private Vector3 followerPositionAt(FormationType formation, int index)
{
switch (formation)
{
case FormationType.Square:
{
var right = Vector3.Cross(Direction, Vector3.up);
Vector3 position;
switch (index)
{
case 0: position = transform.position - (right + Direction).normalized * Square.Distance; break;
case 1: position = transform.position - (-right + Direction).normalized * Square.Distance; break;
default: position = transform.position - Direction * Square.Distance * index; break;
}
var ideal = position;
AIUtil.GetClosestStandablePosition(ref position);
var closest = Vector3.zero;
var hasClosest = false;
var minDist = 0f;
for (int i = 0; i < _followers.Count; i++)
{
var dist = Vector3.Distance(_followers[i].transform.position, ideal);
if (_followers[i]._obstacle != null && _followers[i]._obstacle.enabled && dist <= _followers[i]._obstacle.radius + float.Epsilon)
{
dist = 0;
}
if (!hasClosest || dist < minDist)
{
closest = _followers[i].transform.position;
minDist = dist;
hasClosest = true;
}
}
if (hasClosest && Vector3.Distance(position, ideal) > minDist)
{
position = closest;
}
return(position);
}
case FormationType.Line:
return(_line[index]);
default:
Debug.Assert(false);
return(Vector3.zero);
}
}
/// <summary>
/// React to attacks on other AI.
/// </summary>
public void OnFriendHit(Actor friend)
{
if (friend == null)
{
return;
}
var vector = friend.transform.position - transform.position;
if (vector.magnitude < View.CommunicationDistance)
{
_situation.IsAlerted = true;
}
else if (vector.magnitude < View.SightDistance && !IsAlerted)
{
if (AIUtil.IsInSight(this, friend.TopPosition))
{
_situation.IsAlerted = true;
}
}
if (_situation.IsAlerted && _situation.Threat == null)
{
var ai = friend.GetComponent <AIController>();
if (ai != null)
{
_situation.TakeEnemyState(ai);
}
}
}
private bool updateIsMelee()
{
_meleeTarget = null;
var weapon = _motor.EquippedWeapon;
if (!weapon.HasMelee || weapon.Gun != null)
{
return(false);
}
var minDist = 0f;
for (int i = 0; i < AIUtil.FindActors(_motor.transform.position, MeleeRadius, _actor); i++)
{
var actor = AIUtil.Actors[i];
if (actor.Side == _actor.Side)
{
continue;
}
var dist = Vector3.Distance(_motor.transform.position, actor.transform.position);
if (_meleeTarget == null || dist < minDist)
{
_meleeTarget = actor;
minDist = dist;
}
}
return(_meleeTarget != null);
}
/// <summary>
/// Sets up the navigation agent to move to the givent position.
/// </summary>
private void updatePath()
{
AIUtil.Path(ref _path, transform.position, _target);
_pathLength = _path.GetCornersNonAlloc(_pathPoints);
_currentPathIndex = 0;
if (_pathLength > _pathPoints.Length)
{
_pathLength = _pathPoints.Length;
}
if (_pathLength > 1)
{
var vector = _pathPoints[1] - _pathPoints[0];
var distance = vector.magnitude;
if (distance > 0.3f)
{
updateDirection(vector / distance, true);
}
}
_hasCheckedIfReachable = false;
_positionToCheckIfReachable = _target;
}
private bool canMoveInDirection(Vector3 vector)
{
if (AIUtil.IsNavigationBlocked(transform.position, transform.position + vector))
{
return(false);
}
return(true);
}
/// <summary>
/// Sets up the navigation agent to move to the givent position.
/// </summary>
private void updatePath()
{
AIUtil.Path(ref _path, transform.position, _target);
_pathLength = _path.GetCornersNonAlloc(_pathPoints);
_currentPathIndex = 0;
if (_pathLength > 1)
{
updateDirection((_pathPoints[1] - _pathPoints[0]).normalized, true);
}
}
/// <summary>
/// Catches the animator event during the execution and may perform the action. Returns true if that is the case.
/// </summary>
public override bool OnFinishAction()
{
var count = AIUtil.FindActorsIncludingDead(_targetPosition, Radius);
for (int i = 0; i < count; i++)
{
PlayEffect(AIUtil.Actors[i], AIUtil.Actors[i].transform.position);
Perform(AIUtil.Actors[i]);
}
return(true);
}
private bool shouldRunTo(Vector3 position)
{
var distance = Vector3.Distance(transform.position, position);
if (distance > WalkDistance || (distance > VerifyDistance && !AIUtil.IsInSight(_actor, position, VerifyDistance, 360)))
{
return(true);
}
else
{
return(false);
}
}
private bool isValidSide(Vector3 vector)
{
if (!_motor.IsFree(vector, 0.5f, 0.1f))
{
return(false);
}
if (AIUtil.IsObstructed(transform.position + Vector3.up * 2, _target + Vector3.up * 2, 1000))
{
return(false);
}
return(true);
}
/// <summary>
/// React to attacks and notify other AI about it.
/// </summary>
public void OnHit(Hit hit)
{
_situation.IsAlerted = true;
if (hit.Attacker != null && _situation.Threat == null)
{
var threat = hit.Attacker.GetComponent <Actor>();
if (threat != null && threat.Side != _actor.Side)
{
_situation.ReadEnemyState(threat);
}
}
AIUtil.NotifyFriends(_actor, "OnFriendHit", _actor);
}
private void runTo(Vector3 position)
{
if (_isKeepingCloseTo && Vector3.Distance(position, _keepCloseTo.Position) > _keepCloseTo.Distance)
{
position = _keepCloseTo.Position + (position - _keepCloseTo.Position).normalized * _keepCloseTo.Distance;
}
if (AIUtil.GetClosestStandablePosition(ref position))
{
Message("ToRunTo", position);
}
else
{
OnPositionUnreachable(position);
}
}
/// <summary>
/// Updates the target situation to approach an enemy that's in cover.
/// </summary>
public static void ApproachACovered(AIController controller, ref AISituation situation)
{
var path = new NavMeshPath();
var corners = new Vector3[16];
var resultPosition = situation.ThreatGroundPosition;
var resultDistance = 9999f;
var coverAngle = Util.AngleOfVector(situation.ThreatCoverForward);
for (int a = 0; a < 18; a++)
{
var angle = coverAngle - 180f + a * 10;
var position = situation.ThreatGroundPosition + new Vector3(Mathf.Cos(angle * Mathf.Deg2Rad), 0, Mathf.Sin(angle * Mathf.Deg2Rad)) * controller.Distances.MinEnemy;
NavMeshHit hit;
if (NavMesh.SamplePosition(position, out hit, 1.0f, NavMesh.AllAreas) &&
AIUtil.IsInSight(controller, hit.position, situation.ThreatStandingTopPosition))
{
NavMesh.CalculatePath(controller.transform.position, hit.position, NavMesh.AllAreas, path);
if (path.status == NavMeshPathStatus.PathComplete &&
!AIUtil.IsPositionTooCloseToFriends(controller, hit.position))
{
var dist = 0f;
for (int i = 1; i < path.GetCornersNonAlloc(corners); i++)
{
dist += Vector3.Distance(corners[i - 1], corners[i]);
}
if (dist < resultDistance)
{
resultDistance = dist;
resultPosition = position;
}
}
}
}
situation.TargetPosition = resultPosition;
situation.TargetCover = null;
}
private bool canBeInvestigated(SearchPoint point)
{
var position = point.Position + Vector3.up * VerifyHeight;
var distanceToPoint = Vector3.Distance(transform.position, position);
var checkDistance = VerifyDistance;
if (point.Visibility < checkDistance)
{
checkDistance = point.Visibility;
}
if (distanceToPoint < checkDistance &&
(distanceToPoint < 1 ||
AIUtil.IsInSight(_actor, position, checkDistance, FieldOfView)))
{
return(!point.RequiresReaching || distanceToPoint < 1.1f);
}
return(false);
}
/// <summary>
/// Notified by the brains of a new threat position.
/// </summary>
public void OnThreatPosition(Vector3 position)
{
if (!_isAssaulting || !isActiveAndEnabled)
{
return;
}
_threatPosition = position;
if (Vector3.Distance(position, _targetPosition) > 0.5f)
{
_targetPosition = position;
if (AIUtil.GetClosestStandablePosition(ref position))
{
Message("ToRunTo", position);
}
else
{
OnPositionUnreachable(position);
}
}
}
/// <summary>
/// Checks if the given actor is field of view. Result is immediate, does not execute any events or messages.
