private IEnumerable <CharCoordinate> GetEmptySiblings(CharCoordinate coordinate)
{
var emptyCells = GetEmptyCells();
var emptySiblings = emptyCells.Where(x => x.IsSiblingOf(coordinate)).ToList();
return(emptySiblings);
}
public bool HasEmptySibling(CharCoordinate coordinate)
{
var emptyCells = GetEmptyCells();
var siblingEmptyCells = emptyCells.Where(x => x.IsSiblingOf(coordinate));
return(siblingEmptyCells.Any());
}
public bool IsTrapped(CharCoordinate coordinate, List <CharCoordinate> previouslyUsedPath = null)
{
previouslyUsedPath = previouslyUsedPath ?? new List <CharCoordinate>();
var empty = GetEmptySiblings(coordinate);
var trapped = empty.All(x => previouslyUsedPath.Contains(x));
return(trapped);
}
private CharCoordinate GetRandomEmptySibling(CharCoordinate coordinate, List <CharCoordinate> except = null)
{
except = except ?? new List <CharCoordinate>();
var siblingEmptyCells = GetEmptySiblings(coordinate).Where(x => !except.Contains(x));
var randomIndex = UnityEngine.Random.Range(0, siblingEmptyCells.Count());
var nextSibling = siblingEmptyCells.ElementAt(randomIndex);
return(nextSibling);
}
private List <CharCoordinate> GetEmptyCells()
{
var emptyCells = new List <CharCoordinate>();
for (var i = 0; i < _size; i++)
{
for (var j = 0; j < _size; j++)
{
var current = new CharCoordinate(i, j);
if (IsEmpty(current))
{
emptyCells.Add(current);
}
}
}
return(emptyCells);
}
public char GetCharAt(CharCoordinate coordinate)
{
return(_matrix[coordinate.Row, coordinate.Column]);
}
private bool IsEmpty(CharCoordinate coordinate)
{
return(_matrix[coordinate.Row, coordinate.Column] == '\0');
}
private void SetCharAt(CharCoordinate coordinate, char c)
{
_matrix[coordinate.Row, coordinate.Column] = c;
}
private void DelCharAt(CharCoordinate coordinate)
{
_matrix[coordinate.Row, coordinate.Column] = '\0';
}
