Expansion Galactic SatNav

this.name           = "tws_satnav_main";
this.author         = "Wyn Sleeman";
this.copyright      = "(C) 2014 Wyn Sleeman";
this.licence        = "CC-NC-by-SA 3.0";
this.description    = "Navigation aid for long journeys";
this.version        = "0.01";
this.equipmentName  = "EQ_TWS_GALACTICSATNAV";
"use strict";

//WorldSpace Handlers
this.startUp = function()
{
	this._finalDestination = -1;
	if(missionVariables.tws_satnav_finalDestination === null) return;
	
	this._finalDestination = missionVariables.tws_satnav_finalDestination;
}

this.playerWillSaveGame = function(message)
{
	if(this._okToContinue() == true)
	{
		missionVariables.tws_satnav_finalDestination = this._finalDestination;
	}
	else
	{
		missionVariables.tws_satnav_finalDestination = null;
	}
}

this.guiScreenChanged = function(to, from)
{
	if(guiScreen != "GUI_SCREEN_SHORT_RANGE_CHART") return;
	if(this._okToContinue() == false) return;
	if(this._finalDestination == system.ID) 
	{
		this._finalDestination = -1;
		return;
	}
    player.consoleMessage("Routes to " + System.systemNameForID(this._finalDestination), 10);

	this._destinationInfo = System.infoForSystem(system.info.galaxyID, this._finalDestination);

	this._route = system.info.routeToSystem(this._destinationInfo,"OPTIMIZED_BY_JUMPS");
	if(! this._route) return;
	this._showRouteDescription("Shortest");

	this._route = system.info.routeToSystem(this._destinationInfo,"OPTIMIZED_BY_TIME");
	if(! this._route) return;

	this._showRouteDescription("Quickest");
}

this.playerEnteredNewGalaxy = function(galaxyNumber)
{
	this._finalDestination = -1;
}

this.shipExitedWitchspace = function()
{
	if(this._okToContinue()==false) return;
	if(this._finalDestination == system.ID) 
	{
		player.consoleMessage("SatNav OFF: You have arrived at " + System.systemNameForID(this._finalDestination) , 6);
		this._finalDestination = -1;
		return;
	}
}


//Internal Functions
this._setDestination = function()
{
	if(player.ship.targetSystem >= 0)
	{
		this._finalDestination = player.ship.targetSystem;
		player.consoleMessage("SatNav ON. Destination: " + System.systemNameForID(player.ship.targetSystem), 6);
	}
}
this._okToContinue = function()
{
	if(player.ship.equipmentStatus("EQ_ADVANCED_NAVIGATIONAL_ARRAY") != "EQUIPMENT_OK") return false;
	if(player.ship.equipmentStatus(this.equipmentName) != "EQUIPMENT_OK") return false;
	if(this._finalDestination == -1) return false;
	return true;
}
this._showRouteDescription = function(routeType)
{
	let _result = routeType;
	if(this._route.route.length <= 2)
	{
		_result += ": Direct to " + System.systemNameForID(this._finalDestination) + " (";
	}
	else 
	{
		_result += ": via " + System.systemNameForID(this._route.route[1]) + " ("+ formatInteger(this._route.route.length -1) + " J, ";
	}
	_result += formatCredits(this._route.distance, true, false) + " LY, " + formatCredits(this._route.time, true, false) +" hrs)";
	
	player.consoleMessage( _result, 10);
	delete _result;
}

this.name           = "tws_satnav_activation";
this.description    = "Activation Handler for TWS Satnav"
this.author         = "Wyn Sleeman";
this.copyright      = "© 2014 Wyn Sleeman";
this.license		= "CC-BY-NC-SA 4.0";
this.version        = "0.0";

"use strict";
this.activated = function ()
{
	worldScripts["tws_satnav_main"]._setDestination();
}