cleanup World references

src/world/Level.cpp

@@ -71,12 +71,12 @@ Level::Level(
 
 Level::~Level() = default;
 
-World* Level::getWorld() {
-    return world.get();
+World& Level::getWorld() {
+    return *world;
 }
 
-const World* Level::getWorld() const {
-    return world.get();
+const World& Level::getWorld() const {
+    return *world;
 }
 
 void Level::onSave() {

src/world/Level.hpp

@@ -46,9 +46,9 @@ public:
     );
     ~Level();
 
-    World* getWorld();
+    World& getWorld();
 
-    const World* getWorld() const;
+    const World& getWorld() const;
 
     void onSave();
 

src/world/World.cpp

@@ -147,7 +147,7 @@ std::unique_ptr<Level> World::load(
 
         if (!playerRoot["players"].empty()) {
             if (!playerRoot["players"][0].has("id")) {
-                level->getWorld()->getInfo().nextPlayerId++;
+                level->getWorld().getInfo().nextPlayerId++;
             }
         }
     }

src/world/World.hpp

@@ -67,6 +67,8 @@ public:
         const std::vector<ContentPack>& packs
     );
 
+    World(const World&) = delete;
+
     ~World();
 
     /// @brief Update world day-time and total time