/// </summary>
public bool CheckVisibility(Actor actor)
{
var viewDistance = actor.GetViewDistance(Distance, _isAlerted);
return(AIUtil.IsInSight(_actor, actor.TopPosition, viewDistance, FieldOfView, ObstacleIgnoreDistance));
}
private void Update()
{
if (_situation.IsAlerted)
{
if (!_hasAddedToAlertedControllers)
{
_hasAddedToAlertedControllers = true;
_alertedControllers.Add(this);
}
}
else if (_hasAddedToAlertedControllers)
{
_alertedControllers.Remove(this);
}
_stateTime += Time.deltaTime;
_agent.updatePosition = false;
_agent.updateRotation = false;
_agent.updateUpAxis = false;
_agent.autoRepath = true;
_agent.autoBraking = false;
if (!_motor.IsAlive)
{
_situation.TargetCover = null;
}
if (_lastTargetCover != _situation.TargetCover)
{
if (_lastTargetCover != null)
{
_lastTargetCover.UnregisterUser(_actor);
}
_lastTargetCover = _situation.TargetCover;
if (_lastTargetCover != null)
{
_lastTargetCover.RegisterUser(_actor);
}
}
if (_isWaitingForPath && !_agent.pathPending)
{
_pathLength = _agent.path.GetCornersNonAlloc(_path);
_currentPathIndex = 0;
_isWaitingForPath = false;
}
if (!_motor.IsAlive)
{
_state = AIState.none;
_agent.enabled = false;
return;
}
else
{
_agent.enabled = true;
}
if (_motor.PotentialCover != null)
{
_motor.InputTakeCover();
}
if (_situation.IsAlerted)
{
if (!_motor.IsInCover)
{
_motor.InputAim();
}
// Make the AI pick up a weapon.
if (Fighting.WeaponToUse <= 0)
{
_motor.InputWeapon(0);
}
else if (Fighting.WeaponToUse - 1 < _motor.Weapons.Length)
{
_motor.InputWeapon(Fighting.WeaponToUse);
}
else
{
_motor.InputWeapon(_motor.Weapons.Length);
}
_situation.IsAllowedToBeAggressive = true;
///
/// POTENTIALLY FORGET ABOUT THE ENEMY. CHECK IF CAN BE AGGRESSIVE.
///
if (_situation.Threat != null)
{
if (_situation.Threat.IsAlive)
{
if (!_situation.CanSeeTheThreat && _situation.NoThreatTimer > View.EnemySustainTime)
{
_situation.RemoveEnemyState();
}
else
{
if (_registeredGroup != null)
{
_registeredGroup.MarkAsPotentialAggressive(this);
_situation.IsAllowedToBeAggressive = _registeredGroup.IsAggressive(this);
}
}
}
else
{
_situation.RemoveEnemyState();
}
}
///
/// AIM AND FIRE
///
if (_situation.Threat != null && (_situation.CanSeeTheThreat || _situation.NoThreatTimer < View.SightSustainTime))
{
// Process grenade throwing
if (_situation.ThrownGrenadeCount < Grenades.GrenadeCount)
{
var doThrow = false;
if (_situation.IsAllowedToBeAggressive)
{
if (_hasThrowFirstGrenade)
{
if (_grenadeTimer < Grenades.Interval)
{
_grenadeTimer += Time.deltaTime;
}
else
{
doThrow = true;
}
}
else
{
if (_grenadeTimer < Grenades.FirstGrenadeDelay)
{
_grenadeTimer += Time.deltaTime;
}
else
{
doThrow = true;
}
}
}
if (doThrow && _motor.PotentialGrenade != null)
{
if (_grenadeCheckTimer <= float.Epsilon)
{
GrenadeDescription desc;
desc.Gravity = _motor.Grenade.Gravity;
desc.Duration = _motor.PotentialGrenade.Timer;
desc.Bounciness = _motor.PotentialGrenade.Bounciness;
var length = GrenadePath.Calculate(GrenadePath.Origin(_motor, Util.AngleOfVector(_situation.ThreatGroundPosition - transform.position)),
_situation.ThreatGroundPosition,
_motor.Grenade.MaxVelocity,
desc,
_grenadePath,
_motor.Grenade.Step);
if (Vector3.Distance(_grenadePath[length - 1], _situation.ThreatGroundPosition) > Grenades.MaxRadius ||
Vector3.Distance(_grenadePath[length - 1], _situation.CurrentPosition) < Grenades.AvoidDistance)
{
_grenadeCheckTimer = Grenades.CheckInterval;
}
else
{
_motor.InputThrowGrenade(_grenadePath, length, _motor.Grenade.Step);
_situation.ThrownGrenadeCount++;
_grenadeTimer = 0;
_hasThrowFirstGrenade = true;
}
}
else
{
_grenadeCheckTimer -= Time.deltaTime;
}
}
else
{
_grenadeCheckTimer = 0;
}
}
// Position in world space that is best fit to aim at.
var perfectTarget = _situation.ThreatGroundPosition + (_situation.ThreatTopPosition - _situation.ThreatGroundPosition) * 0.7f;
if (_situation.IsThreatInCover)
{
var dot = Vector3.Dot(_situation.ThreatCoverForward, (_situation.ThreatGroundPosition - transform.position).normalized);
if (dot < -0.1f)
{
perfectTarget = _situation.ThreatStandingTopPosition;
}
}
// Make the AI look at the target.
{
var vector = perfectTarget - _motor.transform.position;
vector.y = 0;
if (vector.magnitude < 2)
{
_motor.SetLookTarget(perfectTarget + vector * 2);
}
else
{
_motor.SetLookTarget(perfectTarget);
}
_motor.SetBodyLookTarget(perfectTarget);
}
// Aim the gun at the inprecise target.
var targetRadius = Fighting.TargetRadius.Get(Vector3.Distance(_situation.ThreatGroundPosition, transform.position));
_motor.SetFireTarget(perfectTarget + new Vector3(UnityEngine.Random.Range(-1, 1) * targetRadius,
UnityEngine.Random.Range(-1, 1) * targetRadius,
UnityEngine.Random.Range(-1, 1) * targetRadius));
// We want AI too look at the corner when standing near it.
if (_motor.IsInTallCover)
{
if (_situation.TargetDirection < 0)
{
_motor.InputStandLeft();
}
else if (_situation.TargetDirection > 0)
{
_motor.InputStandRight();
}
}
// Fire
{
var isAllowedToFire = _situation.IsAllowedToBeAggressive;
if (Behaviour.OnlyFireWhenSeen || !_situation.IsAllowedToBeAggressive)
{
var up = Camera.main.WorldToViewportPoint(transform.position);
var down = Camera.main.WorldToViewportPoint(transform.position + Vector3.up * 2);
if ((up.x < 0 ||
up.y < 0 ||
up.x > 1 ||
up.y > 1 ||
up.z < 0) &&
(down.x < 0 ||
down.y < 0 ||
down.x > 1 ||
down.y > 1 ||
down.z < 0))
{
isAllowedToFire = false;
}
else
{
isAllowedToFire = true;
}
}
if (isAllowedToFire)
{
var burst = Behaviour.IsFightingUsingCovers ? CoveredFightingBursts : CoveredApproachBursts;
var isDumb = _state == AIState.fireInCover &&
(_stateTime <= burst.IntroDuration || _stateTime >= burst.IntroDuration + burst.Duration);
var isWalking = _state != AIState.takeCover && _state != AIState.approach && _state != AIState.retreat;
// Check if can fire right now.
if (Behaviour.CanFire &&
(!isWalking || _walkingBurstWait < WalkingBursts.Duration) &&
(!_situation.IsTargetCoverGood ||
(_state != AIState.hideInCover &&
(_state != AIState.takeCover || _motor.Cover == null))))
{
var aimPoint = transform.position;
if (_motor.IsInTallCover && _situation.IsTargetCoverGood)
{
if (_situation.TargetDirection < 0)
{
aimPoint = _motor.Cover.LeftCorner(transform.position.y, _motor.CoverSettings.CornerOffset.x);
}
else
{
aimPoint = _motor.Cover.RightCorner(transform.position.y, _motor.CoverSettings.CornerOffset.x);
}
}
// See if the motor can hit the standing enemy after potentially peeking.
if (AIUtil.IsInSight(this, aimPoint, _situation.ThreatStandingTopPosition))
{
if (_state == AIState.fireInCover)
{
_motor.InputAim();
}
if (!isDumb)
{
_motor.InputFire();
}
}
}
}
_lookPointTimer = 0;
}
}
else
{
_motor.SetFireTarget(_situation.ThreatGroundPosition);
_motor.SetLookTarget(_situation.ThreatGroundPosition);
_motor.SetBodyLookTarget(_situation.ThreatGroundPosition);
lookAround(_situation.ThreatGroundPosition - _motor.transform.position);
}
}
else
{
_motor.InputWeapon(0);
if (_state == AIState.patrol || _state == AIState.patrolPause)
{
Vector3 forward;
if (Waypoints.Length > 1)
{
var next = Waypoints[_situation.PatrolPoint];
forward = next.Position - transform.position;
if (forward.magnitude < 0.5f)
{
var previous = _situation.PatrolPoint == 0 ? Waypoints[Waypoints.Length - 1] : Waypoints[_situation.PatrolPoint - 1];
var line = next.Position - previous.Position;
if (Vector2.Dot(line, forward) > 0)
{
forward = line;
}
}
}
else
{
forward = transform.forward;
}
lookAround(forward);
}
else
{
_lookPointTimer = 0;
}
}
var positionToMoveTo = transform.position;
///
/// STATE MANAGEMENT
///
{
var updateSituationInDetail = false;
{
// Update the update delay timer.
