Giving ground vehicles more traction

[Swaffy]

1st question: Is it possible to give a ground vehicle such as a Jeep Willy or M10 Wolverine more ground traction?
2nd question: If it is possible, how can you do this? I would like to give my Willy 4x4 some better traction.

Also, there's another thing I want to ask about: How can I move the center of mass for the Willy? It is front-heavy, and I want to even out the weight and make its center of mass in the middle of the car.

[freddy]

i think you can make the willy four-wheeldrive by replacing the frontwheels

Code: Select all

ObjectTemplate.Grip c_PGFRollGrip

with

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ObjectTemplate.Grip c_PGFEngineGrip

[fo0k]

Sounds like you already have it 4x4.. so to get more grip you can mod the collision properties of the wheels.. 37 would be default material id for wheels but I have played with 92 and achieved better grip..

Try that and play around with other ids.. be interesting to know what works well

[freddy]

maybe i should read better before i post lol

anyway a plan b could be to create some extra invisible wheels and hook them up to the engine.

[fo0k]

The only way to really make the center of gravity where you want it is to move the actual model from within 3dmax. the centerofmass offset script never seemed to be effective for me.

[Swaffy]

[Stupid Post]

[Swaffy]

This is a bump of a year-old thread, but for a good reason: I want to keep the "clutter" down.

The only way to really make the center of gravity where you want it is to move the actual model from within 3dmax. the centerofmass offset script never seemed to be effective for me.

ObjectTemplate.centerOfMassOffset 0/0/0

Yeah, I tried it and the game keeps reading the coordinates wrong. One game, my car will fall forward form the CoM being in the front, then in the next game it will be flipping to its right side and flying outside of the map. So it seems to be a broken script.

so to get more grip you can mod the collision properties of the wheels.. 37 would be default material id for wheels but I have played with 92 and achieved better grip..

I'll check out that idea. I said I would about a year ago, but at that time I didn't even have 3DS Max on my laptop nor did I know how to use it.

Forgotten Hope has better grip; does anybody know how they did it?

[Senshi]

FH? What do you mean with traction? Offroad capability or "stability" (no bouncing tanks after shooting/stopping like in Vanilla)?

[Swaffy]

FH? What do you mean with traction? Offroad capability or "stability" (no bouncing tanks after shooting/stopping like in Vanilla)?

Grip. Sorry, I was referring to it having less "slideyness." I'd like to have vehicles that have more tire/track grip on the ground. Is it just a matter of changing the Coll IDs?

[Apache Thunder]

My Karts in my Mario kart mod had some traction issues. I solved it by increasing the resistance values for the ground materials (I did not change the friction settins. I did however increase the friction for the 37 material along with the ground material changes). This may affect all vehicles though and not just jeeps.

Example: (bf1942/game/materialManagerdefine.con)

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MaterialManager.material 3
MaterialManager.materialAttGroup 3
MaterialManager.materialDefGroup 3
MaterialManager.materialDamage 30
MaterialManager.materialFriction 0.8
MaterialManager.materialElasticity 0
rem MaterialManager.materialResistance 0.08
MaterialManager.materialResistance 1

rem Dry dirt
MaterialManager.material 4
MaterialManager.materialAttGroup 4
MaterialManager.materialDefGroup 4
MaterialManager.materialDamage 30
MaterialManager.materialFriction 1.0
MaterialManager.materialElasticity 0
MaterialManager.materialResistance 0.04

Also note this will result in the vehicle also traveling faster. Since the wheels slip less, the vehicle's engine is able to translate more of it's power to the ground resulting in faster speeds.

So for my Mario Kart mod at least, this allowed me to reduce traction for off road areas to slow down the karts while the main road would allow them greater traction and speed which allowed the mod to better replicate the driving physics of the real game.

Video comparison of the change in driving physics:

Before:

After:


Which I believe fo0k also suggested to me when I had this issue.