/// <summary>
/// Returns an updated situation struct.
/// </summary>
public void Update(AIController controller, AISituation previous, bool updateInDetail)
{
if (!IsAlerted)
{
HasInvestigatedTheLatestAlert = false;
}
else if (!HasInvestigatedTheLatestAlert && Vector3.Distance(CurrentPosition, InvestigationPosition) < controller.Distances.ThreatInvestigation)
{
MarkInvestigated();
}
if (HasAnInvestigatedAlert)
{
InvestigatedAlertAge += Time.deltaTime;
}
if (IsIrritated)
{
if (IrritationTime > controller.Fighting.Irritation)
{
IrritationTime = 0;
IsIrritated = false;
}
else
{
IrritationTime += Time.deltaTime;
}
}
else
{
IrritationTime = 0;
}
// Check grenades
{
IsNearGrenade = false;
float minDist = 1000;
foreach (var grenade in GrenadeList.All)
{
var vec = grenade.transform.position - controller.transform.position;
var dist = vec.magnitude;
if (dist < grenade.ExplosionRadius)
{
if (!IsNearGrenade || dist < minDist)
{
minDist = dist;
IsNearGrenade = true;
NearestGrenadePosition = grenade.transform.position;
if (Threat == null)
{
HasInvestigatedTheLatestAlert = false;
HasAnInvestigatedAlert = false;
IsThreatPositionANewAlert = true;
SetThreatPosition(grenade.transform.position, true);
}
}
}
}
}
// Check friends and enemies.
if (Threat == null || (!IsAlerted && !IsGettingAlerted))
{
foreach (var actor in Actors.All)
{
if (actor != controller.Actor)
{
if (actor.Side != controller.Actor.Side)
{
if (AIUtil.IsInSight(controller, actor.TopPosition))
{
IsAlerted = true;
ReadEnemyState(actor);
break;
}
}
else if (actor.AI != null && actor.AI.IsAlerted)
{
var vector = actor.transform.position - controller.transform.position;
if (vector.magnitude < controller.View.CommunicationDistance)
{
IsAlerted = true;
if (actor.AI.State != AIState.investigate)
{
if (actor.AI.Situation.Threat != null && actor.AI.Situation.HasBetterThreatInfo(actor.AI, ref this))
{
TakeEnemyState(actor.AI);
break;
}
}
}
}
}
}
}
// Check friends if they had investigated the same position
if (IsAlerted && !HasInvestigatedTheLatestAlert)
{
foreach (var friend in Actors.All)
{
if (friend != controller.Actor &&
friend.Side == controller.Actor.Side &&
friend.AI != null &&
friend.AI.IsAlerted &&
friend.AI.Situation.HasAnInvestigatedAlert &&
friend.AI.Situation.InvestigatedAlertAge < 4 &&
Vector3.Distance(friend.transform.position, controller.transform.position) < controller.View.CommunicationDistance &&
Vector3.Distance(friend.AI.Situation.InvestigatedThreatPosition, InvestigationPosition) < controller.Distances.ThreatInvestigation)
{
MarkInvestigated();
break;
}
}
}
var isCheckingAThreatInCover = Threat != null && IsThreatInCover && !CanSeeTheThreat;
// Check threats
if (Threat == null || CanSeeThatNoThreatAtLastPosition || isCheckingAThreatInCover)
{
var minDist = 100000f;
foreach (var alert in Alerts.All)
{
bool isOk;
Actor newThreat = null;
if (Threat != null)
{
if (alert.Actor == null)
{
isOk = NoThreatVisibilityTime > 6;
}
else if (alert.Actor.Side != controller.Actor.Side)
{
isOk = true;
newThreat = alert.Actor;
}
else if (alert.Actor.AI != null)
{
isOk = NoThreatVisibilityTime > 2 && alert.Actor.AI.Situation.NoThreatVisibilityTime < 1;
}
else
{
isOk = NoThreatVisibilityTime > 6;
}
}
else
{
isOk = true;
}
if (isOk)
{
var dist = Vector3.Distance(controller.transform.position, alert.Position);
if (dist < alert.Range)
{
if (dist < minDist)
{
minDist = dist;
IsAlerted = true;
HasAnInvestigatedAlert = false;
HasInvestigatedTheLatestAlert = false;
if (newThreat != null)
{
ReadEnemyState(newThreat);
}
else
{
IsThreatPositionANewAlert = true;
SetThreatPosition(alert.Position, true);
}
}
}
}
}
}
// React to grenades
if (IsNoticingGrenade)
{
if (GrenadeReaction < float.Epsilon)
{
IsNoticingGrenade = false;
}
else
{
GrenadeReaction -= Time.deltaTime;
IsNearGrenade = false;
}
}
else if (IsNearGrenade && !previous.IsNearGrenade)
{
GrenadeReaction = controller.Fighting.GrenadeReactionTime;
IsNoticingGrenade = true;
IsNearGrenade = false;
}
if (IsNearGrenade)
{
IsAlerted = true;
}
// React to being alerted.
