starting an upgrade to move everything to just use ptrs and simplify the code a little

src/window.cpp

@@ -3,24 +3,22 @@
 #include <chrono>
 #include <thread>
 
-void Window::update_display(Fruit &fruit, Head &head, Body &body) {
-	for(int i = 0; i < ROW; i++) {
-		for(int j = 0; j < ROW; j++) {
-			m_board[i][j] = '.';
-		}
-	}
-	m_board[head.m_head.m_row][head.m_head.m_col] = '*';
-	m_board[fruit.m_point.m_row][fruit.m_point.m_col] = 'o';
-	for(int i = 0; i < body.m_body.size(); i++) {
-		m_board[body.m_body.at(i).m_tail_pos.m_row][body.m_body.at(i).m_tail_pos.m_col] = '@';
-	}
-
+void Window::draw_display() {
 	std::cout << "\033[H" << std::flush; // Clear screen
 	for(int i = 0; i < ROW; i++) {
 		for(int j = 0; j < ROW; j++) {
-			std::cout << m_board[i][j] << " ";
+			if(m_board[i][j] == nullptr) { std::cout << ". "; }
+			if(m_board[i][j] != nullptr) { std::cout << m_board[i][j]->m_symbol << " "; }
 		}
 		std::cout << "\r\n";
 	}
 	std::this_thread::sleep_for(std::chrono::milliseconds((int) (200))); // 1000 / fps; 200ms = 5fps
 }
+
+void Window::update_display(Point* segments[]) {
+	for(int i = 0; i < ROW * COL; i++) {
+		if(segments[i] != nullptr) {
+			m_board[segments[i]->m_row][segments[i]->m_col] = segments[i];
+		}
+	}
+}