private Dictionary<Tile, object> paintTilesAdjacentTo(Tile startTile)
{
Dictionary<Tile, object> visitedTiles = new Dictionary<Tile, object>();
Stack<Tile> tileStack = new Stack<Tile>();
tileStack.Push(startTile);
visitedTiles.Add(startTile, null);
while (tileStack.Count > 0)
{
Tile tile = tileStack.Pop();
addIfPossible(visitedTiles, tileStack, tile.Position.X - 1, tile.Position.Y);
addIfPossible(visitedTiles, tileStack, tile.Position.X + 1, tile.Position.Y);
addIfPossible(visitedTiles, tileStack, tile.Position.X, tile.Position.Y - 1);
addIfPossible(visitedTiles, tileStack, tile.Position.X, tile.Position.Y + 1);
}
return visitedTiles;
}
private Tile getExpandingTile(int x, int y)
{
tileGrid.containCoordinate(x, y);
Tile t = tileGrid.get(x, y);
if (t == null)
{
t = new Tile(water);
t.Position = new Point(x, y);
tileGrid.set(x, y, t);
}
return t;
}
private bool isWalkableTerrain(Tile t)
{
return isWalkableTerrain(t.Terrain);
}
public Tile getTile(int x, int y)
{
if (!tileGrid.containsCoordinate(x, y))
{
Tile t = new Tile(water);
t.Position = new Point(x, y);
return t;
}
return getExpandingTile(x, y);
}