public static int SidesOpened(this Tile.MoveType t)
{
if (0 != (t & Tile.MoveType.Open_HEX))
{
throw new NotImplementedException("don't support hex yet");
}
if (t == Tile.MoveType.Open_HORIZ)
{
return(4);
}
int sidesOpened = 0;
if (0 != (t & Tile.MoveType.Open_NORTH))
{
++sidesOpened;
}
if (0 != (t & Tile.MoveType.Open_EAST))
{
++sidesOpened;
}
if (0 != (t & Tile.MoveType.Open_SOUTH))
{
++sidesOpened;
}
if (0 != (t & Tile.MoveType.Open_WEST))
{
++sidesOpened;
}
return(sidesOpened);
}
/// <summary>
/// Gets the opposite MoveType to the one specified. Can do most
/// hex directionality, but will get confused with hex horiz vs
/// non-hex horiz. Will have to create a new func later to handle
/// that case (maybe with specified "preferHex" bool?)
/// </summary>
/// <param name="t">The MoveType for which to find the opposite</param>
/// <returns>The opposite MoveType</returns>
public static Tile.MoveType GetOpposite(this Tile.MoveType t)
{
switch (t)
{
case Tile.MoveType.Wall:
return(Tile.MoveType.Open_ALL);
case Tile.MoveType.Open_NORTH:
return(Tile.MoveType.Open_SOUTH);
case Tile.MoveType.Open_EAST:
return(Tile.MoveType.Open_WEST);
case Tile.MoveType.Open_SOUTH:
return(Tile.MoveType.Open_NORTH);
case Tile.MoveType.Open_WEST:
return(Tile.MoveType.Open_EAST);
case Tile.MoveType.Open_HORIZ:
return(Tile.MoveType.Open_VERT);
case Tile.MoveType.Open_UP:
return(Tile.MoveType.Open_DOWN);
case Tile.MoveType.Open_DOWN:
return(Tile.MoveType.Open_UP);
case Tile.MoveType.Open_VERT:
return(Tile.MoveType.Open_HORIZ);
case Tile.MoveType.Open_ALL:
return(Tile.MoveType.Wall);
case Tile.MoveType.Open_HEX_NW:
return(Tile.MoveType.Open_HEX_SE);
case Tile.MoveType.Open_HEX_NE:
return(Tile.MoveType.Open_HEX_SW);
case Tile.MoveType.Open_HEX_SE:
return(Tile.MoveType.Open_HEX_NW);
case Tile.MoveType.Open_HEX_SW:
return(Tile.MoveType.Open_HEX_NE);
case Tile.MoveType.Open_HEX_HORIZ:
throw new NotSupportedException("Can't do that, sorry");
default:
throw new ArgumentException("Unknown Tile.MoveType");
}
}
public void SetAllToo(Tile.MoveType physics, bool[,] mask = null)
{
for (int y = 0; y < this.Height; ++y)
{
for (int x = 0; x < this.Width; ++x)
{
if (null == mask || mask[y, x])
{
this[y, x].Physics = physics;
}
}
}
}
public Brush GetFillBrushFor(Tile.MoveType physics)
{
if (physics == Tile.MoveType.Wall)
{
return(this.WallTile_Brush);
}
if ((physics & Tile.MoveType.Open_ALL) != 0)
{
// Open the tile up, and assume the border drawing will handle
// open-ness
return(this.OpenTile_Brush);
}
return(new SolidBrush(this.Background_Color));
}
/// <summary>
/// Checks if a wall exists anywhere that prevents movement from the specified tile
/// to the adjacent tile in the specified direction (including walls in that tile
/// which would prevent movement). If the movement direction is not possible due to
/// being at the edge of a map, returns true. If the specified tile is invalid,
/// returns true.
