Hello,

I've been searching for ways to detect collisions and all I've found in the help files is the BoundingBox stuff. Boxes won't do!

How can I detect collisions for complex structures, such as game levels/landscapes?

Is there a "world" where all of my 3D objects already exist, so that I can scan it, instead of referencing each model with a variable or having to store it in a list?

Can I raycast models on a face to face basis, as opposed to just their bounding box/sphere/frustrum?

What is a bounding frustrum? (Wikipedia didn't help, and "help" hindered)

Better still, can I do real collisions?

I'm used to being able to choose from bounding sheres, convex hulls, or meshes.

Cheers,

James

P.S: Is anybody out there thinking of writing an "XNA Dictionary"? (XNA screams for a dictionary)

About the collision I had the same problem, and I ended up doing it my self. To do that you have do use a different content importer that tags the mesh vertex buffer. Because right now you don´t have access to it (with the upcoming update that will change), but any way, look in google tagged mesh verts, or something like that.

The frustrum is like a pyramid, and usually it represents the volume that the view occupies on space.

It's generally slow to just iterate through all models and then all faces to test intersection. You might want to consider creating a data structure for collision testing, maybe even in the content pipeline. I think there are examples for octree, quadtree and bsp on codeplex and lots of books on collision testing.

I find geometrictools.com to be a good resource of common game engine code.