snake_c

public

Small snake game in C

Star0

Watch0

59 commits 2 branches 1 tag 0 releases565.5 KiB

#include "snake.h"


int main(int argc, char *args[]) {

  /* command argument handling */

  printf("\033[?1049h");

  if (argc > 1) {
    if (argc > 2) {
      printf("Too many parameters\n");
      goto help_info;
    }

    if (!strcmp(args[1], "-h") || !strcmp(args[1], "--help")) {

      printf("This is a small TUI snake game.\n\n");
      printf("Controls: Arrow keys/WASD to control the snake.\n");
      printf("          P/Enter to pause.\n");
      printf("          Q to quit.\n");

      printf("\033[?1049l");
      return 0;
    }

    printf("Argument \"%s\" not recognized\n", args[1]);

  help_info:
    printf("Try \"-h\" or \"--help\" for more information\n");
    return 1;
  }

  
  /* game settings */

  speed game_speed = AVERAGE;
  selected game_size = {WIDTH, HEIGHT};

  score leader_board[SCORE_NUMBER] = {};

  /* Handling Files to store settings & highscores */

  char *env;
  char *folder_path;

  if ((env = getenv("XDG_DATA_HOME")) == NULL) {
    if ((env = getenv("HOME")) == NULL) {
      printf("are you ok?\n");
      return 1;
    }
    
    uint8_t error = 0;

    char local[] = "/.local";
    char share[] = "/share";

    folder_path = malloc(strlen(env) + strlen(local) + 
      strlen(share) + strlen(SETTINGS_FOLDER) + 2);

    sprintf(folder_path, "%s%s", env, local);
    error += make_folder(folder_path);

    strcat(folder_path, share);
    error += make_folder(folder_path);

    if (error <= 1) {
      printf("Failed to create Folder");
      return 1;
    } 
  } else {
    folder_path = malloc(strlen(env) + strlen(SETTINGS_FOLDER) + 2);
    sprintf(folder_path, "%s", env);
  }

  sprintf(folder_path + strlen(folder_path), "/%s", SETTINGS_FOLDER);
  if (!make_folder(folder_path)) {
    printf("Failed to create Folder");
    return 1;
  }

  char *settings_path = malloc(strlen(folder_path) + strlen(SETTINGS_FILE) + 2); 
  sprintf(settings_path, "%s/%s", folder_path, SETTINGS_FILE);


  {
    FILE* setting_file = fopen(settings_path, "r");

    if (setting_file != NULL) {
      
      char setting_input[STRING_LEN]; 

      fgets(setting_input, sizeof(setting_input), setting_file);
      game_speed = string_to_num(setting_input, 0, SPEED_L - 1, game_speed);

      fgets(setting_input, sizeof(setting_input), setting_file);
      game_size.x = string_to_num(setting_input, MIN_SIZE, MAX_SIZE, game_size.x);

      fgets(setting_input, sizeof(setting_input), setting_file);
      game_size.y = string_to_num(setting_input, MIN_SIZE, MAX_SIZE, game_size.y);

      fclose(setting_file);
    }
  }

  char *score_path = malloc(strlen(folder_path) + strlen(SCORE_FILE) + 2);
  sprintf(score_path, "%s/%s", folder_path, SCORE_FILE);

  free(folder_path);

  {
    FILE* score_file = fopen(score_path, "r");

    if (score_file != NULL) {

      char score_input[STRING_LEN];

      uint8_t i;
      for (i = 0; i < SCORE_NUMBER; i++) {
        fgets(score_input, sizeof(score_input), score_file);
        if (score_input[0] != '\0') {
          uint8_t j;
          for(j = 0; score_input[j] != '\0'; j++) {
            if (score_input[j] == '\n' || score_input[j] == ' ' || score_input[j] == '\t') {
              score_input[j] = '\0';
              break;
            }
          }
          score_input[SCORE_LEN - 1] = '\0';
          strncpy(leader_board[i].name, score_input, SCORE_LEN);
        }

        fgets(score_input, sizeof(score_input), score_file);
        leader_board[i].points = string_to_num(score_input, 0, UINT16_MAX, leader_board[i].points);
      }
      fclose(score_file);
    }
  }