_updateTimer -= Time.deltaTime;
if (_updateTimer < 0)
{
_updateTimer = Fighting.ReactionTime;
updateSituationInDetail = true;
}
}
// Update standing burst timer.
{
_walkingBurstWait += Time.deltaTime;
if (_walkingBurstWait > WalkingBursts.Duration + WalkingBursts.Wait)
{
_walkingBurstWait = 0;
}
}
{
_situation.Update(this, _previousSituation, updateSituationInDetail);
if (!isStateStillValid(_state, _stateTime, _situation, _situation))
{
updateSituation(calcState(_situation, _state, _stateTime));
}
}
}
///
/// WALK
///
if (!_motor.IsInCornerAimState)
{
if (_state == AIState.takeCover ||
_state == AIState.approach ||
_state == AIState.investigate ||
_state == AIState.retreat ||
_state == AIState.patrol ||
_state == AIState.avoidGrenade)
{
var toTarget = _situation.TargetPosition - transform.position;
// If patrolling, set the body to rotate towards the target.
if (_state == AIState.patrol)
{
if (toTarget.magnitude > 0.1f)
{
var normalized = toTarget.normalized;
var position = transform.position + normalized * 4;
var dot = Vector3.Dot(toTarget.normalized, _motor.transform.forward);
if (Waypoints[_situation.PatrolPoint].Run)
{
_motor.SetBodyLookTarget(position, 8);
}
else
{
if (dot > 0)
{
_motor.SetBodyLookTarget(position, 1.6f);
}
else if (dot > -0.5f)
{
_motor.SetBodyLookTarget(position, 2.5f);
}
else
{
_motor.SetBodyLookTarget(position, 4f);
}
}
}
}
// Move the last meter without using the agent.
if (toTarget.magnitude > 1.0f)
{
var vectorToAgent = _agent.nextPosition - transform.position;
var distanceToAgent = vectorToAgent.magnitude;
if (distanceToAgent > float.Epsilon)
{
vectorToAgent /= distanceToAgent;
}
// If agent moved too far, reset it.
if (distanceToAgent > 1f)
{
updateAgent(_situation.TargetPosition);
}
float walkSpeed;
if (_state == AIState.patrol && !Patrol.IsAlwaysRunning && (Waypoints.Length == 0 || !Waypoints[_situation.PatrolPoint].Run))
{
walkSpeed = 0.5f;
}
else
{
walkSpeed = 1.0f;
}
var point = _currentPathIndex + 1 < _pathLength ? _path[_currentPathIndex + 1] : _situation.TargetPosition;
var vectorToPoint = point - transform.position;
var distanceToPoint = vectorToPoint.magnitude;
if (distanceToPoint > float.Epsilon)
{
vectorToPoint /= distanceToPoint;
}
if (distanceToPoint < 0.1f && _currentPathIndex + 1 < _pathLength)
{
_currentPathIndex++;
}
_agent.speed = 0.1f;
_motor.InputMovement(new CharacterMovement(vectorToPoint, walkSpeed));
}
else
{
if (_state == AIState.takeCover)
{
_motor.InputImmediateCoverSearch();
_motor.InputTakeCover();
}
if (toTarget.magnitude > 0.05f)
{
_motor.InputMovement(new CharacterMovement(toTarget.normalized, 0.5f));
}
else
{
_motor.transform.position = _situation.TargetPosition;
}
}
}
}
}
/// <summary>
/// Updates the target situation to take cover. Returns true if a cover was found.
/// </summary>
public static bool TakeCover(AIController controller, ref AISituation situation)
{
var currentVectorToTarget = situation.ThreatGroundPosition - situation.CurrentPosition;
var currentDistanceToTarget = currentVectorToTarget.magnitude;
Cover result = null;
float resultPathDistance = 0;
int resultDirection = 0;
Vector3 resultPosition = situation.CurrentPosition;
var path = new NavMeshPath();
var corners = new Vector3[32];
var isAlreadyTooClose = currentDistanceToTarget <= controller.Distances.MinEnemy || currentDistanceToTarget <= controller.Cover.MinCoverToEnemyDistance;
var covers = new List <CoverItem>();
foreach (var collider in Physics.OverlapSphere(controller.transform.position, controller.Cover.MaxDistance, 0x1 << 8, QueryTriggerInteraction.Collide))
{
if (!collider.isTrigger)
{
continue;
}
var cover = CoverSearch.GetCover(collider.gameObject);
if (cover == null || cover == situation.CurrentCover)
{
continue;
}
var item = new CoverItem();
item.Cover = cover;
item.IsTall = cover.IsTall(controller.Motor.CoverSettings.TallThreshold);
if (item.IsTall)
{
item.Direction = cover.ClosestCornerTo(situation.CurrentPosition, controller.Motor.CoverSettings.CornerAimTriggerDistance, out item.Point);
}
else
{
item.Point = cover.ClosestPointTo(situation.CurrentPosition, controller.Motor.CoverSettings.LowSideEnterRadius, 0.3f);
}
if (float.IsNaN(item.Point.x) || float.IsNaN(item.Point.z))
{
continue;
}
item.Point.y = cover.Bottom;
item.Distance = Vector3.Distance(controller.transform.position, item.Point);
covers.Add(item);
}
foreach (var item in covers.OrderBy(o => o.Distance))
{
var isTall = item.IsTall;
var cover = item.Cover;
var point = item.Point;
var coverDirection = item.Direction;
if (!AIUtil.IsGoodAngle(controller, cover, point, situation.ThreatGroundPosition, isTall))
{
continue;
}
var distanceToTarget = Vector3.Distance(situation.ThreatGroundPosition, point);
if (distanceToTarget < controller.Distances.MinEnemy ||
distanceToTarget < controller.Cover.MinCoverToEnemyDistance)
{
continue;
}
if (situation.CurrentCover != null && Vector3.Distance(situation.CurrentPosition, point) < controller.Cover.MinSwitchDistance)
{
continue;
}
if ((controller.Health == null || controller.Health.Health > controller.Fighting.MinHealth))
{
if (isTall)
{
Vector3 aimPoint;
coverDirection = cover.ClosestCornerTo(point, -controller.Motor.CoverSettings.CornerOffset.x, out aimPoint);
if (!AIUtil.IsInSight(controller, aimPoint, situation.ThreatStandingTopPosition))
{
continue;
}
}
else if (!AIUtil.IsInSight(controller, point, situation.ThreatStandingTopPosition))
{
continue;
}
}
var distanceToOrigin = Vector3.Distance(situation.CurrentPosition, point);
if (situation.CurrentCover == null)
{
if (distanceToOrigin > controller.Cover.MaxDistance)
{
continue;
}
}
else
if (distanceToOrigin > controller.Cover.MaxSwitchDistance)
{
continue;
}
var areThereFriends = false;
{
var hasChangedPosition = false;
Vector3 side;
if (Vector3.Dot((point - situation.CurrentPosition).normalized, cover.Right) > 0)
{
side = cover.Right;
}
else
{
side = cover.Left;
}
do
{
hasChangedPosition = false;
if (AIUtil.IsCoverPositionTooCloseToFriends(cover, controller, point))
{
var next = point + side * 0.5f;
if (cover.IsInFront(next, false))
{
point = next;
hasChangedPosition = true;
}
else
{
areThereFriends = true;
}
}
}while (hasChangedPosition);
}
if (areThereFriends)
{
continue;
}
var isOk = false;
NavMesh.CalculatePath(situation.CurrentPosition, point, NavMesh.AllAreas, path);
float pathDistance = 0f;
var count = path.GetCornersNonAlloc(corners);
if (count < 2)
{
continue;
}
var isTooCloseToEnemy = false;
for (int i = 1; i < count; i++)
{
pathDistance += Vector3.Distance(corners[i - 1], corners[i]);
if (!isAlreadyTooClose)
{
if (Util.DistanceToSegment(situation.ThreatGroundPosition, corners[i - 1], corners[i]) <= controller.Distances.MinPassing)
{
isTooCloseToEnemy = true;
break;
}
}
}
if (isTooCloseToEnemy)
{
continue;
}
if (situation.CurrentCover == null)
{
isOk = result == null || pathDistance < resultPathDistance;
}
else if (controller.Health == null || controller.Health.Health > controller.Fighting.MinHealth)
{
isOk = (isAlreadyTooClose || distanceToTarget < currentDistanceToTarget) &&
(result == null || pathDistance < resultPathDistance);
}
else
{
isOk = distanceToTarget > currentDistanceToTarget && (result == null || pathDistance < resultPathDistance);
}
if (isOk)
{
result = cover;
resultPosition = point;
resultPathDistance = pathDistance;
resultDirection = coverDirection;
break;
}
}
situation.TargetDirection = resultDirection;
if (result == null)
{
if (situation.IsThreatInCover)
{
ApproachACovered(controller, ref situation);
}
else
{
ApproachAFree(controller, ref situation, controller.Agent, controller.Distances.MaxWalkingFight, true);
}
return(false);
}
else
{
situation.IsNewCover = true;
situation.TargetCover = result;
situation.TargetPosition = resultPosition;
return(true);
}
}
private void Update()
{
_isMoving = false;
if (_obstacle != null && _obstacle.enabled)
{
_obstacle.enabled = false;
}
if (_motor == null || !_motor.IsAlive)
{
if (_wasMoving)
{
Message("OnStopMoving");
_wasMoving = false;
}
_mode = Mode.none;
return;
}
if (_isCrouching)
{
_motor.InputCrouch();
