/// <summary>
/// Generates a rectabgular room (or hall) and tries to attach it to the specified door (FloorTile)
/// </summary>
/// <param name="rooms"></param>
/// <param name="roomType"></param>
/// <param name="preferredDoor"></param>
/// <returns></returns>
private static Room GenerateGenericRoom( List<Room> rooms, CastleRoomType roomType, FloorTile targetDoor )
{
Room room = new Room(roomType);
int tries = 0;
int maxTries = 5;
while( tries++ < maxTries )
{
int w = 0;
int h = 0;
int numDoors = 0;
int doorSpacing = 6; // used for LongHall only
int hallWidth = 5; // used for LongHall only. Includes walls on either side : 3 should be the minimum, works best with odd numbers
#region Specify sizes and number of doors, based on roomType
switch( roomType )
{
case CastleRoomType.Bedroom:
w = rand.Next(5, 9) + 2;
h = rand.Next(5, 9) + 2;
numDoors = 1;
break;
case CastleRoomType.BedroomMaster:
w = rand.Next(6, 10) + 2;
h = rand.Next(6, 10) + 2;
numDoors = 2;
break;
case CastleRoomType.Closet:
w = rand.Next(1, 3) + 2;
h = rand.Next(1, 3) + 2;
numDoors = 1;
break;
case CastleRoomType.GreatRoomRectangle:
w = rand.Next(10, 25) + 2;
h = rand.Next(15, 25) + 2;
numDoors = 6;
break;
case CastleRoomType.GreatRoomSquare:
w = rand.Next(10, 25) + 2;
h = w;
numDoors = 6;
break;
case CastleRoomType.GreatroomCircle:
w = rand.Next(15,30) + 2;
if( w%2==0 )
w++;
h = w;
numDoors = 2*(rand.Next(6)+1);
break;
case CastleRoomType.Kitchen:
w = rand.Next(3, 11) + 2;
h = rand.Next(3, 11) + 2;
numDoors = 3;
break;
case CastleRoomType.Storage:
w = rand.Next(2, 5) + 2;
h = rand.Next(2, 5) + 2;
numDoors = 1;
break;
case CastleRoomType.LongHall:
if( rand.Next(2) == 0 )
{
w = doorSpacing * (1+rand.Next(8));
h = hallWidth;
numDoors = w/doorSpacing;
}
else
{
w = hallWidth;
h = doorSpacing * (1+rand.Next(8));
numDoors = h/doorSpacing;
}
break;
}
#endregion
room.cells = new FloorTile[w, h];
room.doors.Clear();
switch( roomType )
{
case CastleRoomType.GreatroomCircle:
#region Circular Greatroom may have pillars (and generation is more complex than rectangular rooms)
// fill room dimensions with wall
for( int i = 0; i < w; i++ )
for( int j = 0; j < h; j++ )
room.cells[i, j] = new FloorTile(i, j, FloorType.Wall);
// hollow out center, leaving a border of wall tiles
for( int i = 1; i<w-1; i++ )
for( int j = 1; j<h-1; j++ )
if( (int)Math.Sqrt(Math.Pow(w/2 - i, 2.0) + Math.Pow(h/2 - j, 2.0)) < w/2.0-1 )
room.cells[i, j].type = FloorType.Floor;
// Add pillars around the middle?
if( rand.Next(2)==0 )
{
int pillars = (1+rand.Next(6))*2;
double dist = rand.Next(3, w/2 - 2);
for( int i=0; i<pillars; i++ )
{
room.cells[(int)Math.Round(w/2 - dist * Math.Cos(i*2.0*Math.PI/pillars), 0),
(int)Math.Round(w/2 - dist * Math.Sin(i*2.0*Math.PI/pillars), 0)
].type = FloorType.Wall;
}
}
#endregion
break;
case CastleRoomType.GreatRoomRectangle:
case CastleRoomType.GreatRoomSquare:
#region Greatrooms may have pillars
// make solid wall outline, hollow center
for( int i = 0; i < w; i++ )
for( int j = 0; j < h; j++ )
{
room.cells[i, j] = new FloorTile(i, j);
if( i == 0 || i == w - 1 || j == 0 || j == h - 1 )
room.cells[i, j].type = FloorType.Wall;
else
room.cells[i, j].type = FloorType.Floor;
}
bool NSpillars = false;
bool EWpillars = false;
// Add pillars around the middle?
