public Tile AttachToTile(Tile tile, int fromDir)
{
tile.attachTile(this, fromDir);
neighbours[(fromDir + 2) % 4] = tile;
blocks[(fromDir + 2) % 4] = tile.GetBlock(fromDir);
return this;
}
private int test2(Tile tile, int dir1, int dir2, int value)
{
if (!tile.IsPath(dir1) || !tile.IsPath(dir2)) return value;
if (!tile.GetNeighbour(dir1).IsPath(dir2)) return value;
if (!tile.GetNeighbour(dir2).IsPath(dir1)) return value;
return 0;
}
public ChangeInternalResize(int dir, int size, Tile[,] tiles)
: base(ChangeType.InternalResize)
{
Dir = dir;
Size = size;
Tiles = tiles;
if (dir != Directions.North) StopUndo = false;
if (dir != Directions.West) StopRedo = false;
}
/// <summary>
/// Resize the map instance.
/// </summary>
/// <param name="n">Number or rows to be added to or removed from the north side</param>
/// <param name="e">Number or columns to be added to or removed from the east side</param>
/// <param name="s">Number or rows to be added to or removed from the south side</param>
/// <param name="w">Number or columns to be added to or removed from the west side</param>
public void Resize(int n, int e, int s, int w)
{
if (-n >= Height || -s >= Height || -e >= Width || -w >= Width) return;
if (-(n + s) >= Height || -(e + w) >= Width) return;
Tile[,] cutTiles;
if (n < 0)
{
cutTiles = new Tile[Width, -n];
for (int x = 0; x < Width; x++)
for (int y = 0; y < -n; y++)
cutTiles[x, y] = tiles[x, y];
}
else cutTiles = null;
ChangeInternalResize ch = new ChangeInternalResize(Directions.North, n, cutTiles);
apply(ch);
if (e < 0)
{
cutTiles = new Tile[-e, Height];
for (int x = Width + e; x < Width; x++)
for (int y = 0; y < Height; y++)
cutTiles[x - (Width + e), y] = tiles[x, y];
}
else cutTiles = null;
ch = new ChangeInternalResize(Directions.East, e, cutTiles);
apply(ch);
if (s < 0)
{
cutTiles = new Tile[Width, -s];
for (int x = 0; x < Width; x++)
for (int y = Height + s; y < Height; y++)
cutTiles[x, y - (Height + s)] = tiles[x, y];
}
else cutTiles = null;
ch = new ChangeInternalResize(Directions.South, s, cutTiles);
apply(ch);
if (w < 0)
{
cutTiles = new Tile[-w, Height];
for (int x = 0; x < -w; x++)
for (int y = 0; y < Height; y++)
cutTiles[x, y] = tiles[x, y];
}
else cutTiles = null;
ch = new ChangeInternalResize(Directions.West, w, cutTiles);
apply(ch);
FullRedraw();
}
public int GetTileHash(Tile tile)
{
int hash = 0;
hash += test2(tile, Directions.South, Directions.East, b(0));
hash += test(tile, Directions.South, b(1));
hash += test2(tile, Directions.South, Directions.West, b(2));
hash += test(tile, Directions.East, b(3));
hash += test(tile, Directions.West, b(4));
hash += test2(tile, Directions.North, Directions.East, b(5));
hash += test(tile, Directions.North, b(6));
hash += test2(tile, Directions.North, Directions.West, b(7));
return hash;
}
public int GetTileCorridorHash(Tile tile)
{
int tHash = GetTileHash(tile);
int hash = 0;
// vertical at corners
hash += ctest2(tHash, b(6), b(7), b(0));
hash += ctest2(tHash, b(6), b(5), b(1));
hash += ctest2(tHash, b(1), b(2), b(2));
hash += ctest2(tHash, b(1), b(0), b(3));
// horizontal at corners
hash += ctest2(tHash, b(4), b(7), b(4));
hash += ctest2(tHash, b(3), b(5), b(5));
hash += ctest2(tHash, b(4), b(2), b(6));
hash += ctest2(tHash, b(3), b(0), b(7));
// vertical
hash += ctest(tHash, b(4), b(8));
hash += ctest(tHash, b(3), b(9));
hash += ctest(tHash, b(6), b(10));
hash += ctest(tHash, b(1), b(11));
return hash;
}
protected void attachTile(Tile tile, int fromDir)
{
neighbours[fromDir] = tile;
}
private int test(Tile tile, int dir, int value)
{
if (tile.IsPath(dir)) return 0;
return value;
}
private void undoWestResize(ChangeInternalResize ch)
