Optimize parameter passing to avoid unnecessary copying

src/items/Inventories.cpp

@@ -31,7 +31,7 @@ std::shared_ptr<Inventory> Inventories::createVirtual(size_t size) {
     });
 }
 
-void Inventories::store(std::shared_ptr<Inventory> inv) {
+void Inventories::store(const std::shared_ptr<Inventory>& inv) {
     map[inv->getId()] = inv;
 }
 

src/items/Inventories.hpp

@@ -28,7 +28,7 @@ public:
     std::shared_ptr<Inventory> createVirtual(size_t size);
 
     /* Store inventory */
-    void store(std::shared_ptr<Inventory> inv);
+    void store(const std::shared_ptr<Inventory>& inv);
 
     /* Remove inventory from map */
     void remove(int64_t id);

src/items/ItemDef.cpp

@@ -1,6 +1,6 @@
 #include "ItemDef.hpp"
 #include "../util/stringutil.hpp"
 
-ItemDef::ItemDef(std::string name) : name(name) {
+ItemDef::ItemDef(const std::string& name) : name(name) {
     caption = util::id_to_caption(name);
 }

src/items/ItemDef.hpp

@@ -44,7 +44,7 @@ public:
         bool emissive = false;
     } rt;
 
-    ItemDef(std::string name);
+    ItemDef(const std::string& name);
     ItemDef(const ItemDef&) = delete;
 };