}
if (_isAvoidingMover)
{
if (_avoidingTimer > float.Epsilon)
{
_avoidingTimer -= Time.deltaTime;
move(_avoidDirection, 1, false);
}
else
{
_isAvoidingMover = false;
}
}
if (_mode == Mode.none)
{
if (_wasMoving)
{
Message("OnStopMoving");
_wasMoving = false;
}
checkIncomingCollisions(Vector3.zero, 1);
return;
}
if (DebugDestination)
{
Debug.DrawLine(transform.position, _target, Color.blue);
}
if (DebugPath)
{
for (int i = 0; i < _pathLength - 1; i++)
{
if (i == _currentPathIndex)
{
Debug.DrawLine(_pathPoints[i], _pathPoints[i + 1], Color.cyan);
Debug.DrawLine(_pathPoints[i + 1], _pathPoints[i + 1] + Vector3.up, Color.cyan);
}
else
{
Debug.DrawLine(_pathPoints[i], _pathPoints[i + 1], Color.green);
}
}
}
var vector = _target - transform.position;
vector.y = 0;
var direction = vector.normalized;
var side = Vector3.Cross(direction, Vector3.up);
if (_futureCircleDirection == 0)
{
_circleWait = 0;
}
switch (_mode)
{
case Mode.inDirection:
if (!checkIncomingCollisions(_direction, _speed))
{
if (canMoveInDirection(_direction))
{
move(_direction, _speed, true);
}
_inDirectionLeft -= Time.deltaTime;
if (_inDirectionLeft <= float.Epsilon)
{
_mode = Mode.none;
}
}
break;
case Mode.toPosition:
var vectorToPath = Vector3.zero;
var isCloseToThePath = false;
var distanceToPath = 0f;
if (_currentPathIndex <= _pathLength - 1)
{
vectorToPath = Util.VectorToSegment(transform.position, _pathPoints[_currentPathIndex], _pathPoints[_currentPathIndex + 1]);
distanceToPath = vectorToPath.magnitude;
isCloseToThePath = distanceToPath < 0.5f;
}
if (!isCloseToThePath)
{
updatePath();
}
var isLastStepOnPartialPath = _currentPathIndex >= _pathLength - 2 && _path.status == NavMeshPathStatus.PathPartial;
if (_path.status != NavMeshPathStatus.PathInvalid && !_hasCheckedIfReachable)
{
if (_pathLength == 0 || Vector3.Distance(_pathPoints[_pathLength - 1], _positionToCheckIfReachable) >= 0.2f)
{
Message("OnPositionUnreachable", _positionToCheckIfReachable);
}
_hasCheckedIfReachable = true;
}
if (vector.magnitude >= 0.3f && !isLastStepOnPartialPath)
{
if (_path.status == NavMeshPathStatus.PathInvalid || _pathLength == 0)
{
updatePath();
}
var point = _currentPathIndex + 1 < _pathLength ? _pathPoints[_currentPathIndex + 1] : _target;
if (!AIUtil.IsPositionOnNavMesh(point))
{
updatePath();
}
direction = point - transform.position;
direction.y = 0;
var distanceToPoint = direction.magnitude;
if (distanceToPoint > float.Epsilon)
{
direction /= distanceToPoint;
}
if (!checkIncomingCollisions(direction, _speed))
{
if (distanceToPoint < 0.2f && _currentPathIndex + 1 < _pathLength)
{
var index = _currentPathIndex;
if (distanceToPoint > 0.07f && _currentPathIndex + 2 < _pathLength)
{
if (Vector3.Dot(point - transform.position, _pathPoints[_currentPathIndex + 2] - transform.position) <= 0.1f)
{
_currentPathIndex++;
}
}
else
{
_currentPathIndex++;
}
}
if (distanceToPath > 0.12f)
{
direction = (direction + vectorToPath).normalized;
}
if (Vector3.Dot(direction, _direction) < 0.9f)
{
updateDirection(direction, false);
}
move(direction, _speed, false);
}
}
else
{
if (vector.magnitude > 0.03f)
{
if (!checkIncomingCollisions(direction, _speed))
{
if (vector.magnitude < 0.2f)
{
_motor.InputImmediateCoverSearch();
transform.position = Util.Lerp(transform.position, _target, 6);
}
else
{
if (_motor.IsInCover)
{
move(direction, 1.0f, false);
}
else
{
move(direction, 0.5f, false);
}
}
}
}
else
{
_motor.transform.position = _target;
_mode = Mode.none;
}
}
break;
case Mode.fromPosition:
_pathLength = 0;
if (!checkIncomingCollisions(-direction, _speed))
{
direction = -direction;
if (canMoveInDirection(direction))
{
_motor.InputMovement(new CharacterMovement(direction, 1.0f));
_isMoving = true;
}
else
{
if (_side == 0)
{
if (Random.Range(0, 10) < 5 && _motor.IsFreeToMove(side, 0.5f, 0.25f))
{
_side = 1;
}
else
{
_side = -1;
}
}
if (!canMoveInDirection(side * _side))
{
if (!_motor.IsFreeToMove(-side * _side, 0.5f, 0.25f))
{
Message("OnMoveFromFail");
}
else
{
_side = -_side;
}
}
move(side * _side, 1.0f, true);
}
updateDirection(direction, false);
if (_isRunningAwayTemp)
{
_runningAwayFramesLeft--;
if (_runningAwayFramesLeft <= 0)
{
ToStopMoving();
}
}
}
break;
case Mode.circle:
_pathLength = 0;
if (_futureCircleDirection != 0)
{
if (_circleWait > float.Epsilon)
{
_circleWait -= Time.deltaTime;
}
if (_circleWait < float.Epsilon)
{
_circleWait = 0;
_side = _futureCircleDirection;
_futureCircleDirection = 0;
}
}
if (_futureCircleDirection == 0)
{
if (_side == 0)
{
if (Random.Range(0, 10) < 5 && canMoveInDirection(side))
{
_side = 1;
}
else
{
_side = -1;
}
}
if (!canMoveInDirection(side * _side))
{
if (!canMoveInDirection(-side * _side))
{
Message("OnCircleFail");
}
else
{
_futureCircleDirection = -_side;
_circleWait = CircleDelay;
}
}
direction = side * _side;
if (!checkIncomingCollisions(direction, _speed))
{
move(direction, 1.0f, true);
updateDirection(direction, false);
}
}
break;
}
if (_isMoving && !_wasMoving)
{
Message("OnMoving");
}
else if (!_isMoving && _wasMoving)
{
Message("OnStopMoving");
}
_wasMoving = _isMoving;
}
private bool isValidCover(Cover cover, Vector3 position, int direction, bool checkPath, bool avoidPivot = true)
{
if (cover == _unreachableCover)
{
return(false);
}
if (_isKeepingCloseTo && Vector3.Distance(position, _keepCloseTo.Position) > _keepCloseTo.Distance)
{
return(false);
}
if (!_hasPivot)
{
if (!AIUtil.IsCoverPositionFree(cover, position, 1, _actor))
{
return(false);
}
return(true);
}
if (!_hasCachedEnemies)
{
_cachedEnemyCount = 0;
_hasCachedEnemies = true;
var totalActorCount = AIUtil.FindActors(position, MinDefenselessDistance, _actor);
if (totalActorCount > 0)
{
var enemyCount = 0;
for (int i = 0; i < totalActorCount; i++)
{
if (AIUtil.Actors[i].Side != _actor.Side)
{
enemyCount++;
}
}
if (enemyCount > 0)
{
if (_cachedEnemies == null || _cachedEnemies.Length < enemyCount)
{
_cachedEnemies = new Actor[enemyCount];
}
var index = 0;
for (int i = 0; i < totalActorCount; i++)
{
if (AIUtil.Actors[i].Side != _actor.Side)
{
_cachedEnemies[index++] = AIUtil.Actors[i];
}
}
_cachedEnemyCount = index;
}
}
}
for (int i = 0; i < _cachedEnemyCount; i++)
{
var enemy = _cachedEnemies[i];
if (enemy.Side != _actor.Side)
{
var enemyPosition = enemy.transform.position;
var distance = Vector3.Distance(position, enemyPosition);
if (distance < AvoidDistance)
{
return(false);
}
if (!AIUtil.IsGoodAngle(MaxTallCoverThreatAngle,
MaxLowCoverThreatAngle,
cover,
position,
enemyPosition,
cover.IsTall))
{
return(false);
}
}
}
if (_isPivotThreat)
{
var distance = Vector3.Distance(position, _pivotPosition);
if (_hasMaxPivotDistance && distance > _maxPivotDistance)
{
return(false);
}
var aimPosition = position;
if (AIUtil.IsObstructed(aimPosition + (_actor.StandingTopPosition - transform.position),
_pivotPosition + Vector3.up * 2))
{
return(false);
}
}
else
{
var distance = Vector3.Distance(position, _pivotPosition);
if (_hasMaxPivotDistance && distance > _maxPivotDistance)
{
return(false);
}
if (!AIUtil.IsGoodAngle(MaxDefenseAngle,
MaxDefenseAngle,
cover,
_pivotPosition,
position,
cover.IsTall))
{
return(false);
}
}
if (!AIUtil.IsCoverPositionFree(cover, position, 1, _actor))
{
return(false);
}
if (checkPath)
{
if (NavMesh.CalculatePath(transform.position, position, 1, _path))
{
if (avoidPivot)
{
var count = _path.GetCornersNonAlloc(_corners);
for (int i = 0; i < count; i++)
{
var a = i == 0 ? transform.position : _corners[i - 1];
var b = _corners[i];
var closest = Util.FindClosestToPath(a, b, _pivotPosition);
if (Vector3.Distance(closest, _pivotPosition) < AvoidDistance)
{
return(false);
}
}
}
}
else
{
return(false);
}
}
return(true);
}
private bool verify(Vector3 position)
{
var distance = Vector3.Distance(transform.position, position);
return((_cover != null && AIUtil.IsInSight(_actor, position + Vector3.up * VerifyHeight, _verifyDistance, FieldOfView)) || distance < VerifyRadius || (distance < _verifyDistance && _verifyDistance < VerifyRadius));
}
/// <summary>
/// Told by the brains to investigate a position.
