Function LoadBSPNode

Descent3/bsp.cpp:214–240

Loads a bsp node from an open file and recurses with its children

// Loads a bsp node from an open file and recurses with its children
void LoadBSPNode(CFILE *infile, bspnode **node) {
  // Get the node type
  uint8_t type = cf_ReadByte(infile);

  // Allocate the node and set its type
  *node = NewBSPNode();
  ASSERT(*node);
  bspnode *localnode = *node;

  localnode->type = type;

  if (type == BSP_EMPTY_LEAF || type == BSP_SOLID_LEAF)
    return;

  // Load the nodes plane
  localnode->plane.a = cf_ReadFloat(infile);
  localnode->plane.b = cf_ReadFloat(infile);
  localnode->plane.c = cf_ReadFloat(infile);
  localnode->plane.d = cf_ReadFloat(infile);
  localnode->node_roomnum = cf_ReadShort(infile);
  localnode->node_facenum = cf_ReadShort(infile);
  localnode->node_subnum = cf_ReadByte(infile);

  // Recurse to get the children
  LoadBSPNode(infile, &localnode->front);
  LoadBSPNode(infile, &localnode->back);
}

// Frees up a polygon and all the vertices associated with it
void FreePolygon(bsppolygon *poly) {