  /* Setting up terminal with termios */

  struct termios old, new;

  tcgetattr(STDIN_FILENO, &old);

  new = old;

  new.c_lflag &= ~(ECHO | ICANON);
  new.c_cc[VMIN] = 0;
  new.c_cc[VTIME] = 0;

  tcsetattr(STDIN_FILENO, TCSANOW, &new);

  srand(time(NULL));

  printf("\033[?25l");

  struct winsize init_size, current_size;
  ioctl(STDOUT_FILENO, TIOCGWINSZ, &init_size);
  current_size = init_size;
  bool too_small = false;

  bool gameloop = true;

  /* Animation at the start */
  if (!start_animation())
    gameloop = false;


  /* Menu */

  bool menu = true;
  main_menu setting = MAIN_MENU;
  bool change_menu = true;

  main_menu selected_menu = NEW_GAME;
  settings selected_setting = HEIGHT_S;

  uint16_t score = 0;
  
  snake my_snake;
  my_snake.position = NULL;

  board_state **board = NULL;
  board_state *values = NULL;


  struct timespec mili100 = {0, 1000000 * 100};

  while(gameloop) {

    bool play_game = false;

    while (menu) {

      direction pressed_key = DIRECTIONS;

      char string[STRING_LEN] = {};
      ssize_t length_string = read(STDIN_FILENO, string, sizeof(string) - 1);


      ioctl(STDOUT_FILENO, TIOCGWINSZ, &current_size);

      if (current_size.ws_col != init_size.ws_col ||
          current_size.ws_row != init_size.ws_row) {
        init_size = current_size;
        change_menu = true;
      }


      if (length_string > 0) {
        string[length_string] = '\0';

        pressed_key = read_direction(string, false);
      }

      if (pressed_key == Q_KEY || pressed_key == ESCAPE) {
        if (setting != MAIN_MENU) {
          setting = MAIN_MENU;
          change_menu = true;
        } else {
          gameloop = false;
          break;
        }
      }


      if (setting == MAIN_MENU) {
        
        if (!too_small) {
          switch (pressed_key) {
            case UP:
              selected_menu = (selected_menu + (MAIN_MENU - 1)) % MAIN_MENU;
              change_menu = true;
              break;
            case DOWN:
              selected_menu = (selected_menu + 1) % MAIN_MENU;
              change_menu = true;
              break;
            default:
              break;
          }
        }

        if (change_menu) {
          too_small = draw_menu(selected_menu, init_size);
          change_menu = false;
        }

        if (pressed_key == ENTER && !too_small) {
          switch (selected_menu) {
          case NEW_GAME:
            menu = false;
            play_game = true;
            break;
          case SETTINGS:
            setting = SETTINGS;
            break;
          case HIGHSCORE:
            setting = HIGHSCORE;
            break;
          default:
            menu = false;
            gameloop = false; 
            break;
          }
          change_menu = true;
        }

      } else if (setting == SETTINGS) {

        /* Settings Menu */

        if (change_menu) {
          
          draw_settings(selected_setting, game_speed, game_size, init_size);

          change_menu = false;
        }


        if (pressed_key < DIRECTIONS) {

          int8_t setting_change = 0;

          switch (pressed_key) {
            case UP:
              selected_setting = (selected_setting + (SETTINGS_MENU - 1)) % SETTINGS_MENU;
              break;
            case DOWN:
              selected_setting = (selected_setting + 1) % SETTINGS_MENU;
              break;
            case LEFT:
              setting_change = 1;
              break;
            case RIGHT:
              setting_change = -1;
              break;
            default:
              break;
          }
          