/// </summary>
public bool WallExists(int x, int y, Tile.MoveType direction)
{
if (!TileIsValid(x, y))
{
return(true);
}
if (0 == (this[y, x].Physics & direction))
{
return(true);
}
switch (direction)
{
case Tile.MoveType.Wall:
throw new ArgumentException();
case Tile.MoveType.Open_NORTH:
return(!TileIsValid(x, y - 1) || (this[y - 1, x].Physics & direction.GetOpposite()) == 0);
case Tile.MoveType.Open_EAST:
return(!TileIsValid(x + 1, y) || (this[y, x + 1].Physics & direction.GetOpposite()) == 0);
case Tile.MoveType.Open_SOUTH:
return(!TileIsValid(x, y + 1) || (this[y + 1, x].Physics & direction.GetOpposite()) == 0);
case Tile.MoveType.Open_WEST:
return(!TileIsValid(x - 1, y) || (this[y, x - 1].Physics & direction.GetOpposite()) == 0);
case Tile.MoveType.Open_HORIZ:
return(WallExists(x, y, Tile.MoveType.Open_NORTH) &&
WallExists(x, y, Tile.MoveType.Open_EAST) &&
WallExists(x, y, Tile.MoveType.Open_SOUTH) &&
WallExists(x, y, Tile.MoveType.Open_WEST));
case Tile.MoveType.Open_UP:
case Tile.MoveType.Open_DOWN:
case Tile.MoveType.Open_VERT:
case Tile.MoveType.Open_ALL:
case Tile.MoveType.Open_HEX_NW:
case Tile.MoveType.Open_HEX_NE:
case Tile.MoveType.Open_HEX_SE:
case Tile.MoveType.Open_HEX_SW:
case Tile.MoveType.Open_HEX:
case Tile.MoveType.Open_HEX_HORIZ:
default:
throw new NotImplementedException();
}
}
public void ResetTiles(int width, int height, Tile.MoveType startingPhyics = Tile.MoveType.Wall)
{
Tile[,] tiles = new Tile[height, width];
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
tiles[y, x] = new Tile()
{
Parent = this,
Physics = startingPhyics
};
}
}
this.Tiles = tiles;
this.IsHex = false; // TODO
}
public DungeonTiles(int width, int height, Tile.MoveType startingPhyics = Tile.MoveType.Wall)
{
ResetTiles(width, height, startingPhyics);
}
private void Divide(DungeonTiles d, Rectangle topRegion, bool[,] totalMask, bool[,] algMask, Random r)
{
if (null == d || null == topRegion || null == totalMask)
{
return;
}
Stack <Rectangle> subregions = new Stack <Rectangle>();
subregions.Push(topRegion);
if (null == r)
{
r = new Random();
}
while (subregions.Count > 0)
{
Rectangle currentRegion = subregions.Pop();
int roomSize = this.RoomSize - (this.RoomSizeVariability / 2) + r.Next(this.RoomSizeVariability);
roomSize = roomSize < 1 ? 1 : roomSize;
if (currentRegion.Width == 1 || currentRegion.Height == 1)
{
continue;
}
if (currentRegion.Width * currentRegion.Height <= roomSize)
{
d.Parent.CreateGroup(currentRegion, TileCategory.Room);
continue;
}
bool doHoriz = DoUseHorizontalOrientation(currentRegion.Width, currentRegion.Height, r);
// Origin of new wall - TODO is there more efficient math for this?
