rework(snake): added tail get_new_point for managing tail movement

src/main.cpp

@@ -2,6 +2,7 @@
 #include <thread>
 #include <cstdlib>
 #include <unistd.h>
+#include <vector>
 #include "point.hpp"
 #include "fruit.hpp"
 #include "snake.hpp"
@@ -9,66 +10,66 @@
 #include "globals.hpp"
 #include "input.hpp"
 
-int main() {
+int main (int argc, char *argv[]) {	
     Snake snake {1};
     Window window;
     Input input;
     Fruit fruit;
 
     int x = 5;
-    int y = 5;
-    for(int i = 0; i <= x; i++) {
-	for(int a = 0; a <= y; a++) {
-	    snake.create_tail(i, a);
+    for(int i = 0; i < x; i++) {
+	snake.create_tail(i, 0);
+    }
+
+    int row = 0, col = 0;
+    int count = 0;
+    while(count < 2) {
+	count++;
+	for(int i = 0; i < snake.m_tails.size(); i++) {
+	    std::tie(row, col) = snake.get_new_point(i, 1, row, col);
+	    std::cout << snake.m_tails.at(i).to_string() << std::endl;
 	}
     }
 
-    for(int i = 0; i < snake.m_tails.size(); i++) {
-	std::cout << &snake.m_tails.at(i) << std::endl;
-    }
-    std::cout << snake.m_tails.size() << std::endl;
-
-
-	//    int score = 0;
-	//    int row = 0, col = 0;
-	//    int fps = 5;
-	//    bool running = true;
-	//
-	//    Point previous {row,col}; // Creating initial snake head position
-	//    fruit.create_point(); // Creating initial fruit object
-	//    std::array<std::array<char, COL>, ROW> &board = window.m_board;
-	//    std::thread input_thread(&Input::get_input, &input);
-	//    while(running) {
-	// switch (input.m_current_key) {
-	//     case 's':
-	// 	snake.m_direction = 1;
-	// 	break;
-	//     case 'w':
-	// 	snake.m_direction = 2;
-	// 	break;
-	//     case 'a':
-	// 	snake.m_direction = 3;
-	// 	break;
-	//     case 'd':
-	// 	snake.m_direction = 4;
-	// 	break;
-	//     case 'q':
-	// 	running = false;
-	// 	break;
-	// }
-	//
-	// fruit.reset(board, row, col, score);
-	// std::tie(row, col) = previous.get_point(snake.m_direction, row, col);
-	//
-	// board[row][col] = '*';
-	// board[fruit.m_row][fruit.m_col] = '*';
-	// std::cout << "Score: " << score << std::endl;
-	// previous.clear(board); // Clear old previous point
-	// previous = Point {row, col}; // Set new previous point
-	// window.update_loop(fps); // Update loop to clear board, tick and redisplay board
-	//    }
-	//
-	//    input_thread.join();
+    //    int score = 0;
+    //    int fps = 5;
+    //    bool running = true;
+    //
+    //    Point previous {row,col}; // Creating initial snake head position
+    //    fruit.create_point(); // Creating initial fruit object
+    //    std::array<std::array<char, COL>, ROW> &board = window.m_board;
+    //    std::thread input_thread(&Input::get_input, &input);
+    //    while(running) {
+    // switch (input.m_current_key) {
+    //     case 's':
+    // 	snake.m_direction = 1;
+    // 	break;
+    //     case 'w':
+    // 	snake.m_direction = 2;
+    // 	break;
+    //     case 'a':
+    // 	snake.m_direction = 3;
+    // 	break;
+    //     case 'd':
+    // 	snake.m_direction = 4;
+    // 	break;
+    //     case 'q':
+    // 	running = false;
+    // 	break;
+    // }
+    //
+    // fruit.reset(board, row, col, score);
+    // std::tie(row, col) = previous.get_point(snake.m_direction, row, col);
+    //
+    // board[row][col] = '*';
+    // board[fruit.m_row][fruit.m_col] = '*';
+    // std::cout << "Score: " << score << std::endl;
+    // previous.clear(board); // Clear old previous point
+    // previous = Point {row, col}; // Set new previous point
+    // window.update_loop(fps); // Update loop to clear board, tick and redisplay board
+    //    }
+    //
+    //    input_thread.join();
 
     return 0;
 }

src/point.cpp

@@ -9,10 +9,10 @@ void Point::clear(std::array<std::array<char, COL>, ROW> &arr) const {
     arr[m_row][m_col] = '.';
 }
 
-std::pair<int, int> Point::get_point(int direction, int row, int col) {
+std::pair<int, int> Point::get_new_point(int direction, int row, int col) {
     switch (direction) {
 	case 1:
-	    row ++;
+	    row++;
 	    if (row >= ROW) row = 0;
 	    break;
 	case 2:

src/snake.cpp

@@ -9,6 +9,24 @@ void Snake::create_tail(int row, int col) {
     m_tails.push_back(Point {row, col});
 }
 
+std::pair<int, int> Snake::get_new_point(int tail_index, int direction, int row, int col) {
+    m_tails.at(tail_index) = Point {row, col};
+    if (direction == 1) {
+	if (row >= ROW - 1) row = 1;
+	else row++;
+    } else if (direction == 2) {
+	if (row <= 0) row = ROW - 1;
+	else row--;
+    } else if (direction == 3) {
+	if (col <= 0) col = COL - 1;
+	else col--;
+    } else if (direction == 4) {
+	if (col >= COL - 1) col = 1;
+	else col++;
+    }
+    return { row, col };
+}
+
 /* snake head for instance is (3, 0)
  * the direct body to the head when going down would be (snake_head_x, snake_head_y - 1)
  * the next and so on would be (previous_body_segment_x - 1, previous_body_segment_y - 1)