          if (setting_change) {
            switch (selected_setting) {
              case SPEED_S:
                if (
                  game_speed + setting_change <= SPEED_L - 1 &&
                  ((int8_t) game_speed) + setting_change >= 0 
                ) {
                  game_speed += setting_change;
                }
                break;
              case WIDTH_S:
                if (
                  game_size.x - setting_change >= MIN_SIZE &&
                  game_size.x - setting_change <= MAX_SIZE
                ) {
                  game_size.x -= setting_change;
                }
                break;
              case HEIGHT_S:
                if (
                  game_size.y - setting_change >= MIN_SIZE &&
                  game_size.y - setting_change <= MAX_SIZE
                ) {
                  game_size.y -= setting_change;
                }
                break;
              default:
                break;
            }
          }

          change_menu = true;

        }

        if (pressed_key == ENTER) {
          switch (selected_setting) {
            case BACK_S:
              setting = MAIN_MENU;
              break;
            default:
              break;
          }
          change_menu = true;
        }
      } else if (setting == HIGHSCORE) {
        
        if(change_menu) {
          uint8_t i;

          for (i = 0; i < SCORE_NUMBER; i++) {
            if (score > leader_board[i].points)
              break;
          }

          if (i < SCORE_NUMBER) {

            uint8_t new_score = i;

            for (i = SCORE_NUMBER - 1; i > new_score; i--) {
              leader_board[i] = leader_board[i -1]; 
            }

            leader_board[new_score].points = score;
            leader_board[new_score].name[0] = '\0';

            draw_highscore (new_score, leader_board, init_size);
      
            score = 0;
            change_menu = true;

          } else {
            if (change_menu) {
              draw_highscore (-1, leader_board, init_size);
              change_menu = false;
            }
          }
        }

        if(pressed_key == ENTER) {
          setting = MAIN_MENU;
          change_menu = true;
        }
      } else if(setting == NEW_GAME) {

        if (change_menu) {
          draw_board(game_size, board, init_size, true, 2, score);
          change_menu = false;
        }

        if(pressed_key == ENTER) {
          setting = HIGHSCORE;
          change_menu = true;

          free(my_snake.position);
          free(board);
          free(values);
          my_snake.position = NULL;
          board = NULL;
          values = NULL;
        }
      }

      nanosleep(&mili100, NULL);
    }

    menu = true;

    /* initialisation of the game */
  
    if(play_game) {

      bool run = true;

      my_snake.length = STARTING_LENGTH;

      my_snake.position = malloc((my_snake.length + 1) * sizeof(snake_part));

      direction shift = RIGHT;
      direction tmp_direction = shift;

      {
        uint16_t i;

        my_snake.position[0].coords.y = game_size.y >> 1;
        my_snake.position[0].coords.x = game_size.x >> 1;
        my_snake.position[0].directions[0] = shift;
        my_snake.position[0].directions[1] = shift;
        for (i = 1; i <= my_snake.length; i++) {
          my_snake.position[i].coords.y = -1;
          my_snake.position[i].coords.x = -1;
        }
      }

      board = malloc(game_size.y * sizeof(board_state*));
      values = calloc(game_size.y * game_size.x, sizeof(board_state));

      if(board == NULL || values == NULL)
        run = false;  

      {
        uint8_t i;

        for (i = 0; i < game_size.y; i++)
          board[i] = values + i * game_size.x;
      }

      update_field(my_snake, game_size, board, true);

      uint8_t paused = 0;


      if ((too_small = draw_board(game_size, board, current_size, true, 0, score)))
        paused = 1;


      struct timespec milispeed = {0, 1000000 * (SPEED + game_speed * 25)};

      /* start of the actual game loop */

      while (run) {

        /* input handling  */


        direction pressed_key;

        char string[STRING_LEN] = {};
        ssize_t length_string = read(STDIN_FILENO, string, sizeof(string) - 1);

        if (length_string > 0) {
          string[length_string] = '\0';

          pressed_key = read_direction(string, true);

          if (!too_small) {
            if (pressed_key == P_KEY || pressed_key == ENTER) {
              paused = (paused == 1) ? 0 : 1;
              if (paused)
                draw_board(game_size, board, current_size, true, paused, score);
            } 

            if (!paused && pressed_key < DIRECTIONS)
              tmp_direction = pressed_key;
          }

          if (pressed_key == Q_KEY || pressed_key == ESCAPE)
            run = false;
        }

