// !VIKTIG!! Returnere liste med "moves"
public static void Run(Node start, int fMax)
{
Random rnd = new Random();
double q = 0;
double p = 0;
//1.Begin at a start point P (either user-selected or randomly-generated).
Node currentNode = start;
Node bestNode = currentNode;
GenerateNeghbors(currentNode);
//2.Set the temperature, T, to its starting value: Tmax
double t = 100000;
double dT = 0.5;
//3. Evaluate P with an objective function, F. This yields the value F(P).
//double score = startPoint.ObjectiveFunctionValue;
//4. If F(P) ≥ Ftarget then EXIT and return P as the solution; else continue.
Console.WriteLine("Current node Objective: " + currentNode.ObjectiveFunctionValue );
Console.WriteLine("fMax : " + fMax);
while(!(currentNode.ObjectiveFunctionValue >= fMax) && (t > 0))
{
//5. Generate n neighbors of P in the search space: (P1, P2, ..., Pn).
List<Node> neighbors = GenerateNeghbors(currentNode);
//6. Evaluate each neighbor, yielding (F(P1), F(P2), ..., F(Pn)).
//7. Let Pmax be the neighbor with the highest evaluation.
Node bestNeighbor = neighbors.ElementAt(0);
foreach (Node neigbhor in neighbors)
{
if (neigbhor.ObjectiveFunctionValue > bestNeighbor.ObjectiveFunctionValue)
{
bestNeighbor = neigbhor;
}
}
/* VIKTIG!!!
if (bestNeighbor.ObjectiveFunctionValue > bestNode.ObjectiveFunctionValue)
{
bestNode.ObjectiveFunctionValue = bestNeighbor.ObjectiveFunctionValue;
}
*/
//8. Let q = (F(Pmax )−F(P)) / F(P)
q = (bestNeighbor.ObjectiveFunctionValue - currentNode.ObjectiveFunctionValue) / (currentNode.ObjectiveFunctionValue);
//9. Let p = min h 1, e−qTi
p = Min(1, Math.Pow(Math.E, ((-q)/t)));
//10. Generate x, a random real number in the closed range [0, 1].
double x = rnd.NextDouble();
currentNode = bestNeighbor;
//11. If x > p then P ← Pmax ;; ( Exploiting )
if (x > p)
{
currentNode = bestNeighbor;
}
//12. else P ← a random choice among the n neighbors. ;; (Exploring)
else
{
currentNode = neighbors.ElementAt(rnd.Next(neighbors.Count()));
}
//13. T ← T − dT
t -= dT;
//Console.WriteLine(currentNode);
//14. GOTO Step 4
}
Console.WriteLine(currentNode + "\nNumber of eggs: " + currentNode.Board.CountEggs());
}
private static List<Node> GenerateNeghbors(Node node)
{
Random rnd = new Random();
List<Node> neighbors = new List<Node>();
int[][] board = node.Board.EggCarton;
int[] validMoves = { -1, 0, 1 };
int counterNeighbors = 0;
while (counterNeighbors <= NEIGHBOR_AMOUNT)
{
int[][] tempBoard = new int[board.Length][]; // Copy of the board that is beeing changed
//Array.Copy(board, 0, tempBoard, 0, board.Length);
for (int i = 0; i < board.Length; i++)
{
List<int> temp = new List<int>();
for (int j = 0; j < node.Board.N; j++)
{
temp.Add(node.Board.EggCarton[i][j]);
}
tempBoard[i] = temp.ToArray();
}
int randomM = rnd.Next(3); // Movement row
int randomN = rnd.Next(3); // Movement column
#region
//int randomNumberOfEggsToSkip = rnd.Next(node.Board.CountEggs() - 1);
//int count = 0; // Number of eggs we have skipped
//Console.WriteLine(randomM + " ______________sdfsdfsdf_______________ " + randomN);
/*
for (int m = 0; m < node.Board.M; m++)
{
for (int n = 0; n < node.Board.N; n++)
{
if (board[m][n] == 1)
{
if (((m + validMoves[randomM]) >= 0 && (m + validMoves[randomM]) < node.Board.M) &&
((n + validMoves[randomN]) >= 0 && (n + validMoves[randomN]) < node.Board.N))
{
tempBoard[m + validMoves[randomM]][n + validMoves[randomN]] = 1;
if (!(randomM == 1 && randomN == 1))
tempBoard[m][n] = 0;
int randInsertM = rnd.Next(node.Board.M);
int randInsertN = rnd.Next(node.Board.N);
//tempBoard[randInsertM][randInsertN] = 1;
}
}
Console.WriteLine(DebugPrint(tempBoard));
}
}
*/
#endregion
int randInsertM1 = rnd.Next(node.Board.M);
int randInsertN1 = rnd.Next(node.Board.N);
int randInsertM2 = rnd.Next(node.Board.M);
int randInsertN2 = rnd.Next(node.Board.N);
int randSelect = rnd.Next(2);
//if (randSelect == 1)
tempBoard[randInsertM1][randInsertN1] = 1;
//else
tempBoard[randInsertM2][randInsertN2] = 0;
//Console.WriteLine(DebugPrint(tempBoard));
Board b = new Board(node.Board.M, node.Board.N, node.Board.K);
b.EggCarton = tempBoard;
if (b.IsValidBoard())
{
neighbors.Add(new Node((b)));
counterNeighbors++;
}
}
return neighbors;
}
