Custom Convex Problems

Hello all,

I seem to be having a problems with creating a custom Convex class that I've been creating. Simply put, the player (or any shapebase) doesn't collide with it properly (the Convex::getPolyList method). If you move really slowly you can manage to climb/sink through the convex, and as far as I can tell some sides don't collide at all.

Here is what the convex looks like:
Front:

Side:


I've drawn out the edges of the convex with blue lines so I could see what my convex actually looked like. Click to see a larger image if you can't make out the lines.

My overloaded Convex::getPolyList method returns all the polys clockwise oriented. I even copied the order of the polys added by BoxConvex - but still to no avail. Does what order I add in the polys to the list really matter?

A snippet of getPolyList:

void ForceFieldConvex::getPolyList(AbstractPolyList* list)
{
   static const unsigned int OFFSET = 1;
   //Set our object
   list->setObject(mObject);

   //Build a small enclosing convex

      //Copy the vertices twice into mConvexVert
      for(int j = 0; j < 8; ++j)
         mConvexVert[j] = pOwner->mVertices[j%4];

      //Next add an offset to the first 4 vertices
      for(int j = 0; j < 4; ++j)
         mConvexVert[j].y -= OFFSET;

      //Next subtract an offset to the next 4 vertices
      for(int j = 4; j < 8; ++j)
         mConvexVert[j].y += OFFSET;

      //Now make setup the list
      U32 base = list->addPoint(mConvexVert[0]);

      for(int j = 1; j < 8; ++j)
         list->addPoint(mConvexVert[j]);
      
      //Front face
      list->begin(0,0);
      list->vertex(base + 3);
      list->vertex(base);
      list->vertex(base + 1);
      list->vertex(base + 2);
      list->plane(base + 3, base, base + 1);
      list->end();

      //...

      //Top face
      list->begin(0,5);
      list->vertex(base);
      list->vertex(base + 1);
      list->vertex(base + 5);
      list->vertex(base + 4);
      list->plane(base, base + 1, base + 5);
      list->end();

It doesn't use the same indexing as Box Convex, but the same positioning of vertices are added in the same order.

The object stores all of its coordinates (for itself and it's convex vertices) in world coordinates. As far as I can tell this seems safe. Considering how collision already seems to sort of register, I don't think this is a problem.

Thanks for your time in advance,

- Eric

EDIT: Geez - I thought those pics would show up as thumbnails. I apologize to the 56kers.