        /* game logic */

        /*
        struct timeval current;
        gettimeofday(&current, NULL);*/

        if (/*time_diff >= SPEED * 1000*/ true) {

          ioctl(STDOUT_FILENO, TIOCGWINSZ, &current_size);

          if (current_size.ws_col != init_size.ws_col ||
              current_size.ws_row != init_size.ws_row) {
            init_size = current_size;

            paused = 1;
            too_small = draw_board(game_size, board, current_size, true, paused, score);
          }

          if (!paused) {

            if (tmp_direction < DIRECTIONS &&
                ((shift + (DIRECTIONS >> 1)) % DIRECTIONS) != tmp_direction) {
              shift = tmp_direction;
            }

            uint8_t update = update_snake(game_size ,&my_snake, shift);

            uint8_t head_y = my_snake.position[0].coords.y;
            uint8_t head_x = my_snake.position[0].coords.x;

            if (board[head_y][head_x] == FRUIT) {
              my_snake.length++;
              score += 1 + 
                (((MAX_SIZE >> 1) / (game_size.y) + 
                (MAX_SIZE >> 1) / (game_size.x) + 
                (my_snake.length - STARTING_LENGTH)) / (game_speed + 1));
              snake_part *tmp = realloc(my_snake.position, (my_snake.length + 1) * sizeof(snake_part));
              if (tmp == NULL) {
                gameloop = false;
                break;
              }
              my_snake.position = tmp;

              my_snake.position[my_snake.length].coords.y = -1;
              my_snake.position[my_snake.length].coords.x = -1;
            }

            update_field(my_snake, game_size, board, false);

            draw_board(game_size, board, current_size, false, 0, score);

            switch (update) {
              case 0: 
                gameloop = false;
                break;
              case 2:
                setting = NEW_GAME;
                run = false;
                break;
              default:
                break;
            }

          }
        }
        nanosleep(&milispeed, NULL);
      }
    }
  }



  free(my_snake.position);
  free(board);
  free(values);

  tcsetattr(STDIN_FILENO, TCSANOW, &old);
  printf("\033[?25h\n\n");

  printf("\033[32m");
  printf("\033[2J\033[H");


  {
    FILE* setting_file = fopen(settings_path, "w");

    fprintf(setting_file, "%d\n%d\n%d", game_speed, game_size.x, game_size.y);
    
    fclose(setting_file);

    FILE* score_file = fopen(score_path, "w");
    uint8_t i;

    for (i = 0; i < SCORE_NUMBER; i++) {
      fprintf(score_file, "%s\n%i\n", leader_board[i].name, leader_board[i].points);
    }

    fclose(score_file);
  }

  free(settings_path);
  free(score_path);

  printf("\033[?1049l");
  
