Detection fix issue #1173

fix for #1173

Moose Development/Moose/Core/Set.lua

@@ -1571,9 +1571,8 @@ do -- SET_GROUP
     return Count
   end
   
-  --- Iterate the SET_GROUP and count how many GROUPS are alive.
+  --- Iterate the SET_GROUP and count how many GROUPs and UNITs are alive.
   -- @param #SET_GROUP self
-  -- @param Core.Zone#ZONE ZoneObject The Zone to be tested for.
   -- @return #number The number of GROUPs completely in the Zone
   -- @return #number The number of UNITS alive.
   function SET_GROUP:CountAlive()

Moose Development/Moose/Functional/Detection.lua

@@ -541,7 +541,8 @@ do -- DETECTION_BASE
       
       end
       
-      self.DetectionCount = self.DetectionSet:Count()
+      -- Count alive(!) groups only. Solves issue #1173 https://github.com/FlightControl-Master/MOOSE/issues/1173
+      self.DetectionCount = self.DetectionSet:CountAlive()
       
       self.DetectionSet:ForEachGroupAlive(
         function( DetectionGroup )