Solved Trouble with LUA

I'm working on a lua mod (code at bottom of post) that makes the horn have chance of getting stuck 'on' and blaring until you reset the car during a crash, simulating the twisting and bending of the metal frame grounding out the horn wires like what sometimes happens in real crashes. But I'm not sure how to code it so that it regenerates a random number without having resetting the whole vehicle lua. In other words, when I press "R" to reset the car, I want to generate a different random number without having to use "Ctrl+R" to re-run the whole code.

Also, right now, if the horn gets triggered in the crash, if you press the horn button, it will shut the horn off. How do I make it so that the horn stays on until you reset the car, no matter if you use the horn button? Perhaps some code that detects when the horn is off? I've tried

Code:

if electrics.horn == false then electrics.horn(true)

but that didn't work. I've also tried some while loops, but those made the game hang.. Either that, or if there's a way to "ignore" the horn button input until reset, that would work too. Any help is much appreciated.

I started with the postCrashBrake file and modified it to what I need. Right now it has a 1 in 3 chance of setting off the horn in a frontal crash, eventually I will change it to 1/20 chance when everything is working right:

Code:

local M = {}
M.type = "auxilliary"
M.relevantDevice = nil

local max = math.max
local state = "idle"
local hornThreshold = 0
local chance = math.random(3)

local function updateGFX(dt)

  if state == "idle" then
    if (max(sensors.gy) > hornThreshold) and chance == 1 then
      electrics.horn(true)
      state = "honking"
     
    end
   
   
  end
end

local function init(data)
  --if the horn is still active from before reset, deactivate it
  if state == "honking" then
    electrics.horn(false)
  end

  state = "idle"
  hornThreshold = 30
 
  end

M.init = init
M.updateGFX = updateGFX

return M

 

I tried that, doesn't seem to work, no matter where I put the code. Unless I'm doing something wrong?:

Code:

local M = {}
M.type = "auxilliary"
M.relevantDevice = nil

local max = math.max
local state = "idle"
local hornThreshold = 0
local chance = math.random(3)

local function onReset()
 math.random(3)
  end

local function updateGFX(dt)

  if state == "idle" then
    if (max(sensors.gy) > hornThreshold) and chance == 1 then
      electrics.horn(true)
      state = "honking"
         
    end
 
  end
end

local function init(data)
  --if the horn is still active from before reset, deactivate it
  if state == "honking" then
    electrics.horn(false)
  end

  state = "idle"
  hornThreshold = 30
 
  end
 
M.init = init
M.updateGFX = updateGFX
M.onReset  = onReset

return M

 

Thank you! That should solve half my problem. And which lua folder exactly are you putting it in? Because before, I would just replace the original postCrashBrake file with my file just to test it.

 

Maybe you could add custom control for the horn and disable horn input? I don't know if it is possible to override default bindings though.

 

It works great, just tested it out. And unfortunately putting it in the common folder doesn't work, so using it for all cars is another thing I have to figure out. Worst case scenario, I'll just have to put that 1 file in every vehicle folder.

Yeah if I could have lua override the horn control after the crash that would work, just not sure how I would do that

 

Cutscenes and slowmotion in campaign disable some of the keys, maybe there could be possible to find a way.

Or maybe it is possible to define binding for the horn which would then overwrite default binding, but that might make mod invalid for the repo.

 

Interesting.. I just looked through all the campaign lua files plus some others, and couldn't find anything relating to disabling key inputs, but I'll keep looking.. And yeah, overwriting a default binding probably wouldn't be allowed for the repo

 

Thanks @thomatoes50. I got it to work by monitoring electrics.values.horn. There is a small blip in the horn if you press the horn control, but it's probably as good as it's going to get. And to use a controller for all the cars, I would need to make a jbeam addon for every car correct? What's the advantage of making a jbeam addon for every car vs a lua addon for every car?

Code:

local M = {}

local hornThreshold = 30
local chance = math.random(3)
local state = "idle"

local function updateGFX(dt)
if state == "idle" then
   if sensors.gy > hornThreshold and chance == 1 then
   electrics.horn(true)
   state = "honking"  
   end
 
   elseif state == "honking" and electrics.values.horn == 0 then
   electrics.horn(true)
   end
 
end

local function onInit()
    state = "idle"
    electrics.horn(false)
    chance = math.random(3)
    hornThreshold = 30
end

local function onReset()
    state = "idle"
    electrics.horn(false)
    chance = math.random(3)
end

M.onInit = onInit
M.onReset  = onReset
M.updateGFX = updateGFX

return M

 

I'm having some trouble making the module as I've never dealt with them before (not as fluent in lua as I should be).. my code is probably totally wrong, or I'm missing something, not sure what. Below is the module I attempted to create and I'll also attach the error I got.

Code:

postCrashHorn = require("postCrashHorn")
postCrashHorn.updateGFX(dt)
postCrashHorn.onInit()
postCrashHorn.onReset()

 

It works now, thanks!