feat(shield): added shields

include/GameManager.h

@@ -4,6 +4,7 @@
 #include <SFML/Graphics.hpp>
 #include "Player.h"
 #include "Laser.h"
+#include "Shield.h"
 
 using namespace std;
 using namespace sf;
@@ -15,14 +16,17 @@ public:
 
 	void run();
 	void handleInputs();
+	void handleLasersCollision();
 
 private:
 	Clock _clock;
 
-	RenderWindow _window{ VideoMode::getFullscreenModes()[0], "Space Invader", Style::Fullscreen };
+	//RenderWindow _window{ VideoMode::getFullscreenModes()[0], "Space Invader", Style::Fullscreen };
+	RenderWindow _window{ VideoMode(1024, 800), "Space Invader", Style::Close | Style::Titlebar};
 
 	Player _player = { _window.getSize() };
 
-	vector<Laser *> _lasers;
+	vector<Laser*> _lasers;
+	vector<Shield*> _shields;
 };