Major refactoring - internal server state machine implemented

src/LocationState.h

@@ -2,10 +2,18 @@
 #include "external/nlohmann/json.hpp"
 #include "ISaveable.h"
 #include "NpcCar.h"
+#include "navigation/PathFinder.h"
+#include <string>
 
 namespace FRG {
 
 struct LocationState : public ISaveable {
+    //This value is populated from the JSON configs and should not be changed during the regular gameplay.
+    //It might be changed only in the editor mode during development.
+    std::vector<PathFinder> navigationMaps;
+    std::vector<Eigen::Vector3f> planPathExceptMyself(const Eigen::Vector3f& start, const Eigen::Vector3f& end, const std::string& entityId) const;
+    void initNavigation(const std::vector<std::string>& paths);
+
     // ---- Camera ----
     float cameraAzimuth     = -2.35f;
     float cameraInclination =  1.1036f;
@@ -13,11 +21,10 @@ struct LocationState : public ISaveable {
     // ---- Navigation ----
     int activeNavigationIndex = 0;
 
-    // ---- Walk-to targets (-1 = none) ----
-    // Mirrors CharacterState's kNoTarget convention; raw pointers are not serialisable.
-    int targetInteractiveObjectIndex = -1;
-    int targetInteractNpcIndex       = -1;
-    int targetTeleportZoneIndex      = -1;
+    // ---- Walk-to targets (empty = none) ----
+    std::string targetInteractiveObjectId;
+    std::string targetInteractNpcId;
+    std::string targetTeleportZoneId;
 
     // ---- World-mode flags (synced from Game after each transition) ----
     bool isDarklands = false;