 0;
	$.sendToServer(useitemPacket);
	// Notify user that a potion was used and show the remaining number of pots
	_skipHealthPotion = true;
	_timeoutAt = _clientTime + TIMEOUT_OFFSET;
}