/// </summary>
/// <param name="position"></param>
public void ToInvestigatePosition(Vector3 position)
{
_isInvestigating = true;
_position = position;
_cover = null;
var minDistance = 0f;
for (int i = 0; i < Physics.OverlapSphereNonAlloc(position, CoverSearchDistance, _colliders, 0x1 << 8, QueryTriggerInteraction.Collide); i++)
{
var cover = CoverSearch.GetCover(_colliders[i].gameObject);
if (cover != null)
{
var point = cover.ClosestPointTo(position, 0.3f, 0.3f);
var distance = Vector3.Distance(position, point);
if (distance < minDistance || _cover == null)
{
_cover = cover;
_position = point;
minDistance = distance;
}
}
}
_verifyDistance = Util.GetViewDistance(_position, VerifyDistance, true);
if (_cover == null)
{
_hasReachedCoverLine = false;
if (isActiveAndEnabled)
{
Message("ToWalkTo", position);
Message("OnInvestigationStart");
}
}
else
{
var vector = _position - transform.position;
_hasReachedCoverLine = Vector3.Dot(_cover.Forward, vector) > 0;
if (_hasReachedCoverLine)
{
if (isActiveAndEnabled)
{
Message("ToWalkTo", _position);
Message("OnInvestigationStart");
}
}
else
{
var left = _cover.LeftCorner(_cover.Bottom, CoverOffset) - _cover.Forward * 1.0f;
var right = _cover.RightCorner(_cover.Bottom, CoverOffset) - _cover.Forward * 1.0f;
AIUtil.Path(ref _path, transform.position, left);
var leftLength = 0f;
if (_path.status == NavMeshPathStatus.PathInvalid)
{
leftLength = 999999f;
}
else
{
for (int i = 1; i < _path.GetCornersNonAlloc(_corners); i++)
{
leftLength += Vector3.Distance(_corners[i], _corners[i - 1]);
}
}
AIUtil.Path(ref _path, transform.position, right);
var rightLength = 0f;
if (_path.status == NavMeshPathStatus.PathInvalid)
{
rightLength = 999999f;
}
else
{
for (int i = 1; i < _path.GetCornersNonAlloc(_corners); i++)
{
rightLength += Vector3.Distance(_corners[i], _corners[i - 1]);
}
}
if (leftLength < rightLength)
{
_approachPosition = left;
}
else
{
_approachPosition = right;
}
var distance = Vector3.Distance(_approachPosition, _position);
if (distance + VerifyRadius > _verifyDistance)
{
_approachPosition = _position + Vector3.Normalize(_approachPosition - _position) * (_verifyDistance + VerifyRadius - 0.1f);
}
if (isActiveAndEnabled)
{
Message("ToWalkTo", _approachPosition);
Message("OnInvestigationStart");
}
}
}
}
/// <summary>
/// Returns an updated situation struct.
/// </summary>
public void Update(AIController controller, AISituation previous, bool updateInDetail)
{
if (!IsAlerted)
{
HasInvestigatedTheLatestAlert = false;
}
else if (Threat == null & Vector3.Distance(CurrentPosition, ThreatGroundPosition) < controller.Distances.ThreatInvestigation)
{
MarkInvestigated();
}
if (HasAnInvestigatedAlert)
{
InvestigatedAlertAge += Time.deltaTime;
}
// 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;
ThreatGroundPosition = grenade.transform.position;
}
}
}
}
}
// Check friends and enemies.
if (Threat == null || (!IsAlerted && !IsGettingAlerted))
{
var minEnemyInfoTimer = controller.View.EnemySustainTime;
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.Situation.NoThreatTimer < actor.AI.View.EnemySustainTime &&
minEnemyInfoTimer > actor.AI.Situation.NoThreatTimer)
{
TakeEnemyState(actor.AI);
}
}
}
}
}
}
// Check friends if they had investigated the same position
if (IsAlerted && Threat == null && !HasInvestigatedTheLatestAlert)
{
foreach (var friend in Actors.All)
{
if (friend != controller.Actor &&
friend.Side == controller.Actor.Side &&
friend.AI.IsAlerted &&
friend.AI.Situation.HasAnInvestigatedAlert &&
friend.AI.Situation.InvestigatedAlertAge < 10 &&
Vector3.Distance(friend.transform.position, controller.transform.position) < controller.View.CommunicationDistance &&
Vector3.Distance(friend.AI.Situation.InvestigatedThreatPosition, ThreatGroundPosition) < controller.Distances.ThreatInvestigation)
{
MarkInvestigated();
break;
}
}
}
// Check threats
if (Threat == null)
{
var minDist = 100000f;
foreach (var alert in Alerts.All)
{
var dist = Vector3.Distance(controller.transform.position, alert.Position);
if (dist < alert.Range)
{
if (dist < minDist)
{
minDist = dist;
IsAlerted = true;
ThreatGroundPosition = alert.Position;
HasAnInvestigatedAlert = false;
HasInvestigatedTheLatestAlert = false;
}
}
}
}
// 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 (controller.Health != null && Threat != null && Threat.IsAttacking)
{
IsRetreating = IsAlerted && controller.Health.Health <= controller.Fighting.MinHealth;
}
else
{
IsRetreating = false;
}
if (IsAlerted)
{
var couldSeeTheEnemy = CanSeeTheThreat;
CanSeeTheThreat = false;
if (Threat != null)
{
if (couldSeeTheEnemy || updateInDetail)
{
CanSeeTheThreat = AIUtil.IsInSight(controller, Threat.TopPosition);
}
if (CanSeeTheThreat)
{
ReadEnemyState(Threat);
}
else
{
NoThreatTimer += Time.deltaTime;
if (updateInDetail)
{
// Check friends and enemies.
foreach (var friend in Actors.All)
{
if (friend != controller.Actor &&
friend.Side == controller.Actor.Side &&
friend.AI != null &&
friend.AI.IsAlerted &&
friend.AI.Situation.CanSeeTheThreat &&
friend.AI.Situation.Threat == Threat)
{
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(controller.Motor.CoverSettings.TallThreshold)) &&
!AIUtil.IsCoverPositionTooCloseToFriends(TargetCover, controller, TargetPosition);
}
if (updateInDetail)
{
if (TargetCover != null && TargetCover.IsTall(controller.Motor.CoverSettings.TallThreshold))
{
Vector3 aimPoint;
if (TargetDirection < 0)
{
aimPoint = TargetCover.LeftCorner(0, controller.Motor.CoverSettings.CornerOffset.x);
}
else
{
aimPoint = TargetCover.RightCorner(0, controller.Motor.CoverSettings.CornerOffset.x);
}
CanSeeFromTargetPosition = AIUtil.IsInSight(controller, aimPoint, ThreatStandingTopPosition);
}
else
{
CanSeeFromTargetPosition = AIUtil.IsInSight(controller, TargetPosition, ThreatStandingTopPosition);
}
}
}
else
{
if (TargetCover != null && updateInDetail)
{
IsTargetCoverGood = !AIUtil.IsCoverPositionTooCloseToFriends(TargetCover, controller, TargetPosition);
}
CanSeeFromTargetPosition = true;
}
}
/// <summary>
/// Updates the target situation to approach an enemy that's not in cover.
