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

.gitignore

@@ -1 +1,2 @@
 build/
+.cache/

include/globals.hpp

@@ -1,7 +1,9 @@
 #ifndef GLOBALS_HPP
 #define GLOBALS_HPP
 
-constexpr unsigned int ROW = 10;
-constexpr unsigned int COL = 10;
+#include <cstdint>
+
+constexpr uint16_t ROW = 10;
+constexpr uint16_t COL = 10;
 
 #endif // GLOBALS_HPP

include/point.hpp

@@ -12,7 +12,7 @@ struct Point {
 
     std::string to_string() const;
     void clear(std::array<std::array<char, COL>, ROW> &arr) const;
-    std::pair<int, int> get_point(int direction, int row, int col);
+    std::pair<int, int> get_new_point(int direction, int row, int col);
 };
 
 #endif // POINT_HPP

include/snake.hpp

@@ -7,6 +7,7 @@
 struct Snake {
     Snake(int default_direction);
     void create_tail(int row, int col);
+    std::pair<int, int> get_new_point(int tail_index, int direction, int row, int col);
     void update_tails_count();
 
     std::vector<Point> m_tails;

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"
@@ -9,28 +10,28 @@
 #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::cout << &snake.m_tails.at(i) << std::endl;
+	    std::tie(row, col) = snake.get_new_point(i, 1, row, col);
+	    std::cout << snake.m_tails.at(i).to_string() << std::endl;
+	}
     }
-    std::cout << snake.m_tails.size() << std::endl;
-
 
     //    int score = 0;
-	//    int row = 0, col = 0;
     //    int fps = 5;
     //    bool running = true;
     //

src/point.cpp

@@ -9,7 +9,7 @@ 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++;

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)