LUA Controller Config editing (If/Then)

[Afterburn]

*Edit: See third post for the most specific question that will answer my needs*

 

I have a GroovyGameGear GP-Wiz40. I'm trying to model the CMSP rotary switch (among other things). Problem is I'm out of inputs so I decided to try the ROTO-X technology they are advertising to eliminate one wire (3 inputs instead of 4 for the CMSP Mode switch).

 

See bottom paragraph for how roto-x works. I hope it's clear...

 

Now to the nitty-gritty. I want to increment the CMSP mode switch each time button "a" is pressed and decrement each time button "b" is pressed. So, I need something to the effect of this:

 

if(cmsp.mode == OFF and button.a == on) then

cmsp.mode = stby

end if

...

if(cmsp.mode == semi and button.a == on) then

cmsp.mode = auto

end if

....

if(cmsp.mode == man and button.b == on) then

cmsp.mode = stby

end if

 

 

etc. etc. Problem is I have no idea how to do this in the .lua file. :huh:

 

If anyone can help, it would be greatly appreciated!

 

Thanks,

Joe

 

FYI roto-x converts a rotary switch from individual contacts to a button pulse for either clockwise ore counterclockwise rotation of the rotary. It takes three inputs on the controller, and you wire your rotary switch in multiples of three to those three inputs (so for a 6-way rotary you wire K-M-O-K-M-O terminals on the board to 1-2-3-4-5-6 on the switch). These three inputs are used to determine the direction of rotation of the rotary switch, thus outputting one of two joystick presses through the USB (one press for each clockwise click of the rotary, and the other button for counterclockwise).

Edited September 13, 2011 by Afterburn

[Afterburn]

TL;DR: Is there a way to control a rotary knob like the CMSP mode knob with two momentary buttons?

 

Hope this simplifies my request :thumbup:

[Afterburn]

Just a slight bump with a slightly different question maybe someone can answer.

 

Is there a function in LUA to get the state of a control (on or off)?

 

This would allow me to complete what I'm trying to do.

[Speed]

There is no third party software that does this already? If not, my first gut reaction is that you need to edit your Config/Export/Export.lua file. Some programming examples are here:

 

http://www.digitalcombatsimulator.com/en/dev_journal/lua-export/

 

There may be better ways of doing this, but the way to do it that I can think of right off the bat would be something like this:

 

1) External app that sends commands to DCS over a socket

 

2) Modify the OnNextFrame (or however it's spelled) Lua function in Export to receive commands over the socket, and then execute the command in the jet.

 

High-level Pseudocode:

 

External app:

While dcs.exe is running do
{
  if switch incremented then
  {
       Until command received do
       {
            send switch incremented command string over socket
       }
  }

  if switch decremented then
  {
       Until command received do
       {
            send switch decremented command string over socket
       }
  }
}




In export Lua environment of DCS:

if Luasocket doesn't exist, load Luasocket

if it doesn't exist, create the Luasocket UDP socket for receiving command

[i]in the OnNextFrame function[/i]:

local command_table = {}
do until timeout is true:
{
    Receive data on socket, timeout of like, no more than 10 ms
    Insert commands into command_table
}

for i = 1 to size of command_table do
{
     if command_table[i] ==  command to increment switch
     {
           do set switch position command that increments switch
     }
     if command_table[i] ==  command to decrement switch
     {
           do set switch position command that decrements switch
     }
}

 

Anyway, that's pseudocode that kinda illustrates how I think this should be done. Keep in mind I don't know much about Luasocket, and I have never attempted to do anything like what you are wanting to do. But this is how I would first attempt to go about doing what you want to do. As far as editing code in export.lua, you might be better off doing this from the net environment and using the net.dostring_in function. Make yourself a separate file that loads last of all, and make it modify the OnNextFrame function... something like this works great, IIRC:

 

OnNextFrameOld = OnNextFrame

OnNextFrame = function ()

OnNextFrameOld()

--your code

end

 

As long as your mod is loaded last, your mod should not interfere with any other mod that might use OnNextFrame.

 

Oh and BTW, I'm not even sure the function is called "OnNextFrame", it's probably called something slightly different. Regardless, the point of OnNextFrame is it's a export environment function that is called on every simulation frame, so it's a great place to put code.

Edited September 13, 2011 by Speed

[ivanwfr]

Some other info that may help here:

• Olgerd's User files A-10C Cockpit arguments
  
• and this Speed's LUA thread post of mine about Exporting to TARGET socket attached solution (...that worked quite well before 1.1.0.9 patch ... )