switch( rand.Next(4) )
{
case 1:
// all the way around the room
NSpillars = EWpillars = true;
break;
case 2:
// N/S walls only
NSpillars = true;
break;
case 3:
// E/W walls only
EWpillars = true;
break;
default:
// no pillars.
break;
}
// spacing for pillars should be consistent within a room
int offset = rand.Next(2,6);
int spacing = rand.Next(2,8);
if( NSpillars )
for( int i=offset; i<=w/2; i+=spacing )
{
room.cells[i, offset].type = FloorType.Wall;
room.cells[i, h-1-offset].type = FloorType.Wall;
room.cells[w-1-i, offset].type = FloorType.Wall;
room.cells[w-1-i, h-1-offset].type = FloorType.Wall;
}
if( EWpillars )
for( int i=offset; i<=h/2; i+=spacing )
{
room.cells[offset, i].type = FloorType.Wall;
room.cells[w-1-offset, i].type = FloorType.Wall;
room.cells[offset, h-1-i].type = FloorType.Wall;
room.cells[w-1-offset, h-1-i].type = FloorType.Wall;
}
#endregion
break;
default:
#region All other rectangualr rooms, including LongHall
// make solid wall outline, hollow center
for( int i = 0; i < w; i++ )
for( int j = 0; j < h; j++ )
{
room.cells[i, j] = new FloorTile(i, j);
if( i == 0 || i == w - 1 || j == 0 || j == h - 1 )
room.cells[i, j].type = FloorType.Wall;
else
room.cells[i, j].type = FloorType.Floor;
}
#endregion
break;
}
// So far, only applicable to LongHall and GreatRooms
// If we haven't connected to a GreatRoom after half the max tried, stop limiting the attemps.
// This setting has no effect on other room connections (so far).
bool allowConnectionBias = tries < maxTries/2;
if( !PlaceRoom( rooms, room, roomType, allowConnectionBias, targetDoor ) )
continue;
// placed a room via connection - remove that door from the number we're going to generate.
// (closets, for example, should have that connection count as their only door)
if( rooms.Count > 0 )
numDoors--;
// set doors
if( roomType == CastleRoomType.GreatroomCircle )
{
#region Circular rooms will only place doors along the "flat" sections near N, E, S, W sides.
int count = 0;
int maxDoorTries = 30;
int doorTries = 0;
while( count < numDoors && doorTries < maxDoorTries )
{
double angle = rand.Next(360) * Math.PI / 180.0;
int tX = (int)Math.Round((w/2) + (w-1)/2 * Math.Cos(angle), 0);
int tY = (int)Math.Round((w/2) + (w-1)/2 * Math.Sin(angle), 0);
bool EW = tX>0
&& tX<w-1
&& (room.cells[tX-1, tY].type == FloorType.Wall) // || room.cells[tX-1, tY].type == FloorType.DoorClosed)
&& (room.cells[tX+1, tY].type == FloorType.Wall); // || room.cells[tX+1, tY].type == FloorType.DoorClosed);
bool NS = tY>0
&& tY<h-1
&& (room.cells[tX, tY-1].type == FloorType.Wall) // || room.cells[tX, tY-1].type == FloorType.DoorClosed)
&& (room.cells[tX, tY+1].type == FloorType.Wall); // || room.cells[tX, tY+1].type == FloorType.DoorClosed);
if( EW ^ NS ) // exclusive OR : must be one or the other, but not neither, and not both.
