WIP (using GTA V model now) BMW i8 in development

CrashHavenBNG · Aug 31, 2025 at 4:42 PM

IHateFrix said: ↑

but pls i am new look my creation of my account

also i dont want very bad days in the website because i created the acount some weeks ago and there are not intentions to delete it ok also this mod will be great ok
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ok
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but gabry reset your page and now have a different title here

but Gabry wich one can i chose because i didnt have a problem with my PC
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but guys i am not a very good modder because the jbeam and other things maybe will be hard and maybe release date is unknown because with no help the mod will be released in 2099 so maybe can collab me?
Click to expand...

I would collab but hybrid systems are very complicated

Comander18 · Aug 31, 2025 at 6:03 PM

Deleted

CrashHavenBNG · Aug 31, 2025 at 6:17 PM

Comander18 said: ↑

--[[--------------------------------------------------------------------
hybrid_i8.lua
Simple parallel-through-the-road hybrid controller:
- Front axle: electric motor
- Rear axle: ICE + gearbox
- Modes: EV (motor only), HYBRID (blend), SPORT (ICE priority)
- Auto engine start/stop, SOC window, regen on brake

Drop this in: <your_mod>/lua/controller/hybrid_i8.lua
----------------------------------------------------------------------]]

local M = {}

-- ==== TUNABLES ======================================================
local SOC_TARGET = 0.55 -- desired cruising SOC
local SOC_MIN_EV = 0.25 -- below this, force-charge w/ ICE in HYBRID
local SOC_MAX = 0.90 -- stop regen above this
local SOC_MIN_HARD = 0.10 -- always protect battery
local EV_MAX_SPEED = 110/3.6 -- ~110 km/h EV cap
local EV_MAX_TORQUE = 300 -- Nm cap in EV to keep temps sane
local BLEND_RATE = 6.0 -- (0..10) how fast we shift torque split
local REGEN_MAX = 25e3 -- W (25 kW)
local REGEN_BRAKECUT = 0.15 -- % of brake pedal before blending to friction
local ICE_MIN_ON_TQ = 120 -- Nm threshold to wake ICE in HYBRID
local ICE_IDLE_RPM = 1100
local SPORT_RPM_HOLD = 3500
local CREEP_WHEEL_TQ = 30 -- gentle EV crawl in D with tiny pedal
local SOC_TO_WATTHR = nil -- set at init from battery device

-- ==== STATE =========================================================
local devices = {
motor = nil, -- electric motor device (front)
engine = nil, -- ICE device (rear)
battery = nil, -- main HV battery
gearbox = nil -- rear gearbox (optional, for RPM hinting)
}

local mode = "HYBRID" -- "EV" | "HYBRID" | "SPORT"
local split = 0.5 -- 0..1 fraction to electric (smoothed)
local last_dt = 0.01

local function sign(x) return x >= 0 and 1 or -1 end
local function clamp(x, a, b) return math.min(math.max(x, a), b) end
local function lerp(a, b, t) return a + (b - a) * t end

-- ==== HELPERS =======================================================
local function vehSpeed()
return electrics.values.wheelspeed or 0
end

local function ped()
-- normalized accelerator 0..1
return clamp(electrics.values.throttle or 0, 0, 1)
end

local function brk()
return clamp(electrics.values.brake or 0, 0, 1)
end

local function soc()
-- battery.soc is 0..1 (BeamNG battery device)
return devices.battery and (devices.battery.soc or 0.5) or 0.5
end

local function setEngineOn(on)
if not devices.engine then return end
if on then
powertrain.setDeviceIsActive(devices.engine, true)
devices.engine:enableIgnition(true)
devices.engine:requestThrottle(0) -- will be commanded later
else
devices.engine:requestThrottle(0)
devices.engine:enableIgnition(false)
powertrain.setDeviceIsActive(devices.engine, false)
end
end

local function wantEngineOn(targetWheelTorque)
if mode == "SPORT" then return true end
local s = soc()
if mode == "EV" then
-- only allow ICE for safety/over-speed
if s <= SOC_MIN_HARD then return true end
if vehSpeed() > EV_MAX_SPEED * 1.05 then return true end
return false
end
-- HYBRID:
if s <= SOC_MIN_HARD then return true end
if s < SOC_MIN_EV then
return true -- charge sustaining
end
if targetWheelTorque > ICE_MIN_ON_TQ then
return true
end
return false
end

local function calcSplit(targetWheelTorque)
local s = soc()
local v = vehSpeed()

if mode == "EV" then
return (v <= EV_MAX_SPEED) and 1.0 or 0.0
end

if mode == "SPORT" then
-- ICE heavy; battery assists
local sportAssist = clamp(0.3 + 0.4 * (1 - s), 0.1, 0.7)
return sportAssist
end

