private void DrawRooms(RogueLevel level)
{
foreach (var room in level.Rooms)
{
for (var x = 0; x < room.Size.X; x++)
{
for (var y = 0; y < room.Size.Y; y++)
{
ITile tile;
Coordinate coordinate = new Coordinate(
room.Position.X + x,
room.Position.Y + y);
if (x == 0 || y == 0 || x == room.Size.X - 1 || y == room.Size.Y - 1)
{
tile = new Tile("wall", coordinate, true).AddTag("visionblocker");
}
else
{
tile = new Tile("floor", coordinate);
}
level.SetTile(coordinate, tile);
}
}
}
}
public ILevel Generate()
{
var rogueLevel = new RogueLevel(new Coordinate(
this.Parameters.GetParameter<int>(ParameterNames.LevelWidth),
this.Parameters.GetParameter<int>(ParameterNames.LevelHeight)));
this.DoRooms(rogueLevel);
this.DoCorridors(rogueLevel);
this.GenerateStairs(rogueLevel);
return rogueLevel;
}
private void DoRooms(RogueLevel level)
{
int maxRooms = this.Parameters.GetParameter<int>(ParameterNames.MaxRooms);
int horizontalCellCount = this.Parameters.GetParameter<int>(ParameterNames.HorizontalCellCount);
int verticalCellCount = this.Parameters.GetParameter<int>(ParameterNames.VerticalCellCount);
int maxWidth = level.Size.X / horizontalCellCount;
int maxHeight = level.Size.Y / verticalCellCount;
for (var i = 0; i < maxRooms; i++)
{
var topX = ((i % 3) * maxWidth) + 1;
int topY = (i / 3) * maxHeight;
var margin = 2; // Make sure there's some space between rooms.
var roomWidth = DmRandom.Next(4, maxWidth - margin);
var roomHeight = DmRandom.Next(4, maxHeight - margin);
var positionX = topX + DmRandom.Next(0, -margin + maxWidth - roomWidth);
var positionY = topY + DmRandom.Next(0, -margin + maxHeight - roomHeight);
if (positionX < 1)
{
roomWidth--;
positionX = 1;
}
if (positionY < 1)
{
roomHeight--;
positionY = 1;
}
level.Rooms.Add(new RogueLevel.Room
{
InGraph = false,
Cell = new Coordinate(i % 3, i / 3),
Position = new Coordinate(positionX, positionY),
Size = new Coordinate(roomWidth, roomHeight)
});
}
this.DrawRooms(level);
}
private void GenerateStairs(RogueLevel level)
{
var stairsTile = level.TileList.SelectRandom(
true,
t => t.Type == "floor");
stairsTile.Type = "stairs";
}
private void DrawCorridor(RogueLevel level, RogueLevel.Room first, RogueLevel.Room second)
{
Coordinate startPoint, endPoint, delta, turnDelta;
RogueLevel.Room from, to;
bool right;
int distance;
int turnPoint;
int turnLength;
from = first.Index < second.Index ? first : second;
to = first.Index < second.Index ? second : first;
right = from.Index + 1 == to.Index;
if (right)
{
startPoint = new Coordinate(
from.Position.X + from.Size.X - 1,
from.Position.Y + DmRandom.Next(from.Size.Y - 2) + 1);
endPoint = new Coordinate(
to.Position.X,
to.Position.Y + DmRandom.Next(to.Size.Y - 2) + 1);
delta = new Coordinate(1, 0);
distance = System.Math.Abs(startPoint.X - endPoint.X) - 1;
turnDelta = new Coordinate(0, startPoint.Y < endPoint.Y ? 1 : -1);
turnLength = System.Math.Abs(startPoint.Y - endPoint.Y);
}
else
{
// downward corridor
startPoint = new Coordinate(
from.Position.X + DmRandom.Next(from.Size.X - 2) + 1,
from.Position.Y + from.Size.Y - 1);
endPoint = new Coordinate(
to.Position.X + DmRandom.Next(to.Size.X - 2) + 1,
to.Position.Y);
delta = new Coordinate(0, 1);
distance = System.Math.Abs(startPoint.Y - endPoint.Y) - 1;
turnDelta = new Coordinate(startPoint.X < endPoint.X ? 1 : -1, 0);
turnLength = System.Math.Abs(startPoint.X - endPoint.X);
}
turnPoint = DmRandom.Next(1, distance - 1);
var current = new Coordinate(startPoint);
System.Action drawAtCurrent = () =>
level.SetTile(current, new Tile("passage", current));
while (distance > 0)
{
current += delta;
if (distance == turnPoint)
{
while (turnLength-- > 0)
{
drawAtCurrent();
current += turnDelta;
}
}
drawAtCurrent();
distance--;
}
var startDoor = new Tile("door", startPoint);
startDoor.AddTag(DmRandom.Next(2) == 0
? "open"
: "closed");
level.SetTile(startPoint, startDoor);
var endDoor = new Tile("door", endPoint);
endDoor.AddTag(DmRandom.Next(2) == 0
? "open"
: "closed");
level.SetTile(
endPoint,
endDoor);
}
private void DoCorridors(RogueLevel level)
{
RogueLevel.Room first = null;
RogueLevel.Room second = null;
var j = 0;
var notAlreadyConnected = new RoomCondition(target => !first.ConnectedTo.Contains(target));
var notAlreadyInGraph = new RoomCondition(target => !target.InGraph);
var firstCanConnect = new RoomCondition(target => first.CanConnectTo(target));
var randomMagic = new RoomCondition(target => DmRandom.Next(++j) == 0);
var conditions = new List<RoomCondition>();
var perform = new Action<int, bool>((count, randomFirst) =>
{
int left = count;
do
{
if (randomFirst)
{
first = level.Rooms.Shuffle()[0];
}
j = 0;
foreach (var targetRoom in level.Rooms.Where(first.CanConnectTo))
{
try
{
second = level.Rooms.SelectRandom(
shortCircuit: true,
conditions: conditions.ToArray());
}
catch (System.Exception)
{
// No valid element, so just go on.
}
}
// if we didn't find any room we could connect to at all, shuffle.
if (j == 0)
{
do
{
first = level.Rooms.Shuffle()[0];
}
while (!first.InGraph);
}
else
{
Connect(level, first, second);
left--;
}
}
while (left > 0);
});
// The order matters, since we short circuit.
// Always keep randomMagic at the end.
conditions.Add(firstCanConnect);
conditions.Add(notAlreadyInGraph);
conditions.Add(randomMagic);
first = level.Rooms.Shuffle()[0];
first.InGraph = true;
perform(this.parameters.GetParameter<int>(ParameterNames.MaxRooms) - 1, false);
conditions.Clear();
conditions.Add(firstCanConnect);
conditions.Add(notAlreadyConnected);
conditions.Add(randomMagic);
var randomExtras = DmRandom.Next(1, 4);
perform(DmRandom.Next(1, 4), true);
}
private void Connect(RogueLevel level, RogueLevel.Room a, RogueLevel.Room b)
{
b.InGraph = true;
a.ConnectedTo.Add(b);
b.ConnectedTo.Add(a);
this.DrawCorridor(level, a, b);
}