Unknown forces affecting vehicle.

electronic-fox

Hi. I am fairly new to the CryEngine but I do have the basic fundementals down.

I am trying to bring a basic 4-wheel vehicle into the engine, following some tutorials telling me to edit the XML file of an existing vehicle. I have managed to do this just fine and the car is in the engine, however as soon as it hits the ground it does a crazy dance, almost like something is pushing up from its belly.

[ame="http://www.youtube.com/watch?v=wCTae6a9bws"]http://www.youtube.com/watch?v=wCTae6a9bws[/ame]

SlyRipper

Haven't tried vehicles, yet. But maybe the documents help a bit, could be you missed a setting or something is set up wrong? http://freesdk.crydev.net/display/SDKDOC2/Vehicle+Editor

electronic-fox

I've been through the documents so many times now. I just cant figure it out. I feel like im missing something stupidly obvious.

e-freak

can you share your setup? its hard to debug it just from a video

electronic-fox

Since this I have tried re-creating the vehicle from scratch using the empty vehicle as a starting point, completely via the vehicle editor (I assumed perhaps something in the XML of the vehicle I used as a base was doing this), but the same thing happens.

My export setup in Maya

Vehicle Editor setup in CE

JamesWild

Never worked with this, ever, but I've seen this sort of thing happen in other physics engines when the pivot points of bodies were incorrect. (such as say the wheels' pivot points being the same as the body in this case)

Also, ensure you haven't scaled any parts. I've seen Cryengine has some possible bugs with scaled physics objects, especially when non-uniform (not scaled the same along each axis) not used Maya in years but there should be a way to apply the scaling.

electronic-fox

I know the pivots of all the wheels and their colliders are centered, but Im not sure about the pivot of the main body part, Ill check this out after work today. My hope is that after figuring out the basics of this, I can work my way up to actually driving some of my creations rather than leaving them static.

electronic-fox

All scaling and translations have indeed been frozen, and all pivots are as they should be. I really am quite lost on this.

SlyRipper

Hey dude, it's been a while but I found this, maybe this can help you fixing the problem?

[ame="http://www.youtube.com/watch?v=4kLT61R8eTA&list=UU48M6o6CniSI1W4XIsjIPmw&index=60"]Creating a custom vehicle and script in Cryengine 3 SDK Part 1 - YouTube[/ame]

electronic-fox

Thats the tutorial I followed to do this, I've given up for now in favour of using UDK for this.