Add getWallTime to get wall time since scenario start

src/gameGlobalInfo.cpp

@@ -281,6 +281,7 @@ void GameGlobalInfo::reset()
     script_environment_base = nullptr;
 
     elapsed_time = 0.0f;
+    wall_time.restart();
     callsign_counter = 0;
     global_message = "";
     global_message_timeout = 0.0f;

src/gameGlobalInfo.h

@@ -6,6 +6,7 @@
 #include "components/radar.h"
 #include "Updatable.h"
 #include "multiplayer.h"
+#include "timer.h"
 #include <list>
 #include <functional>
 #include <optional>
@@ -58,6 +59,7 @@ class GameGlobalInfo : public MultiplayerObject, public Updatable
     string default_skybox = "default";
     string gm_control_code;
     float elapsed_time;
+    sp::SystemStopwatch wall_time;
     string scenario;
     std::unordered_map<string, string> scenario_settings;
 

src/script.cpp

@@ -408,6 +408,11 @@ static float luaGetScenarioTime()
     return gameGlobalInfo->elapsed_time;
 }
 
+static float luaGetWallTime()
+{
+    return gameGlobalInfo->wall_time.get();
+}
+
 static int luaGetAllObjects(lua_State* L)
 {
     lua_newtable(L);
@@ -1350,6 +1355,11 @@ bool setupScriptEnvironment(sp::script::Environment& env)
     /// This timer stops when the game is paused.
     /// Example: getScenarioTime() -- after two minutes, returns 120.0
     env.setGlobal("getScenarioTime", &luaGetScenarioTime);
+    /// float getWallTime()
+    /// Returns the elapsed wall time since scenario start, in seconds.
+    /// This timer does *not* stop when the game is paused.
+    /// Example: getWallTime() -- after one minute of the game being paused and two minutes of the game running, returns 180.0
+    env.setGlobal("getWallTime", &luaGetWallTime);
 
     /// std::vector<sp::ecs::Entity> getAllObjects()
     /// Returns a list of all objects that have a position in the world.