public void ApplyBoard(BoardState boardState)
{
var playedAs = Player.White;
LearnHowToStart(boardState, NeuralNetwork, playedAs);
}
void LearnHowToStart(
BoardState boardState,
NeuralNetwork neuralNetwork,
Player playedAs)
{
var learningRate = .02d;
var stopTraining = false;
for (int a = 0; a < 100; a++)
//while(!stopTraining)
{
var inputs = GetInputsFromBoard(boardState, playedAs);
var outputs = neuralNetwork.ForwardPass(inputs);
var training = new double[outputs.Length];
var error = 0d;
var maxValue = 0d;
BasePiece maxValuePiece = null;
var allAllowedMoves = new List <(int y, int x)>();
//> Populate training data where AI should click first
for (int i = 0; i < outputs.Length / 2; i++)
{
int y = i / 8;
int x = i % 8;
if (boardState.Squares[y, x] != null &&
boardState.Squares[y, x].ControlledBy == playedAs)
{
training[i] = 1;
// For now let's just select all possible moves;
allAllowedMoves.AddRange(boardState.Squares[y, x].GetAllowedMoves(boardState));
//if (outputs[i] > maxValue)
//{
// maxValue = outputs[i];
// maxValuePiece = boardState.Squares[y, x];
//}
}
error += Math.Pow(outputs[i] - training[i], 2);
//error += outputs[i] - training[i];
}
//<
//var allowedMoves = maxValuePiece.GetAllowedMoves(boardState);
//boardState.GetPieceLocation(maxValuePiece)
//> Populate training data where player should click second
for (int i = outputs.Length / 2; i < outputs.Length; i++)
{
int y = (i - outputs.Length / 2) / 8;
int x = i % 8;
//if (allowedMoves.Any(l => l.y == y && l.x == x))
//{
// training[i] = 1;
//}
if (allAllowedMoves.Any(l => l.y == y && l.x == x))
{
training[i] = 1;
}
error += training[i] - outputs[i];
}
//<
error /= 2;
//var error = desiredOutput[randomTrainningIndex] - neuralNetwork.Outputs[neuralNetwork.Outputs.Length - 1][0];
//Console.WriteLine(randomTrainningIndex + "Error: " + error);
Debug.WriteLine("error: " + error);
neuralNetwork.ApplyBackpropagation(training, learningRate);
}
}
static List <KeyValuePair <((int, int), (int, int)), BoardState> > GetPossibleMoves(BoardState state, Player player)
{
var pieces = state.GetPlayerPieces(player);
var piecesMoves = pieces.ToDictionary(p => state.GetPieceLocation(p), p => p.GetAllowedMoves(state));
return(piecesMoves.Select(pieceMoves => pieceMoves.Value.ToDictionary(move => (pieceMoves.Key, move), move =>
{
var shadowState = state.Copy();
shadowState.UpdatePieces(pieceMoves.Key.y, pieceMoves.Key.x);
shadowState.UpdatePieces(move.y, move.x);
return shadowState;
})).SelectMany(_ => _).ToList());
}