  return 0;
}

1	#include "snake.h"
2
3
4	int main(int argc, char *args[]) {
5
6	/* command argument handling */
7
8	printf("\033[?1049h");
9
10	if (argc > 1) {
11	if (argc > 2) {
12	printf("Too many parameters\n");
13	goto help_info;
14	}
15
16	if (!strcmp(args[1], "-h") \|\| !strcmp(args[1], "--help")) {
17
18	printf("This is a small TUI snake game.\n\n");
19	printf("Controls: Arrow keys/WASD to control the snake.\n");
20	printf(" P/Enter to pause.\n");
21	printf(" Q to quit.\n");
22
23	printf("\033[?1049l");
24	return 0;
25	}
26
27	printf("Argument \"%s\" not recognized\n", args[1]);
28
29	help_info:
30	printf("Try \"-h\" or \"--help\" for more information\n");
31	return 1;
32	}
33
34
35	/* game settings */
36
37	speed game_speed = AVERAGE;
38	selected game_size = {WIDTH, HEIGHT};
39
40	score leader_board[SCORE_NUMBER] = {};
41
42	/* Handling Files to store settings & highscores */
43
44	char *env;
45	char *folder_path;
46
47	if ((env = getenv("XDG_DATA_HOME")) == NULL) {
48	if ((env = getenv("HOME")) == NULL) {
49	printf("are you ok?\n");
50	return 1;
51	}
52
53	uint8_t error = 0;
54
55	char local[] = "/.local";
56	char share[] = "/share";
57
58	folder_path = malloc(strlen(env) + strlen(local) +
59	strlen(share) + strlen(SETTINGS_FOLDER) + 2);
60
61	sprintf(folder_path, "%s%s", env, local);
62	error += make_folder(folder_path);
63
64	strcat(folder_path, share);
65	error += make_folder(folder_path);
66
67	if (error <= 1) {
68	printf("Failed to create Folder");
69	return 1;
70	}
71	} else {
72	folder_path = malloc(strlen(env) + strlen(SETTINGS_FOLDER) + 2);
73	sprintf(folder_path, "%s", env);
74	}
75
76	sprintf(folder_path + strlen(folder_path), "/%s", SETTINGS_FOLDER);
77	if (!make_folder(folder_path)) {
78	printf("Failed to create Folder");
79	return 1;
80	}
81
82	char *settings_path = malloc(strlen(folder_path) + strlen(SETTINGS_FILE) + 2);
83	sprintf(settings_path, "%s/%s", folder_path, SETTINGS_FILE);
84
85
86	{
87	FILE* setting_file = fopen(settings_path, "r");
88
89	if (setting_file != NULL) {
90
91	char setting_input[STRING_LEN];
92
93	fgets(setting_input, sizeof(setting_input), setting_file);
94	game_speed = string_to_num(setting_input, 0, SPEED_L - 1, game_speed);
95
96	fgets(setting_input, sizeof(setting_input), setting_file);
97	game_size.x = string_to_num(setting_input, MIN_SIZE, MAX_SIZE, game_size.x);
98
99	fgets(setting_input, sizeof(setting_input), setting_file);
100	game_size.y = string_to_num(setting_input, MIN_SIZE, MAX_SIZE, game_size.y);
101
102	fclose(setting_file);
103	}
104	}
105
106	char *score_path = malloc(strlen(folder_path) + strlen(SCORE_FILE) + 2);
107	sprintf(score_path, "%s/%s", folder_path, SCORE_FILE);
108
109	free(folder_path);
110
111	{
112	FILE* score_file = fopen(score_path, "r");
113
114	if (score_file != NULL) {
115
116	char score_input[STRING_LEN];
117
118	uint8_t i;
119	for (i = 0; i < SCORE_NUMBER; i++) {
120	fgets(score_input, sizeof(score_input), score_file);
121	if (score_input[0] != '\0') {
122	uint8_t j;
123	for(j = 0; score_input[j] != '\0'; j++) {
124	if (score_input[j] == '\n' \|\| score_input[j] == ' ' \|\| score_input[j] == '\t') {
125	score_input[j] = '\0';
126	break;
127	}
128	}
129	score_input[SCORE_LEN - 1] = '\0';
130	strncpy(leader_board[i].name, score_input, SCORE_LEN);
131	}
132
