private double GetMaxQ(VirusBoard state)
{
double max = -10;
Move[] actions = state.GetPossibleMoves(playerNumber);
foreach (Move a in actions)
{
double value = 0;
if (!Q[state].ContainsKey(a))
{
value = 0;
}
else
{
value = Q[state][a];
}
if (value > max)
{
max = value;
}
}
if (Q[state].ContainsKey(default(Move)))
{
if (Q[state][default(Move)] > max)
{
max = Q[state][default(Move)];
}
}
return(max);
}
private Move GetMaxExplorationFunctionA(VirusBoard state)
{
double max = -10;
Move action = default(Move);
Move[] actions = state.GetPossibleMoves(playerNumber);
foreach (Move a in actions)
{
double value = 0;
if (!Q.ContainsKey(state))
{
Q.Add(state, new Dictionary <Move, double>());
}
if (Q[state].ContainsKey(a))
{
value = Q[state][a] + 1 / (double)N[state][a];
}
else
{
value = 1;
}
if (value > max)
{
max = value;
action = a;
}
}
return(action);
}
public override void EndGame(Virus percept)
{
Move(percept);
prevState = default(VirusBoard);
prevAction = default(Move);
prevReward = 0;
}
public VirusMemory(VirusBoard start, Move action, VirusBoard end, double reward)
{
StartState = start;
Action = action;
EndState = end;
Reward = reward;
}
private double GetMaxQ(VirusBoard state)
{
double max = -10;
Move[] actions = state.GetPossibleMoves(playerNumber);
foreach (Move a in actions)
{
double value = 0;
if (!Q[state.CustomHash()].ContainsKey(a.CustomHash()))
{
value = 0;
}
else
{
value = Q[state.CustomHash()][a.CustomHash()];
}
if (value > max)
{
max = value;
}
}
if (Q[state.CustomHash()].ContainsKey(0))
{
if (Q[state.CustomHash()][0] > max)
{
max = Q[state.CustomHash()][0];
}
}
return(max);
}
public override Move Move(Virus percept)
{
VirusBoard currentState = percept.GetBoardCopy();
Move[] actions = currentState.GetPossibleMoves(playerNumber);
Move action = actions[0];
double max = double.NegativeInfinity;
foreach (Move a in actions)
{
VirusBoard newState = currentState.GetUpdated(a);
double q = 0;
if (Q.ContainsKey(currentState.CustomHash()))
{
if (Q[currentState.CustomHash()].ContainsKey(a.CustomHash()))
{
q = Q[currentState.CustomHash()][a.CustomHash()];
}
}
q += MinValue(newState, 0);
if (q > max)
{
max = q;
action = a;
}
if (max == 1)
{
break;
}
}
return(action);
}
public VirusMemory(VirusBoard start, Move action, VirusBoard end)
{
StartState = start;
Action = action;
EndState = end;
Reward = VirusNameSpace.Agents.MemoryQAgent.Reward(start, end);
}
public override Move Move(Virus percept)
{
//Stopwatch watch = new Stopwatch();
//watch.Start();
VirusBoard currentState = percept.GetBoardCopy();
Move[] actions = currentState.GetPossibleMoves(playerNumber);
Move action = actions[0];
double max = double.NegativeInfinity;
foreach (Move a in actions)
{
VirusBoard newState = currentState.GetUpdated(a);
double q = Utility(currentState, newState);
q += MinValue(newState, 0);
if (q > max)
{
max = q;
action = a;
}
if (max == double.PositiveInfinity)
{
break;
}
}
//watch.Stop();
//StreamWriter timeWriter = new StreamWriter("mmTimeLog",true);
//timeWriter.WriteLine(watch.ElapsedMilliseconds); // + " ; " + watch.ElapsedTicks);
//timeWriter.Close();
return(action);
}
public override Move Move(Virus percept)
{
VirusBoard state = percept.GetBoardCopy();
Move[] actions = state.GetPossibleMoves(playerNumber);
if (actions.Length < 1)
{
return(default(Move));
}
Move action;
if (random.NextDouble() > randomRatio) // bruteforce
{
