public override void Execute(AiContext context, UtilityPick pick)
{
_lastInvokedTime = Time.time;
_invokedTimes++;
_inExecution = true;
actionTask?.Invoke(context, pick);
}
public void GoToTarget(AiContext context, UtilityPick pick)
{
var hitGameObject = context.target;
var owner = context.owner as NpcMainScript;
if (owner != null)
{
owner._agent.SetDestination(hitGameObject.transform.position);
}
}
public override UtilityPick Select(AiContext context, List <AbstractUtilityAction> actions)
{
var utilities = new List <UtilityWeights>();
foreach (var action in actions)
{
UtilityPick utility = action.EvaluateAbsoluteUtility(context);
if (utility != null && utility.Score > 0f)
{
utilities.Add(new UtilityWeights(utility.Score, utility));
}
}
var count = utilities.Count;
if (count > 0)
{
utilities.Sort((first, second) => first.Rank.CompareTo(second.Rank));
var std = utilities.GetStd();
var sum = 0f;
var minWeight = float.PositiveInfinity;
var maxWeight = 0f;
var selected = new List <UtilityWeights>();
foreach (var u in utilities)
{
if (u.Rank < std)
{
continue;
}
selected.Add(u);
sum += u.Rank;
}
foreach (var u in selected)
{
u.Weight = u.Rank / sum;
if (u.Weight > maxWeight)
{
maxWeight = u.Weight;
}
if (u.Weight < minWeight)
{
minWeight = u.Weight;
}
}
// TODO: Weights are equal to 1 on the first run ??
var rand = Random.Range(minWeight, maxWeight);
return(utilities.Find(u => u.Weight >= rand).UAction);
}
return(null);
}
public void GoToCover(AiContext context, UtilityPick pick)
{
if (pick.UtilityAction is PickerAction picker)
{
var choices = context.GetParameter(picker.evaluatedParamName) as List <Vector3>;
var owner = context.owner as NpcMainScript;
if (pick.SelectorIdx != -1)
{
owner._agent.SetDestination(choices[pick.SelectorIdx]);
}
}
}
public override UtilityPick Select(AiContext context, List <AbstractUtilityAction> actions)
{
var maxUtility = 0f;
UtilityPick highestScoreAction = null;
for (var i = 0; i < actions.Count; i++)
{
if (actions[i] != null)
{
var utility = actions[i].EvaluateAbsoluteUtility(context);
if (utility.Score > 0 && utility.Score >= maxUtility)
{
maxUtility = utility.Score;
highestScoreAction = utility;
}
}
}
return(highestScoreAction);
}
public void AttackPlayer(AiContext context, UtilityPick pick)
{
var hitGameObject = context.target;
var owner = context.owner as NpcMainScript;
owner._agent.updateRotation = false;
Vector3 direction = (hitGameObject.transform.position - owner.transform.position).normalized;
Quaternion qDir = Quaternion.LookRotation(direction);
owner.transform.rotation = Quaternion.Slerp(owner.transform.rotation, qDir, Time.deltaTime * 100f);
owner._agent.updateRotation = true;
if (hitGameObject != null && hitGameObject.GetComponent <PlayerMainScript>() != null)
{
(owner.npcObject as ICombatAggressor)?.AttackTarget(hitGameObject.GetComponent <PlayerMainScript>()
.playerObject);
}
}
public UtilityWeights(float rank, UtilityPick action)
{
Rank = rank;
UAction = action;
}
public void ReturnHome(AiContext context, UtilityPick pick)
{
var owner = context.owner as NpcMainScript;
owner._agent.SetDestination(context.StartingPoint);
}