xna orienation

Ruz

having a few problems exporting form 3dsmax to xna.

Although the character is oriented correctly in the xna window, when a forward motion is applied the character moves backwards.

I am exporting using fbx plugin from max. I have tried rotating the biped 180 degrees but it makes no diff.

Anyone used xna much could give me a few tips\?

fBX has two options, either 'z' up or 'y' up . I have exported using 'y' up as 'z' is only up in 3dsmax

I have a horrid feeling that xna is only recognising the bind pose and throwing out any rotation I

have made in max

cheers
Mike

Eric Chadwick

I found the XNA forum recently, someone might have answered this already over there.
http://forums.xna.com/forums/54.aspx

Ruz

yeah , people have some 3dsmax/fbx related probs, but not specifically what I am looking for.

I don't really want to use x at the stage, fbx is what I am used to.

Hopefully its not a painful workaround as want to keep the export process as simple as possible

Daaark

In XNA -Z goes into the screen and +Z comes out of the screen. It's right handed coordinates like OpenGL.

Ruz

thanks for the info Vampyre_Dark. we are trying to get a the basics of our game demo up and running.

Ruz

what a pain in the end . I suppose the ideal solution is rotating the character around the z axis in max 180 degrees.

problem is that xna only recognises the bind pose, so any biped rotations are ignored by xna.
My cheap hack was to group the biped with the mesh and rotate the group 180 degrees

This actually works, although its not very pretty. I also don't know how this will affect the bones in game.

could just do it in code in xna, but want to keep it as simple as possible

Eric Chadwick

This exporter might be an alternative.
http://kwxport.sourceforge.net/
Jon Watte is a pretty smart guy, and responsive to requests.

Ruz

I have that installed thanks Eric, but I had a problem on the xna side, got loads of errors when compiling the thing.

I will look at it again, because x format obviously will support fx shaders as well

EDIT

actually Eric I got it working. i had the biped flagged as 'non renderable' in max. it was that simple.

This bug has been fixed in the next version I believe