[lua] Which Side A Rail Vehicle Is Coupled To Consist

Is it possible to get the side of the coupling in a script?
For engines this information is vital..

 

Yes, this is possible.
I have used this code that was shared by NZTS SavV on the TS Modding Discord-server.

Code:

gSomethingCoupledAtRear = 0 -- Create Variable, Coupled pipes
gSomethingCoupledAtFront = 0
COUPLING_MSG = 10000 -- Whatever unique ID code you want to use can go here - most people seem to use 10000
SEND_FWD = 0 -- Set up variables _FWD and _BWD so they can be used in all SendConsistMessage Calls and for clarity on which direction the message is sending
SEND_BWD = 1


function CheckCouplings()

    gSomethingCoupledAtRear = (Call("SendConsistMessage", COUPLING_MSG, 0, SEND_BWD) == 1)  and 1 or 0
    -- Check for item connected to rear end of vehicle
    -- Sets gSomethingCoupledAtRear to 1 if Coupled at Rear, 0 if not coupled

    gSomethingCoupledAtFront = (Call("SendConsistMessage", COUPLING_MSG, 0, SEND_FWD) == 1) and 1 or 0
    -- Check for item connected to front end of vehicle  
    -- Sets gSomethingCoupledAtFront to 1 if Coupled at Front, 0 if not coupled
end -- CheckCouplings

gStartingLength = 0 -- Coupled pipes
gUpdateCouplers = 0 -- Coupled pipes
gStartingLengthPrev = 0 -- Coupled pipes

function UpdateConsistLength() -- Coupled pipes
    gStartingLength = Call("*:GetConsistLength")
    if gStartingLength ~= gStartingLengthPrev then
        gUpdateCouplers = 1
    else
        gUpdateCouplers = 0
    end
    gStartingLengthPrev = gStartingLength
end

Then in Update you must add this code:

Code:

UpdateConsistLength()

if gUpdateCouplers == 1 then
    CheckCouplings()
end

You do not want to send consist messages on every game tick, that is why it only check couplings if the consist lenght has changed.

 

Thank you very much! Very smart solution! I want to implement correct headlights control switch.

 

Can you please direct me to this discord server? Would like to join this community...

 

Can you try this invite link?
https://discord.gg/EVP9WBZH

 

Thank you, joined!