Well, my problem isn't that. I will probably use flat terrain. My problem are collisions, because I don't know how to do OBB collisions, and AABB are sometimes inaccurate... Also, there's collision reaction etc... That's why I need a physics engine :)

He needs collision detection with complex terrain! Well, I guess you could use Newton, like I am trying now, but it has no samples for XNA that demonstrate how to use it properly :(

Thanks Walaber, didn't know about the auto freezing thing. I saw on your site the stunt playground, it's awesome! Also is your JelloCar :) But the thing that is bothering me now are vehicle physics... Let's say I have 4 wheels, and a car body, seperate models. I have an idea to connect the body with the wheels by joints, but don't know how to do ...

There's AddBodyImpulse and it works! Although it flips my cube when I try to apply the impulse to the left or right, forward or backward... Maybe it's because the friction with the floor... I'll need to model a simple tire and try it. Thanks btw :)EDIT: no, without gravity it still want's to flip the cube...

Copy/Paste from ziggyware1st post: You probably know about the newton wrapper for XNA. Well, I've done some experiments, and found (a bug maybe) something very odd. When I set a callback to OnApplyForceAndTorque, and in that method I add something like body.SetForce(new NVector3(0, -9.81, 0)); it works. However, if I add the same line anywhere ...

I need help with making a FPS camera. I made one with the tutorial that comes with XNA, but now I need to know how to position the weapon so it's in front of the camera.Anyone?

You could also do this spriteBatch.Begin(SpriteBlendMode.AlphaBlend, SpriteSortMode.Immediate, SaveStateMode.SaveState) It will save the state and when you call spriteBatch.End() it will restore it!  

Thanks! My near clip was 0.0001f :)

I experimented a little with the skinning sample I've downloaded and I've managed to add it into my own engine. I had several problems like the content processor was attaching the shader while processing the model but I've managed to deal with it. My problem is this. See this picture....  You see the problem. Now, see the good ...

I'm working on a 3d mini-game for a programming challenge. The game is called Good vs. Evil where you can choose sides and fight with the opponent. Models are pacman's - an angel and a devil! Shooting each other, collecting power-ups that fall from the sky, getting into the Rage mode and Slow-motion :) That's about it! Next, I'll ...