Binding help

Hi, I'm trying to create a lift system for my mod. What I want to do is set a value to a variable inside a .jbeam file by clicking on a key. I understant the input_actions.json and how to use .lua with hydro beams but I haven't figured out how, if it's possible to assign a variable like for example $rideheight_F with binding.
Thank you

 

Pretty sure in a folderpath of inputmaps/keyboards.json, you can define the hydro actions

and having a input_actions.json file in the mainfolder of the mod.

 

Thanks for your answer but it's not what I want to do, I don't want to define a hydro action but set a variable so I can change the precompressionRange value dynamically

 

Hey @yannis01186 , check this out : https://www.beamng.com/threads/a-variable-for-the-jbeam-files-but-defined-by-a-lua-file.70386/

I don't know which in-game action you're after but why would you want to make pre-crompression dynamical ? As far as I know the pre-compression value only takes action on spawning, it defines how much a beam is allowed to stretch or shrink while spawning. Next to that there is beamdamp and beamspring to adjust stretch or compression rates. Strength and damp can also be defined on hydros so what you want to do is actually use a hydro imo, since it's just a beam as long as you don't use your controller to shrink or extend it. Then, in lua, you can use a variable to make it move on certain arguments. The reaction time (inrate outrate) is limited though. Again, I don't know what it is you actually want to do, do you just want a lift to go up and down but stop on the way in between ? That would just be like the car lift and dumpster and etc ? Here below is the code from the T-Series' custom_input lua file. Pay attention to the dt arguments, dt (difference in time) in this case is applied for potentiometer-like action like car lift or dumpster.

Code:

-- This Source Code Form is subject to the terms of the bCDDL, v. 1.1.
-- If a copy of the bCDDL was not distributed with this
-- file, You can obtain one at http://beamng.com/bCDDL-1.1.txt

local M = {}

local function onReset()
  electrics.values['tilt'] = 0
  electrics.values['tilt_input'] = 0
  electrics.values['extend'] = 0
  electrics.values['extend_input'] = 0
end

local function updateGFX(dt) -- ms
  electrics.values['tilt'] = math.min(1, math.max(-0.0, (electrics.values['tilt'] + electrics.values['tilt_input'] * dt * 0.25)))
  electrics.values['extend'] = math.min(1, math.max(-0.0, (electrics.values['extend'] + electrics.values['extend_input'] * dt * 0.25)))
end

local function tiltBed(value)
  electrics.values.tilt_input = value
end

local function extendBed(value)
  electrics.values.extend_input = value
end

-- public interface
M.onInit    = onReset
M.onReset   = onReset
M.updateGFX = updateGFX
M.tiltBed = tiltBed
M.extendBed = extendBed

return M

By the way you can just put this file in your own mod and apply the 'tilt' and 'extend' values in your hydro settings as input source. That should get you started on a lift system.

 

Thanks a lot, I will try that. I don't know why but I thought that using an hydros would make the suspensions unstable or not like a normal beam. And now I know that we can't a variable in lua for a jbeam files. Thanks
--- Post updated ---
@NOCARGO
It work perfectly thanks
I made my own lua script but it's maybe a bit to fast now: (edit I just have to change inRate and outRate to 0.2)

Code:

-- This Source Code Form is subject to the terms of the bCDDL, v. 1.1.
-- If a copy of the bCDDL was not distributed with this
-- file, You can obtain one at http://beamng.com/bCDDL-1.1.txt

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

local liftClosed = 0
local liftNormal = 0.1

local  pressed = false

local function init()

end

local function setUpLift()
   if pressed == true then
       pressed = false
   else
       pressed = true
   end
end


local function updateGFX(dt)
    local lift = electrics.values.lift
   if pressed == true then
       lift = liftNormal
   else
       lift = liftClosed
   end
    electrics.values.lift = lift
end

M.updateGFX = updateGFX
M.setUpLift = setUpLift

return M

And in the jbeam file:

Code:

    ], 
    "hydros": [
            ["id1:","id2:"],
          {"beamDeform":20000,"beamStrength":200000},
          {"beamSpring":161000,"beamDamp":0},
          ["fh4r","fs1r", {"precompressionRange":0.045,
              "soundFile":"event:>Vehicle>Suspension>car_modn_med_01>spring_compress_01","colorFactor":0.4,"attackFactor":10,"volumeFactor":0.5,"maxStress":1700,"decayMode":1,"decayFactor":8,"pitchFactor":0.35,
             "inputSource":"lift","inLimit":0,"outLimit":2.1,"inRate":1,"outRate":1,"inputFactor":1.0}],
          ["fh4l","fs1l", {"precompressionRange":0.045,
              "soundFile":"event:>Vehicle>Suspension>car_modn_med_01>spring_compress_01","colorFactor":0.4,"attackFactor":10,"volumeFactor":0.5,"maxStress":1700,"decayMode":1,"decayFactor":8,"pitchFactor":0.35,         
             "inputSource":"lift","inLimit":0,"outLimit":2.1,"inRate":1,"outRate":1,"inputFactor":1.0}],         
    ],

 

Hey nice script

Too fast ? Well, hydros don't go as fast as I want them to go but they sure can go slow. Just change your inRate and or outRate, try
half the value for starters and see what happens. Example : "inputSource":"lift","inLimit":0,"outLimit":2.1,"inRate":0.5,"outRate":0.5,"inputFactor":1.0}],

 

Thanks, I just saw that on the wike as well and 0.2 is the right value
--- Post updated ---

 

Sure, thank you for inviting me But you're diverting from your own thread here so better to pm and or create a thread for it ?
Don't get me wrong, I wouldn't create a thread if I didn't want to though.

 

Welcome back @yannis01186!

 

Thanks, I really put a lot of work on my next mod and I hope everyone will enjoy it !

 

I noticed that you're asking about a lift system... your next mod wouldn't happen to be the 911, right? If so, that's epic

 

Friendly reminder that this is a programming thread. I'm not angry but I'm just saying

 

good luck on the lift