public int Launch()
{
MoveSpline move_spline = unit.moveSpline;
bool transport = !unit.GetTransGUID().IsEmpty();
Vector4 real_position = new Vector4();
// there is a big chance that current position is unknown if current state is not finalized, need compute it
// this also allows calculate spline position and update map position in much greater intervals
// Don't compute for transport movement if the unit is in a motion between two transports
if (!move_spline.Finalized() && move_spline.onTransport == transport)
{
real_position = move_spline.ComputePosition();
}
else
{
Position pos;
if (!transport)
{
pos = unit;
}
else
{
pos = unit.m_movementInfo.transport.pos;
}
real_position.X = pos.GetPositionX();
real_position.Y = pos.GetPositionY();
real_position.Z = pos.GetPositionZ();
real_position.W = unit.GetOrientation();
}
// should i do the things that user should do? - no.
if (args.path.Length == 0)
{
return(0);
}
// correct first vertex
args.path[0] = new Vector3(real_position.X, real_position.Y, real_position.Z);
args.initialOrientation = real_position.W;
move_spline.onTransport = !unit.GetTransGUID().IsEmpty();
MovementFlag moveFlags = unit.m_movementInfo.GetMovementFlags();
if (!args.flags.hasFlag(SplineFlag.Backward))
{
moveFlags = (moveFlags & ~MovementFlag.Backward) | MovementFlag.Forward;
}
else
{
moveFlags = (moveFlags & ~MovementFlag.Forward) | MovementFlag.Backward;
}
if (Convert.ToBoolean(moveFlags & MovementFlag.Root))
{
moveFlags &= ~MovementFlag.MaskMoving;
}
if (!args.HasVelocity)
{
// If spline is initialized with SetWalk method it only means we need to select
// walk move speed for it but not add walk flag to unit
var moveFlagsForSpeed = moveFlags;
if (args.walk)
{
moveFlagsForSpeed |= MovementFlag.Walking;
}
else
{
moveFlagsForSpeed &= ~MovementFlag.Walking;
}
args.velocity = unit.GetSpeed(SelectSpeedType(moveFlagsForSpeed));
}
if (!args.Validate(unit))
{
return(0);
}
unit.m_movementInfo.SetMovementFlags(moveFlags);
move_spline.Initialize(args);
MonsterMove packet = new MonsterMove();
packet.MoverGUID = unit.GetGUID();
packet.Pos = new Vector3(real_position.X, real_position.Y, real_position.Z);
packet.InitializeSplineData(move_spline);
if (transport)
{
packet.SplineData.Move.TransportGUID = unit.GetTransGUID();
packet.SplineData.Move.VehicleSeat = unit.GetTransSeat();
}
unit.SendMessageToSet(packet, true);
return(move_spline.Duration());
}