int wx_offset_base = (int)((1.0 - Variability) / 2.0 * currentRegion.Width);
int wy_offset_base = (int)((1.0 - Variability) / 2.0 * currentRegion.Height);
int wx_offset_rand = ((int)Math.Floor(Variability * r.NextDouble() * (currentRegion.Width - 1)));
int wy_offset_rand = ((int)Math.Floor(Variability * r.NextDouble() * (currentRegion.Height - 1)));
int wx_offset = wx_offset_base + wx_offset_rand;
int wy_offset = wy_offset_base + wy_offset_rand;
int wx = currentRegion.X + (doHoriz ? 0 : wx_offset);
int wy = currentRegion.Y + (doHoriz ? wy_offset : 0);
// Directionality
int dx = doHoriz ? 1 : 0;
int dy = doHoriz ? 0 : 1;
int len = doHoriz ? currentRegion.Width : currentRegion.Height;
// Break new wall into as many sub-walls as are appropriate (based on mask)
HashSet <List <Tile> > subWalls = new HashSet <List <Tile> >();
List <Tile> currentSubWall = new List <Tile>();
for (int i = 0; i < len; ++i, wx += dx, wy += dy)
{
if (algMask[wy, wx] && (totalMask[wy, wx] || this.BuildStrategy == ExistingDataHandling.Ignore))
{
currentSubWall.Add(d[wy, wx]);
}
else
{
if (currentSubWall.Count > 0)
{
subWalls.Add(currentSubWall);
currentSubWall = new List <Tile>();
}
continue;
}
}
subWalls.Add(currentSubWall);
Tile.MoveType newWalls = DetermineClosureMethod(doHoriz);
// Build division wall, honoring mask & leaving a passage
foreach (List <Tile> wall in subWalls)
{
int passageIdx = r.Next(0, wall.Count);
for (int i = 0; i < wall.Count; ++i)
{
if (i == passageIdx)
{
continue;
}
wall[i].Physics = wall[i].Physics.CloseOff(newWalls);
}
}
// Now subdivide the two new regions
Rectangle subregion1 = new Rectangle(
currentRegion.X,
currentRegion.Y,
doHoriz ? currentRegion.Width : wx - currentRegion.X + 1,
doHoriz ? wy - currentRegion.Y + 1 : currentRegion.Height);
Rectangle subregion2 = new Rectangle(
doHoriz ? currentRegion.X : wx + 1,
doHoriz ? wy + 1 : currentRegion.Y,
doHoriz ? currentRegion.Width : currentRegion.X + currentRegion.Width - wx - 1,
doHoriz ? currentRegion.Y + currentRegion.Height - wy - 1 : currentRegion.Height);
// Push the new subregions ont othe stack
subregions.Push(subregion1);
subregions.Push(subregion2);
if (this.GroupForDebug)
{
d.Parent.CreateGroup(subregion1);
d.Parent.CreateGroup(subregion2);
}
this.RunCallbacks(_ctx);
}
}
public static Tile.MoveType OpenUp(this Tile.MoveType t, int direction)
{
return(t.OpenUp((Tile.MoveType)direction));
}
public static Tile.MoveType OpenUp(this Tile.MoveType t, Tile.MoveType direction)
{
return(t | direction);
}
public static Tile.MoveType CloseOff(this Tile.MoveType t, int direction)
{
return(t.CloseOff((Tile.MoveType)direction));
}
public static Tile.MoveType CloseOff(this Tile.MoveType t, Tile.MoveType direction)
{
return(t & ~direction);
}
protected override void _runAlgorithm(IAlgorithmContext context)
{
DungeonTiles workingTiles = context.D.Tiles;
// Implemented via http://weblog.jamisbuck.org/2015/1/15/better-recursive-division-algorithm
if (this.WallStrategy != WallFormation.Boundaries)
{
throw new NotImplementedException();
}
// CLOBBER!
workingTiles.SetAllToo(Tile.MoveType.Open_HORIZ, context.Mask);
Stack <Subregion> subregions = new Stack <Subregion>();
// 1. Collect all the cells in the maze into a single region.
