allow to inspect balancing arena

src/balancing/ArenaSimulation.h

@@ -51,7 +51,18 @@ public:
     void run();
     void requestStop();
 
+    void tickOnce();
+    std::vector<FireEvent> drainFireEvents();
+
     ArenaStatus status() const;
+    bool isFinished() const;
+    int winnerTeam() const;
+    Tick currentTick() const;
+
+    const ArenaConfig& arenaConfig() const;
+    const BuildingSystem& buildings() const;
+    const ShipSystem& ships() const;
+    const ScrapSystem& scraps() const;
 
 private:
     EntityId allocateId();
@@ -81,6 +92,8 @@ private:
     int m_winnerTeam;
     std::atomic<bool> m_stopRequested;
 
+    std::vector<FireEvent> m_fireEvents;
+
     mutable std::mutex m_statusMutex;
     ArenaStatus m_status;
 };