Realm Relay auto nexus/pot

// autonexus_pot.js
// original: autonexus.js by DeVoidCoder
// modified by: zekikez

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_CREATE_SUCCESS = $.findPacketId("CREATE_SUCCESS");
var ID_NEW_TICK = $.findPacketId("NEW_TICK");
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 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;

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

var _potHealthPercentage = 35; // <--- 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";

function onClientPacket(event) {
	if (bEscapeToNexusSent) {
		event.cancel();
		return;
	}
	var packet = event.getPacket();
	if (packet.time)
	{
		_clientTime = packet.time;
		if (_skipHealthPotion && _timeoutAt < _clientTime)
			_skipHealthPotion = false;
	}
	switch (packet.id()) {
		case ID_MOVE: {
			playerLocation = packet.newPosition;
			break;
		}
		case ID_PLAYERHIT: {
			// predict what the damage will be
			health -= getDamageEstimate(bulletIdDamageMap[packet.bulletId]);
			if (_mapName != "Nexus" && useBestEscape())
					event.cancel();
			break;
		}
	}
}

function onServerPacket(event) {
	var packet = event.getPacket();
	switch (packet.id()) {
		case ID_MAPINFO: {
			_mapName = packet.name;
			break;
		}	
		case ID_SHOOT2:
		case ID_SHOOT: {
			// store projectile damage...
			bulletIdDamageMap[packet.bulletId] = packet.damage;
			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_CREATE_SUCCESS: {
			// keep the player's objectId
			playerObjectId = packet.objectId;
			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) {
							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 getDamageEstimate(baseDamage) {
        // not a perfect damage calculation at all, but good enough for govt work
        var damage = baseDamage - defenceBonus;
        if (damage < 0.15 * baseDamage) {
			damage = 0.15 * baseDamage;
        }
        if (isNaN(damage)) {
			// return 100; 
			return 0; // if damage is undefined then just wait for next tick to health update.
        }
        return damage;
}


// Determines best action based on current health percentage
// returns true if an action happens 
function useBestEscape() {
	// if the predicted health percentage is below nexusHealthPercentage...
	var curPercentage = 100 * health / maxHealth;
	//$.echo("Current Health: " + health + " / " + maxHealth + " = "  + curPercentage);
	if (_allowAutoNexus && curPercentage <= nexusHealthPercentage) {
		useNexus();
		return true;
	}
	else if (!_skipHealthPotion && _potHealthCount > 0 && curPercentage <= _potHealthPercentage) {
		useHealthPotion();
		return true;
	}
	return false;
}

// creates ESCAPE packet and sends to server
function useNexus() {
	$.echo("Used Nexus");
	var escapePacket = $.createPacket(ID_ESCAPE);
	$.sendToServer(escapePacket);
	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
	autoNexusPot_Notify("Used Health Potion! Count: " + _potHealthCount);
	_skipHealthPotion = true;
	_timeoutAt = _clientTime + TIMEOUT_OFFSET;
}

function autoNexusPot_Notify(text) {
	var notificationPacket = $.createPacket(ID_NOTIFICATION);
	notificationPacket.objectId = playerObjectId;
	notificationPacket.message = "{\"key\":\"blank\",\"tokens\":{\"data\":\"" + text + "\"}}";
	notificationPacket.color = 0x33FFFF;;
	$.sendToClient(notificationPacket);
}