public override Activity Tick(Actor self)
{
if (IsCanceled || !target.IsValidFor(self))
{
return(NextActivity);
}
if (AdjustAltitude(self, helicopter, helicopter.Info.CruiseAltitude))
{
return(this);
}
var pos = target.CenterPosition;
// Rotate towards the target
var dist = pos - self.CenterPosition;
var desiredFacing = Util.GetFacing(dist, helicopter.Facing);
helicopter.Facing = Util.TickFacing(helicopter.Facing, desiredFacing, helicopter.ROT);
var move = helicopter.FlyStep(desiredFacing);
// Inside the minimum range, so reverse
if (minRange.Range > 0 && target.IsInRange(helicopter.CenterPosition, minRange))
{
helicopter.SetPosition(self, helicopter.CenterPosition - move);
return(this);
}
// Inside the maximum range, so we're done
if (maxRange.Range > 0 && target.IsInRange(helicopter.CenterPosition, maxRange))
{
return(NextActivity);
}
// The next move would overshoot, so just set the final position
if (dist.HorizontalLengthSquared < move.HorizontalLengthSquared)
{
helicopter.SetPosition(self, pos + new WVec(0, 0, helicopter.Info.CruiseAltitude.Range - pos.Z));
return(NextActivity);
}
helicopter.SetPosition(self, helicopter.CenterPosition + move);
return(this);
}
public static bool AdjustAltitude(Actor self, Helicopter helicopter, WRange targetAltitude)
{
var altitude = helicopter.CenterPosition.Z;
if (altitude == targetAltitude.Range)
{
return(false);
}
var delta = helicopter.Info.AltitudeVelocity.Range;
var dz = (targetAltitude.Range - altitude).Clamp(-delta, delta);
helicopter.SetPosition(self, helicopter.CenterPosition + new WVec(0, 0, dz));
return(true);
}
