/// <summary>
/// Copies tiles from a given room template to given destination tilemaps.
/// </summary>
/// <remarks>
/// One important aspect of this method is how to handle already existing tiles in destination tilemaps.
///
/// When deleteNonNullTiles is true, it computes all non-null positions across all layers in the room template.
/// After that, it deletes all tiles on these positions in destination tilemaps.
///
/// When deleteTilesInsideOutline is true, it computes all tiles inside the outline of the room template and
/// deletes them from the destination tilemaps.
/// So even if there is a hole inside the room template, the position is still removed.
///
/// deleteNonNullTiles and deleteTilesInsideOutline can be combined together.
/// </remarks>
/// <param name="roomInstance">Room instance to be copied to the destination tilemaps.</param>
/// <param name="destinationTilemaps">List of destination tilemaps.</param>
/// <param name="deleteNonNullTiles">Whether to delete non-null tiles from destination tilemaps.</param>
/// <param name="deleteTilesInsideOutline">Whether to delete all tiles insides the outline from destination tilemaps.</param>
public static void CopyTiles(RoomInstance roomInstance, List <Tilemap> destinationTilemaps, bool deleteNonNullTiles, bool deleteTilesInsideOutline)
{
var sourceTilemaps = RoomTemplateUtilsGrid2D.GetTilemaps(roomInstance.RoomTemplateInstance);
sourceTilemaps = RoomTemplateUtilsGrid2D.GetTilemapsForCopying(sourceTilemaps);
var tilesToRemove = new List <Vector3Int>();
if (deleteNonNullTiles)
{
var tiles = GetNonNullTiles(sourceTilemaps);
tilesToRemove.AddRange(tiles.Select(x => x + roomInstance.Position));
}
if (deleteTilesInsideOutline)
{
var tiles = GetTilesInsideOutline(roomInstance, false);
tilesToRemove.AddRange(tiles);
}
RemoveTiles(destinationTilemaps, tilesToRemove);
foreach (var sourceTilemap in sourceTilemaps)
{
var destinationTilemap = destinationTilemaps.FirstOrDefault(x => x.name == sourceTilemap.name);
if (destinationTilemap == null)
{
continue;
}
foreach (var tilemapPosition in sourceTilemap.cellBounds.allPositionsWithin)
{
var tile = sourceTilemap.GetTile(tilemapPosition);
if (tile != null)
{
destinationTilemap.SetTile(tilemapPosition + roomInstance.Position, tile);
destinationTilemap.SetTransformMatrix(tilemapPosition + roomInstance.Position, sourceTilemap.GetTransformMatrix(tilemapPosition));
}
}
}
}
/// <summary>
/// Gets tilemaps that should be used when copying room template tiles to shared tilemaps.
/// </summary>
/// <param name="tilemaps"></param>
/// <returns></returns>
public static List <Tilemap> GetTilemapsForCopying(ICollection <Tilemap> tilemaps)
{
return(RoomTemplateUtilsGrid2D.GetTilemapsForCopying(tilemaps));
}