void _setTargetLocation(T owner)
{
if (owner == null)
{
return;
}
if (owner.HasUnitState(UnitState.Root | UnitState.Stunned))
{
return;
}
if (owner.IsMovementPreventedByCasting())
{
owner.CastStop();
return;
}
owner.AddUnitState(UnitState.FleeingMove);
float x, y, z;
_getPoint(owner, out x, out y, out z);
Position mypos = owner.GetPosition();
bool isInLOS = Global.VMapMgr.isInLineOfSight(owner.GetMapId(), mypos.posX, mypos.posY, mypos.posZ + 2.0f, x, y, z + 2.0f);
if (!isInLOS)
{
i_nextCheckTime.Reset(200);
return;
}
PathGenerator path = new PathGenerator(owner);
path.SetPathLengthLimit(30.0f);
bool result = path.CalculatePath(x, y, z);
if (!result || path.GetPathType().HasAnyFlag(PathType.NoPath))
{
i_nextCheckTime.Reset(100);
return;
}
MoveSplineInit init = new MoveSplineInit(owner);
init.MovebyPath(path.GetPath());
init.SetWalk(false);
int traveltime = init.Launch();
i_nextCheckTime.Reset(traveltime + RandomHelper.URand(800, 1500));
}
public override bool DoUpdate(T owner, uint time_diff)
{
if (owner.HasUnitState(UnitState.Root | UnitState.Stunned | UnitState.Distracted))
{
return(true);
}
if (i_nextMoveTime.Passed())
{
// currently moving, update location
owner.AddUnitState(UnitState.ConfusedMove);
if (owner.MoveSpline.Finalized())
{
i_nextMoveTime.Reset(RandomHelper.IRand(800, 1500));
}
}
else
{
// waiting for next move
i_nextMoveTime.Update(time_diff);
if (i_nextMoveTime.Passed())
{
// start moving
owner.AddUnitState(UnitState.ConfusedMove);
float dest = (float)(4.0f * RandomHelper.NextDouble() - 2.0f);
Position pos = new Position(i_x, i_y, i_z);
owner.MovePositionToFirstCollision(ref pos, dest, 0.0f);
PathGenerator path = new PathGenerator(owner);
path.SetPathLengthLimit(30.0f);
bool result = path.CalculatePath(pos.GetPositionX(), pos.GetPositionY(), pos.GetPositionZ());
if (!result || path.GetPathType().HasAnyFlag(PathType.NoPath))
{
i_nextMoveTime.Reset(100);
return(true);
}
MoveSplineInit init = new MoveSplineInit(owner);
init.MovebyPath(path.GetPath());
init.SetWalk(true);
init.Launch();
}
}
return(true);
}
public void MoveTo(Vector3 dest, bool generatePath = true, bool forceDestination = false)
{
if (generatePath)
{
PathGenerator path = new PathGenerator(unit);
bool result = path.CalculatePath(dest.X, dest.Y, dest.Z, forceDestination);
if (result && !Convert.ToBoolean(path.GetPathType() & PathType.NoPath))
{
MovebyPath(path.GetPath());
return;
}
}
args.path_Idx_offset = 0;
args.path = new Vector3[2];
TransportPathTransform transform = new TransportPathTransform(unit, args.TransformForTransport);
args.path[1] = transform.Calc(dest);
}
public override bool Update(Unit owner, uint diff)
{
// owner might be dead or gone (can we even get nullptr here?)
if (!owner || !owner.IsAlive())
{
return(false);
}
// our target might have gone away
Unit target = _abstractFollower.GetTarget();
if (target == null || !target.IsInWorld)
{
return(false);
}
// the owner might be unable to move (rooted or casting), pause movement
if (owner.HasUnitState(UnitState.NotMove) || owner.IsMovementPreventedByCasting())
{
owner.StopMoving();
_lastTargetPosition = null;
Creature cOwner = owner.ToCreature();
if (cOwner != null)
{
cOwner.SetCannotReachTarget(false);
}
return(true);
}
bool mutualChase = IsMutualChase(owner, target);
float hitboxSum = owner.GetCombatReach() + target.GetCombatReach();
float minRange = _range.HasValue ? _range.Value.MinRange + hitboxSum : SharedConst.ContactDistance;
float minTarget = (_range.HasValue ? _range.Value.MinTolerance : 0.0f) + hitboxSum;
float maxRange = _range.HasValue ? _range.Value.MaxRange + hitboxSum : owner.GetMeleeRange(target); // melee range already includes hitboxes
float maxTarget = _range.HasValue ? _range.Value.MaxTolerance + hitboxSum : SharedConst.ContactDistance + hitboxSum;
ChaseAngle?angle = mutualChase ? null : _angle;
// if we're already moving, periodically check if we're already in the expected range...
if (owner.HasUnitState(UnitState.ChaseMove))
{
if (_rangeCheckTimer > diff)
{
_rangeCheckTimer -= diff;
}
else
{
_rangeCheckTimer = RANGE_CHECK_INTERVAL;
if (PositionOkay(owner, target, _movingTowards ? null : minTarget, _movingTowards ? maxTarget : null, angle))
{
_path = null;
owner.StopMoving();
owner.SetInFront(target);
DoMovementInform(owner, target);
return(true);
}
}
}
// if we're done moving, we want to clean up
if (owner.HasUnitState(UnitState.ChaseMove) && owner.MoveSpline.Finalized())
{
_path = null;
Creature cOwner = owner.ToCreature();
if (cOwner != null)
{
cOwner.SetCannotReachTarget(false);
}
owner.ClearUnitState(UnitState.ChaseMove);
owner.SetInFront(target);
DoMovementInform(owner, target);
}
// if the target moved, we have to consider whether to adjust
if (_lastTargetPosition == null || target.GetPosition() != _lastTargetPosition || mutualChase != _mutualChase)
{
_lastTargetPosition = new(target.GetPosition());
_mutualChase = mutualChase;
if (owner.HasUnitState(UnitState.ChaseMove) || !PositionOkay(owner, target, minRange, maxRange, angle))
{
Creature cOwner = owner.ToCreature();
// can we get to the target?