if (IsGettingAlerted)
{
if (AlertReaction < float.Epsilon)
{
IsGettingAlerted = false;
IsAlerted = true;
}
else
{
AlertReaction -= Time.deltaTime;
IsAlerted = false;
}
}
else if (IsAlerted && !previous.IsAlerted)
{
AlertReaction = controller.Fighting.ReactionTime;
IsGettingAlerted = true;
IsAlerted = false;
}
if (previous.TargetCover != null &&
(controller.Motor.LeftCover == previous.TargetCover || controller.Motor.RightCover == previous.TargetCover || controller.Motor.Cover == previous.TargetCover))
{
CurrentCover = previous.TargetCover;
}
else
{
CurrentCover = controller.Motor.Cover;
}
CurrentPosition = controller.transform.position;
IsGunReady = controller.Motor.IsGunReady && controller.Motor.Gun.Clip >= controller.Motor.Gun.ClipSize * controller.Fighting.ReloadFraction;
if (Threat == null || Threat.IsAggressive)
{
WouldLikeToRetreat = controller.Health.Health <= controller.Fighting.MinHealth;
}
else
{
WouldLikeToRetreat = false;
}
if (IsAlerted)
{
var couldSeeTheEnemy = CanSeeTheThreat;
CanSeeTheThreat = false;
if (Threat != null)
{
var noPatience = NoThreatVisibilityTime > controller.Fighting.Patience;
if (couldSeeTheEnemy || updateInDetail)
{
CanSeeTheThreat = AIUtil.IsInSight(controller, Threat.TopPosition);
}
if (CanSeeTheThreat)
{
ReadEnemyState(Threat);
if (!couldSeeTheEnemy && noPatience)
{
IsIrritated = true;
}
}
else
{
if (noPatience || (NoThreatVisibilityTime > 2 && (!IsThreatInCover || Vector3.Dot(ThreatCoverForward, ThreatGroundPosition - CurrentPosition) > 0)))
{
if (!IsThreatInCover ||
noPatience ||
Vector3.Distance(CurrentPosition, ThreatGroundPosition) < controller.Distances.ThreatInvestigation ||
AIUtil.IsInSight(controller, (ThreatGroundPosition + ThreatTopPosition) * 0.5f))
{
CanSeeThatNoThreatAtLastPosition = true;
}
}
NoThreatVisibilityTime += Time.deltaTime;
if (updateInDetail)
{
// Check friends.
