snake_backend.h

/*
 * snake_backend.h
 *
 *  Created on: Jun 1, 2022
 *      Author: Piotr
 */

#ifndef SNAKE_BACKEND_H_
#define SNAKE_BACKEND_H_

#define SNAKE_START_LENGTH		4

#include <stdbool.h>

extern int points;

enum Direction {
	UP, DOWN, LEFT, RIGHT
};
enum Status {
	SUCC, FAILURE
};
struct PointList {
	int x;
	int y;
	struct PointList* next;
};

typedef struct PointList PointList;

typedef struct {
	PointList* snake;
	PointList* foods;
	int xmax;
	int ymax;
} Board;

bool is_same_place(PointList* cell1, PointList* cell2);
enum Status move_snake(Board* board, enum Direction dir);
PointList* next_move(Board* board, enum Direction dir);
PointList* create_cell(int x, int y);
PointList* create_random_cell(int xmax, int ymax);
PointList* create_snake();
Board* create_board(PointList* foods, PointList* snake, int xmax, int ymax);
bool list_contains(PointList* cell, PointList* list);
bool remove_from_list(PointList* elt, PointList** list);
void add_new_food(Board* board);

#endif /* SNAKE_BACKEND_H_ */