private void Reset()
{
Random rnd = new Random();
if (currentGameState == GameState.NeuralNet)
{
currentlyFlying = populationSize;
landingPosition = new Vector2(rnd.Next(Content.Load <Texture2D>("landing pad").Width / 2, graphics.PreferredBackBufferWidth - (Content.Load <Texture2D>("landing pad").Width / 2)), graphics.PreferredBackBufferHeight - 200);
boosterList = ANN.BreedNewGeneration(boosterList, initParams, eliteIndividuals, crossoverRate, crossover1Section, crossover2Section, mutationRate, numNewIndividuals, numEliteChildren);
}
else if (currentGameState == GameState.PlayerControlled)
{
boosterList.Clear();
boosterList.AddBooster(Content.Load <Texture2D>("booster"), (Vector2)initParams[0], (Vector2)initParams[1], (float)initParams[2], (float)initParams[3], (float)initParams[4], (float)initParams[5]);
}
generationComplete = false;
}
public static BoosterList BreedNewGeneration(BoosterList currentGen, object[] initParams, int eliteIndividuals, float crossoverRate, int[] crossover1Section, int[] crossover2Section, float mutationRate, int numNewIndividuals, int numEliteChildren)
{
Random rnd = new Random(DateTime.Now.Millisecond);
BoosterList newGeneration = new BoosterList();
currentGen.Sort((a, b) => b.GetGameScore().CompareTo(a.GetGameScore()));
for (int i = 0; i < eliteIndividuals; i++)
{
Booster elite = currentGen[i];
Debug.Print("Elite individual " + (i + 1) + " landed with a position of " + elite.GetBoosterPosition().X + ", a y-velocity of " + elite.GetBoosterVelocity().Y +
", a rotation of " + elite.GetBoosterRotation() + ", with " + elite.GetFuel() + " fuel left and " + elite.GetMonopropellant() + " mono left, with a score of " + elite.GetGameScore() +
"and weights1 of " + elite.GetWeights1()[0, 0] + ", " + elite.GetWeights1()[0, 1] + ", " + elite.GetWeights1()[0, 2] + ", " + elite.GetWeights1()[0, 3] + ", " + elite.GetWeights1()[0, 4]);
newGeneration.AddBooster(elite.GetBoosterTexture(), (Vector2)initParams[0], (Vector2)initParams[1], (float)initParams[2], (float)initParams[3], (float)initParams[4], (float)initParams[5], elite.GetWeights1(), elite.GetWeights2());
newGeneration[i].ChangeTint(Color.Blue);
newGeneration[i].ChangeLayerDepth(0f);
}
for (int i = 0; i < (numEliteChildren / eliteIndividuals); i++)
{
for (int j = 0; j < eliteIndividuals; j++)
{
newGeneration.AddRange(CreateChildren(rnd, currentGen, newGeneration[j], RouletteSelection(rnd, currentGen), initParams, crossoverRate, crossover1Section, crossover2Section, mutationRate));
}
}
for (int i = eliteIndividuals; i < numEliteChildren; i++)
{
newGeneration[i].ChangeTint(Color.Purple);
newGeneration[i].ChangeLayerDepth(0.1f);
}
while (newGeneration.Count() < (currentGen.Count() - numNewIndividuals))
{
newGeneration.AddRange(CreateChildren(rnd, currentGen, RouletteSelection(rnd, currentGen), RouletteSelection(rnd, currentGen), initParams, crossoverRate, crossover1Section, crossover2Section, mutationRate));
}
while (newGeneration.Count() < currentGen.Count())
{
newGeneration.AddBooster(newGeneration[0].GetBoosterTexture(), (Vector2)initParams[0], (Vector2)initParams[1], (float)initParams[2], (float)initParams[3], (float)initParams[4], (float)initParams[5]);
newGeneration[newGeneration.Count() - 1].ChangeTint(Color.Yellow);
newGeneration[newGeneration.Count() - 1].ChangeLayerDepth(0.2f);
}
return(newGeneration);
}
private static BoosterList CreateChildren(Random rnd, BoosterList currentGen, Booster parent1, Booster parent2, object[] initParams, float crossoverRate, int[] crossover1Section, int[] crossover2Section, float mutationRate)
{
BoosterList children = new BoosterList();
double[,] child1Weights1 = accord.Matrix.Copy(parent1.GetWeights1());
double[,] child1Weights2 = accord.Matrix.Copy(parent1.GetWeights2());
double[,] child2Weights1 = accord.Matrix.Copy(parent2.GetWeights1());
double[,] child2Weights2 = accord.Matrix.Copy(parent2.GetWeights2());
double[,] temp;
if (rnd.NextDouble() <= crossoverRate)
{
temp = accord.Matrix.Copy(child1Weights1);
for (int i = crossover1Section[0]; i <= crossover1Section[1]; i++)
{
for (int j = crossover1Section[2]; j <= crossover1Section[3]; j++)
{
child1Weights1[i, j] = child2Weights1[i, j];
child2Weights1[i, j] = temp[i, j];
}
}
temp = accord.Matrix.Copy(child1Weights2);
for (int i = 0; i < accord.Matrix.Rows(child1Weights2); i++)
{
for (int j = 0; j < accord.Matrix.Columns(child1Weights2); j++)
{
child1Weights2[i, j] = child2Weights2[i, j];
child2Weights2[i, j] = temp[i, j];
}
}
}
child1Weights1 = MutateMatrix(rnd, child1Weights1, mutationRate);
child1Weights2 = MutateMatrix(rnd, child1Weights2, mutationRate);
child2Weights1 = MutateMatrix(rnd, child2Weights1, mutationRate);
child2Weights2 = MutateMatrix(rnd, child2Weights2, mutationRate);
children.AddBooster(parent1.GetBoosterTexture(), (Vector2)initParams[0], (Vector2)initParams[1], (float)initParams[2], (float)initParams[3], (float)initParams[4], (float)initParams[5], child1Weights1, child1Weights2);
children.AddBooster(parent2.GetBoosterTexture(), (Vector2)initParams[0], (Vector2)initParams[1], (float)initParams[2], (float)initParams[3], (float)initParams[4], (float)initParams[5], child2Weights1, child2Weights2);
return(children);
}
