port of "enhanced weapons" needs debugging. help?

//Ron Nelson/Deepscratch: Enhanced Projectiles for T3D --- Start ---
bool TSMesh::castRayTri( S32 frame, const Point3F& start, const Point3F& end, TriRayInfo* rayInfo, TSMaterialList* materials )
{
   // Loop thru the triangles of the first frame.
   const S32 firstVert = vertsPerFrame * frame;

   F32 hit = F32_MAX;

   Point3F dir( end - start );
   dir.normalizeSafe();

   for ( S32 i = 0; i < primitives.size(); i++ )
   {
      const TSDrawPrimitive& draw = primitives[i];

      AssertFatal( draw.matIndex & TSDrawPrimitive::Indexed, "TSMesh::castRayTri, got non-indexed primitive!" );

      // gonna depend on what kind of primitive it is...
      if ( ( draw.matIndex & TSDrawPrimitive::TypeMask ) == TSDrawPrimitive::Triangles )
      {
         for ( S32 j=0; j < draw.numElements; j+=3 )
         {
            const U32 idx0 = indices[draw.start+j+0] + firstVert;
            const U32 idx1 = indices[draw.start+j+1] + firstVert;
            const U32 idx2 = indices[draw.start+j+2] + firstVert;

            F32 h, u, v;
            if ( MathUtils::rayTriangleIntersect( start, dir, mVertexData[firstVert + idx2].vert(), mVertexData[firstVert + idx1].vert(), 
               mVertexData[firstVert + idx0].vert(), &h, &v, &u ) && h < hit ) 
            {
               hit = h;
			   
               rayInfo->distance = hit;
               rayInfo->point = start + ( dir * hit );

			   U32 matIndex = draw.matIndex & TSDrawPrimitive::MaterialMask;
			   if (materials && materials->getMaterialCount() > 0)
				   rayInfo->material = materials->getMaterialInst( matIndex );
			   else
				   rayInfo->material = NULL;

               Point3F temp[3] =
               {
				   mVertexData[firstVert + idx0].vert(),
				   mVertexData[firstVert + idx1].vert(),
				   mVertexData[firstVert + idx2].vert()
               };
               Point3F bc = MathUtils::getBarrycentricCoord( rayInfo->point, temp );

			   rayInfo->uv = Point2F( 
                  (bc.x *  mVertexData[firstVert + idx0].tvert().x) + (bc.y *  mVertexData[firstVert + idx1].tvert().x) + (bc.z * mVertexData[firstVert + idx2].tvert().x ),
                  (bc.x * mVertexData[firstVert + idx0].tvert().y) + (bc.y * mVertexData[firstVert + idx1].tvert().y) + (bc.z * mVertexData[firstVert + idx2].tvert().y ) );
            }
         }
      }
      else
      {
         AssertFatal( ( draw.matIndex & TSDrawPrimitive::Strip ) == TSDrawPrimitive::Strip, "TSMesh::castRayTri, unexpected primitive type!" );

         U32 idx0 = indices[draw.start + 0] + firstVert;
         U32 idx1;
         U32 idx2 = indices[draw.start + 1] + firstVert;
         U32* nextIdx = &idx1;
         for ( S32 j = 2; j < draw.numElements; j++ )
         {
            *nextIdx = idx2;
            nextIdx = (U32*) ( (dsize_t)nextIdx ^ (dsize_t)&idx0 ^ (dsize_t)&idx1);
            idx2 = indices[draw.start + j] + firstVert;

            F32 h, u, v;

			//Added by Sorin D.
			if(MathUtils::rayTriangleIntersect( start, dir, mVertexData[firstVert + idx2].vert(), 
														    mVertexData[firstVert + idx1].vert(), 
															mVertexData[firstVert + idx0].vert(), &h, &v, &u ) && h < hit )
			   //Added by Sorin D. End
            {
               hit = h;

               rayInfo->distance = hit;
               rayInfo->point = start + ( dir * hit );

			   U32 matIndex = draw.matIndex & TSDrawPrimitive::MaterialMask;			   
			   if (materials && materials->getMaterialCount() > 0)
				   rayInfo->material = materials->getMaterialInst( matIndex );
			   else
			   {
				   rayInfo->material = NULL;
			   }

               Point3F temp[3] =
               {
                  mVertexData[firstVert + idx0].vert(),
                  mVertexData[firstVert + idx1].vert(),
				  mVertexData[firstVert + idx2].vert()
               };

               Point3F bc = MathUtils::getBarrycentricCoord( rayInfo->point, temp );

               rayInfo->uv = Point2F( 
                  (bc.x *  mVertexData[firstVert + idx0].tvert().x) + (bc.y *  mVertexData[firstVert + idx1].tvert().x) + (bc.z * mVertexData[firstVert + idx2].tvert().x ),
                  (bc.x * mVertexData[firstVert + idx0].tvert().y) + (bc.y * mVertexData[firstVert + idx1].tvert().y) + (bc.z * mVertexData[firstVert + idx2].tvert().y ) );
            }
         }
      }
   }

   return hit < F32_MAX;
}

//Enhanced Projectiles
//Ron Nelson/Deepscratch: Enhanced Projectiles for T3D --- End ---