public static bool IsAdjoinTerritory(this GameField field, Point point, int player)
{
foreach (Point temp in field.Adjoin(point))
{
if (field[temp].Terrain == Terrain.Hole) continue;
if (field[temp].Terrain == Terrain.Outside) continue;
if (field[temp].Player == player) return true;
}
return false;
}
public static IEnumerable<Point> NearIterator(this GameField field, Point center, int player)
{
bool[,] searched = new bool[field.Width, field.Height];
Queue<Point> queue = new Queue<Point>();
queue.Enqueue(center);
while (queue.Count > 0)
{
Point current = queue.Dequeue();
foreach (Point point in field.Adjoin(current))
{
if (searched[point.X, point.Y]) continue;
if (field.IsInMove(point, field[point].Player == player) && field.IsOutMove(point))
{
queue.Enqueue(point);
searched[point.X, point.Y] = true;
}
}
yield return current;
}
}
public static bool IsLiberate(this GameField field, Point point)
{
int count = 0;
foreach (Point temp in field.Adjoin(point, true))
{
if (field[temp].Terrain != Terrain.Wasteland) return false;
count++;
}
return count >= 7;
}