if (cOwner != null && !target.IsInAccessiblePlaceFor(cOwner))
{
cOwner.SetCannotReachTarget(true);
cOwner.StopMoving();
_path = null;
return(true);
}
// figure out which way we want to move
bool moveToward = !owner.IsInDist(target, maxRange);
// make a new path if we have to...
if (_path == null || moveToward != _movingTowards)
{
_path = new PathGenerator(owner);
}
float x, y, z;
bool shortenPath;
// if we want to move toward the target and there's no fixed angle...
if (moveToward && !angle.HasValue)
{
// ...we'll pathfind to the center, then shorten the path
target.GetPosition(out x, out y, out z);
shortenPath = true;
}
else
{
// otherwise, we fall back to nearpoint finding
target.GetNearPoint(owner, out x, out y, out z, (moveToward ? maxTarget : minTarget) - hitboxSum, angle.HasValue ? target.ToAbsoluteAngle(angle.Value.RelativeAngle) : target.GetAbsoluteAngle(owner));
shortenPath = false;
}
if (owner.IsHovering())
{
owner.UpdateAllowedPositionZ(x, y, ref z);
}
bool success = _path.CalculatePath(x, y, z, owner.CanFly());
if (!success || _path.GetPathType().HasAnyFlag(PathType.NoPath))
{
if (cOwner)
{
cOwner.SetCannotReachTarget(true);
}
owner.StopMoving();
return(true);
}
if (shortenPath)
{
_path.ShortenPathUntilDist(target, maxTarget);
}
if (cOwner)
{
cOwner.SetCannotReachTarget(false);
}
owner.AddUnitState(UnitState.ChaseMove);
bool walk = false;
if (cOwner && !cOwner.IsPet())
{
switch (cOwner.GetMovementTemplate().GetChase())
{
case CreatureChaseMovementType.CanWalk:
walk = owner.IsWalking();
break;
case CreatureChaseMovementType.AlwaysWalk:
walk = true;
break;
default:
break;
}
}
MoveSplineInit init = new(owner);
init.MovebyPath(_path.GetPath());
init.SetWalk(walk);
init.SetFacing(target);
init.Launch();
}
}
// and then, finally, we're done for the tick
return(true);
}
public override bool Update(Unit owner, uint diff)
{
// owner might be dead or gone
if (owner == null || !owner.IsAlive())
{
return(false);
}
// our target might have gone away
Unit target = _abstractFollower.GetTarget();
if (target == null || !target.IsInWorld)
{
return(false);
}
if (owner.HasUnitState(UnitState.NotMove) || owner.IsMovementPreventedByCasting())
{
_path = null;
owner.StopMoving();
_lastTargetPosition = null;
return(true);
}
_checkTimer.Update((int)diff);
if (_checkTimer.Passed())
{
_checkTimer.Reset(CHECK_INTERVAL);
if (HasFlag(MovementGeneratorFlags.InformEnabled) && PositionOkay(owner, target, _range, _angle))
{
RemoveFlag(MovementGeneratorFlags.InformEnabled);
_path = null;
owner.StopMoving();
_lastTargetPosition = new();
DoMovementInform(owner, target);
return(true);
}
}
if (owner.HasUnitState(UnitState.FollowMove) && owner.MoveSpline.Finalized())
{
RemoveFlag(MovementGeneratorFlags.InformEnabled);
_path = null;
owner.ClearUnitState(UnitState.FollowMove);
DoMovementInform(owner, target);
}
if (_lastTargetPosition == null || _lastTargetPosition.GetExactDistSq(target.GetPosition()) > 0.0f)
{
_lastTargetPosition = new(target.GetPosition());
if (owner.HasUnitState(UnitState.FollowMove) || !PositionOkay(owner, target, _range + FOLLOW_RANGE_TOLERANCE))
{
if (_path == null)
{
_path = new PathGenerator(owner);
}
float x, y, z;
// select angle
float tAngle;
float curAngle = target.GetRelativeAngle(owner);
if (_angle.IsAngleOkay(curAngle))
{
tAngle = curAngle;
}
else
{
float diffUpper = Position.NormalizeOrientation(curAngle - _angle.UpperBound());
float diffLower = Position.NormalizeOrientation(_angle.LowerBound() - curAngle);
if (diffUpper < diffLower)
{
tAngle = _angle.UpperBound();
}
else
{
tAngle = _angle.LowerBound();
}
}
target.GetNearPoint(owner, out x, out y, out z, _range, target.ToAbsoluteAngle(tAngle));
if (owner.IsHovering())
{
owner.UpdateAllowedPositionZ(x, y, ref z);
}
// pets are allowed to "cheat" on pathfinding when following their master
bool allowShortcut = false;
Pet oPet = owner.ToPet();
if (oPet != null)
{
if (target.GetGUID() == oPet.GetOwnerGUID())
{
allowShortcut = true;
}
}
bool success = _path.CalculatePath(x, y, z, allowShortcut);
if (!success || _path.GetPathType().HasFlag(PathType.NoPath))
{
owner.StopMoving();
return(true);
}
owner.AddUnitState(UnitState.FollowMove);
AddFlag(MovementGeneratorFlags.InformEnabled);
MoveSplineInit init = new(owner);
init.MovebyPath(_path.GetPath());
init.SetWalk(target.IsWalking());
init.SetFacing(target.GetOrientation());
init.Launch();
}
}
return(true);
}