Subregion topRegion = new Subregion(workingTiles.GetTilesIn(context.Mask));
subregions.Push(topRegion);
while (subregions.Count > 0)
{
Subregion parentRegion = subregions.Pop();
int roomSize = this.RoomSize - (this.RoomSizeVariability / 2) + context.R.Next(this.RoomSizeVariability);
roomSize = roomSize < 1 ? 1 : roomSize;
if (parentRegion.Tiles.Count <= roomSize)
{
if (roomSize > 1)
{
if (this.GroupRooms)
{
workingTiles.Parent.CreateGroup(parentRegion.Tiles.ToHashSet(), TileCategory.Room);
}
}
continue;
}
// 2. Split the region into two, using the following process:
List <Tile> S = new List <Tile>();
Dictionary <Tile, Subregion_Split> tileSubregions = new Dictionary <Tile, Subregion_Split>();
foreach (Tile t in parentRegion.Tiles)
{
tileSubregions[t] = Subregion_Split.NONE;
}
// 2.1 Choose two cells from the region at random as “seeds”.
// Identify one as subregion A and one as subregion B.
// Then put them into a set S.
Tile randomSeed_A = parentRegion.Tiles.PickRandomly(context.R);
Tile randomSeed_B = randomSeed_A; // Shouldn't be equal when we're done
while (randomSeed_A == randomSeed_B)
{
randomSeed_B = parentRegion.Tiles.PickRandomly(context.R);
}
tileSubregions[randomSeed_A] = Subregion_Split.A;
tileSubregions[randomSeed_B] = Subregion_Split.B;
S.Add(randomSeed_A);
S.Add(randomSeed_B);
while (S.Count > 0)
{
// 2.2 Choose a cell at random from S. Remove it from the set.
Tile currentTile = S.PullRandomly(context.R);
// 2.3 For each of that cell’s neighbors, if the neighbor
// is not already associated with a subregion, add it to S,
// and associate it with the same subregion as the cell itself.
IList <Tile> nextAdjacents = currentTile
.GetAdjacents()
.Where(t => parentRegion.Tiles.Contains(t))
.ToList();
foreach (Tile t in nextAdjacents)
{
if (tileSubregions[t] == Subregion_Split.NONE)
{
S.Add(t);
tileSubregions[t] = tileSubregions[currentTile];
}
}
} // 2.4 Repeat 2.2 and 2.3 until the entire region has been split into two.
// 3. Construct a wall between the two regions by identifying cells
// in one region that have neighbors in the other region. Leave a
// gap by omitting the wall from one such cell pair.
List <Tuple <Tile, Tile> > wallBoundaries = new List <Tuple <Tile, Tile> >();
wallBoundaries.AddRange(
tileSubregions.Keys
// Safe to filter with hard-coded A/B due to associative property
.Where(k => tileSubregions[k] == Subregion_Split.A)
.SelectMany <Tile, Tuple <Tile, Tile> >(
t => t.GetAdjacents()
.Where(adj => parentRegion.Tiles.Contains(adj))
.Where(sr => tileSubregions[sr] == Subregion_Split.B)
.Select(t2 => new Tuple <Tile, Tile>(t, t2))));
// Leave as many gaps opened as requested
int maxGaps = Math.Min(
this.GapCount,
(int)Math.Ceiling(wallBoundaries.Count * MaxGapProportion));
for (int i = 0; i < maxGaps; ++i)
{
wallBoundaries.PullRandomly(context.R);
}
foreach (Tuple <Tile, Tile> pair in wallBoundaries)
{
Tile.MoveType touchingBoundary = workingTiles.GetCardinality(pair.Item1, pair.Item2);
pair.Item1.Physics = pair.Item1.Physics.CloseOff(touchingBoundary);
}
ISet <Tile> subregion_A = parentRegion.Tiles.Where(t => tileSubregions[t] == Subregion_Split.A).ToHashSet();
ISet <Tile> subregion_B = parentRegion.Tiles.Where(t => tileSubregions[t] == Subregion_Split.B).ToHashSet();
if (this.GroupForDebug)
{
workingTiles.Parent.CreateGroup(subregion_A);
workingTiles.Parent.CreateGroup(subregion_B);
}
this.RunCallbacks(context);
// Push new subregions to the stack
subregions.Push(new Subregion(subregion_A));
subregions.Push(new Subregion(subregion_B));
} // 4. Repeat 2 and 3 for each subregion
}
/// <summary>
/// Draws the border for tile (x, y) in the specified DungeonTiles,
/// to the specified graphics and rectangle coordinates.
