/// <summary>
/// evaluate given state-prob pair
/// </summary>
/// <param name="current">current confict state, without any applied actions</param>
/// <param name="pairs">pairs to evaluate</param>
/// <param name="character">npc character</param>
/// <returns>calculated cost of given pairs</returns>
private int ComputeCost(ConflictState current, StateProbPairs pairs, CharacterNPC character)
{
int cost = 0;
ConflictState state;
for (int i = 0; i < pairs.states.Count; i++)
{
state = pairs.states[i];
if (state.myHP > character.hp)
{
state.myHP = character.hp;
}
if (state.myMana > character.mana)
{
state.myMana = character.mana;
}
int myHpRating = 0, enemyHpRating = 0, boostRating = 0, manaRating = 0;
if (state.myHP > current.myHP)
{
myHpRating = current.myHP;
}
else if (state.myHP < current.myHP)
{
myHpRating = current.myHP - state.myHP; //self harm
}
if (state.myMana - current.myMana >= 80)
{
manaRating = current.myMana;
}
else if (state.myMana < current.myMana)
{
manaRating = state.myMana - current.myMana;
}
if (state.enemyHP < current.enemyHP)
{
enemyHpRating = state.enemyHP;
}
boostRating = 0;// character.mana - state.myMana;
int energyRating = (current.myEnergy - state.myEnergy) * 10;
int timeRating = pairs.action.time / 10;
int sum = myHpRating + enemyHpRating + boostRating + energyRating + manaRating + timeRating;
sum *= (pairs.probabilities[i]);
sum /= 100;
cost += sum;
}
cost /= pairs.states.Count;
return(cost);
}
/// <summary>
/// from generated state-prob pairs choose the best one and returns new Confict state
/// </summary>
/// <param name="myself">npc, which is choosing from actions</param>
/// <param name="enemy">enemy npc on which is the target</param>
/// <param name="priors">priors from npc character, useless for now</param>
/// <param name="actionType">type of action</param>
/// <returns>new confict state</returns>
public ConflictState GetNextAction(IActing myself, IActing enemy, Priorities priors, out Action selectedAction)
{
ConflictState currentState = new ConflictState(myself.GetStatus(), enemy.GetStatus());
Priorities priorities = priors;
CharacterNPC myChar = myself.GetCharacter();
//if (this.stateSpace.Count == 0)
//{
// CreateStateSpace(currentState, myChar);
//}
List <StateProbPairs> expanders = Expand(currentState, myChar);
StateProbPairs result = new StateProbPairs();
int lowestCost = int.MaxValue;
int actionCost = int.MaxValue;
foreach (StateProbPairs pairs in expanders)
{
//if (this.stateSpace.Contains(pairs))
//{
// Logging.Logger.AddInfo(pairs.ToString() + " je obsazeno");
//}
actionCost = ComputeCost(currentState, pairs, myChar);
if (actionCost < lowestCost && actionCost >= 0)
{
result = pairs;
lowestCost = actionCost;
}
}
if (result.states == null)
{
result.states.Add(currentState);
Action empty = new Action();
empty.name = "empty";
empty.time = 5000;
result.action = empty;
result.probabilities.Add(100);
}
int index = 0;
if (result.probabilities.Count > 1)
{
int randChoose = rand.Next(100);
if (randChoose < result.probabilities[0])
{
index = 0;
}
else if (randChoose < result.probabilities[0] + result.probabilities[1])
{
index = 1;
}
else
{
if (result.states.Count > 2)
{
index = 2;
}
}
}
if (index >= result.states.Count)
{
index = 0;
}
Logging.Logger.AddInfo(myChar.name + ": " + result.action.ToString() + " proti " + enemy.GetCharacter().name + ", cost=" + lowestCost + ", efekt: " + index);
myself.SetCoolDown(result.action.time);
selectedAction = result.action;
this.lastAction = selectedAction;
//return result.states[index];
return(result.states[0]);
}
/// <summary>
/// apply actions on conflict state and by this generate followers of current confict state
/// </summary>
/// <param name="state"> current conflict state </param>
/// <param name="character">character of npc, used for checking stats</param>
/// <param name="actionType">action type, which says, what actions are available</param>
/// <returns>List of state-probability pairs</returns>
private List <StateProbPairs> Expand(ConflictState state, CharacterNPC character)
{
List <StateProbPairs> expanders = new List <StateProbPairs>();
//List<Action> actions = null;
//switch (actionType)
//{
// case ActionType.Attack:
// actions = this.attackActions;
// break;
// case ActionType.Defense:
// actions = this.defenseActions;
// break;
// default:
// Logging.Logger.AddWarning("Spatny typ akce");
// return expanders;
// //break;
//}
foreach (Action action in this.actions)
{
if (action.name == lastAction.name && action.name.StartsWith("Heal"))
{
break;
}
//TODO - spravit cooldownama
StateProbPairs pairs = new StateProbPairs();
pairs.states = new List <ConflictState>();
pairs.probabilities = new List <int>();
ConflictState succesState; // = new ConflictState();
ConflictState noEffectState; // = new ConflictState();
ConflictState failState; // = new ConflictState();
succesState = state + action; //spell casted succesfull
noEffectState = state; //casting has no effect,
failState = state; // -action; //casting fail and harm caster
failState.myHP -= action.enemyHpTaken;
failState.myHP -= action.hpGot;
int prob = action.probability;
int noneProb = 100 - prob - failProb;
int fail = failProb;
//check and add to expanders
if (CheckStats(character, ref succesState))
{
pairs.states.Add(succesState);
pairs.probabilities.Add(prob);
if (action.probability != 100)
{
if (CheckStats(character, ref failState))
{
pairs.states.Add(failState);
pairs.probabilities.Add(fail);
}
//pairs.states.Add(noEffectState);
//pairs.probabilities.Add(noneProb);
}
}
pairs.action = action;
if (pairs.states.Count > 0)
{
expanders.Add(pairs);
}
}
return(expanders);
}