/// </summary>
public static void ApproachAFree(AIController controller, ref AISituation situation, NavMeshAgent agent, float maxDistance, bool approachStanding)
{
situation.TargetCover = null;
situation.TargetPosition = situation.ThreatGroundPosition;
var path = new NavMeshPath();
agent.CalculatePath(situation.ThreatGroundPosition, path);
var corners = new Vector3[16];
var count = path.GetCornersNonAlloc(corners);
if (count < 2)
{
return;
}
var i = 0;
var p0 = corners[i];
var p1 = corners[i + 1];
var f = 1f;
var targetPosition = approachStanding ? situation.ThreatStandingTopPosition : situation.ThreatGroundPosition;
{
var distLeft = Vector3.Distance(controller.transform.position, situation.ThreatGroundPosition);
while (distLeft > maxDistance)
{
var pd = Vector3.Distance(p0, p1);
var left = distLeft - maxDistance;
distLeft -= pd;
if (pd >= left)
{
f = left / pd;
break;
}
else
{
i++;
if (i + 1 >= count)
{
i = 0;
break;
}
else
{
p0 = corners[i];
p1 = corners[i + 1];
}
}
}
}
while (i + 1 < count)
{
var p = p0 + (p1 - p0) * f;
if (AIUtil.IsInSight(controller, p, targetPosition))
{
situation.TargetPosition = p;
break;
}
f += 0.2f;
if (f >= 1f)
{
if (AIUtil.IsInSight(controller, p1, targetPosition))
{
situation.TargetPosition = p1;
break;
}
f = 0;
i++;
}
}
}
private void Update()
{
if (!_actor.IsAlive)
{
return;
}
_wait -= Time.deltaTime;
if (_wait > float.Epsilon)
{
_oldVisible.Clear();
_oldVisibleHash.Clear();
for (int i = 0; i < _visible.Count; i++)
{
var actor = _visible[i];
if (actor != null)
{
_oldVisible.Add(actor);
_oldVisibleHash.Add(actor);
}
}
for (int i = 0; i < _oldVisible.Count; i++)
{
var actor = _oldVisible[i];
if (!actor.IsAlive)
{
_visible.Remove(actor);
_visibleHash.Remove(actor);
if (!_seenDeadHash.Contains(actor))
{
_seenDeadHash.Add(actor);
Message("OnSeeDeath", actor);
}
}
}
return;
}
_wait = Random.Range(UpdateDelay * 0.8f, UpdateDelay * 1.2f);
_oldVisible.Clear();
_oldVisibleHash.Clear();
for (int i = 0; i < _visible.Count; i++)
{
var actor = _visible[i];
if (actor != null)
{
_oldVisible.Add(actor);
_oldVisibleHash.Add(actor);
}
}
_visible.Clear();
_visibleHash.Clear();
var count = AIUtil.FindActorsIncludingDead(_actor.TopPosition, Distance, _actor);
for (int i = 0; i < count; i++)
{
var actor = AIUtil.Actors[i];
if (CheckVisibility(actor))
{
if (actor.IsAlive)
{
_visible.Add(actor);
_visibleHash.Add(actor);
}
else
{
if (!_seenDeadHash.Contains(actor))
{
_seenDeadHash.Add(actor);
Message("OnSeeDeath", actor);
}
// A hack, should fix in some other way
else if (_brain != null && _brain.Threat == actor)
{
_brain.OnSeeDeath(actor);
}
}
}
}
for (int i = 0; i < _oldVisible.Count; i++)
{
var actor = _oldVisible[i];
if (!_visibleHash.Contains(actor))
{
Message("OnUnseeActor", actor);
}
}
for (int i = 0; i < _visible.Count; i++)
{
var actor = _visible[i];
if (!_oldVisibleHash.Contains(actor))
{
Message("OnSeeActor", actor);
}
}
}
private void Update()
{
if ((Disabler != null && Disabler.activeSelf) || EventSystem.current.IsPointerOverGameObject())
{
hideMarker();
hideOutline(ref _targetOutline);
hideSphere();
if (Target == null)
{
hideOutline(ref _performerOutline);
}
else
{
showOutline(ref _performerOutline, Target, SelectColor);
}
return;
}
var camera = _camera;
if (camera == null)
{
camera = Camera.main;
}
if (camera == null)
{
return;
}
var mouse = Input.mousePosition;
mouse.z = camera.nearClipPlane;
var near = camera.ScreenToWorldPoint(mouse);
mouse.z = camera.farClipPlane;
var far = camera.ScreenToWorldPoint(mouse);
var hit = Util.GetClosestNonActorHit(near, far, 1);
var targetActor = AIUtil.FindClosestActorIncludingDead(hit, 0.7f);
var isMouseDown = Input.GetMouseButtonDown(0);
if (Target == null)
{
if (targetActor != null && targetActor.Side == Side && targetActor.IsAlive)
{
showOutline(ref _performerOutline, targetActor, PickColor);
if (isMouseDown)
{
Target = targetActor;
isMouseDown = false;
}
}
else
{
hideOutline(ref _performerOutline);
}
}
else if (Target != null)
{
showOutline(ref _performerOutline, Target, SelectColor);
}
else
{
hideOutline(ref _performerOutline);
}
AIActions targetActions = null;
if (Target != null)
{
targetActions = Target.GetComponent <AIActions>();
}
if (targetActions)
{
var target = hit;
AIUtil.GetClosestStandablePosition(ref target);
var isActor = targetActor != null;
var isSelf = isActor && targetActor == Target;
var isAlly = isActor && targetActor.Side == Target.Side;
var isEnemy = isActor && targetActor.Side != Target.Side;
var isDead = isActor && !targetActor.IsAlive;
var isLocation = Vector3.Distance(target, hit) < 0.5f;
AIAction action = null;
var isTargetingActor = false;
if (_forcedAction != null)
{
if (_forcedAction.CanTargetGround && isLocation)
{
action = _forcedAction;
}
else if ((!isDead || !_forcedAction.ShouldIgnoreDead) &&
((isSelf && _forcedAction.CanTargetSelf) ||
(isAlly && _forcedAction.CanTargetAlly) ||
(isEnemy && _forcedAction.CanTargetEnemy)))
{
action = _forcedAction;
isTargetingActor = true;
}
}
else
{
for (int i = 0; i < targetActions.Actions.Length; i++)
{
var a = targetActions.Actions[i];
if (a.CanTargetGround && isLocation)
{
action = a;
break;
}
else if ((!isDead || !a.ShouldIgnoreDead) &&
((isSelf && a.CanTargetSelf) ||
(isAlly && a.CanTargetAlly) ||
(isEnemy && a.CanTargetEnemy)))
{
action = a;
isTargetingActor = true;
break;
}
}
}
if (action != null)
{
if (isTargetingActor)
{
if (isSelf)
{
hideOutline(ref _performerOutline);
}
showOutline(ref _targetOutline, targetActor, action.UIColor);
hideMarker();
hideSphere();
}
else
{
if (action.UIRadius > 0.001f)
{
showSphere(target, action.UIColor, action.UIRadius);
hideOutline(ref _targetOutline);
hideMarker();
}
else
{
showMarker(target, action.UIColor);
hideOutline(ref _targetOutline);
hideSphere();
}
}
}
if (isMouseDown)
{
isMouseDown = false;
if (action != null)
{
if (action.CanTargetGround)
{
targetActions.Execute(action, target);
}
else
{
targetActions.Execute(action, targetActor);
}
if (_forcedAction != null)
{
_forcedAction = null;
}
}
Target = null;
}
else if (Input.GetMouseButtonDown(1))
{
Target = null;
}
}
else
{
hideOutline(ref _targetOutline);
hideMarker();
hideSphere();
}
}
private void Update()
{
if (!_actor.IsAlive)
{
return;
}
var wantsToAlwaysAim = AlwaysAim && _motor.Cover == null;
if (wantsToAlwaysAim)
{
Equip(_motor);
}
if (_motor.Gun == null)
{
return;
}
if (_isReloading)
{
_isReloading = !_motor.IsGunReady;
}
else if (_motor.Gun != null && _motor.Gun.IsClipEmpty)
{
_isReloading = true;
_motor.InputReload();
}
var isObstructed = false;
if (_isFiring && _isAimingAtAPosition)
{
var origin = transform.position;
if (_motor.Cover != null && _motor.Cover.IsTall)
{
if (_motor.CoverDirection > 0 && _motor.IsNearRightCorner)
{
origin = _motor.Cover.RightCorner(transform.position.y, _motor.CoverSettings.CornerOffset.x);
}
else if (_motor.CoverDirection < 0 && _motor.IsNearLeftCorner)
{
origin = _motor.Cover.LeftCorner(transform.position.y, _motor.CoverSettings.CornerOffset.x);
}
}
var start = origin + Vector3.up * 2;
var distance = Vector3.Distance(start, _aim);
if (distance > 1.5f)
{
isObstructed = AIUtil.IsObstructed(start, _aim, distance - 1.5f);
}
}
if (_motor.Cover == null && (_isAiming || wantsToAlwaysAim) && !_isReloading)
{
_motor.InputAim();
}
if (_isFiring && !_isReloading && !isObstructed)
{
