--
--fueldisplay Specialization
--zeigt den Tankfüllstand in Leds an - 8 Leds leuchten Tank voll
--weniger als 15 l im Tank wird ein Warnton ausgegeben und ein Reserve Symbol im Dashboard leuchtet auf
--
--ModDes.xml
--<specialization name="fueldisplay" className="fueldisplay" filename="fueldisplay.lua"/>
--<specialization name="fueldisplay" />
--
--Vehicle.xml
--<fuelIndicators count="8" index="0>38">
		--<fuelIndicator1 rotNode="0>38|0"/>
		--<fuelIndicator2 rotNode="0>38|1"/>
		--<fuelIndicator3 rotNode="0>38|2"/>
		--<fuelIndicator4 rotNode="0>38|3"/>
		--<fuelIndicator5 rotNode="0>38|4"/>
		--<fuelIndicator6 rotNode="0>38|5"/>
		--<fuelIndicator7 rotNode="0>38|6"/>
		--<fuelIndicator8 rotNode="0>38|7"/>
	--</fuelIndicators>
--
--<ledreserve index="0>X" />
--

fueldisplay = {};
function fueldisplay.prerequisitesPresent(specializations)
    return SpecializationUtil.hasSpecialization(Motorized, specializations);
end;
function fueldisplay:load(xmlFile)

	self.updateFuelIndicators = SpecializationUtil.callSpecializationsFunction("updateFuelIndicators");
	self.ledreserve = Utils.indexToObject(self.rootNode, getXMLString(xmlFile, "vehicle.ledreserve#index"));
	self.ledreserveActive = false;
	self.reserve = 15;
	self.fuelIndicatorsGroup = Utils.indexToObject(self.components, getXMLString(xmlFile, "vehicle.fuelIndicators#index"));
	self.numFuelIndicators = Utils.getNoNil(getXMLInt(xmlFile, "vehicle.fuelIndicators#count"), 0);
	self.fuelIndicators = {};
    for i=1, self.numFuelIndicators do
        local objname = string.format("vehicle.fuelIndicators.fuelIndicator" .. "%d", i);
		self.fuelIndicators[i] = {};
        self.fuelIndicators[i].rotNode = Utils.indexToObject(self.components, getXMLString(xmlFile, objname .. "#rotNode"));
		setVisibility(self.fuelIndicators[i].rotNode,true);
    end;

    fuelwarningSoundFile = Utils.getFilename("Sounds/fuelwarning.wav", self.baseDirectory);
    self.fuelwarningSoundId = createSample("fuelwarningSound");
    loadSample(self.fuelwarningSoundId, fuelwarningSoundFile, false);
    self.fuelwarningPlaying = false;
	self.playedSound = false;
	
end;
function fueldisplay:delete()
end;
function fueldisplay:mouseEvent(posX, posY, isDown, isUp, button)
end;
function fueldisplay:keyEvent(unicode, sym, modifier, isDown)
end;
function fueldisplay:update(dt)

	if self.isEntered then
		if self.fuelFillLevel < 15 then	--wenn weniger als 15l im Tank Beep Beep und Reserve Led leuchtet
			self.reserve = self.reserve - dt;
			if self.playedSound == false then
				playSample(self.fuelwarningSoundId,1,1,0);
				self.playedSound = true;
			end;
			self.ledreserveActive = true;
		else
			self.playedSound = false;
			self.ledreserveActive = false;
		end;
		setVisibility(self.ledreserve,self.ledreserveActive);
		self:updateFuelIndicators();
	end;
end;
function fueldisplay:updateTick(dt)
    if self:getIsActive() then
		if self.isMotorStarted then
			setVisibility(self.fuelIndicatorsGroup, true);
		else
			setVisibility(self.fuelIndicatorsGroup, false);
		end;
			end;
end;
function fueldisplay:updateFuelIndicators()
	local amountOfFuelPerIndicator = self.fuelCapacity/8;	--Anzahl der Indicatoren in der Vehicle.xml
	local timesToIterate = self.fuelFillLevel/amountOfFuelPerIndicator;
	timesToIterate = math.floor(timesToIterate);
	if self.oldTimesToIterate ~= timesToIterate then
		for i=1, self.numFuelIndicators do
			setVisibility(self.fuelIndicators[i].rotNode, false);
		end;
		for i=1, timesToIterate do
			setVisibility(self.fuelIndicators[i].rotNode, true);
		end;
	end;
	self.oldTimesToIterate = timesToIterate;
end;
function fueldisplay:draw()
end;