Add ability to wait for a distance along a spline in auto

Change-Id: I0e992ccffeca59a655b8b890942aa7aaadfb9fd7
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/frc971/autonomous/base_autonomous_actor.h b/frc971/autonomous/base_autonomous_actor.h
index 5562dde..403854f 100644
--- a/frc971/autonomous/base_autonomous_actor.h
+++ b/frc971/autonomous/base_autonomous_actor.h
@@ -41,7 +41,9 @@
     // Whether there is less than a certain distance, in meters, remaining in
     // the current spline.
     bool SplineDistanceRemaining(double distance);
+    bool SplineDistanceTraveled(double distance);
     bool WaitForSplineDistanceRemaining(double distance);
+    bool WaitForSplineDistanceTraveled(double distance);
 
     // Returns [x, y, theta] position of the start.
     const Eigen::Vector3d &starting_position() const { return spline_start_; }