public void LoadNetwork(object sender, EventArgs e)
{
rootGrid.Children.Clear();
rootGrid.Children.Add(Score);
rootGrid.Children.Add(Info);
rootGrid.Children.Add(saveNetButton);
// Create a string to read into
int numWeights = (INPUTS + 1) * HIDDEN + (HIDDEN + 1) * OUTPUTS;
string[] lines = new string[numWeights + 1];
//Initialize networks
for (int i = 0; i < ann.Length; i++)
{
ann[i] = new ANN(INPUTS, HIDDEN, OUTPUTS);
}
//Read file
if (System.IO.File.Exists(netPath))
{
lines = System.IO.File.ReadAllLines(netPath);
}
gen = Convert.ToInt32(lines[2]);
for (int i = 0; i < ann.Length; i++)
{
int ii = 3;
for (int j = 1; j < 3; j++)
{
for (int k = 0; k < ann[i].neuronLayers[j].neuronNum; k++)
{
for (int l = 0; l < ann[i].neuronLayers[j].neurons[k].inputNum + 1; l++)
{
ann[i].neuronLayers[j].neurons[k].weights[l] = Convert.ToDouble(lines[ii]);
ii++;
}
}
}
}
GA.Mutate(ann);
//Start a game
game = new Game(rootGrid, random);
timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(SPEED2);
timer.Tick += delegate { Update(); game.UpdateDisplay(); UpdateDisplay(); };
timer.Start();
KeyDown += AdjustSpeed;
}
void Update()
{
for (int y = 0; y < WIDTH; y++)
{
for (int x = 0; x < WIDTH; x++)
{
prevBoard[x, y] = game.board[x, y];
}
}
//Check each direction to see if it is a legal move
int prevScore = game.score;
double[] outputs = new double[4];
for (int i = 0; i < 4; i++)
{
//Move in a direction
game.Update(i, true);
//Check if legal
bool legal = false;
for (int y = 0; y < WIDTH; y++)
{
for (int x = 0; x < WIDTH; x++)
{
if (prevBoard[x, y] != game.board[x, y])
{
legal = true;
break;
}
}
if (legal)
{
break;
}
}
//If legal, feed to network
if (legal)
{
outputs[i] = ComputeNetwork(ann[c]);
}
else
{
outputs[i] = 0;
}
//Revert game state for next check
game.score = prevScore;
game.board = prevBoard;
}
//Update game with highest output
int highest = 0;
for (int i = 1; i < 4; i++)
{
if (outputs[i] > outputs[highest])
{
highest = i;
}
}
game.Update(highest, false);
if (game.end)
{
ann[c].fitness = game.score;
if (game.score > maxFitness)
{
maxFitness = game.score;
}
c++;
game = null;
rootGrid.Children.Clear();
rootGrid.Children.Add(Info);
rootGrid.Children.Add(Score);
rootGrid.Children.Add(saveNetButton);
game = new Game(rootGrid, random);
}
if (c >= POPULATION)
{
c = 0;
gen++;
//Total fitness
totalFitness = 0;
for (int i = 0; i < POPULATION; i++)
{
totalFitness += ann[i].fitness;
}
avgFitness = totalFitness / POPULATION;
finalMaxFitness = maxFitness;
maxFitness = 0;
Console.Write("gen: " + gen.ToString() + ", avg: " + avgFitness + "\n");
if (gen % 100 == 0)
{
SaveNetwork();
}
GA.Compute(ann);
}
}