Function PlaceExternalRoom

editor/HRoom.cpp:1842–1881

Place a room on the terrain for orientation before attachment Parameters: cellnum - the cell where the room is being placed placed_room - the number of the room to be attached placed_room_face the face on placed_room that's attached

//					placed_room - the number of the room to be attached
//					placed_room_face the face on placed_room that's attached
void PlaceExternalRoom(int cellnum, int placed_room, int placed_room_face, bool align_to_terrain) {
  room *placedroomp = &Rooms[placed_room];

  // Clear the placed group if one exists
  Placed_group = NULL;

  // Clear the placed door if one exists
  if (Placed_door != -1) {
    ASSERT(Placed_room != -1);
    FreeRoom(&Rooms[Placed_room]);
    Placed_door = Placed_door = -1;
  }

  // Set globals
  Placed_room = placed_room;
  Placed_room_face = placed_room_face;
  Placed_room_angle = 0;
  Placed_baseroomp = NULL;

  if (align_to_terrain)
    Placed_room_orient.fvec = TerrainNormals[MAX_TERRAIN_LOD - 1][cellnum].normal1;
  else
    Placed_room_orient.fvec = Identity_matrix.uvec;

  // Compute attach point on terrain
  ComputeTerrainSegmentCenter(&Placed_room_attachpoint, cellnum);

  // Compute attach points on each face
#ifndef NEWEDITOR
  ComputeCenterPointOnFace(&Placed_room_origin, placedroomp, placed_room_face);
#else
  ComputeFaceBoundingCircle(&Placed_room_origin, placedroomp, placed_room_face);
#endif

  // Compute initial orientation matrix
  ComputePlacedRoomMatrix();

  // Set the flag
  State_changed = 1;
}

// Find all the matching faces between two rooms and join them
// Returns the number of new portals created