refactor(Core/Instances): Implement GetTeamIdInInstance() for two-fac… (#21168)

src/server/game/Instances/InstanceScript.h

@@ -141,7 +141,7 @@ typedef std::map<ObjectGuid::LowType /*spawnId*/, uint8 /*state*/> ObjectStateMa
 class InstanceScript : public ZoneScript
 {
 public:
-    explicit InstanceScript(Map* map) : instance(map), completedEncounters(0) {}
+    explicit InstanceScript(Map* map) : instance(map), completedEncounters(0), _teamIdInInstance(TEAM_NEUTRAL) {}
 
     ~InstanceScript() override {}
 
@@ -182,10 +182,10 @@ public:
     GameObject* GetGameObject(uint32 type);
 
     //Called when a player successfully enters the instance.
-    virtual void OnPlayerEnter(Player* /*player*/) {}
+    virtual void OnPlayerEnter(Player* /*player*/);
 
     //Called when a player successfully leaves the instance.
-    virtual void OnPlayerLeave(Player* /*player*/) {}
+    virtual void OnPlayerLeave(Player* /*player*/);
 
     virtual void OnPlayerAreaUpdate(Player* /*player*/, uint32 /*oldArea*/, uint32 /*newArea*/) {}
 
@@ -322,6 +322,9 @@ protected:
     void WritePersistentData(std::ostringstream& data);
     virtual void WriteSaveDataMore(std::ostringstream& /*data*/) { }
 
+    TeamId GetTeamIdInInstance() const { return _teamIdInInstance; }
+    bool IsTwoFactionInstance() const;
+
 private:
     static void LoadObjectData(ObjectData const* creatureData, ObjectInfoMap& objectInfo);
 
@@ -336,6 +339,7 @@ private:
     ObjectGuidMap _objectGuids;
     ObjectStateMap _objectStateMap;
     uint32 completedEncounters; // completed encounter mask, bit indexes are DungeonEncounter.dbc boss numbers, used for packets
+    TeamId _teamIdInInstance;
     std::unordered_set<uint32> _activatedAreaTriggers;
 };