// Use a bigger number to be more responsive, or a smaller number
-// to be more sluggish (the base time is 1.0).
-#define RESPONSIVENESS 0.25
+// to be more sluggish.
+#define RESPONSIVENESS 0.5
-TurnIndicator::TurnIndicator ()
+TurnIndicator::TurnIndicator () :
+ _last_rate(0)
{
}