// This function evaluates the game-field
// It then creates and returns an ActionData object referring to the steps for executing the action
public ActionData GetActionData()
{
// first, find the best ability in terms of significance.
List <AbilityOption> options = myUnit.GetAbilityOptions();
float highestSignificance = float.NegativeInfinity;
// for each possible action:
for (int i = 0; i < options.Count; i++)
{
// evaluate the significance of this particular option
SignifyAbility(options[i]);
// Debug.Log("Ability: " + options[i].GetAbility() + " | Significance: " + options[i].GetSignificance());
// check if it has the highest significance
if (options[i].GetSignificance() >= highestSignificance)
{
committedAbilityIndex = i;
committedAbilityOption = options[i];
highestSignificance = options[i].GetSignificance();
}
}
committedMovement = CommitMovement();
return(new ActionData(committedMovement.Item1, committedMovement.Item2, committedAbilityIndex));
}
// Takes an AbilityOption object and evaluates/sets its significance // this function is abstract because way in which an ability is given significance is biased based on the type of EnemyAction that has been decided upon // for example, being Aggro will value different things when choosing an option as opposed to being Defensive protected abstract void SignifyAbility(AbilityOption option);
protected override void SignifyAbility(AbilityOption option)
{
// start at 0.0 significance
option.SetSignificance(0.0f);
// get variables
Vector2Int bestTarget = new Vector2Int(int.MaxValue, int.MaxValue);
Dictionary <Vector2Int, MutableTuple <Unit, float> > affectableUnits = option.GetAffectableUnits();
bool unitIsAffectable;
foreach (EffectState effect in option.GetAbility().GetEffectState())
{
foreach (Vector2Int key in affectableUnits.Keys)
{
unitIsAffectable = false;
// go through each type of Effect that the ability deals, adding significance each time
switch (effect)
{
case EffectState.DAMAGE:
// we don't want to damage EnemyUnits
if (!(affectableUnits[key].Item1 is EnemyUnit))
{
unitIsAffectable = true;
// if using this ability would reduce this Unit's HP to 0 or below,
// definitely consider doing this.
if ((option.GetAbility() as Attack).LethalAttack(affectableUnits[key].Item1))
{
affectableUnits[key].Item2 = float.PositiveInfinity;
}
else
{
// the significance of this ability against this Unit is double the ratio of how much of the Unit's current health that the ability will deal, out of 10.0
float significance = ((float)((option.GetAbility() as Attack).GetDamage()) / (float)(affectableUnits[key].Item1.GetHealth() + affectableUnits[key].Item1.GetDamageReduction()) * 20.0f);
affectableUnits[key].Item2 += significance;
}
}
break;
case EffectState.BUFF_DR:
// viable units are (friendly) EnemyUnits that are not capped out of DR (max 5)
if (affectableUnits[key].Item1 is EnemyUnit && affectableUnits[key].Item1.GetDamageReduction() < 5)
{
unitIsAffectable = true;
// the significance of using this effect is greater the less DR the Unit already has (max 2.5)
float significance = ((float)(affectableUnits[key].Item1.GetDamageReduction() - 5)) / -2.0f;
affectableUnits[key].Item2 += significance;
}
break;
case EffectState.BUFF_DMG:
// viable units are (friendly) EnemyUnits that are not Buffed
if (affectableUnits[key].Item1 is EnemyUnit && !affectableUnits[key].Item1.attackBuffed)
{
unitIsAffectable = true;
affectableUnits[key].Item2 += 2.5f;
}
break;
case EffectState.IMMOBILIZE:
// viable units are (nonfriendly) non-EnemyUnits that are not stunned
if (!(affectableUnits[key].Item1 is EnemyUnit) && !(affectableUnits[key].Item1.GetImmobilizedDuration() > 0))
{
unitIsAffectable = true;
affectableUnits[key].Item2 += 2.5f;
}
break;
case EffectState.KNOCKBACK:
// viable units are (nonfriendly) non-EnemyUnits
if (!(affectableUnits[key].Item1 is EnemyUnit))
{
unitIsAffectable = true;
affectableUnits[key].Item2 += 1.5f;
}
break;
case EffectState.DISABLE:
// viable units are (nonfriendly) non-EnemyUnits
if (!(affectableUnits[key].Item1 is EnemyUnit) && !(affectableUnits[key].Item1.GetDisabledDuration() > 0))
{
unitIsAffectable = true;
affectableUnits[key].Item2 += 3.5f;
}
break;
default:
break;
}
// We have a new Best Target IF: its viably affectable AND: there isn't one OR this significance is bigger than the current best
if (unitIsAffectable && ((bestTarget.x == int.MaxValue && bestTarget.y == int.MaxValue) || (affectableUnits[key].Item2 >= affectableUnits[bestTarget].Item2)))
{
bestTarget = key;
}
}
}
// If this Ability cannot affect any meaningful Units: Do NOT use it
// IF: This ability deals some sort of effect AND either: there is no bestTarget NOR affectable Unit
if (option.GetAbility().GetEffectState().Count > 0 && ((bestTarget.x == int.MaxValue && bestTarget.y == int.MaxValue) || affectableUnits.Keys.Count <= 0))
{
option.SetSignificance(float.NegativeInfinity);
}
else if (option.GetAbility() is Wait)
{
// wait should be zero, AKA it should only be chosen if everything else is an awful choice
option.SetSignificance(0.0f);
// a disabled Unit MUST wait
if (myUnit.GetDisabledDuration() > 0)
{
option.SetSignificance(float.PositiveInfinity);
}
}
else
{
option.SetSignificance(affectableUnits[bestTarget].Item2);
}
}