/// <summary>
/// Get `Mutationfactor` for the state-action
/// </summary>
/// <param name="s">For the game state</param>
/// <param name="a">For the action</param>
/// <returns>The mutation factor's value</returns>
protected uint getMutationVal(GameState s, Direction a)
{
if (this.PrevMutationfactor.Key == null) return 0;
var key = new SAPair(s, a);
if (this.PrevMutationfactor.Key.GetHashCode() == key.GetHashCode())
return this.PrevMutationfactor.Value;
return 0;
}
/// <summary>
/// Calculates the `Q` value
/// </summary>
/// <param name="s">For the game state</param>
/// <param name="a">For the action</param>
/// <returns>The `Q` value</returns>
protected float getQVal(GameState s, Direction a)
{
var key = new SAPair(s, a).GetHashCode();
#if __USE_PREPROCESSED_Q__
if (!this._Q.ContainsKey(key))
{
float q = 0;
var ns = this.getNextState(s, a);
if (a == Direction.EAST)
{
if (ns.IsBallMine) q += 5.0F;
else q -= 5.0F;
}
if (ns.Game_State == GameState.State.OPPONENT_SCORED) q = float.NegativeInfinity;
if (ns.Game_State == GameState.State.PLAYER_SCORED) q = float.PositiveInfinity;
this.updateQ(s, a, q);
}
// if making an own-goal
if (this.IsInFrontOfGate(s, false) && s.IsBallMine)
{
if(a == Direction.WEST)
this.updateQ(s, a, float.NegativeInfinity);
}
if (this.IsInFrontOfGate(s, true) && s.IsBallMine)
{
switch (a)
{
case Direction.EAST: this.updateQ(s, a, float.PositiveInfinity); break;
case Direction.HOLD: this.updateQ(s, a, +100); break;
default: this.updateQ(s, a, float.NegativeInfinity); break;
}
}
#endif
if (this._Q.ContainsKey(key))
return _Q[key];
return 0;
}
/// <summary>
/// Updates the `Mutationfactor` table
/// </summary>
/// <param name="s">The game state</param>
/// <param name="a">The action</param>
/// <param name="val">The mutation factor's value</param>
protected void updateMutaionFactor(GameState s, Direction a)
{
var key = new SAPair(s, a);
uint val = 0;
if (this.PrevMutationfactor.Key != null && this.PrevMutationfactor.Key.GetHashCode() == key.GetHashCode())
val = this.PrevMutationfactor.Value + 1;
this.PrevMutationfactor = new KeyValuePair<SAPair, uint>(key, val);
}
/// <summary>
/// Updates the `Q` table
/// </summary>
/// <param name="s">The game state</param>
/// <param name="a">The action</param>
/// <param name="val">The value of state-action</param>
protected void updateQ(GameState s, Direction a, float val)
{
var key = new SAPair(s, a).GetHashCode();
if (this._Q.ContainsKey(key))
this._Q[key] = val;
else
this._Q.Add(key, val);
}
