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attempt to index field 'torqueCurve' (a nil value)

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Created23.09.2017 03:47


Carter Nb (Unknown) 23.09.2017 03:47
I am trying to use the function VehicleMotor:getTorque(), but whenever I do it gives me the error:
Error: dataS/scripts/vehicles/VehicleMotor.lua(248) : attempt to index field 'torqueCurve' (a nil value)
here is my entire script:
torque = VehicleMotor:getTorque(40, true)

I tried putting a period instead of a colon in between Motor and getTorque, but that gives me errors too
I also errors trying to use getLastSpeed( lastSpeed value is nil error) and geLastMotorRpm,(can't quite remember the error here, if the other two are solved I'll post this error too) all of these errors occur within the scripts of giant's software, not in my code
please help
Emil Drefers (Unknown) 26.09.2017 10:36
Hi,

you can find the source code here:
https://gdn.giants-software.com/documentation_scripting.php?version=script&category=69&class=3543

You might also consider how you are calling the function ...

VehicleMotor.getTorque(self.vehicleMotor, 40, true)
or
self.vehicleMotor:getTorque(40, true)


To me, it looks like the vehicle motor has not been initialized correctly.

Cheers,
Emil
Carter Nb (Unknown) 27.09.2017 13:46
now it just says: attempt to index local 'self' (a nil value)
in my script, using either self.vehicleMotor:getTorque
or VehicleMotor.getTorque(self.vehicleMotor,

here is my new code (does not work)
function Ekotune:draw(self)
torque = VehicleMotor.getTorque(self.vehicleMotor, 40, true);
rpm = VehicleMotor.getlastMotorRpm(self.vehicleMotor);
hpPower = (torque*1000 * rpm*math.pi/30)/735.49875;
-- local hpPower = power/735.49875;
print("torque:" .. torque)
print("rpm" .. rpm)
print("power" .. power)
print("hp" .. hpPower)
end;

ALSO, some functions like VehicleMotor:getTorqueCurve() don't produce any errors, but using a print command, dont print anything


Emil Drefers (Unknown) 04.10.2017 07:05
Hi,

well, self.vehicleMotor must have been initialized, otherwise nothing works correctly ;)
So, do you initialize this variable?

Cheers,
Emil
Carter Nb (Unknown) 04.10.2017 13:20
so how would I initialized the variable? something like this?
self.vehicleMotor = VehicleMotor
Emil Drefers (Unknown) 04.10.2017 15:26
Hi,

well that depends on what the variable has to represent.
A variable representing a floating point number would be
local variableX = 2.0;

But, in the case of the VehicleMotor you are using a seperate object which needs to be instantiated.
So, in you need to call a 'constructor'.

self.vehicleMotor = VehicleMotor:new(...)

Please pay attention to the arguments of the 'constructor';
https://gdn.giants-software.com/documentation_scripting.php?version=script&category=69&class=3543#new48043

Cheers,
Emil
Carter Nb (Unknown) 05.10.2017 02:38
I tried but once again I have an error, my code:
self.vehicleMotor = VehicleMotor:new(vehicle, 1000, 2200, 30, 15, AnimCurve:new( interpolFunction, interpolDegree ), 1.5, 20, 40, 20, 200, 40, 250, 1, 100, nil, 83, 1) -- error occurs here
print(VehicleMotor:getTorqueCurve())

error: Ekotune_mod.lua:43: attempt to index global 'self' (a nil value)


Emil Drefers (Unknown) 05.10.2017 06:31
Hi,

well this line of code must be placed inside a 'valid environment'.
If you show us your complete script, we might be able to help you.

Cheers,
Emil
Carter Nb (Unknown) 05.10.2017 13:13
the -- were things I was trying out that didn't work ignore those

Ekotune = {}
torqueCurve = {}
table.insert(torqueCurve, 0.9)
table.insert(torqueCurve, 0.97)
table.insert(torqueCurve, 1)
table.insert(torqueCurve, 1)
table.insert(torqueCurve, 0.88)
table.insert(torqueCurve, 0.72)
--torqueCurve[0.9] = torque
--torqueCurve[0.97] = torque
--torqueCurve[1] = torque
--torqueCurve[1] = torque
--torqueCurve[0.88] = torque
--torqueCurve[0.72] = torque

-- <torque normRpm="0.45" torque="0.9"/>
-- <torque normRpm="0.5" torque="0.97"/>
-- <torque normRpm="0.59" torque="1"/>
-- <torque normRpm="0.72" torque="1"/>
-- <torque normRpm="0.86" torque="0.88"/>
-- <torque normRpm="1" torque="0.72"/>
--addModEventListener(Ekotune);
--BaseMission.addVehicle(...)
--ShopScreen.onVehicleBought(...)
-- VehicleShopBase.new(...)
-- VehicleShopBase.delete(...)
-- VehicleShopBase.update(...)