var cycleDuration = _motor.Cover != null ? CoverBursts.CycleDuration : Bursts.CycleDuration;
if (_fireCycle >= cycleDuration)
{
if (_isFiringABurst)
{
_gunBurstsWereCalculatedFor = _motor.Gun;
_burstBulletCount = _bulletCountAtStart - _motor.Gun.Clip;
}
_isFiringABurst = false;
_fireCycle -= cycleDuration;
if (_gunBurstsWereCalculatedFor == _motor.Gun && _motor.Gun.Clip < _burstBulletCount)
{
_isReloading = true;
_motor.InputReload();
}
}
if (_motor.Cover != null)
{
if (_fireCycle >= CoverBursts.Wait)
{
_motor.InputAim();
if (_fireCycle >= CoverBursts.Wait + CoverBursts.IntroDuration &&
_fireCycle < CoverBursts.CycleDuration - CoverBursts.OutroDuration)
{
if (!_isFiringABurst)
{
_bulletCountAtStart = _motor.Gun.Clip;
_isFiringABurst = true;
}
if (_motor.IsGunReady)
{
_motor.InputFireOnCondition(_actor.Side);
}
}
}
}
else
{
_motor.InputAim();
if (_fireCycle >= Bursts.Wait)
{
if (!_isFiringABurst)
{
_bulletCountAtStart = _motor.Gun.Clip;
_isFiringABurst = true;
}
if (_motor.IsGunReady)
{
_motor.InputFireOnCondition(_actor.Side);
}
}
}
_fireCycle += Time.deltaTime;
}
else
{
_fireCycle = 0;
_isFiringABurst = false;
}
}
private bool checkIncomingCollisions(Vector3 ownMovement, float speed)
{
var count = AIUtil.FindActors(transform.position, ObstructionRadius, _actor);
var ownMovementMagnitude = ownMovement.magnitude;
var hasOwnMovement = ownMovementMagnitude > 0.25f;
var ownDirection = ownMovement / ownMovementMagnitude;
var closestDot = 0f;
var closestVector = Vector3.zero;
var closestDirection = Vector3.zero;
var closestPosition = Vector3.zero;
var isClosestPrimary = false;
var isClosestStatic = false;
var hasClosest = false;
for (int i = 0; i < count; i++)
{
var other = AIUtil.Actors[i];
if (other.Side != _actor.Side && other.IsAggressive && _actor.IsAggressive)
{
continue;
}
Vector3 velocity;
float magnitude;
var movement = _movements.ContainsKey(other) ? _movements[other] : null;
var isStatic = false;
if (movement != null && movement._isAvoidingMover)
{
velocity = movement._avoidDirection;
magnitude = 1;
}
else
{
velocity = other.Motor.MovementDirection;
magnitude = velocity.magnitude;
if (magnitude < 0.1f)
{
var body = other.Body;
if (body == null)
{
continue;
}
velocity = body.velocity;
magnitude = velocity.magnitude;
if (magnitude < 0.1f)
{
if (hasOwnMovement)
{
isStatic = true;
velocity = -ownMovement;
magnitude = 1;
}
else
{
continue;
}
}
}
}
var direction = velocity / magnitude;
if (hasOwnMovement && Vector3.Dot(ownDirection, direction) > -0.5f)
{
continue;
}
var vector = (transform.position - other.transform.position).normalized;
var dot = Vector3.Dot(direction, vector);
if (dot < 0.7f)
{
continue;
}
var isPrimary = (movement == null ? true : !movement._isAvoidingMover) && !isStatic;
if (!hasClosest || (isClosestStatic && !isStatic) || (isPrimary && !isClosestPrimary) || (isPrimary && dot > closestDot) || (!isPrimary && !isClosestPrimary && dot > closestDot))
{
hasClosest = true;
isClosestPrimary = isPrimary;
isClosestStatic = isStatic;
closestPosition = other.transform.position;
closestDirection = direction;
closestVector = vector;
closestDot = dot;
}
}
if (hasClosest)
{
if (!isClosestPrimary && !isClosestStatic && !hasOwnMovement && canMoveInDirection(closestVector))
{
return(avoid(closestVector, speed));
}
var point = Util.FindClosestToPath(closestPosition, closestPosition + closestDirection * 100, transform.position);
var vector = transform.position - point;
var distance = vector.magnitude;
if (distance < 0.1f)
{
var right = Vector3.Cross(closestVector, Vector3.up);
var left = -right;
if (hasOwnMovement && isClosestStatic)
{
right = (right + ownMovement).normalized;
left = (left + ownMovement).normalized;
}
if (canMoveInDirection(right))
{
return(avoid(right, speed));
}
if (canMoveInDirection(left))
{
return(avoid(left, speed));
}
}
else
{
var direction = vector / distance;
if (hasOwnMovement && isClosestStatic)
{
direction = (direction + ownMovement).normalized;
}
if (canMoveInDirection(direction))
{
return(avoid(direction, speed));
}
}
if (isClosestPrimary && !isClosestStatic && !hasOwnMovement && canMoveInDirection(closestVector))
{
return(avoid(closestVector, speed));
}
}
return(false);
}
private void Update()
{
if (_autoWait > float.Epsilon)
{
_autoWait -= Time.deltaTime;
}
if (_checkWait > float.Epsilon)
{
_checkWait -= Time.deltaTime;
}
if (_coverTimer > float.Epsilon)
{
_coverTimer -= Time.deltaTime;
}
if (_active != null && (!_active.Update() || (!_active.HasNoTimeout && (Time.timeSinceLevelLoad - _actionStart) > Timeout)))
{
end();
}
if (_actor.Cover == null)
{
_isInCover = false;
_coverTimer = 0;
}
else if (!_isInCover)
{
_coverTimer = CoverDelay;
_isInCover = true;
}
if (_active == null &&
_autoWait <= float.Epsilon &&
_checkWait <= float.Epsilon &&
_brain.enabled &&
_brain.State != FighterState.process &&
_actor.IsAlive &&
_coverTimer <= float.Epsilon &&
(!WaitForCoverActions || !_isTakingCover))
{
_checkWait = 0.5f;
_nearbyActors.Clear();
{
var count = AIUtil.FindActorsIncludingDead(transform.position, AutoDistance);
for (int i = 0; i < count; i++)
{
_nearbyActors.Add(AIUtil.Actors[i]);
}
}
var canUseAttackAction = !AutoAttackOnlyFromCover || _actor.Cover != null;
AIAction bestSingleAction = null;
Actor bestSingleActionTarget = null;
///////////////////////////////////////////////////////
//
// CONSIDER MULTIPLE TARGET ACTIONS
//
///////////////////////////////////////////////////////
AIAction bestMultipleAction = null;
int bestMultipleActionTargetCount = 0;
for (int i = 0; i < Actions.Length; i++)
{
var action = Actions[i];
if (action.Wait > float.Epsilon || !action.Auto || action.NeedsSingleTargetActor || action.NeedsTargetLocation || action.NeedsOnlySelf)
{
continue;
}
int count = 0;
for (int j = 0; j < Actors.Count; j++)
{
var actor = Actors.Get(j);
if (!actor.IsAlive && action.ShouldIgnoreDead)
{
continue;
}
if (actor.Side == _actor.Side)
{
if (((actor == _actor && action.CanTargetSelf) || action.CanTargetAlly) && action.IsNeededFor(actor))
{
count++;
}
}
else if (canUseAttackAction && action.CanTargetEnemy && action.IsNeededFor(actor) && (!AutoAttackOnlyFromCover || !action.WillMoveForActor(actor)))
{
count++;
}
}
if (count > bestMultipleActionTargetCount)
{
bestMultipleAction = action;
bestMultipleActionTargetCount = count;
}
}
if (bestMultipleAction != null)
{
_autoWait = AutoCooldown;
Execute(bestMultipleAction);
return;
}
///////////////////////////////////////////////////////
//
// CONSIDER SELF ACTIONS
//
///////////////////////////////////////////////////////
for (int i = 0; i < Actions.Length; i++)
{
var action = Actions[i];
if (action.Wait > float.Epsilon || !action.Auto || !action.NeedsOnlySelf)
{
continue;
}
if (action.CanTargetSelf && action.IsNeededFor(_actor))
{
if (_actor == Priority)
{
_autoWait = AutoCooldown;
Execute(action, _actor);
return;
}
bestSingleAction = action;
bestSingleActionTarget = _actor;
break;
}
}
///////////////////////////////////////////////////////
//
// CONSIDER SINGLE TARGET ACTIONS
//
///////////////////////////////////////////////////////
for (int i = 0; i < Actions.Length; i++)
{
var action = Actions[i];
if (action.Wait > float.Epsilon || !action.Auto || !action.NeedsSingleTargetActor)
{
continue;
}
Actor best = null;
var bestDistance = 0f;
var isBestSelf = false;
