Update l4d2_tankrage.sp

current check sometimes returns a null nav area
example: c1m1_hotel, teleport to the position "300 5683 2893"
the current flow displayed by the plugin outputs "14%" because the "flow" variable is 0, because no nav (pNavArea) was found
using "L4D_GetLastKnownArea" is more accurate since it outputs the same value as the "current_flow_distance" game command

Author: Mart-User

addons/sourcemod/scripting/l4d2_tankrage.sp

@@ -176,8 +176,7 @@ float GetMaxSurvivorCompletion()
     Address pNavArea;
     for (int i = 1; i <= MaxClients; i++) {
         if (IsClientInGame(i) && GetClientTeam(i) == 2 && IsPlayerAlive(i)) {
-            GetClientAbsOrigin(i, origin);
-            pNavArea = L4D2Direct_GetTerrorNavArea(origin);
+            pNavArea = L4D_GetLastKnownArea(i);
             if (pNavArea != Address_Null) {
                 tmp_flow = L4D2Direct_GetTerrorNavAreaFlow(pNavArea);
                 flow = (flow > tmp_flow) ? flow : tmp_flow;
@@ -226,4 +225,4 @@ stock void LoadTranslation(const char[] translation)
 		SetFailState("Missing translation file %s.txt", translation);
 
 	LoadTranslations(translation);
-}
+}