Export. Lua Multiplayer MainPanel error

[huertix]

I have troubles to use the export.lua file in multiplayer mode. This export.lua is to use the Android DCS Throttle Control I made.

 

http://forums.eagle.ru/showthread.php?t=145074

 

If I play standalone or if I am host in multiplayer, it works great.

 

please, Someone can help me??

 

The error:

00080.721 ERROR Lua::Config: Call error LuaExportAfterNextFrame:[string "C:\Users\huertix\Saved Games\DCS\Scripts\Export.lua"]:91: attempt to index local 'MainPanel' (a number value)

stack traceback:

[C]: ?

[string "C:\Users\huertix\Saved Games\DCS\Scripts\Export.lua"]:91: in function <[string "C:\Users\huertix\Saved Games\DCS\Scripts\Export.lua"]:88>.

[huertix]

The Export.lua:

 

local log_file = nil

local HOST_PORT = 14801  -- Choose your desire port where DCS is running
local ANDROID_PORT = 14800 -- Choose your desire port for android device


local HEAD_MSG = "THRDCS"
local count=0
local msgOut =""
local clientIP=""
local speed =""
local thr = 30;
local engineNow = thr;

local prevLuaExportStart = LuaExportStart


function LuaExportStart()

   
   if prevLuaExportStart then
       prevLuaExportStart()
   end

   log_file = io.open(lfs.writedir().."/Logs/Export.log", "w")
   

   package.path  = package.path..";"..lfs.currentdir().."/LuaSocket/?.lua"
     package.cpath = package.cpath..";"..lfs.currentdir().."/LuaSocket/?.dll"
    
    socket = require("socket")
    c = socket.udp()
   c:setsockname("*", HOST_PORT)
   c:setoption('broadcast', true)
   c:settimeout(0)
end



function LuaExportBeforeNextFrame()

   data, ip, port = c:receivefrom()

   if data then
       --log_file:write("---------------------------------------------------\n")
       --log_file:write("Received: ", data)
       --log_file:write("\n")
       clientIP = ip
 
       local dataArray = string.gmatch(data, '([^,]+)')

       if dataArray(0)==HEAD_MSG then
           thr = dataArray(1)
           --log_file:write("thr: ", thr)
           --log_file:write("\n")
           gear = dataArray(2)
           flaps = dataArray(3)
           brakeOff = dataArray(4)
           brakeOn = dataArray(5)

           if brakeOn == "1" then
               --log_file:write("brakeOn:  ")
               --log_file:write("\n")
               LoSetCommand(577)
           end 

           if brakeOff == "1" then
               --log_file:write("brakeOff:  ")
               --log_file:write("\n")
               LoSetCommand(578)
           end

           if brakeOn == "0" and brakeOff == "0" then
               LoSetCommand(579)
           end

           setGear(gear)

           setFlaps(flaps)
           
       end  
       checkBalance(thr,engineNow)      
   end
end



function LuaExportAfterNextFrame()

   local MainPanel = GetDevice(0)
   local engine_thr_left_now = MainPanel:get_argument_value(8) * 100
   local engine_thr_right_now = MainPanel:get_argument_value(9) * 100


   engineNow = math.floor((engine_thr_left_now + engine_thr_right_now) / 2)
   --log_file:write("engines: ", engineNow)
   --log_file:write("\n")

   gearNow =  math.floor(MainPanel:get_argument_value(716))
   --log_file:write("gearNow: ", gearNow)
   --log_file:write("\n")

   flapsNow =  math.floor(MainPanel:get_argument_value(653)*100)
   --log_file:write("flapsNow: ", flapsNow)
   --log_file:write("\n")

   speed = math.floor(MainPanel:get_argument_value(48)*100) -- Currently not is use
   --log_file:write("Speed: ", speed)
   --log_file:write("\n")


   msgOut = HEAD_MSG..","..engineNow..","..gearNow..","..flapsNow.." \n"
   c:sendto(msgOut, clientIP, ANDROID_PORT)
   log_file:write("MSG: ", msgOut)
   --log_file:write("\n")

   --log_file:write("IP: ", clientIP..":",ANDROID_PORT)
   --log_file:write("\n")
   
end


function checkBalance(remote,current)


   remote = tonumber(remote)
   current = tonumber(current)
   
   if math.abs( remote - current) < 2 then
       LoSetCommand(1034) -- stop 
       return 0
   end

   if remote < current then
       LoSetCommand(1033) -- decrease thrust
   elseif remote > current then
       LoSetCommand(1032) -- increase thrust

       
   end

end

function setGear(GearDown)
   
   if GearDown == "1" then
       LoSetCommand(431)
   
   else
       LoSetCommand(430)
   end
end


function setFlaps(flps)

   
   if flps == "0" then
       LoSetCommand(1047)
   elseif flps == "10" then
       LoSetCommand(1048)
   elseif flps == "20" then
       LoSetCommand(1049)
   end

end




function LuaExportStop()
  if log_file then
      log_file:write("Closing log file...")
      log_file:close()
      log_file = nil
  end

  --c:close
end

function LuaExportActivityNextEvent(t)
   local tNext = t

   tNext = tNext + 0.1

   return tNext
end

[FSFIan]

In multiplayer, there are times when you are not in any aircraft, so GetDevice(0) returns nil because there is no main panel. (This may also apply to FC3 aircraft, I am not sure about that.)

 

If LoGetSelfData() returns nil, there is no active aircraft. Otherwise, check LoGetSelfData()["Name"] to see if you are in an A-10C.

 

Here's the relevant part of the DCS-BIOS source code.

[huertix]

Thanks a lot Ian.. :) It works now and with your tip I can expand the app for other models as well.

 

If you are in Munich once, wir müssen ein mal groß Bier trinken. ;)