I have a CubeChunk class which creates indices and vertices for each "Cube" in my chunk. What I want to do is create a bounding box for each of these cubes, so what I'm wondering is what is the best way to do this? Should I create a separate list for each chunk and store the bounding boxes in that? Or should I call a CreateBoundingBox method each time the cube is created or drawn?

For Example

for (int x = 0; x < 50; x++)
            {
                for (int z = 0; z < 50; z++)
                {
                    for (int y = 0; y <= map[x, z]; y++)
                    {

                        if (y >= 1)
                        {
                            SetUpIndicesAndVertices(x, map[x, z] - y, z, vertices, indices);
                            cubes.Add(new Cube.Stone(device, new Vector3(x, map[x, z] - y, z), stone));
                              CreateBoundingBox(some kind of vector3 values here);
                        }

                        else
                        {
                            SetUpIndicesAndVertices(x, map[x, z] - y, z, vertices, indices);
                            cubes.Add(new Cube.Grass(device, new Vector3(x, map[x, z] - y, z), grass));
                              CreateBoundingBox(some kind of vector3 values here);
                        }
                    }
                }

Or I could replace the line with cubeBB.Add(new BoundingBox(some vector3 crap here). Which one would make more sense to use?

To test collision between mouse and cube, or player and cube. I didn't know I could just use the cube as its own bounding box though. How would I do that?

So what you're saying is to create the BoundingBox of the cube at the point of intersection with the mouse or player? I guess that could work. It would save a lot of unnecessary bounding boxes in the memory. Although I didn't think c# had an issue with things hanging around in memory but who knows :P

What I was thinking is that I could have something like this:

x, x, x, x, x,

x, x, x, x, x,

x, x, o, x, x,

x, x, x, x, x,

x, x, x, x, x,

Where the x's are equal to 2 cubes and 0 is the player. The 5x5 space would be like a bounding box for the player which moves with the player and allows the player to only mine or build within that 5x5 box. I would definitely decrease the amount of bounding boxes needed, but I wouldn't even know how to start coding it.