refactor: renamed snake to element and moved fruit to element. Removed a lot of unused functions and variables

include/window.hpp

@@ -2,22 +2,12 @@
 #define WINDOW_HPP
 #include <array>
 #include "globals.hpp"
-#include "fruit.hpp"
-#include "snake.hpp"
+#include "element.hpp"
 
 struct Window {
 	Window();
 	std::array<std::array<char, COL>, ROW> m_board;
-	int m_score;
-	int m_reset;
-	int m_previous_reset;
-
-	void draw_window();
-	void tick(double frames_per_second);
-	void kill(bool &running);
-	void update_score(Fruit &fruit, Body &body);
-	void update_display(int fps);
-	void check_exit(bool &running, Body &body, bool &collision);
+	void update_display(Fruit &fruit, Head &head, Body &body);
 };
 
 #endif // WINDOW_HPP