/// <summary>
/// Prepares the specified <see cref="Tilemap"/> for user editing using the specified size.
/// </summary>
/// <param name="tilemap"></param>
/// <param name="tilesetRef"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="isUpperLayer"></param>
public static void SetupTilemap(Tilemap tilemap, ContentRef<Tileset> tilesetRef, int width, int height, bool isUpperLayer)
{
Tileset tileset = tilesetRef.Res;
// Determine the first tile index that matches the layer type.
int fillTileIndex = GetDefaultTileIndex(tileset, isUpperLayer);
// Resize the Tilemap and fill it with the first visually non-empty tile.
tilemap.Tileset = tileset;
tilemap.Resize(width, height);
tilemap.BeginUpdateTiles().Fill(
new Tile(fillTileIndex),
0,
0,
tilemap.Size.X,
tilemap.Size.Y);
tilemap.EndUpdateTiles();
}
/// <summary>
/// Runs the flood fill algorithm on the specified position and writes the result into the specified variables.
/// </summary>
/// <param name="tilemap"></param>
/// <param name="pos"></param>
/// <param name="preview">If true, the algorithm will cancel when taking too long for an interactive preview.</param>
/// <param name="floodFillArea"></param>
/// <param name="floodFillOrigin"></param>
/// <returns>True, if the algorithm completed. False, if it was canceled.</returns>
public bool GetFillArea(Tilemap tilemap, Point2 pos, bool preview, Grid <bool> floodFillArea, ref Point2 floodFillOrigin)
{
Grid <Tile> tiles = tilemap.BeginUpdateTiles();
Point2 fillTopLeft;
Point2 fillSize;
bool success = this.FillArea(ref this.activeFillBuffer, tiles, pos, preview ? (128 * 128) : 0, out fillTopLeft, out fillSize);
tilemap.EndUpdateTiles(0, 0, 0, 0);
// Find the filled areas boundaries and copy it to the active area
if (success)
{
floodFillOrigin = fillTopLeft;
floodFillArea.ResizeClear(fillSize.X, fillSize.Y);
this.activeFillBuffer.CopyTo(floodFillArea, 0, 0, -1, -1, floodFillOrigin.X, floodFillOrigin.Y);
}
return(success);
}
/// <summary>
/// Runs the flood fill algorithm on the specified position and writes the result into the specified variables.
/// </summary>
/// <param name="tilemap"></param>
/// <param name="pos"></param>
/// <param name="preview">If true, the algorithm will cancel when taking too long for an interactive preview.</param>
/// <param name="floodFillArea"></param>
/// <param name="floodFillOrigin"></param>
/// <returns>True, if the algorithm completed. False, if it was canceled.</returns>
private bool GetFloodFillArea(Tilemap tilemap, Point2 pos, bool preview, Grid<bool> floodFillArea, ref Point2 floodFillOrigin)
{
Grid<Tile> tiles = tilemap.BeginUpdateTiles();
Point2 fillTopLeft;
Point2 fillSize;
bool success = FloodFillTiles(ref this.activeFillBuffer, tiles, pos, preview ? (128 * 128) : 0, out fillTopLeft, out fillSize);
tilemap.EndUpdateTiles(0, 0, 0, 0);
// Find the filled areas boundaries and copy it to the active area
if (success)
{
floodFillOrigin = fillTopLeft;
floodFillArea.ResizeClear(fillSize.X, fillSize.Y);
this.activeFillBuffer.CopyTo(floodFillArea, 0, 0, -1, -1, floodFillOrigin.X, floodFillOrigin.Y);
}
return success;
}
