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

include/element.hpp

@@ -0,0 +1,36 @@
+#ifndef ELEMENT_HPP
+#define ELEMENT_HPP
+
+#include <vector>
+#include "point.hpp"
+
+struct Head {
+	Head();
+	Point m_head;
+	Point m_previous_head;
+	void get_new_pos();
+};
+
+struct Tail {
+	Point m_tail_pos;
+	Point m_previous_tail_pos;
+};
+
+struct Body {
+	Body();
+	std::vector<Tail> m_body;
+	int m_score;
+	bool m_collision;
+	void clear(std::array<std::array<char, COL>, ROW> &arr);
+	void add_tail();
+	void get_new_points(Head &head);
+	void collision(Head &head);
+};
+
+struct Fruit {
+	Fruit();
+	Point m_point;
+	void get_new_pos(std::array<std::array<char, COL>, ROW> &board, Head &head, int &score);
+};
+
+#endif // ELEMENT_HPP