How do make a GTA SA vehicle to work in BeamNG?

Now im trying to make a car mod for the first time and i wanted to choose a GTA SA vehicle, But there is one thing, How do you JBEAM them? Do you got to grab the col mesh or the chassis_vlo for the jbeam or just have the chassis_hi to jbeam?

I am trying to make my very first car mod for the first time.

 

you will have to make a jbeam completely from scratch, or make a copy and modify one of the vanilla vehicles, Jbeam systems work completely differently to GTA's Colmesh system.

As far as I know, GTA uses basically a set of cubes that don't change shape, to define when the car should "hit" something.
But beamNG uses the "nodes & beams" system, where each little part of the car has its own structure made up of corner points or "Nodes" which can hit stuff.
They are connected together by "beams" which can be stretched and squashed when you push them hard enough, and they are what allow the cars to crumple, bend, and crash.

If you open up BeamNG, pick a car, then press ctrl+B, all the green lines that come up are the beams. mess around with that for a bit, and you'll figure out how the basic system works.

To summarise modding in a GTA car, you would have to:
-find a way to convert the visual mesh to a ".DAE" format, so beamNG can understand it,
-then, make a jbeam structure that matches the car, by typing in co-ordinates for nodes, then making beams that go from one node to another.
you can see how these are written, as an example, by going in your computer's files to
C:\Program Files (x86)\Steam\steamapps\common\BeamNG.drive\content\vehicles\
then open a car's .ZIP file, then open one of the .jbeam files.

If you want more help, and you have a discord account, you can join the "modding for dummies" discord group here:
https://discord.gg/5NK3mNyC

 

OK, I know what do to, Now the same for GTA V and GTA IV and others?

I got DragonDFF to import the SA models.

 

yes, you'd use pretty much the same system for that

 

Alright, Tomorrow I will try and get this out tomorrow.

 

You can start tomorrow but you won't finish it in a day that's for sure
You're better off either taking a vanilla car's jbeam and modifying it to fit the shape or modyfing the 3D model of a vanilla car to make it resemble more the GTA car.

 

I guess I would grab a official car and get the model of a gta and edit the jbeam to fit it.

 

Yes, make sure you take very similar cars, for example the legran and the gta wagon, that way you will have to edit the jbeam less. Maybe you could even only change the bumper and fascias for better results and less work

 

Alright, Now if I use the colmesh or chassis_vlo or the high poly.

Which one is better to jbeam?

 

The high poly mesh would be the only thing you need

 

Like this?

This is the Buffalo and let's say I want to convert this in BeamNG and the thing I either want to jbeam is the high poly.

Now if I want to use a official car to use for a scratch made JBEAM, Which one should be perfect for the Buffalo?

 

The San Andreas buffalo would be perfect for a soliad Wendover JBEAM.