/// <summary>
/// Gets a chain of tiles that fullfill the matching condition along a given direction.
/// </summary>
/// <param name="startCoordinates">coordinates of the startTile</param>
/// <param name="direction">search direction(s)</param>
/// <param name="matchingCondition">matching condition</param>
/// <param name="excludeStartTile">whether the tile at start coordinates should be included or excluded</param>
/// <returns>number of consecutive tiles that fullfill the matching condition</returns>
public List <BoardTile> GetMatchingChainInDirection(Vector2Int startCoordinates, Direction direction, System.Predicate <BoardTile> matchingCondition, bool excludeStartTile = false)
{
List <BoardTile> matchingTiles = new List <BoardTile>();
if (excludeStartTile || matchingCondition(GetTileAt(startCoordinates)))
{
if (!excludeStartTile)
{
matchingTiles.Add(GetTileAt(startCoordinates));
}
foreach (Vector2Int directionVector in DirectionHelper.DirectionToVectors(direction))
{
Vector2Int searchCoordinates = startCoordinates + directionVector;
while (searchCoordinates.IsBetween(Vector2Int.zero, Dimensions) && matchingCondition(GetTileAt(searchCoordinates)))
{
matchingTiles.Add(GetTileAt(searchCoordinates));
searchCoordinates += directionVector;
}
}
}
return(matchingTiles);
}