133	fgets(score_input, sizeof(score_input), score_file);
134	leader_board[i].points = string_to_num(score_input, 0, UINT16_MAX, leader_board[i].points);
135	}
136	fclose(score_file);
137	}
138	}
139
140	/* Setting up terminal with termios */
141
142	struct termios old, new;
143
144	tcgetattr(STDIN_FILENO, &old);
145
146	new = old;
147
148	new.c_lflag &= ~(ECHO \| ICANON);
149	new.c_cc[VMIN] = 0;
150	new.c_cc[VTIME] = 0;
151
152	tcsetattr(STDIN_FILENO, TCSANOW, &new);
153
154	srand(time(NULL));
155
156	printf("\033[?25l");
157
158	struct winsize init_size, current_size;
159	ioctl(STDOUT_FILENO, TIOCGWINSZ, &init_size);
160	current_size = init_size;
161	bool too_small = false;
162
163	bool gameloop = true;
164
165	/* Animation at the start */
166	if (!start_animation())
167	gameloop = false;
168
169
170	/* Menu */
171
172	bool menu = true;
173	main_menu setting = MAIN_MENU;
174	bool change_menu = true;
175
176	main_menu selected_menu = NEW_GAME;
177	settings selected_setting = HEIGHT_S;
178
179	uint16_t score = 0;
180
181	snake my_snake;
182	my_snake.position = NULL;
183
184	board_state **board = NULL;
185	board_state *values = NULL;
186
187
188	struct timespec mili100 = {0, 1000000 * 100};
189
190	while(gameloop) {
191
192	bool play_game = false;
193
194	while (menu) {
195
196	direction pressed_key = DIRECTIONS;
197
198	char string[STRING_LEN] = {};
199	ssize_t length_string = read(STDIN_FILENO, string, sizeof(string) - 1);
200
201
202	ioctl(STDOUT_FILENO, TIOCGWINSZ, &current_size);
203
204	if (current_size.ws_col != init_size.ws_col \|\|
205	current_size.ws_row != init_size.ws_row) {
206	init_size = current_size;
207	change_menu = true;
208	}
209
210
211	if (length_string > 0) {
212	string[length_string] = '\0';
213
214	pressed_key = read_direction(string, false);
215	}
216
217	if (pressed_key == Q_KEY \|\| pressed_key == ESCAPE) {
218	if (setting != MAIN_MENU) {
219	setting = MAIN_MENU;
220	change_menu = true;
221	} else {
222	gameloop = false;
223	break;
224	}
225	}
226
227
228	if (setting == MAIN_MENU) {
229
230	if (!too_small) {
231	switch (pressed_key) {
232	case UP:
233	selected_menu = (selected_menu + (MAIN_MENU - 1)) % MAIN_MENU;
234	change_menu = true;
235	break;
236	case DOWN:
237	selected_menu = (selected_menu + 1) % MAIN_MENU;
238	change_menu = true;
239	break;
240	default:
241	break;
242	}
243	}
244
245	if (change_menu) {
246	too_small = draw_menu(selected_menu, init_size);
247	change_menu = false;
248	}
249
250	if (pressed_key == ENTER && !too_small) {
251	switch (selected_menu) {
252	case NEW_GAME:
253	menu = false;
254	play_game = true;
255	break;
256	case SETTINGS:
257	setting = SETTINGS;
258	break;
259	case HIGHSCORE:
260	setting = HIGHSCORE;
261	break;
262	default:
263	menu = false;
264	gameloop = false;
265	break;
266	}
267	change_menu = true;
268	}
269
270	} else if (setting == SETTINGS) {
271
272	/* Settings Menu */
273
274	if (change_menu) {
275
276	draw_settings(selected_setting, game_speed, game_size, init_size);
277
278	change_menu = false;
279	}
280
281
282	if (pressed_key < DIRECTIONS) {
283
284	int8_t setting_change = 0;
285
286	switch (pressed_key) {
287	case UP:
288	selected_setting = (selected_setting + (SETTINGS_MENU - 1)) % SETTINGS_MENU;
289	break;
290	case DOWN:
291	selected_setting = (selected_setting + 1) % SETTINGS_MENU;