{
room.doors.Add(room.cells[tX, tY]);
room.cells[tX, tY].type = FloorType.DoorClosed;
count++;
}
else
{
// failed to place - up the count
doorTries++;
}
}
#endregion
}
else if( roomType == CastleRoomType.LongHall )
{
#region Special case : add doors one each end, and evenly spaced down both sides
if( w > h )
{
// E/W hall
room.doors.Add(room.cells[0, h/2]);
room.doors.Add(room.cells[w-1, h/2]);
for( int i = 0; i < w/doorSpacing; i++ )
{
room.doors.Add(room.cells[doorSpacing/2 + i*doorSpacing, 0+0]);
room.doors.Add(room.cells[doorSpacing/2 + i*doorSpacing, h-1]);
}
}
else
{
// N/S hall
room.doors.Add(room.cells[w/2, 0]);
room.doors.Add(room.cells[w/2, h-1]);
for( int i = 0; i < h/doorSpacing; i++ )
{
room.doors.Add(room.cells[0+0, doorSpacing/2 + i*doorSpacing]);
room.doors.Add(room.cells[w-1, doorSpacing/2 + i*doorSpacing]);
}
}
foreach( FloorTile door in room.doors )
door.type = FloorType.DoorClosed;
#endregion
}
else
{
#region All other square rooms
for( int i = 0; i < numDoors; i++ )
{
if( rand.Next(2) == 0 )
// top/bottom... x= whatever, and y=1 (top edge) or y=h-2 (bottom edge)
room.doors.Add(room.cells[rand.Next(1, w - 2), rand.Next(2) * (h - 1)]);
else
// left/right... x=1 (left side) or x=w-2 (right side) and y = whatever
room.doors.Add(room.cells[rand.Next(2) * (w - 1), rand.Next(1, h - 2)]);
room.doors[room.doors.Count-1].type = FloorType.DoorClosed;
}
#endregion
}
return room;
}
// could not find a valid connection for this room... gave up
return null;
}
/// <summary>
/// True = valid placement
/// False = invalid (overlap found)
/// </summary>
/// <param name="room"></param>
/// <param name="door"></param>
/// <returns></returns>
private static bool CheckRoomTilesAgainstGrid( Room room, FloorTile door )
{
FloorType gcType;
FloorType rcType;
foreach( FloorTile roomCell in room.cells )
{
// bounds checking - id it would fall off the scope of the base grid[,], then it's a no-go.
if( roomCell.x < 1 || roomCell.x >= grid.GetLength(0)-1 || roomCell.y<1 || roomCell.y>=grid.GetLength(1)-1 )
return false;
gcType = grid[roomCell.x, roomCell.y].type;
rcType = roomCell.type;
if( (rcType != FloorType.Wall && gcType != FloorType.Wall)
||
(rcType == FloorType.Wall && gcType != FloorType.Wall && !(roomCell.x==door.x && roomCell.y==door.y))
)
{
return false;
}
}
// checked everything and it was all OK. Valid placement.
return true;
}
/// <summary>
/// True = valid placement found, room has been updated to the correct offset.
/// False = no valid connections, room has been updated to last tried offset (but is probably useless).
/// </summary>
/// <param name="room"></param>
/// <param name="door"></param>
/// <returns></returns>
private static bool CheckRoomAgainstGrid( Room room, FloorTile door )
{
return CheckRoomAgainstGrid(room, door, new Directions[] { Directions.North, Directions.East, Directions.South, Directions.West });
}
/// <summary>
/// True = valid placement found, room has been updated to the correct offset.
/// False = no valid connections, room has been updated to last tried offset (but is probably useless).
/// </summary>
/// <param name="room"></param>
/// <param name="door"></param>
/// <param name="directions"></param>
/// <returns></returns>
private static bool CheckRoomAgainstGrid( Room room, FloorTile door, Directions[] directions )
{
// kind of cumbersome, but allows random selection and deletion by reference.
// Arrays are more difficult to remove things from.
List<Directions> dirs = new List<Directions>();
for( int i=0; i<directions.Length; i++ )
dirs.Add(directions[i]);
// try attaching to the north
int w = room.cells.GetLength(0);
int h = room.cells.GetLength(1);
Directions d;
// Pick a direction specified, and test it.
// Avoids obvious bias against North, and allows specific tests for certain room types (halls, for example)
while( dirs.Count > 0 )
{
d = dirs[rand.Next(dirs.Count)];
dirs.Remove(d);
switch( d )
{
case Directions.North: // try attaching to the north
room.SetRoomPosition(door.x - w/2, door.y-h+1);
if( CheckRoomTilesAgainstGrid(room, door) )
return true;
break;
case Directions.South: // try attaching to the south
room.SetRoomPosition(door.x - w/2, door.y);
if( CheckRoomTilesAgainstGrid(room, door) )
return true;
break;
case Directions.East: // try attaching to the east
room.SetRoomPosition(door.x-w+1, door.y-h/2);
if( CheckRoomTilesAgainstGrid(room, door) )
return true;
break;
case Directions.West: // try attaching to the west
room.SetRoomPosition(door.x, door.y-h/2);
if( CheckRoomTilesAgainstGrid(room, door) )
return true;
break;
}
}
// no valid connection found.
return false;
}
/// <summary>
/// Tries to place the specified room.
