Added copy operators for game's static instance

Player
CommandParser can be swapped but not copied.

Engine/src/player.cpp

@@ -1,9 +1,32 @@
 #include "player.h"
+#include <algorithm>
+#include <string>
+
+Player::Player()
+{
+    Init();
+}
+
+Player::Player(Player &rhs)
+{
+    id = rhs.id;
+    level = rhs.level;
+    stats = rhs.stats;
+    name = rhs.name;
+    description = rhs.description;
+    curRoomID = rhs.curRoomID;
+    prevRoomID = rhs.prevRoomID;
+}
+
+Player& Player::operator=(Player& rhs)
+{
+    swap(*this, rhs);
+    return *this;
+}
 
 void Player::Init() {
     // initialize stats, room location, inventory and item data
     stats = Stats{100.0f, 50.00f, 150.00f, 50.00f};
-
     name = "Player";
 }
 
@@ -29,3 +52,14 @@ void Player::ChangeRoom(int roomID) {
         curRoomID = roomID;
     }
 }
+
+Player::~Player()
+{    
+    id = -1;
+    level = -1;
+    stats = {};
+    name.erase();
+    description.erase();
+    curRoomID = -1;
+    prevRoomID = -1;
+}