-- HYBRID: aim to hold SOC_TARGET, raise electric fraction when above target
local socDelta = s - SOC_TARGET
local base = clamp(0.5 + socDelta * 1.2, 0.2, 0.9)

-- reduce EV portion at high speed
local speedFactor = clamp(1.0 - (v / (160/3.6))^1.2, 0.3, 1.0)

-- if we’re torque-hungry, lean on ICE more
local loadFactor = clamp(1.0 - (targetWheelTorque / 400), 0.2, 1.0)

return clamp(base * speedFactor * loadFactor, 0.1, 0.9)
end

local function commandMotorTorque(requestNm)
if not devices.motor then return end
-- Motor torque request; BeamNG electricMotor has :requestTorque(Nm)
devices.motor:requestTorque(requestNm)
end

local function commandEngineTorque(requestNm)
if not devices.engine then return end
-- Convert wheel Nm request to engine throttle heuristic
-- We simply request a throttle 0..1
local throttle = clamp(requestNm / 300, 0, 1)
devices.engine:requestThrottle(throttle)
end

local function applyRegen()
if not (devices.motor and devices.battery) then return 0 end
local brake = brk()
if brake <= 0 then return 0 end
if soc() >= SOC_MAX then return 0 end
local v = vehSpeed()
local power = clamp(brake * (REGEN_MAX / REGEN_BRAKECUT), 0, REGEN_MAX)
local wheelOmega = math.max(1.0, v / (0.33)) -- crude wheel omega based on ~0.66m tire dia
local regenNm = clamp(power / wheelOmega, 0, 2000)
devices.motor:requestRegenTorque(regenNm)
-- return equivalent negative torque to blend friction brakes if needed
return regenNm
end

-- ==== LIFECYCLE =====================================================
local function onInit()
-- discover devices by tags/names from JBeam
local all = powertrain.getDevices()
for _, d in ipairs(all) do
if d.type == "electricMotor" and (d.name == "frontEMotor" or (d.tags and d.tags.eAxle)) then
devices.motor = d
elseif d.type == "combustionEngine" and (d.name == "rearEngine" or (d.tags and d.tags.ICE)) then
devices.engine = d
elseif d.type == "battery" and (d.name == "HV_Battery" or (d.tags and d.tags.HV)) then
devices.battery = d
elseif d.type == "gearbox" and (d.name == "rearGearbox") then
devices.gearbox = d
end
end

if devices.battery and devices.battery.storageWh then
SOC_TO_WATTHR = devices.battery.storageWh
end

setEngineOn(false)
log("I","hybrid_i8","Hybrid controller initialized (mode="..mode..")")
end

-- Keybind handler – optional, expose via electrics to bind in UI
local function onUIRequest(data)
if data and data.toggleHybridMode then
if mode == "EV" then mode = "HYBRID"
elseif mode == "HYBRID" then mode = "SPORT"
else mode = "EV" end
guihooks.message("Hybrid Mode: "..mode, 2)
end
end

local function updateGFX(dt)
last_dt = dt

local acc = ped()
local v = vehSpeed()

-- Crawl in EV when creeping
if mode ~= "SPORT" and acc > 0 and acc < 0.06 and v < 2/3.6 then
commandMotorTorque(CREEP_WHEEL_TQ)
setEngineOn(false)
-- small creep uses little power; skip deeper logic
electrics.values.hybridMode = mode
electrics.values.hybridSplit = split
return
end

-- Driver torque request at wheels (very rough)
local targetWheelNm = acc * 600 -- tune overall “powerfulness”

-- Regen on brake: request negative torque first
local regenNm = 0
if brk() > 0 then
regenNm = applyRegen()
else
if devices.motor and devices.motor.requestRegenTorque then
devices.motor:requestRegenTorque(0)
end
end

-- Decide if ICE should be on
local engineNeeded = wantEngineOn(targetWheelNm)
setEngineOn(engineNeeded)

-- Compute desired torque split
local desiredSplit = calcSplit(targetWheelNm)
split = lerp(split, desiredSplit, clamp(BLEND_RATE * dt, 0, 1))

-- Cap EV in EV mode (speed & torque)
local evCap = 1.0
if mode == "EV" then
if v > EV_MAX_SPEED then evCap = 0.0 end
if targetWheelNm > EV_MAX_TORQUE then
targetWheelNm = EV_MAX_TORQUE
end
end

