Sprayer = {};


function Sprayer.prerequisitesPresent(specializations)
    return true;
end;

function Sprayer:load(xmlFile)

    self.setIsTurnedOn = SpecializationUtil.callSpecializationsFunction("setIsTurnedOn");

    self.sprayValves = {};

    local psFile = getXMLString(xmlFile, "vehicle.sprayParticleSystem#file");
    if psFile ~= nil then
        local i=0;
        while true do
            local baseName = string.format("vehicle.sprayValves.sprayValve(%d)", i);
            local node = getXMLString(xmlFile, baseName.. "#index");
            if node == nil then
                break;
            end;
            node = Utils.indexToObject(self.components, node);
            if node ~= nil then
                local sprayValve = {};
                sprayValve.particleSystems = {};
                Utils.loadParticleSystem(xmlFile, sprayValve.particleSystems, "vehicle.sprayParticleSystem", node, false, nil, self.baseDirectory);
                table.insert(self.sprayValves, sprayValve);
            end;
            i = i+1;
        end;
    end;

    local spraySound = getXMLString(xmlFile, "vehicle.spraySound#file");
    if spraySound ~= nil and spraySound ~= "" then
        spraySound = Utils.getFilename(spraySound, self.baseDirectory);
        self.spraySound = createSample("spraySound");
        self.spraySoundEnabled = false;
        loadSample(self.spraySound, spraySound, false);
        self.spraySoundPitchOffset = Utils.getNoNil(getXMLFloat(xmlFile, "vehicle.spraySound#pitchOffset"), 1);
        self.spraySoundVolume = Utils.getNoNil(getXMLFloat(xmlFile, "vehicle.spraySound#volume"), 1);
    end;

    self.isTurnedOn = false;
	self.literPerSecond = Utils.getNoNil(getXMLFloat(xmlFile, "vehicle.literPerSecond#value"), 1);
    self.speedViolationMaxTime = 2500;
    self.speedViolationTimer = self.speedViolationMaxTime;
end;

function Sprayer:delete()

    for k,sprayValve in pairs(self.sprayValves) do
        Utils.deleteParticleSystem(sprayValve.particleSystems);
    end;

    if self.spraySound ~= nil then
        delete(self.spraySound);
    end;
end;

function Sprayer:mouseEvent(posX, posY, isDown, isUp, button)
end;

function Sprayer:keyEvent(unicode, sym, modifier, isDown)
end;

function Sprayer:update(dt)

    if self:getIsActiveForInput() then
        if InputBinding.hasEvent(InputBinding.IMPLEMENT_EXTRA) then
            self:setIsTurnedOn(not self.isTurnedOn);
        end;
    end;
	if self.isTurnedOn then
			if self.fillLevel == 0 then
				if self.spraySoundEnabled then
					stopSample(self.spraySound);
					self.spraySoundEnabled = false;
				end;
				Utils.setEmittingState(self.sprayParticleSystems, false)
				self.isTurnedOn = false; 
			else 
				local difficultyMultiplier = math.max(3 * (3 - g_currentMission.missionStats.difficulty), 1);
				local deltaLevel = FruitUtil.fruitIndexToDesc[self.currentFillType].literPerQm * difficultyMultiplier * self.literPerSecond;
				self:setFillLevel(self.fillLevel-deltaLevel, self.currentFillType);
				for k,cuttingArea in pairs(self.cuttingAreas) do
					local x,y,z = getWorldTranslation(cuttingArea.start);
					local x1,y1,z1 = getWorldTranslation(cuttingArea.width);
					local x2,y2,z2 = getWorldTranslation(cuttingArea.height);
					Utils.updateSprayArea(x, z, x1, z1, x2, z2);
				end;
				if not self.spraySoundEnabled and self:getIsActiveForSound() then
					playSample(self.spraySound, 0, self.spraySoundVolume, 0);
					setSamplePitch(self.spraySound, self.spraySoundPitchOffset);
					self.spraySoundEnabled = true;
				end;
				Utils.setEmittingState(self.sprayParticleSystems, true)
			end;
		else
			Utils.setEmittingState(self.sprayParticleSystems, false)		
			if self.spraySoundEnabled then
		        stopSample(self.spraySound);
		        self.spraySoundEnabled = false;
			end;
			self.isTurnedOn = false;
		end; 

    if self.isTurnedOn and self:getIsActive() then

        if self:doCheckSpeedLimit() and self.lastSpeed*3600 > 31 then
            self.speedViolationTimer = self.speedViolationTimer - dt;
        else
            self.speedViolationTimer = self.speedViolationMaxTime;
        end;

        if self.speedViolationTimer > 0 then
            for k,cuttingArea in pairs(self.cuttingAreas) do
                local x,y,z = getWorldTranslation(cuttingArea.start);
                local x1,y1,z1 = getWorldTranslation(cuttingArea.width);
                local x2,y2,z2 = getWorldTranslation(cuttingArea.height);
                Utils.updateSprayArea(x, z, x1, z1, x2, z2);
            end;
        end;

        if not self.spraySoundEnabled and self:getIsActiveForSound() then
            playSample(self.spraySound, 0, self.spraySoundVolume, 0);
            setSamplePitch(self.spraySound, self.spraySoundPitchOffset);
            self.spraySoundEnabled = true;
        end;

    else
        self.speedViolationTimer = self.speedViolationMaxTime;
    end;

    if not self.isTurnedOn and self.spraySoundEnabled then
        stopSample(self.spraySound);
        self.spraySoundEnabled = false;
    end;

end;

function Sprayer:draw()

    if self.isTurnedOn then
        g_currentMission:addHelpButtonText(string.format(g_i18n:getText("turn_off_OBJECT"), self.typeDesc), InputBinding.IMPLEMENT_EXTRA);
    else
        g_currentMission:addHelpButtonText(string.format(g_i18n:getText("turn_on_OBJECT"), self.typeDesc), InputBinding.IMPLEMENT_EXTRA);
    end;

    if math.abs(self.speedViolationTimer - self.speedViolationMaxTime) > 2 then
        g_currentMission:addWarning(g_i18n:getText("Dont_drive_to_fast") .. "\n" .. string.format(g_i18n:getText("Cruise_control_levelN"), "2", InputBinding.getButtonKeyName(InputBinding.SPEED_LEVEL2)), 0.07+0.022, 0.019+0.029);
    end;
end;

function Sprayer:onDetach()
    if self.deactivateOnDetach then
        Sprayer.onDeactivate(self);
    else
        Sprayer.onDeactivateSounds(self);
    end;
end;

function Sprayer:onLeave()
    if self.deactivateOnLeave then
        Sprayer.onDeactivate(self);
    else
        Sprayer.onDeactivateSounds(self);
    end;
end;

function Sprayer:onDeactivate()
    self.speedViolationTimer = self.speedViolationMaxTime;
    self:setIsTurnedOn(false)
    Sprayer.onDeactivateSounds(self);
end;

function Sprayer:onDeactivateSounds()
    if self.spraySoundEnabled then
        stopSample(self.spraySound);
        self.spraySoundEnabled = false;
    end;
end;

function Sprayer:setIsTurnedOn(turnedOn)
    self.isTurnedOn = turnedOn;
    for k,sprayValve in pairs(self.sprayValves) do
        Utils.setEmittingState(sprayValve.particleSystems, self.isTurnedOn);
    end;
    self.speedViolationTimer = self.speedViolationMaxTime;
end;