List <int> Search(List <int> keys, List <Chest> chests, List <List <int> > keyToChest, Visited v, int depth)
{
int hash = v.GetHashCode() & ((1 << VisitedHashLen) - 1);
foreach (var h in VisitedList[hash])
{
if (h == v)
{
return(null);
}
}
VisitedList[hash].Add(v);
VisitedListCount++;
if (VisitedListCount > VisitedListCapacity)
{
for (int i = 0; i < VisitedList.Length; i++)
{
VisitedList[i] = new List <Visited>();
}
}
List <int> nexts = new List <int>();
foreach (var k in keys.Distinct())
{
if (k < keyToChest.Count)
{
nexts.AddRange(keyToChest[k]);
}
}
nexts.Sort();
foreach (var n in nexts)
{
if (v[n] == false)
{
List <int> nkeys = keys.ToList();
nkeys.Remove(chests[n].ToOpen);
nkeys.AddRange(chests[n].Keys);
nkeys.Sort();
Visited nv = v.Clone();
nv[n] = true;
if (depth < chests.Count - 1)
{
List <int> r = Search(nkeys, chests, keyToChest, nv, depth + 1);
if (r != null)
{
r.Insert(0, n + 1);
return(r);
}
}
else
{
return(new List <int> {
n + 1
});
}
}
}
return(null);
}
private static float FindResult(char[,] board, int x, int y, Visited[,] visited, int xSlide, int ySlide, int time, float speed, int reactionTime)
{
if (x >= board.GetLength(0) || x < 0)
return float.MaxValue;
if (y >= board.GetLength(1) || y < 0)
return float.MaxValue;
Visited v = GetFromCoordinates(xSlide, ySlide);
if ((visited[x, y] & v) == v)
{
#if DEBUG
for (int i = 0; i < time; i++)
{
Console.Write(" ");
}
Console.WriteLine("(V) - {2} {0},{1} . - {3} {4} [{5}]", x, y, time, xSlide, ySlide, board[x, y]);
#endif
return float.MaxValue;
}
if (board[x, y] == '#')
return float.MaxValue;
if (board[x, y] == 'O')
{
#if DEBUG
Console.WriteLine("Found it! 0 ");
#endif
return speed;
}
visited = (Visited[,])visited.Clone();
visited[x, y] = visited[x, y] | v;
float result = 0;
#if DEBUG
for (int i = 0; i < time; i++)
{
Console.Write(" ");
}
Console.WriteLine("(B) - {2} {0},{1} . - {3} {4} [{5}]", x, y, time, xSlide, ySlide, board[x, y]);
#endif
int mul = 1;
int newX = 0;
int newY = 0;
bool stopped = true;
if (xSlide != 0 || ySlide != 0)
{
result = speed;
stopped = false;
while (!stopped)
{
newX = x + mul * xSlide;
newY = y + mul * ySlide;
visited[newX, newY] = visited[newX, newY] | GetFromCoordinates(xSlide, ySlide);
#if DEBUG
for (int i = 0; i < time; i++)
{
Console.Write(" ");
}
Console.WriteLine("(S) - {2} {0},{1} . - {3} {4} ({5}) [{6}]",
newX, newY, time, xSlide, ySlide, result,
board[newX, newY]);
#endif
if (board[newX, newY] == 'O')
{
#if DEBUG
Console.WriteLine("Found it! {0} ", result);
#endif
return result + speed;
}
if (board[newX, newY] == '#')
stopped = true;
else
{
result += speed;
mul++;
}
}
}
mul--;
//Debug!
float sum = result;
#if DEBUG
Console.WriteLine(sum);
#endif
x = x + mul * xSlide;
y = y + mul * ySlide;
if (stopped)
{
sum += reactionTime;
}
float[] results =
{
FindResult(board, x + 1, y, visited, 1, 0, time + 1, speed, reactionTime),
FindResult(board, x - 1, y, visited, -1, 0, time + 1, speed, reactionTime),
FindResult(board, x, y - 1, visited, 0, -1, time + 1, speed, reactionTime),
FindResult(board, x, y + 1, visited, 0, 1, time + 1, speed, reactionTime),
};
float min = results.Min();
#if DEBUG
if (min < float.MaxValue)
{
for (int i = 0; i < time; i++)
{
Console.Write(" ");
}
Console.WriteLine("(E) - {2} {0},{1} . - {3} {4} [{5}]", x, y, time, xSlide, ySlide, sum + min);
}
#endif
return sum + min;
}
