Avoid redundant per-frame calls to getDbProp in outpost.xml and outpost.lua

--HG--
branch : kaetemi-optimize

code/ryzom/client/data/gamedev/interfaces_v3/outpost.lua

@@ -62,17 +62,10 @@ end
 
 ------------------------------------------------------------------------------------------------------------
 function game:outpostUpdateTimeZone()
-	-- update time zone auto?
-	local	tzAuto= getDbProp('UI:SAVE:OUTPOST:TIME_ZONE_AUTO');
-	if(tzAuto==0) then
-		return;
-	end
-	-- every 5 seconds?
-	local curTick= getDbProp('UI:VARIABLES:CURRENT_SERVER_TICK');
-	if(curTick - game.Outpost.LastTimeZoneUpdate > 50) then
-		game.Outpost.LastTimeZoneUpdate= curTick;
-		runAH(nil,'outpost_update_time_zone_auto','');
-	end
+	local curTick = getDbProp('UI:VARIABLES:CURRENT_SERVER_TICK');
+	setDbProp('UI:TEMP:OUTPOST:TIME_ZONE_NEXT_UPDATE', curTick + 50);
+	game.Outpost.LastTimeZoneUpdate = curTick;
+	runAH(nil,'outpost_update_time_zone_auto','');
 end
 
 ------------------------------------------------------------------------------------------------------------

code/ryzom/client/data/gamedev/interfaces_v3/outpost.xml

@@ -21,8 +21,9 @@
 <!-- Save the Time Zone config -->
 <variable entry="UI:SAVE:OUTPOST:TIME_ZONE"		 type="sint32" value="0" />
 <variable entry="UI:SAVE:OUTPOST:TIME_ZONE_AUTO" type="sint32" value="1" />
+<variable entry="UI:TEMP:OUTPOST:TIME_ZONE_NEXT_UPDATE" type="sint32" value="0" />
 <!-- just a script called at init and every 5 seconds, to setup TIME_ZONE, if time_zone is auto-->
-<link expr="depends(@UI:SAVE:OUTPOST:TIME_ZONE_AUTO, @UI:VARIABLES:CURRENT_SERVER_TICK)" action="lua:game:outpostUpdateTimeZone()" />
+<link expr="depends(@UI:SAVE:OUTPOST:TIME_ZONE_AUTO, @UI:VARIABLES:CURRENT_SERVER_TICK)" cond="and(eq(@UI:SAVE:OUTPOST:TIME_ZONE_AUTO, 1), ge(@UI:VARIABLES:CURRENT_SERVER_TICK, @UI:TEMP:OUTPOST:TIME_ZONE_NEXT_UPDATE))" action="lua:game:outpostUpdateTimeZone()" />
 
 
 <!-- Temp Variables -->