#include #include #include #include "snake.h" struct snake *add_snake(struct snake *snake, int x, int y) { struct snake *new_head = (struct snake *)malloc(sizeof(struct snake)); if (!new_head) { return NULL; } new_head->x = x; new_head->y = y; new_head->next = snake; return new_head; } struct snake *remove_snake(struct snake *snake) { if (!snake) { return NULL; } if (!snake->next) { free(snake); return NULL; } struct snake *current = snake; while (current->next && current->next->next) { current = current->next; } free(current->next); current->next = NULL; return snake; } int is_snake(struct snake *snake, int x, int y) { struct snake *current = snake; while (current) { if (current->x == x && current->y == y) { return 1; } current = current->next; } return 0; }