Make Elevator idleness depend on number of stops

This makes the Elevator's is_idle() method depend not only on its current
state, but on the likelihood that it will be non-idle very soon. If the
Elevator has no stops, and its direction is IDLE, then we can really
consider it idle.

Signed-off-by: Ira W. Snyder <devel@irasnyder.com>

diff --git a/elevator.cpp b/elevator.cpp
index 62dfb19..f2be628 100644 (file)
--- a/elevator.cpp
+++ b/elevator.cpp
@@ -517,6 +517,9 @@ void Elevator::move ()
 
 bool Elevator::is_idle () const
 {
+       if (stops_.size() != 0)
+               return false;
+
        return direction_ == IDLE;
 }