private int GetNumberOfNeighboursOf(Position position)
{
var neighbours = 0;
for (var i = position.X-1; i <= position.X+1 ; i++)
{
for (var j = position.Y-1; j <= position.Y+1 ; j++)
{
if (IsNeighbour(position, new Position(i,j))) neighbours++;
}
}
return neighbours;
}
public List<Position> GetNeighbours(Position position)
{
var neighboursList = new List<Position>();
for (var i = position.X - 1; i <= position.X + 1; i++)
{
for (var j = position.Y - 1; j <= position.Y + 1; j++)
{
if (this.IsCellAliveAtPosition(new Position(i, j))) neighboursList.Add(new Position(i,j));
}
}
neighboursList.Remove(position);
return neighboursList;
}
private IEnumerable<Position> ReviveNeighboursOf(Position position)
{
var neighbours = new List<Position>();
for (var i = position.X - 1; i <= position.X + 1; i++)
{
for (var j = position.Y - 1; j <= position.Y + 1; j++)
{
if (CellShouldRevive(new Position(i,j))) neighbours.Add(new Position(i, j));
}
}
return neighbours;
}
private bool IsNeighbour(Position position, Position neighbourPosition)
{
return this.IsCellAliveAtPosition(neighbourPosition) && !position.Equals(neighbourPosition);
}
private bool CellShouldRevive(Position position)
{
return !this.IsCellAliveAtPosition(position) && this.GetNumberOfNeighboursOf(position) == 3;
}
public bool IsCellAliveAtPosition(Position position)
{
return CellsList.Contains(position);
}
public void AddCellAtPosition(Position position)
{
CellsList.Add(position);
}
private bool ShouldDie(Position position)
{
var numberOfNeighbours = this.GetNumberOfNeighboursOf(position);
return numberOfNeighbours < 2 || numberOfNeighbours >= 4;
}
private bool ShouldCheckRevive(Position position)
{
return GetNumberOfNeighboursOf(position) == 2;
}