-- StoreItemsUtil.getDefaultConfigId(...)
--StoreItemsUtil[]

--ShopScreen.updateShopItemList()
--ShopScreen.updateStoreItemData()
--g_shopScreen.isSelling
-- g_shopScreen.selectionList[]
-- g_shopScreen.vehicleItemTemplate[]
-- ShopScreen.canBeBought(...)
--ShopScreen.class(...)
--StoreItemsUtil.storeItems[]
local interpolFunction = linearInterpolator1
local interpolDegree = 1

function Ekotune:preLoad(savegame)


if savegame ~= nil then
end
end

function Ekotune:load(savegame)
--local Ekotune = getXMLFloat(self.xmlFile, "vehicle.Ekotune")

if savegame ~= nil then
end
end

function Ekotune:postLoad(savegame)

if savegame ~= nil then
end
end
ConfigurationUtil.registerConfigurationType("Ekotune", "Ekotune", Ekotune:preLoad(), Ekotune:load(), Ekotune:postLoad(), ConfigurationUtil.SELECTOR_MULTIOPTION)
--Vehicle:addBoughtConfiguration("Ekotune", self.xmlFile)

function Ekotune:keyEvent(unicode, sym, modifier, isDown)

end;

function Ekotune:mouseEvent(posX, posY, isDown, isUp, button)

end;

function Ekotune:delete()

end;

function Ekotune:update(dt)
--items = StoreItemsUtil.storeItemsByXMLFilename[self.configFileName:lower()]
--print(items)
--StoreItemsUtil.removeStoreItem("tractors", "zetorMajor")
--ShopScreen.updateShopItemList("tractors", false)
--configId = self.configurations("Ekotune")
--print(configId)

--Vehicle:addBoughtConfiguration("Ekotune", self.xmlFile)
end

print("test" .. 1)

function Ekotune:draw(self)

end;

--torqueCurve = VehicleMotor:getTorqueCurve()
-- VehicleMotor:new("caseIH1455", 1, 2200, 40, 16, torqueCurve, 1.5, 20, 40, 20, 250, 40, 250, 1, 10, 1, 83)
--print("I worked!")
-- ShopScreen.PAGE_CATEGORY
-- ShopScreen.onCreateCategoryIcon(...)
-- ShopScreen.onCreateCategoryName(...)
self.vehicleMotor = VehicleMotor:new(vehicle, 1000, 2200, 30, 15, AnimCurve:new( interpolFunction, interpolDegree ), 1.5, 20, 40, 20, 200, 40, 250, 1, 100, nil, 83, 1)
print(VehicleMotor:getTorqueCurve())
Emil Drefers (Unknown) 09.10.2017 09:18
Hi,

please check out the Motorized Specialization:
https://gdn.giants-software.com/documentation_scripting.php?version=script&category=70&class=3493
(starting ~line 353)

It loads/creates a valid VehicleMotor.
One thing I noted which is very likely not correct in your example is the 'torqueCurve'.

Cheers,
Emil
Carter Nb (Unknown) 09.10.2017 16:01
this is the new code, which works now

local torqueCurve = AnimCurve:new(linearInterpolator1);
newMotor = VehicleMotor:new(self, 1000, 2200, 30, 14, torqueCurve, 1.5, 20, 40, 20, 200, 40, 250, 1, 100, 0, 83, 1)
print(newMotor:getMinRpm()) -- prints 1000

how can I add this motor to a config or vehicle?

can it be added to a config like the one below?

ConfigurationUtil.registerConfigurationType("Ekotune", "Ekotune", Ekotune:preLoad(), Ekotune:load(), Ekotune:postLoad(), ConfigurationUtil.SELECTOR_MULTIOPTION)

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