292	break;
293	case LEFT:
294	setting_change = 1;
295	break;
296	case RIGHT:
297	setting_change = -1;
298	break;
299	default:
300	break;
301	}
302
303	if (setting_change) {
304	switch (selected_setting) {
305	case SPEED_S:
306	if (
307	game_speed + setting_change <= SPEED_L - 1 &&
308	((int8_t) game_speed) + setting_change >= 0
309	) {
310	game_speed += setting_change;
311	}
312	break;
313	case WIDTH_S:
314	if (
315	game_size.x - setting_change >= MIN_SIZE &&
316	game_size.x - setting_change <= MAX_SIZE
317	) {
318	game_size.x -= setting_change;
319	}
320	break;
321	case HEIGHT_S:
322	if (
323	game_size.y - setting_change >= MIN_SIZE &&
324	game_size.y - setting_change <= MAX_SIZE
325	) {
326	game_size.y -= setting_change;
327	}
328	break;
329	default:
330	break;
331	}
332	}
333
334	change_menu = true;
335
336	}
337
338	if (pressed_key == ENTER) {
339	switch (selected_setting) {
340	case BACK_S:
341	setting = MAIN_MENU;
342	break;
343	default:
344	break;
345	}
346	change_menu = true;
347	}
348	} else if (setting == HIGHSCORE) {
349
350	if(change_menu) {
351	uint8_t i;
352
353	for (i = 0; i < SCORE_NUMBER; i++) {
354	if (score > leader_board[i].points)
355	break;
356	}
357
358	if (i < SCORE_NUMBER) {
359
360	uint8_t new_score = i;
361
362	for (i = SCORE_NUMBER - 1; i > new_score; i--) {
363	leader_board[i] = leader_board[i -1];
364	}
365
366	leader_board[new_score].points = score;
367	leader_board[new_score].name[0] = '\0';
368
369	draw_highscore (new_score, leader_board, init_size);
370
371	score = 0;
372	change_menu = true;
373
374	} else {
375	if (change_menu) {
376	draw_highscore (-1, leader_board, init_size);
377	change_menu = false;
378	}
379	}
380	}
381
382	if(pressed_key == ENTER) {
383	setting = MAIN_MENU;
384	change_menu = true;
385	}
386	} else if(setting == NEW_GAME) {
387
388	if (change_menu) {
389	draw_board(game_size, board, init_size, true, 2, score);
390	change_menu = false;
391	}
392
393	if(pressed_key == ENTER) {
394	setting = HIGHSCORE;
395	change_menu = true;
396
397	free(my_snake.position);
398	free(board);
399	free(values);
400	my_snake.position = NULL;
401	board = NULL;
402	values = NULL;
403	}
404	}
405
406	nanosleep(&mili100, NULL);
407	}
408
409	menu = true;
410
411	/* initialisation of the game */
412
413	if(play_game) {
414
415	bool run = true;
416
417	my_snake.length = STARTING_LENGTH;
418
419	my_snake.position = malloc((my_snake.length + 1) * sizeof(snake_part));
420
421	direction shift = RIGHT;
422	direction tmp_direction = shift;
423
424	{
425	uint16_t i;
426
427	my_snake.position[0].coords.y = game_size.y >> 1;
428	my_snake.position[0].coords.x = game_size.x >> 1;
429	my_snake.position[0].directions[0] = shift;
430	my_snake.position[0].directions[1] = shift;
431	for (i = 1; i <= my_snake.length; i++) {
432	my_snake.position[i].coords.y = -1;
433	my_snake.position[i].coords.x = -1;
434	}
435	}
436
437	board = malloc(game_size.y * sizeof(board_state*));
438	values = calloc(game_size.y * game_size.x, sizeof(board_state));
439
440	if(board == NULL \|\| values == NULL)
441	run = false;
442
443	{
444	uint8_t i;
445
446	for (i = 0; i < game_size.y; i++)
447	board[i] = values + i * game_size.x;
448	}
449
450	update_field(my_snake, game_size, board, true);
451
452	uint8_t paused = 0;
453
454
