////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary> Merge two rooms. </summary>
///
/// <remarks> Named as though dir was vertical. Darrellp, 9/22/2011. </remarks>
///
/// <param name="topRoomsGridLocation"> The location of the top room in the grid. </param>
/// <param name="dir"> The direction of the merge. </param>
////////////////////////////////////////////////////////////////////////////////////////////////////
private void MergeTwoRooms(MapCoordinates topRoomsGridLocation, Dir dir)
{
// Get grid coordinates of the other room
MapCoordinates bottomRoomsGridLocation = topRoomsGridLocation.NextLarger(dir);
Dir otherDir = MapCoordinates.OtherDirection(dir);
// Retrieve both rooms
RectangularRoom topRoom = RoomAt(topRoomsGridLocation);
RectangularRoom bottomRoom = RoomAt(bottomRoomsGridLocation);
// Are the rooms unmergable?
if (!CheckMergeForOverlap(topRoom, bottomRoom, otherDir))
{
// Return and don't merge them - use normal corridors
return;
}
// Remove their generic counterparts
_mapRoomToGenericRooms.Remove(topRoom);
_mapRoomToGenericRooms.Remove(bottomRoom);
// Get their current coordinates, etc.
int topRoomsBottom = topRoom.LargeCoord(dir);
int topRoomsTop = topRoom.SmallCoord(dir);
int bottomRoomsTop = bottomRoom.SmallCoord(dir);
int bottomRoomsHeight = bottomRoom.Size(dir);
int topRoomsWidth = topRoom.Size(otherDir);
int bottomRoomsWidth = bottomRoom.Size(otherDir);
// Pick a random spot between the rooms to merge them
// This will be the new inside coord of the small coordinate room
int mergeRow = _rnd.Next(topRoomsBottom, bottomRoomsTop);
// Determine all the new coordinates
int topRoomsNewHeight = mergeRow - topRoomsTop + 1;
int bottomRoomsNewHeight = bottomRoomsTop - mergeRow + bottomRoomsHeight - 1;
MapCoordinates bottomRoomsLocation = bottomRoom.Location;
bottomRoomsLocation[dir] = mergeRow + 1;
// Create our new expanded rooms
RectangularRoom roomTopNew = RectangularRoom.CreateUndirectional(
topRoom.Location,
topRoomsNewHeight,
topRoomsWidth,
topRoomsGridLocation[dir],
topRoomsGridLocation[otherDir],
dir);
RectangularRoom roomBottomNew = RectangularRoom.CreateUndirectional(
bottomRoomsLocation,
bottomRoomsNewHeight,
bottomRoomsWidth,
bottomRoomsGridLocation[dir],
bottomRoomsGridLocation[otherDir],
dir);
// Install the new rooms
SetRoomAt(topRoomsGridLocation, roomTopNew);
SetRoomAt(bottomRoomsGridLocation, roomBottomNew);
// Create the new generic rooms
// We don't create the single merged generic room until we excavate because we don't know
// the layout until then.
_mapRoomToGenericRooms[roomTopNew] = roomTopNew.ToGeneric();
_mapRoomToGenericRooms[roomBottomNew] = roomBottomNew.ToGeneric();
// Mark this in our merges structure
_merges.Connect(topRoomsGridLocation, bottomRoomsGridLocation);
}