for (int j = 0; j < _nearbyActors.Count; j++)
{
var actor = _nearbyActors[j];
if (!actor.IsAlive && action.ShouldIgnoreDead)
{
continue;
}
if (actor == _actor)
{
if (action.CanTargetSelf && action.IsNeededFor(actor))
{
if (actor == Priority)
{
_autoWait = AutoCooldown;
Execute(action, actor);
return;
}
if (best == null)
{
best = actor;
bestDistance = 0;
isBestSelf = true;
}
}
}
else if (actor.Side == _actor.Side)
{
if (action.CanTargetAlly && action.IsNeededFor(actor))
{
if (actor == Priority)
{
_autoWait = AutoCooldown;
Execute(action, actor);
return;
}
var distance = Vector3.Distance(transform.position, actor.transform.position);
if (best == null || isBestSelf || distance < bestDistance)
{
best = actor;
bestDistance = distance;
isBestSelf = false;
}
}
}
else if (canUseAttackAction && action.CanTargetEnemy && action.IsNeededFor(actor) && (!AutoAttackOnlyFromCover || !action.WillMoveForActor(actor)))
{
if (actor == Priority)
{
_autoWait = AutoCooldown;
Execute(action, actor);
return;
}
var distance = Vector3.Distance(transform.position, actor.transform.position);
if (best == null || isBestSelf || distance < bestDistance)
{
best = actor;
bestDistance = distance;
isBestSelf = false;
}
}
}
if (best != null)
{
bestSingleAction = action;
bestSingleActionTarget = best;
break;
}
}
///////////////////////////////////////////////////////
//
// CONSIDER AREA ACTIONS
//
///////////////////////////////////////////////////////
for (int i = 0; i < Actions.Length; i++)
{
var action = Actions[i];
if (action.Wait > float.Epsilon || !action.Auto || !action.NeedsTargetLocation)
{
continue;
}
_possibleActionTargets.Clear();
for (int j = 0; j < _nearbyActors.Count; j++)
{
var actor = _nearbyActors[j];
if (!actor.IsAlive && action.ShouldIgnoreDead)
{
continue;
}
if (actor == _actor)
{
if (action.CanTargetSelf && action.IsNeededFor(actor))
{
_possibleActionTargets.Add(actor);
}
}
else if (actor.Side == _actor.Side)
{
if (action.CanTargetAlly && action.IsNeededFor(actor))
{
_possibleActionTargets.Add(actor);
}
}
else if (canUseAttackAction && action.CanTargetEnemy && action.IsNeededFor(actor))
{
_possibleActionTargets.Add(actor);
}
}
if (_possibleActionTargets.Count == 0 || (_possibleActionTargets.Count == 1 && bestSingleAction != null))
{
continue;
}
if (action.UIRadius > float.Epsilon)
{
var radius = action.UIRadius;
var steps = (int)(2 * AutoDistance / radius);
var hasBest = false;
var bestPosition = Vector3.zero;
var bestDistance = 0f;
var bestActorCount = 0;
var bestHasPriority = false;
for (int x = -steps / 2; x < steps / 2; x++)
{
for (int y = -steps / 2; y < steps / 2; y++)
{
var position = transform.position + new Vector3(x * action.UIRadius, 0, y * radius);
var distance = Vector3.Distance(position, transform.position);
if (distance > AutoDistance)
{
continue;
}
if (AutoAttackOnlyFromCover && action.CanTargetEnemy && action.WillMoveForPosition(position))
{
continue;
}
var actorCount = 0;
var hasPriority = false;
for (int j = 0; j < _possibleActionTargets.Count; j++)
{
var a = _possibleActionTargets[j];
if (Vector3.Distance(position, a.transform.position) < radius)
{
actorCount++;
if (a == Priority)
{
hasPriority = true;
}
}
}
if (actorCount > 0)
{
var isBetter = false;
if (!hasBest)
{
isBetter = true;
}
else if (hasPriority && !bestHasPriority)
{
isBetter = false;
}
else if (!bestHasPriority)
{
if (actorCount > bestActorCount)
{
isBetter = true;
}
else if (actorCount == bestActorCount)
{
isBetter = distance < bestDistance;
}
}
if (isBetter)
{
hasBest = true;
bestPosition = position;
bestDistance = distance;
bestHasPriority = hasPriority;
bestActorCount = actorCount;
}
}
}
}
if (hasBest &&
(bestSingleAction == null || bestActorCount > 1))
{
_autoWait = AutoCooldown;
Execute(action, bestPosition);
return;
}
}
}
///////////////////////////////////////////////////////
//
// EXECUTE BEST SINGLE IF NO AREA POSSIBLE
//
///////////////////////////////////////////////////////
if (bestSingleAction != null)
{
_autoWait = AutoCooldown;
Execute(bestSingleAction, bestSingleActionTarget);
}
///////////////////////////////////////////////////////
//
// CONSIDER NON-TARGET ACTIONS
//
///////////////////////////////////////////////////////
for (int i = 0; i < Actions.Length; i++)
{
var action = Actions[i];
if (action.Wait > float.Epsilon || !action.Auto || action.CanTargetAny || action.CanTargetGround || action.UIRadius > float.Epsilon || action.CanTargetMultiple || action.NeedsOnlySelf)
{
continue;
}
_autoWait = AutoCooldown;
Execute(action);
return;
}
}
}
private void consider(Cover cover, Vector3 position, int direction, Vector3 observer, float maxDistance)
{
if (float.IsNaN(position.x) || float.IsNaN(position.z))
{
return;
}
CoverItem item = new CoverItem();
item.Cover = cover;
item.Position = position;
item.Position.y = cover.Bottom;
item.Distance = Vector3.Distance(observer, item.Position);
item.Direction = direction;
var distanceToObserver = Vector3.Distance(observer, item.Position);
if (distanceToObserver > maxDistance)
{
return;
}
var areThereOthers = false;
const float threshold = 3;
if (cover.IsTall)
{
if (!AIUtil.IsCoverPositionFree(cover, item.Position, threshold, null))
{
areThereOthers = true;
}
}
else
{
var hasChangedPosition = false;
Vector3 side;
if (Vector3.Dot((item.Position - observer).normalized, cover.Right) > 0)
{
side = cover.Right;
}
else
{
side = cover.Left;
}
do
{
hasChangedPosition = false;
if (!AIUtil.IsCoverPositionFree(cover, item.Position, threshold, null))
{
var next = item.Position + side * 0.5f;
if (cover.IsInFront(next, false))
{
item.Position = next;
hasChangedPosition = true;
}
else
{
areThereOthers = true;
}
}
}while (hasChangedPosition);
}
if (areThereOthers)
{
return;
}
Items.Add(item);
}
private static void debugAI(Transform transform)
{
#if UNITY_EDITOR
var motor = transform.GetComponent <CharacterMotor>();
if (motor == null || !motor.IsAlive)
{
return;
}
var ai = transform.GetComponent <AIController>();
if (ai == null)
{
return;
}
var position = transform.position + Vector3.up * 2;
var offset = -8;
DebugText.Draw(ai.State.ToString(), position, 0, offset);
offset += 16;
DebugText.Draw(ai.StateReason.ToString(), position, 0, offset);
offset += 16;
if (ai.IsAlerted)
{
if (ai.Situation.WouldLikeToRetreat)
{
DebugText.Draw("Would like to retreat", position, 0, offset, Color.yellow);
offset += 16;
}
if (motor.Target != null)
{
var actor = motor.Target.GetComponent <Actor>();
if (actor != null && actor.Side == ai.Actor.Side)
{
DebugText.Draw("Is aiming at a friend", position, 0, offset, Color.red);
offset += 16;
}
}
if (ai.Situation.IsAllowedToBeAggressive)
{
DebugText.Draw("Is aggressive", position, 0, offset, Color.green);
offset += 16;
}
if (ai.IsAiming)
{
DebugText.Draw("Is aiming", position, 0, offset, Color.cyan);
offset += 16;
}
if (ai.Situation.Threat != null)
{
if (ai.Situation.CanSeeTheThreat)
{
Debug.DrawLine(ai.Situation.CurrentPosition, ai.Situation.ThreatGroundPosition, Color.green);
}
else
{
Debug.DrawLine(ai.Situation.CurrentPosition, ai.Situation.ThreatGroundPosition, Color.red);
}
}
else
{
Debug.DrawLine(ai.Situation.CurrentPosition, ai.Situation.ThreatGroundPosition, Color.red);
}
}
if (AIUtil.IsMovingState(ai.State))
{
Debug.DrawLine(ai.Situation.CurrentPosition, ai.Situation.TargetPosition, Color.blue);
}
#endif
}