Adding an engine

I am trying to add an engine and have the following code and result (image below).

Main jbeam file:

Code:

    "slots": [
        ["type", "default", "description"]
        ["beamng_engine","beamng_engine","Example Car Engine"],
    ],

Engine jbeam file:

Code:

{
"beamng_engine": {
    "information":{
        "authors":"DrowsSam",
        "name":"Example Car Engine",
    }
    "slotType" : "beamng_engine",
    "scalebeamSpring":1,
    "scalebeamDamp":1,
    "scalebeamDeform":1,
    "scalebeamStrength":1,
    "slots": [
        ["type", "default", "description"]
        ["beamng_transmission","beamng_transmission", "Example Car Transmission"],
    ],
    "flexbodies": [
         ["mesh", "[group]:", "nonFlexMaterials"],

    ],
    "props": [
        ["func"      , "mesh"              , "idRef:", "idX:", "idY:"            , "baseRotation"        , "rotation"                 , "translation"        , "min", "max", "offset", "multiplier"]

     ],
    "enginetorque":[
        ["rpm", "torque"]
        [0, 0],
        [500, 60],
        [1000, 73],
        [2000, 93],
        [3000, 115],
        [4000, 132],
        [4500, 134],
        [5000, 135],
        [6000, 134],
        [7000, 114],
        [7500, 90],
    ],
    "engine":{
        "idleRPM":1000, //Idling RPM
        "shiftDownRPM":3400, //Downshift, for automatic
        "shiftUpRPM":6400, //Upshift, for automatic
        "maxRPM":7500, //Maximum RPM for the engine (redline)
        "inertia":0.08,
        "friction":16,
        "brakingCoefRPS":0.15
        "burnEfficiency":0.5
        "throttleSensitivity":1.2
        },
    "nodes": [
         ["id", "posX", "posY", "posZ"],

         {"group":""},
        
    ],
    
    "beams": [
          ["id1:", "id2:"],
          {"beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
                    
          {"beamSpring":4001000,"beamDamp":150},
          {"beamDeform":1500000,"beamStrength":"FLT_MAX"},

          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
    ],
    "triangles": [
            ["id1:","id2:","id3:"],
    ],
}
"beamng_transmission": {
    "information":{
        "authors":"DrowsSam",
        "name":"Example Car Transmission",
    }
    "slotType" : "beamng_transmission",
    "scalebeamSpring":1,
    "scalebeamDamp":1,
    "scalebeamDeform":1,
    "scalebeamStrength":1,
    "flexbodies": [
         ["mesh", "[group]:", "nonFlexMaterials"],


    ],
    "engine":{
        "transmissionType":"manual", //Automatic or manual; the automatic setting will restrict the use of manual mode while playing
        "lowShiftDownRPM":1400,
        "lowShiftUpRPM":3600,
        "highShiftDownRPM":3300,
        "highShiftUpRPM":6000,
        // -1, 0 (neutral), 1, etc
        "gears":[-2.9, 0, 26.5, 13.25, 8.82, 6.625] //Gear ratios
        "clutchDuration":0.25
        "viscousCoupling":3.5
        "lockingTorqueLimit":150
        "enableLocking":true
        },
    "nodes": [
         ["id", "posX", "posY", "posZ"],     
    ],
    
    "beams": [
          ["id1:", "id2:"],
          {"beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
                    
          {"beamSpring":4001000,"beamDamp":150},
          {"beamDeform":1500000,"beamStrength":"FLT_MAX"},

          {"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
    ],
    "triangles": [
            ["id1:","id2:","id3:"],
    ],
}
}

This was copied from an existing vehicle and the result I get is below image and no forward or reverse movement and a missing start button.

Any help greatly appreciated.

 

that's a very outdated jbeam

 

Your going to need a torque curve for it to work

 

Like already mencioned, this jbeam is really old and it probably only run on compatibily mode if at all. I recomend you to copy-pase the covet or the pigeon from the game files and disect It carefully. Reverse engineering the devs work is a really good way to learn how things work, since many parts of the wiki are obsolete (The last time I cheked it, I may be wrong) or undocumented.

 

Agreed, that Jbeam is very very old, and probably won't work at all. The wiki documentation on engines and drivetrains is more or less accurate though, I updated it myself about 6 months ago. Try copying the engine from a car in game, and then use the wiki as reference.

 

Thanks for the reply. Copied several engines over but still doesn't rev or move. I have an engine, transmission, chassis and wheels (I even tried an electric motor). Do I need a driveshaft? I searched google and the wiki but cannot find any manuals or workflows for adding a drivetrain. Do you have a link?

 

What does the console (`) say? Usually it'll tell you what's wrong.

 

Thanks for the reply. What do you mean by "console" ?

 

Did you code de controller?

Code:

    "controller": [
        ["fileName"],
        ["vehicleController", {}],
    ],

If it doesn't do nothing either you have a sintax error (The debug console will say "what" and most importantly were) or your vehicle doesn't have controler (I think, its just a guest)