snake_c

#ifndef SNAKE_H

#define SNAKE_H

#define _POSIX_C_SOURCE 199309L

#include <termios.h>

#include <unistd.h>

#include <stdbool.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <sys/ioctl.h>

#include <time.h>

#include <ctype.h>

#include <string.h>

#define RIGHT_CODE 'C'

#define LEFT_CODE 'D'

#define UP_CODE 'A'

#define DOWN_CODE 'B'

#define WIDTH 20

#define HEIGHT 20

#define MIN_SIZE 10

#define MAX_SIZE 100

#define STRING_LEN 20

#define PATH_LEN 200

#define SPEED 50 /* in ms */

#define MAX_LENGTH 1000

#define STARTING_LENGTH 2

#define SETTING_FILE "snake_c.settings"

typedef enum { NEW_GAME, SETTINGS, EXIT, MAIN_MENU } main_menu;

typedef enum {HEIGHT_S, WIDTH_S, SPEED_S, BACK_S, SETTINGS_MENU} settings;

typedef enum {V_FAST, FAST, AVERAGE, SLOW, V_SLOW, SPEED_L} speed;

typedef enum {

  UP, LEFT, DOWN, RIGHT, DIRECTIONS,

  ENTER, P_KEY, Q_KEY, ESCAPE

} direction;

typedef enum {

  AIR, FRUIT, HEAD_1, HEAD_2, HORIZONTAL, VERTICAL, 

  TOP_RIGHT, TOP_LEFT, BOTTOM_RIGHT, BOTTOM_LEFT

} board_state;

typedef struct selected {

  int8_t x;

  int8_t y;

} selected;

typedef struct snake_part {

  selected coords;

  direction directions[2];

} snake_part;

typedef struct snake {

  snake_part * position;

  uint16_t length;

} snake;

uint8_t update_snake (selected game_size, snake *my_snake, direction shift);

void update_field(snake my_snake, selected game_size, 

  board_state **board, bool init);

selected new_fruit(selected game_size, board_state **board);

bool start_animation();

bool draw_menu(main_menu menu, struct winsize window_size);

void draw_settings(settings selected_setting, speed game_speed, selected game_size);

bool draw_board(selected game_size, board_state **board,

  struct winsize window_size, bool redraw, bool pause, uint16_t score);

void draw_pause(struct winsize window_size, 

  uint8_t field_width,uint8_t field_height);

char *give_state(board_state square);

direction read_direction(char *string, bool wasd_enabled);

#endif