How do i make a mod that adds 4WD to non 4WD vehicle?

I specifically talking about the Sunburst and Bastion

 

https://www.beamng.com/resources/ve...e-and-other-values-edit-works-for-mods.14868/

Make sure to read the transmission swap paragraph

 

Why though? They both already have a AWD option.

Paging @default0.0player

 

4WD and AWD are different things

 

Mod available https://www.beamng.com/resources/awd-pack-for-rwd-vehicles.20002/

 

AWD is different than 4WD

 

If a vehicle has 4 wheels, AWD is 4WD

 

no

 

Tipycally AWD is the kind you'd see in a sunburst, with a center differential and varying power beetween the front and rear wheels, while 4WD is the kind you'd see on a D-series, with only 2 modes : 50:50 4WD or RWD by decoupling the front transfer case.

 

Do you still believe that the 4WD in the D-Series is 50:50 when engaged? Open up the Powertrain Visualization app and see it yourself.

 

As i said typically (spelled wrong tho).

 

Well the Ibishu Pessima GTz has a "4WD" badge on its trunk.

Anyway back on topic
In the example of Sunburst, open the "\BeamNG.drive\content\vehicles\sunburst.zip\vehicles\sunburst\sunburst_trunk.jbeam"and disable the center differential. Scroll to the between AWD and AWD RS and add this(don't forget to make a file backup beforehand)

Code:

"sunburst_transfer_case_4WD": {
    "information":{
        "authors":"BeamNG",
        "name":"4WD Transfer Case",
        "value":1600,
    },
    "slotType" : "sunburst_transfer_case",
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        //locked center diff
        ["differential", "transfercase", "gearbox", 1, {"diffType":"locked", "lockTorque":8000, "friction":0.44, "dynamicFriction":0.00048, "torqueLossCoef":0.012, "uiName":"Transfer Case", "defaultVirtualInertia":0.1}],
    ],
},

Unlike the D-Series, the driveshaft is located in a different file"\BeamNG.drive\content\vehicles\sunburst.zip\vehicles\sunburst\sunburst_transaxle.jbeam"

Code:

"sunburst_driveshaft_4WD": {
    "information":{
        "authors":"BeamNG",
        "name":"4WD Rear Driveshaft",
        "value":400,
    },
    "slotType" : "sunburst_driveshaft",
    "controller": [
        ["fileName"],
        ["4wd", {"shaftName":"driveshaft"}],
    ],
    "powertrain" : [
        ["type", "name", "inputName", "inputIndex"],
        ["torsionReactor", "torsionReactorR", "transfercase", 1, {}],
        //disconnecting front shaft
        ["shaft", "driveshaft", "torsionReactorR", 1, {"breakTriggerBeam":"driveshaft", "uiName":"Rear Driveshaft", "electricsName":"driveshaft","canDisconnect":true, "friction":0.26, "dynamicFriction": 0.00051}],
    ],
    "torsionReactorR": {
        "torqueReactionNodes:":["e2l","e2r","e3r"],
    },
    "props": [
        ["func"      , "mesh"           , "idRef:", "idX:", "idY:", "baseRotation"        , "rotation"            , "translation"        , "min", "max", "offset", "multiplier",],
        ["driveshaft", "sunburst_driveshaft", "f3r", "f3l", "f8r",    {"x":0, "y":0, "z":0}, {"x":0, "y":1, "z":0} , {"x":0, "y":0, "z":0}, -360, 360, 0, 1,{"breakGroup":"driveshaft","deformGroup":"driveshaft","optional":true}],
    ],
    "beams": [
          ["id1:", "id2:"],
          //driveshaft
          {"beamPrecompression":1, "beamType":"|BOUNDED", "beamLongBound":0.02, "beamShortBound":0.02},
          {"beamSpring":0,"beamDamp":0,"beamDeform":1500,"beamStrength":3500},
          {"beamLimitSpring":10001000,"beamLimitDamp":250},
          ["rdiff","tra1", {"name":"driveshaft","optional":true,"breakGroup":"driveshaft","deformGroup":"driveshaft"}],
          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
    ],
},

 

I found a mod for it but thx