List <Move> list = new List <Move>();
int maxtaken = -1;
foreach (Move a in actions)
{
int temp = state.TakeablePieces(a);
if (a.IsLongMove)
{
temp--;
}
if (temp > maxtaken)
{
maxtaken = temp;
list.Clear();
list.Add(a);
}
else if (temp == maxtaken)
{
list.Add(a);
}
}
if (deterministic)
{
action = list[0];
}
else
{
action = list[random.Next(list.Count)];
}
}
else // random
{
if (deterministic)
{
action = actions[0];
}
else
{
action = actions[random.Next(actions.Length)];
}
}
return(action);
}
public override Move Move(Virus percept)
{
//Checking if we're at an terminal state
byte winner = percept.Winner;
VirusBoard newState = percept.GetBoardCopy();
if (!Q.ContainsKey(newState.CustomHash()))
{
Q.Add(newState.CustomHash(), new Dictionary <UInt32, double>());
}
if (learn && !prevState.Equals(default(VirusBoard)))
{
if (!N.ContainsKey(prevState.CustomHash()))
{
N.Add(prevState.CustomHash(), new Dictionary <UInt32, int>());
}
if (!N[prevState.CustomHash()].ContainsKey(prevAction.CustomHash()))
{
N[prevState.CustomHash()].Add(prevAction.CustomHash(), 0);
}
if (!Q.ContainsKey(prevState.CustomHash()))
{
Q.Add(prevState.CustomHash(), new Dictionary <UInt32, double>());
}
if (!Q[prevState.CustomHash()].ContainsKey(prevAction.CustomHash()))
{
Q[prevState.CustomHash()].Add(prevAction.CustomHash(), initvalue);
}
if (winner == playerNumber)
{
if (!Q[newState.CustomHash()].ContainsKey(0))
{
Q[newState.CustomHash()].Add(0, 1);
}
}
else if (winner != playerNumber && winner != 0)
{
if (!Q[newState.CustomHash()].ContainsKey(0))
{
Q[newState.CustomHash()].Add(0, -1);
}
}
N[prevState.CustomHash()][prevAction.CustomHash()]++;
Q[prevState.CustomHash()][prevAction.CustomHash()] =
Q[prevState.CustomHash()][prevAction.CustomHash()]
+ LearningRate(N[prevState.CustomHash()][prevAction.CustomHash()])
* (prevReward + discount * GetMaxQ(newState) - Q[prevState.CustomHash()][prevAction.CustomHash()]);
}
prevState = newState;
prevAction = GetMaxExplorationFunctionA(newState);
prevReward = 0;
return(prevAction);
}
private Move GetMaxExplorationFunctionA(VirusBoard state)
{
double max = double.NegativeInfinity;
Move action = default(Move);
Move[] actions = state.GetPossibleMoves(playerNumber);
bool berandom = random.NextDouble() < RandomRate;
foreach (Move a in actions)
{
double value = 0;
if (Q[state.CustomHash()].ContainsKey(a.CustomHash()))
{
if (Q[state.CustomHash()][a.CustomHash()] >= 1)
{
value = 1;
max = value;
action = a;
break;
}
else if (Q[state.CustomHash()][a.CustomHash()] <= -1)
{
value = -1;
}
else
{
if (berandom)
{
value = random.NextDouble();
}
else
{
value = Q[state.CustomHash()][a.CustomHash()] + ((explore && !(RandomRate > 0)) ? ExplorationRate(N[state.CustomHash()][a.CustomHash()]) : 0);
}
}
}
else
{
value = 1;
}
if (value > max)
{
max = value;
action = a;
}
}
return(action);
}
//Calc maxValue
private double MaxValue(VirusBoard state, int iteration)
{
iteration++;
if (state.winner == playerNumber)
{
return(double.PositiveInfinity);
}
if (state.winner != playerNumber && state.winner != 0)
{
return(double.NegativeInfinity);
}
if (iteration < searchLength)
{
Move[] actions = state.GetPossibleMoves(playerNumber);
double max = double.NegativeInfinity;
foreach (Move a in actions)
{
VirusBoard newState = state.GetUpdated(a);
double q = Utility(state, newState);
if (Q.ContainsKey(state.CustomHash()))
{
if (Q[state.CustomHash()].ContainsKey(a.CustomHash()))
