Add a constant holding the number of different ATC types

diff --git a/src/ATC/ATC.hxx b/src/ATC/ATC.hxx
index 071cd50384d0c597d21389aeb6746543e875a17a..1c96f86ade63c0320070b680732f8b039fcd5d49 100644 (file)
--- a/src/ATC/ATC.hxx
+++ b/src/ATC/ATC.hxx
@@ -65,7 +65,9 @@ enum atc_type {
        APPROACH,
        DEPARTURE,
        ENROUTE
-}; 
+};
+
+const int ATC_NUM_TYPES = 7;
 
 // DCL - new experimental ATC data store
 struct ATCData {