public Tileset(Tile[][] tiles, Texture tex)
{
this.tiles = tiles;
this.tex = tex;
Reload();
}
private void GenerateTiles(int x, int y)
{
Tile[][] tiles = new Tile[x][];
for (int i = 0; i < tiles.Length; i++)
tiles[i] = new Tile[y];
for (int i = 0; i < x; i++)
{
for (int j = 0; j < y; j++)
{
if (j == 0 || j == y - 1 || i == 0 || i == x - 1)
{
tiles[i][j] = new Tile(new Point(i, j), 4, 4, TileType.Wall);
}
else
tiles[i][j] = new Tile(new Point(i, j), 4, 4, TileType.Floor);
}
}
level.Tileset = new Tileset(tiles, Resources.Textures["tilesetworld.png"]);
}
public static void setInitialTileOffset(Tile tile, Point p, int length, int width)
{
tile.Position = new Vector2(-(float)width / 2 * Tile.SIZE_F + p.X * Tile.SIZE_F + Tile.SIZE_F / 2, (float)length / 2 * Tile.SIZE_F - p.Y * Tile.SIZE_F - Tile.SIZE_F / 2);
}
/**
* Calculates the bordering tile bitfield.
* A tile is considered a "bordering tile" of a given tile if it meets the following criteria:
* <ul>
* <li> The bordering tile shares an edge or vertex with the given tile.</li>
* <li> The bordering tile is not of the same type as the given tile.</li>
* </ul>
* The result of this method is stored as a byte. Each potential bordering tile is represented as a flag in a bitfield.
* The flags are defined as follows:
* \verbatim
* +------+------+------+
* | | | |
* | 0x01 | 0x02 | 0x04 |
* | | | |
* +------+------+------+
* | | | |
* | 0x08 | | 0x10 |
* | | | |
* +------+------+------+
* | | | |
* | 0x20 | 0x40 | 0x80 |
* | | | |
* +------+------+------+
* \endverbatim
* @param tileset The tileset that contains this tile.
*/
public void calculateBorders(Tile[][] tileset)
{
int x = tilesetPos.X;
int y = tilesetPos.Y;
//store all the bordering tile indices in top left to bottom right order.
List<Point> points = new List<Point>();
points.Add(new Point(x - 1, y - 1));
points.Add(new Point(x, y - 1));
points.Add(new Point(x + 1, y - 1));
points.Add(new Point(x - 1, y));
points.Add(new Point(x + 1, y));
points.Add(new Point(x - 1, y + 1));
points.Add(new Point(x, y + 1));
points.Add(new Point(x + 1, y + 1));
//check each of the bordering tiles, set it's corresponding bit to 1 if it's not the same type of tile.
for (int i = 0; i < points.Count; i++)
{
Point p = points[i];
//make sure tileset index is within tileset bounds
if (p.X >= 0 && p.X < tileset[0].Length && p.Y >= 0 && p.Y < tileset.Length)
{
Tile t = tileset[p.Y][p.X];
//if the tile type is not the same, it's considered a bordering tile.
if (t != null && t.getTileType() != type)
borders |= (byte)(0x01 << i);
}
}
}