{
q = Q[state.CustomHash()][a.CustomHash()];
}
}
q += MinValue(newState, iteration);
if (q > max)
{
max = q;
}
if (max == double.PositiveInfinity)
{
return(max);
}
}
return(max);
}
else
{
return(0);
}
}
// Calc minValue
private double MinValue(VirusBoard state, int iteration)
{
iteration++;
if (state.winner == playerNumber)
{
return(double.PositiveInfinity);
}
if (state.winner != playerNumber && state.winner != 0)
{
return(double.NegativeInfinity);
}
if (iteration < searchLength)
{
byte opponent = (playerNumber == 1) ? (byte)2 : (byte)1;
Move[] actions = state.GetPossibleMoves(opponent);
double min = double.PositiveInfinity;
foreach (Move a in actions)
{
VirusBoard newState = state.GetUpdated(a);
double q = Utility(state, newState);
q += MaxValue(newState, iteration);
if (q < min)
{
min = q;
}
if (min == double.NegativeInfinity)
{
return(min);
}
}
return(min);
}
else
{
return(0);
}
}
public override void EndGame(Virus percept)
{
if (learn)
{
double reward = 0;
byte winner = percept.Winner;
if (winner == playerNumber)
{
reward = 1;
}
else if (winner != playerNumber && winner != 0)
{
reward = -1;
}
else
{
reward = 0;
}
if (!N.ContainsKey(prevState.CustomHash()))
{
N.Add(prevState.CustomHash(), new Dictionary <UInt32, int>());
}
if (!N[prevState.CustomHash()].ContainsKey(prevAction.CustomHash()))
{
N[prevState.CustomHash()].Add(prevAction.CustomHash(), 0);
}
N[prevState.CustomHash()][prevAction.CustomHash()]++;
Q[prevState.CustomHash()][prevAction.CustomHash()] =
Q[prevState.CustomHash()][prevAction.CustomHash()]
+ LearningRate(N[prevState.CustomHash()][prevAction.CustomHash()])
* (reward - Q[prevState.CustomHash()][prevAction.CustomHash()]);
}
prevState = default(VirusBoard);
prevAction = default(Move);
prevReward = 0;
}
private double Utility(VirusBoard currentState, VirusBoard nextState)
{
int orgPieces = 0;
foreach (byte b in currentState.board)
{
if (b == playerNumber)
{
orgPieces++;
//orgPieces += orgPieces + 2;
}
else if (b != playerNumber && b != 0)
{
orgPieces--;
}
}
int newPieces = 0;
foreach (byte b in nextState.board)
{
if (b == playerNumber)
{
newPieces++;
//newPieces += newPieces + 2;
}
else if (b != playerNumber && b != 0)
{
newPieces--;
}
}
double difference = newPieces - orgPieces;
difference *= 0.1;
return(difference);
}
public override Move Move(Virus percept)
{
VirusBoard newState = percept.GetBoardCopy();
if (!Q.ContainsKey(newState.CustomHash()))
{
Q.Add(newState.CustomHash(), new Dictionary <UInt32, double>());
}
if (learn && !prevState.Equals(default(VirusBoard)))
{
if (!N.ContainsKey(prevState.CustomHash()))
{
N.Add(prevState.CustomHash(), new Dictionary <UInt32, int>());
}
if (!N[prevState.CustomHash()].ContainsKey(prevAction.CustomHash()))
{
N[prevState.CustomHash()].Add(prevAction.CustomHash(), 0);
}
N[prevState.CustomHash()][prevAction.CustomHash()]++;
Q[prevState.CustomHash()][prevAction.CustomHash()] =
Q[prevState.CustomHash()][prevAction.CustomHash()]
+ LearningRate(N[prevState.CustomHash()][prevAction.CustomHash()])
* (prevReward + discount * GetMaxQ(newState) - Q[prevState.CustomHash()][prevAction.CustomHash()]);
}
prevState = newState;
prevAction = GetMaxExplorationFunctionA(newState);
prevReward = 0;
if (learn && !Q[prevState.CustomHash()].ContainsKey(prevAction.CustomHash()))
{
Q[prevState.CustomHash()].Add(prevAction.CustomHash(), initvalue);
}
return(prevAction);
}