foreach (var friend in Actors.All)
{
if (friend != controller.Actor &&
friend.Side == controller.Actor.Side &&
friend.AI != null &&
friend.AI.IsAlerted &&
friend.AI.State != AIState.investigate &&
friend.AI.Situation.Threat == Threat &&
friend.AI.Situation.HasBetterThreatInfo(friend.AI, ref this))
{
var vector = friend.transform.position - controller.transform.position;
if (vector.magnitude < controller.View.CommunicationDistance)
{
TakeEnemyState(friend.AI);
}
}
}
}
}
}
if (TargetCover != null && updateInDetail)
{
var distanceToThreat = Vector3.Distance(TargetPosition, ThreatGroundPosition);
IsTargetCoverGood = distanceToThreat >= controller.Distances.MinEnemy &&
distanceToThreat >= controller.Cover.MinCoverToEnemyDistance &&
AIUtil.IsGoodAngle(controller,
TargetCover,
TargetPosition,
ThreatGroundPosition,
TargetCover.IsTall) &&
!AIUtil.IsCoverPositionTooCloseToFriends(TargetCover, controller, TargetPosition);
}
if (updateInDetail)
{
if (IsThreatInCover)
{
if (CurrentCover != null && CurrentCover.IsTall)
{
var aimPoint = Vector3.zero;
var isGood = true;
if (TargetDirection < 0)
{
isGood = CurrentCover.IsLeft(Util.AngleOfVector(ThreatStandingTopPosition - CurrentCover.LeftCorner(0)), controller.Motor.CoverSettings.Angles.LeftCorner, false);
if (isGood)
{
aimPoint = CurrentCover.LeftCorner(0, controller.Motor.CoverSettings.CornerOffset.x);
}
}
else
{
isGood = CurrentCover.IsRight(Util.AngleOfVector(ThreatStandingTopPosition - CurrentCover.RightCorner(0)), controller.Motor.CoverSettings.Angles.LeftCorner, false);
if (isGood)
{
aimPoint = CurrentCover.RightCorner(0, controller.Motor.CoverSettings.CornerOffset.x);
}
}
CanSeeFromCurrentPosition = AIUtil.IsInSight(controller, aimPoint, ThreatStandingTopPosition);
}
else
{
CanSeeFromCurrentPosition = AIUtil.IsInSight(controller, CurrentPosition, ThreatStandingTopPosition);
}
}
else
{
CanSeeFromCurrentPosition = CanSeeTheThreat;
}
}
}
else
{
if (TargetCover != null && updateInDetail)
{
IsTargetCoverGood = !AIUtil.IsCoverPositionTooCloseToFriends(TargetCover, controller, TargetPosition);
}
}
}
private bool isValidCover(Cover cover, Vector3 position, int direction, bool checkPath)
{
if (!_hasThreat)
{
return(true);
}
if (Vector3.Distance(position, _threatPosition) < AvoidDistance)
{
return(false);
}
if (!AIUtil.IsGoodAngle(MaxTallCoverAngle,
MaxLowCoverAngle,
cover,
position,
_threatPosition,
cover.IsTall))
{
return(false);
}
if (!AIUtil.IsCoverPositionFree(cover, position, 1, _actor))
{
return(false);
}
var aimPosition = position;
if (cover.IsTall)
{
var angle = Util.AngleOfVector(_threatPosition - position);
if (direction > 0)
{
if (!cover.IsFrontField(angle, _motor.CoverSettings.Angles.TallRightCornerFront))
{
return(false);
}
if (!cover.IsRight(angle, _motor.CoverSettings.Angles.RightCorner, false))
{
return(false);
}
aimPosition = cover.RightCorner(cover.Bottom, _motor.CoverSettings.CornerOffset.x);
}
else if (direction < 0)
{
if (!cover.IsFrontField(angle, _motor.CoverSettings.Angles.TallLeftCornerFront))
{
return(false);
}
if (!cover.IsLeft(angle, _motor.CoverSettings.Angles.LeftCorner, false))
{
return(false);
}
aimPosition = cover.LeftCorner(cover.Bottom, _motor.CoverSettings.CornerOffset.x);
}
}
if (AIUtil.IsObstructed(aimPosition + (_actor.StandingTopPosition - transform.position),
_threatPosition + Vector3.up * 2,
100))
{
return(false);
}
if (checkPath)
{
if (Vector3.Distance(transform.position, _threatPosition) > AvoidDistance)
{
if (NavMesh.CalculatePath(transform.position, position, 1, _path))
{
for (int i = 0; i < _path.GetCornersNonAlloc(_corners); i++)
{
var a = i == 0 ? transform.position : _corners[i - 1];
var b = _corners[i];
var closest = Util.FindClosestToPath(a, b, _threatPosition);
if (Vector3.Distance(closest, _threatPosition) < AvoidDistance)
{
return(false);
}
}
}
else
{
return(false);
}
}
}
return(true);
}