private bool WriteToFile(QState qstate, int actionNumber)
{
try
{
using (Stream count = GetDataFile("count.dat"))
{
var data = count;
using (var tw = new StreamWriter(count))
{
data.CopyTo(tw.BaseStream);
tw.WriteLine((int)qstate.DistanceToEnemy + " "
+ (int)qstate.EnemyEnergy + " "
+ (int)qstate.EnemyVelocity + " "
+ (int)qstate.OurEnergy + " "
+ (int)qstate.OurVelocity + " "
+ actionNumber);
}
}
}
catch (Exception e)
{
return(false);
}
return(true);
}
public void Learn(QState prevState, QState currState, int actionNubmer, double reward)
{
var qVal = QFunction.Q[(int)prevState.DistanceToEnemy, (int)prevState.EnemyEnergy,
(int)prevState.EnemyVelocity, (int)prevState.OurEnergy, (int)prevState.OurVelocity,
actionNubmer];
var valuesForAnyActionCurrState = new double[] { QFunction.Q[(int)currState.DistanceToEnemy, (int)currState.EnemyEnergy,
(int)currState.EnemyVelocity, (int)currState.OurEnergy, (int)currState.OurVelocity,
0], QFunction.Q[(int)currState.DistanceToEnemy, (int)currState.EnemyEnergy,
(int)currState.EnemyVelocity, (int)currState.OurEnergy, (int)currState.OurVelocity,
1], QFunction.Q[(int)currState.DistanceToEnemy, (int)currState.EnemyEnergy,
(int)currState.EnemyVelocity, (int)currState.OurEnergy, (int)currState.OurVelocity,
2], QFunction.Q[(int)currState.DistanceToEnemy, (int)currState.EnemyEnergy,
(int)currState.EnemyVelocity, (int)currState.OurEnergy, (int)currState.OurVelocity,
3], QFunction.Q[(int)currState.DistanceToEnemy, (int)currState.EnemyEnergy,
(int)currState.EnemyVelocity, (int)currState.OurEnergy, (int)currState.OurVelocity,
4] };
var maxQVal = valuesForAnyActionCurrState.Max();
var newQVal = qVal + alpha * (reward + gamma * maxQVal - qVal);
QFunction.Q[(int)prevState.DistanceToEnemy, (int)prevState.EnemyEnergy,
(int)prevState.EnemyVelocity, (int)prevState.OurEnergy, (int)prevState.OurVelocity,
actionNubmer] = newQVal;
}
private void UpdateValue(QState previousState, double maxDistance)
{
var numbers = Enumerable.Range(0, buckets.Max()).ToList();
var doubleNubmers = numbers.Select(x => x + 0.0001).ToList();
if (doubleNubmers.Contains(DistanceToEnemy))
{
DistanceToEnemy = previousState.DistanceToEnemy;
}
else
{
DistanceToEnemy = DiscretiseData(maxDistance, DistanceToEnemy, 0);
}
if (doubleNubmers.Contains(EnemyEnergy))
{
EnemyEnergy = previousState.EnemyEnergy;
}
else
{
EnemyEnergy = DiscretiseData(100, EnemyEnergy, 1);
}
if (doubleNubmers.Contains(EnemyVelocity))
{
EnemyVelocity = previousState.EnemyVelocity;
}
else
{
EnemyVelocity = DiscretiseData(Rules.MAX_VELOCITY, EnemyVelocity, 2);
}
if (doubleNubmers.Contains(OurEnergy))
{
OurEnergy = previousState.OurEnergy;
}
else
{
OurEnergy = DiscretiseData(100, OurEnergy, 3);
}
if (doubleNubmers.Contains(OurVelocity))
{
OurVelocity = previousState.OurVelocity;
}
else
{
OurVelocity = DiscretiseData(Rules.MAX_VELOCITY, OurVelocity, 4);
}
}
public override void Run()
{
var moveAmount = Math.Max(BattleFieldWidth, BattleFieldHeight);
var qAction = new QAction(this);
var qLearn = new QLearn();
//ReadQFunctionFromFile();
//var a = QFunction.Q;
Ahead(moveAmount);
TurnGunRight(90);
TurnRight(90);
while (true)
{
previousState = currentState;
var actionNumber = qAction.SampleAction();
currentState.Discretise(moveAmount, previousState);
qLearn.Learn(previousState, currentState, actionNumber, currentState.OurEnergy);
}
}
} // 0 - Rules.MAX_VELOCITY
public void Discretise(double maxDistance, QState previousState)
{
UpdateValue(previousState, maxDistance);
}