455	if ((too_small = draw_board(game_size, board, current_size, true, 0, score)))
456	paused = 1;
457
458
459	struct timespec milispeed = {0, 1000000 * (SPEED + game_speed * 25)};
460
461	/* start of the actual game loop */
462
463	while (run) {
464
465	/* input handling */
466
467
468	direction pressed_key;
469
470	char string[STRING_LEN] = {};
471	ssize_t length_string = read(STDIN_FILENO, string, sizeof(string) - 1);
472
473	if (length_string > 0) {
474	string[length_string] = '\0';
475
476	pressed_key = read_direction(string, true);
477
478	if (!too_small) {
479	if (pressed_key == P_KEY \|\| pressed_key == ENTER) {
480	paused = (paused == 1) ? 0 : 1;
481	if (paused)
482	draw_board(game_size, board, current_size, true, paused, score);
483	}
484
485	if (!paused && pressed_key < DIRECTIONS)
486	tmp_direction = pressed_key;
487	}
488
489	if (pressed_key == Q_KEY \|\| pressed_key == ESCAPE)
490	run = false;
491	}
492
493	/* game logic */
494
495	/*
496	struct timeval current;
497	gettimeofday(&current, NULL);*/
498
499	if (/time_diff >= SPEED 1000*/ true) {
500
501	ioctl(STDOUT_FILENO, TIOCGWINSZ, &current_size);
502
503	if (current_size.ws_col != init_size.ws_col \|\|
504	current_size.ws_row != init_size.ws_row) {
505	init_size = current_size;
506
507	paused = 1;
508	too_small = draw_board(game_size, board, current_size, true, paused, score);
509	}
510
511	if (!paused) {
512
513	if (tmp_direction < DIRECTIONS &&
514	((shift + (DIRECTIONS >> 1)) % DIRECTIONS) != tmp_direction) {
515	shift = tmp_direction;
516	}
517
518	uint8_t update = update_snake(game_size ,&my_snake, shift);
519
520	uint8_t head_y = my_snake.position[0].coords.y;
521	uint8_t head_x = my_snake.position[0].coords.x;
522
523	if (board[head_y][head_x] == FRUIT) {
524	my_snake.length++;
525	score += 1 +
526	(((MAX_SIZE >> 1) / (game_size.y) +
527	(MAX_SIZE >> 1) / (game_size.x) +
528	(my_snake.length - STARTING_LENGTH)) / (game_speed + 1));
529	snake_part tmp = realloc(my_snake.position, (my_snake.length + 1) sizeof(snake_part));
530	if (tmp == NULL) {
531	gameloop = false;
532	break;
533	}
534	my_snake.position = tmp;
535
536	my_snake.position[my_snake.length].coords.y = -1;
537	my_snake.position[my_snake.length].coords.x = -1;
538	}
539
540	update_field(my_snake, game_size, board, false);
541
542	draw_board(game_size, board, current_size, false, 0, score);
543
544	switch (update) {
545	case 0:
546	gameloop = false;
547	break;
548	case 2:
549	setting = NEW_GAME;
550	run = false;
551	break;
552	default:
553	break;
554	}
555
556	}
557	}
558	nanosleep(&milispeed, NULL);
559	}
560	}
561	}
562
563
564
565	free(my_snake.position);
566	free(board);
567	free(values);
568
569	tcsetattr(STDIN_FILENO, TCSANOW, &old);
570	printf("\033[?25h\n\n");
571
572	printf("\033[32m");
573	printf("\033[2J\033[H");
574
575
576	{
577	FILE* setting_file = fopen(settings_path, "w");
578
579	fprintf(setting_file, "%d\n%d\n%d", game_speed, game_size.x, game_size.y);
580
581	fclose(setting_file);
582
583	FILE* score_file = fopen(score_path, "w");
584	uint8_t i;
585
586	for (i = 0; i < SCORE_NUMBER; i++) {
587	fprintf(score_file, "%s\n%i\n", leader_board[i].name, leader_board[i].points);
588	}
589
590	fclose(score_file);
591	}
592
593	free(settings_path);
594	free(score_path);
595
596	printf("\033[?1049l");
597
598	return 0;
599	}