/// True = successful, and the connecting door has been flagged.
/// False = unable to find a connection.
/// </summary>
/// <param name="rooms"></param>
/// <param name="room"></param>
/// <param name="roomType"></param>
/// <param name="allowConnectionBias"></param>
/// <param name="targetDoor"></param>
/// <returns></returns>
private static bool PlaceRoom(List<Room> rooms, Room room, CastleRoomType roomType, bool allowConnectionBias, FloorTile targetDoor )
{
int w = room.cells.GetLength(0);
int h = room.cells.GetLength(1);
if( rooms.Count == 0 )
{
// place in middle
room.SetRoomPosition(grid.GetLength(0)/2 - w/2, grid.GetLength(1)/2 - h/2);
}
else
{
// pick a door to attach to, build from there.
List<FloorTile> doors = new List<FloorTile>();
FloorTile connectionDoor = null;
if( targetDoor != null )
{
doors.Add(targetDoor);
}
else if( allowConnectionBias )
{
switch( roomType )
{
case CastleRoomType.LongHall:
// custom bias to connect long Halls to Great Rooms if at all possible.
foreach( Room r in rooms )
if( r.type == CastleRoomType.GreatroomCircle
||r.type == CastleRoomType.GreatRoomSquare
||r.type == CastleRoomType.GreatRoomRectangle
)
foreach( FloorTile door in r.doors )
if( door.type == FloorType.DoorClosed)
doors.Add(door);
break;
case CastleRoomType.GreatroomCircle:
case CastleRoomType.GreatRoomRectangle:
case CastleRoomType.GreatRoomSquare:
// Greatrooms should try to attach to the end of hallways.
// Since the LongHall are generated with the end doors first, we can
// reference those tow doors directly without searching though the room's doors list
foreach( Room r in rooms )
if( r.type == CastleRoomType.LongHall )
{
if( r.doors[0].type == FloorType.DoorClosed)
doors.Add(r.doors[0]);
if( r.doors[1].type == FloorType.DoorClosed)
doors.Add(r.doors[1]);
}
break;
default:
// no custom doors list - the default of "All of them" will be used below
break;
}
}
// Check for custom doors list - if there are none, default to use all doors in all rooms for tries.
if( doors.Count == 0 )
{
foreach( Room r in rooms )
foreach( FloorTile door in r.doors )
if( door.type == FloorType.DoorClosed)
doors.Add(door);
}
// In the event of a LongHall, we'd like to attach it so that it
// traveles away from the room being attached to, rather than attaching along the side of the hall.
Directions[] directions;
if( roomType == CastleRoomType.LongHall )
{
if( w>h )
{
// E/W hall - try to attach on East or West side only
directions = new Directions[] { Directions.East, Directions.West };
}
else
{
// N/S hall - attach north or south only.
directions = new Directions[] { Directions.North, Directions.South };
}
}
else
{
// all other rooms may try to attach from any direction
directions = new Directions[] { Directions.North, Directions.East, Directions.South, Directions.West };
}
while( doors.Count>0 && connectionDoor==null )
{
// pick a door
// try to attach to it to the N/E/W/S
// update room position accordingly
// check room.cells against all other room.cells
// break loop when successful
FloorTile door = doors[rand.Next(doors.Count)];
doors.Remove(door);
if( CheckRoomAgainstGrid(room, door, directions) )
{
connectionDoor = door;
break;
}
}
// failed to place room
if( connectionDoor == null )
return false;
//set the connection door
foreach( FloorTile cell in room.cells )
if( cell.x==connectionDoor.x && cell.y==connectionDoor.y )
{
cell.type = FloorType.DoorOpen;
connectionDoor.type = FloorType.DoorOpen;
break;
}
}
return true;
}