{
int size = ch.Size;
Tile[,] newTiles = new Tile[Width - size, Height];
if (size > 0)
{
for (int x = size; x < Width; x++)
for (int y = 0; y < Height; y++)
newTiles[x - size, y] = tiles[x, y];
for (int y = 0; y < Height; y++)
newTiles[0, y].DropTile(Directions.West);
}
else
{
for (int x = -size; x < Width - size; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = tiles[x + size, y];
Tile[,] oldTiles = ch.Tiles;
for (int x = 0; x < -size; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = oldTiles[x, y];
joinTiles(newTiles, Width - size, Height);
for (int y = 0; y < Height; y++)
newTiles[-size - 1, y].AttachToTile(newTiles[-size, y], Directions.West);
}
tiles = newTiles;
Width -= size;
fixScrollblockers(-size, 0);
reattachScrollBlockers();
}
private void undoSouthResize(ChangeInternalResize ch)
{
int size = ch.Size;
Tile[,] newTiles = new Tile[Width, Height - size];
if (size > 0)
{
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height - size; y++)
newTiles[x, y] = tiles[x, y];
for (int x = 0; x < Width; x++)
newTiles[x, Height - size - 1].DropTile(Directions.South);
}
else
{
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = tiles[x, y];
Tile[,] oldTiles = ch.Tiles;
for (int x = 0; x < Width; x++)
for (int y = 0; y < -size; y++)
newTiles[x, Height + y] = oldTiles[x, y];
joinTiles(newTiles, Width, Height - size);
for (int x = 0; x < Width; x++)
newTiles[x, Height].AttachToTile(newTiles[x, Height - 1], Directions.South);
}
tiles = newTiles;
Height -= size;
fixScrollblockers(0, 0);
reattachScrollBlockers();
}
private void redoNorthResize(ChangeInternalResize ch)
{
int size = ch.Size;
Tile[,] newTiles = new Tile[Width, Height + size];
if (size > 0)
{
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y + size] = tiles[x, y];
for (int x = 0; x < Width; x++)
for (int y = 0; y < size; y++)
newTiles[x, y] = new Tile();
joinTiles(newTiles, Width, Height + size);
for (int x = 0; x < Width; x++)
newTiles[x, size - 1].AttachToTile(newTiles[x, size], Directions.North);
}
else
{
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height + size; y++)
newTiles[x, y] = tiles[x, y - size];
for (int x = 0; x < Width; x++)
newTiles[x, 0].DropTile(Directions.North);
}
tiles = newTiles;
Height += size;
fixScrollblockers(0, size);
}
private void redoEastResize(ChangeInternalResize ch)
{
int size = ch.Size;
Tile[,] newTiles = new Tile[Width + size, Height];
if (size > 0)
{
for (int x = 0; x < Width; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = tiles[x, y];
for (int x = Width; x < Width + size; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = new Tile();
joinTiles(newTiles, Width + size, Height);
for (int y = 0; y < Height; y++)
newTiles[Width - 1, y].AttachToTile(newTiles[Width, y], Directions.East);
}
else
{
for (int x = 0; x < Width + size; x++)
for (int y = 0; y < Height; y++)
newTiles[x, y] = tiles[x, y];
for (int y = 0; y < Height; y++)
newTiles[Width + size - 1, y].DropTile(Directions.East);
}
tiles = newTiles;
Width += size;
fixScrollblockers(0, 0);
}
private static Tile[,] makeTiles(int width, int height)
{
Tile[,] tiles = new Tile[width, height];
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
tiles[x, y] = new Tile(0, false);
if (x > 0) tiles[x, y].AttachToTile(tiles[x - 1, y], Directions.East);
if (y > 0) tiles[x, y].AttachToTile(tiles[x, y - 1], Directions.South);
}
return tiles;
}
private static void joinTiles(Tile[,] tiles, int width, int height)
{
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
if (x > 0) tiles[x, y].AttachToTile(tiles[x - 1, y], Directions.East);
if (y > 0) tiles[x, y].AttachToTile(tiles[x, y - 1], Directions.South);
}
}