-- Allocate torque
local evNm = targetWheelNm * split * evCap
local iceNm = targetWheelNm * (1.0 - split)

-- If engine is off, give all to motor
if not engineNeeded then
iceNm = 0
evNm = targetWheelNm
end

-- Command devices
commandMotorTorque(evNm)
commandEngineTorque(iceNm)

-- SPORT RPM hold (simple)
if mode == "SPORT" and devices.engine and devices.gearbox then
if (devices.engine.outputRPM or 0) < SPORT_RPM_HOLD then
devices.engine:requestThrottle( clamp( (SPORT_RPM_HOLD - (devices.engine.outputRPM or 0))/SPORT_RPM_HOLD, 0.3, 0.9) )
end
end

-- Set some electrics for UI/HUD
electrics.values.hybridMode = mode
electrics.values.hybridSplit = split
electrics.values.hybridSOCTarget = SOC_TARGET
end

-- Optional: expose bindings via electrics
local function onReset()
split = 0.5
setEngineOn(false)
end

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

return M
Heres the hybrid script already have it
Click to expand...

God damn you should collab with this guy

elimiel2 · Aug 31, 2025 at 6:58 PM

.
--- Post updated ---

CrashHavenBNG said: ↑

God damn you should collab with this guy
Click to expand...

Maybe it's Chatgpt generated

IHateFrix · Sep 1, 2025 at 1:05 AM

CrashHavenBNG said: ↑

I would collab but hybrid systems are very complicated
Click to expand...

ok but next how i can put the blend file here to collab?
--- Post updated ---

elimiel2 said: ↑

.
--- Post updated ---

Maybe it's Chatgpt generated
Click to expand...

?
--- Post updated ---
also guys idk how i put the blender file because i still new of that think ok
--- Post updated ---
but also how i put the car from this site into the blender because in the thread title says using GTA V model now but the files of that i8s are rar and how i can put it
--- Post updated ---
https://es.gta5-mods.com/vehicles/bmw-i8-liberty-walk-roadster/download/106701

SupraTech · Sep 1, 2025 at 12:55 PM

Hi It’s always great to see new people interested in modding BeamNG. The BMW i8 is definitely a cool idea, but to be honest, making a fully working i8 from scratch is very advanced. You need to know about JBeam, 3D modeling, textures, materials, powertrain setup, optimization and more. I personally learned all of this the hard way, and it took a lot of time, patience and trial and error.

But don’t worry, everyone starts somewhere. A great first step is doing something simple like a rebadge, working on skins/liveries, or experimenting with private meshslaps just to practice. These may sound basic, but they really help you understand how BeamNG works and give you the foundation to make bigger projects in the future.

So once again, take your time, ask questions when you need to, and most importantly, have fun while learning. If you keep practicing, one day you’ll have the skills to make something as advanced as the i8.

IHateFrix · Sep 1, 2025 at 8:51 PM

but also how i put the car from this site into the blender because in the thread title says using GTA V model now but the files of that i8s are rar and ho

SupraTech said: ↑

Hi It’s always great to see new people interested in modding BeamNG. The BMW i8 is definitely a cool idea, but to be honest, making a fully working i8 from scratch is very advanced. You need to know about JBeam, 3D modeling, textures, materials, powertrain setup, optimization and more. I personally learned all of this the hard way, and it took a lot of time, patience and trial and error.

But don’t worry, everyone starts somewhere. A great first step is doing something simple like a rebadge, working on skins/liveries, or experimenting with private meshslaps just to practice. These may sound basic, but they really help you understand how BeamNG works and give you the foundation to make bigger projects in the future.

So once again, take your time, ask questions when you need to, and most importantly, have fun while learning. If you keep practicing, one day you’ll have the skills to make something as advanced as the i8.
Click to expand...

i know @SupraTech but making a scratch version of my mod maybe will be hard as well i need to work on the mod and next add texture jbeam and more the AI could help me ok

SupraTech · Sep 1, 2025 at 8:54 PM

IHateFrix said: ↑

but also how i put the car from this site into the blender because in the thread title says using GTA V model now but the files of that i8s are rar and ho

i know @SupraTech but making a scratch version of my mod maybe will be hard as well i need to work on the mod and next add texture jbeam and more the AI could help me ok
Click to expand...

ai is horrible in making beamng stuff.. Just saying dont start too big, start with small projects and then gradually increase detail and start learning stuff and doing them. I learned the hard way (with my ETK Hf series...)

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