/// </summary>
/// <param name="tiles">The DungeonTiles for which this border is being drawn</param>
/// <param name="x">The x-location of the tile whose border is being drawn</param>
/// <param name="y">The x-location of the tile whose border is being drawn</param>
/// <param name="moveDir">The move direction. Currently supports a single horizontal square direction, or all horizontal square directions, but no other combinations</param>
/// <param name="g">The graphics on which to draw</param>
/// <param name="x1">x1 of the tile's square in graphics.</param>
/// <param name="y1">y1 of the tile's square in graphics.</param>
/// <param name="x2">x2 of the tile's square in graphics.</param>
/// <param name="y2">y2 of the tile's square in graphics.</param>
private void DrawBorderFor(DungeonTiles tiles, int x, int y, Tile.MoveType moveDir, Graphics g, int x1, int y1, int x2, int y2)
{
if (tiles == null || g == null)
{
return; // no op
}
if (!tiles.TileIsValid(x, y))
{
return;
}
int adjacentTile_x = 0,
adjacentTile_y = 0;
// Determine the correct adjacent tile to check physics
switch (moveDir)
{
case Tile.MoveType.Wall:
return; // no op
case Tile.MoveType.Open_NORTH:
adjacentTile_x = x;
adjacentTile_y = y - 1;
break;
case Tile.MoveType.Open_EAST:
adjacentTile_x = x + 1;
adjacentTile_y = y;
break;
case Tile.MoveType.Open_SOUTH:
adjacentTile_x = x;
adjacentTile_y = y + 1;
break;
case Tile.MoveType.Open_WEST:
adjacentTile_x = x - 1;
adjacentTile_y = y;
break;
case Tile.MoveType.Open_HORIZ:
DrawBorderFor(tiles, x, y, Tile.MoveType.Open_NORTH, g, x1, y1, x2, y2);
DrawBorderFor(tiles, x, y, Tile.MoveType.Open_EAST, g, x1, y1, x2, y2);
DrawBorderFor(tiles, x, y, Tile.MoveType.Open_SOUTH, g, x1, y1, x2, y2);
DrawBorderFor(tiles, x, y, Tile.MoveType.Open_WEST, g, x1, y1, x2, y2);
return;
default:
throw new NotImplementedException("Unsupported Tile.MoveType specified");
}
// 1. Check if THIS cell is even open
bool useWall = ((tiles[y, x].Physics & moveDir) == 0);
// 2. Check if adjacent cell exists; if not, use a wall border
useWall = (useWall || !tiles.TileIsValid(adjacentTile_x, adjacentTile_y));
// 3. If adjacent cell exists, check if its corresponding wall is opened too; if not, use a wall border
useWall = (useWall || (tiles[adjacentTile_y, adjacentTile_x].Physics & moveDir.GetOpposite()) == 0);
if (this.WallBorder_Pen == null || this.OpenBorder_Pen == null)
{
throw new Exception("DungeonTileRenderer is in an invalid state: set WallBorder_Pen and OpenBorder_Pen");
}
Pen borderPen = useWall ? this.WallBorder_Pen : this.OpenBorder_Pen;
// All this work, just to draw a single line.
switch (moveDir)
{
case Tile.MoveType.Open_NORTH:
g.DrawLine(borderPen, x1, y1, x2, y1);
break;
case Tile.MoveType.Open_EAST:
g.DrawLine(borderPen, x2, y1, x2, y2);
break;
case Tile.MoveType.Open_SOUTH:
g.DrawLine(borderPen, x1, y2, x2, y2);
break;
case Tile.MoveType.Open_WEST:
g.DrawLine(borderPen, x1, y1, x1, y2);
break;
default:
throw new ArgumentException("Unsupported moveDir to draw border");
}
}