tetoris_c

public

Small block game in C

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7 commits 1 branch 2 tags 0 releases791.9 KiB

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

#include <termios.h>
#include <sys/ioctl.h>
#include <sys/stat.h>

#include <time.h>
#include <unistd.h>

#include <errno.h>


/* TETRIS */

#define FIELD_WIDTH 10
#define FIELD_HEIGHT 20

#define BORDER_WIDTH 2
#define TOP_GAP 1

#define FULL_WIDTH (FIELD_WIDTH + BORDER_WIDTH * 2)
#define FULL_HEIGHT (FIELD_HEIGHT + BORDER_WIDTH + TOP_GAP)

typedef enum {
  EMPTY, I_PIECE, J_PIECE, L_PIECE, O_PIECE, S_PIECE, T_PIECE, Z_PIECE, TETRIS
} tetromino;

typedef enum {
  TOP, RIGHT, BOTTOM, LEFT
} direction;

typedef struct {
  tetromino name;
  bool piece[4][4];
  int8_t x;
  int8_t y;
  uint8_t size;
  direction rotation;
} piece;

typedef struct {
  int8_t x;
  int8_t y;
} coord;

tetromino playfield[FULL_HEIGHT][FULL_WIDTH] = {};


void init_field();

void draw_board(piece current_piece, int8_t blink, bool is_piece);

piece init_piece(tetromino new_piece);

coord find_direction(piece current_piece, uint8_t x, uint8_t y);
  

int main () {
  

  /* Setting up the seed */
  
  srand(time(NULL));


  /* 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);

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

  printf("\033[?25l\033[?1049h");

  /* Init */

  init_field();


  /* Init the first piece */

  bool is_piece = true;

  piece current_piece = init_piece((rand() % Z_PIECE) + 1);


  uint16_t i;

  for (i = 0;; i = (i + 1) % 20) {

    int8_t move = 0;
    bool down = false;
    bool draw = false;
    bool rotate = false;

    int8_t j, k;

    if (!is_piece) {
      current_piece = init_piece((rand() % Z_PIECE) + 1);
      current_piece.rotation = rand() % (LEFT + 1);
      is_piece = true;
      draw = true;
    }


    /* Take care of the input */


    char buf[10] = {};

    if (read(STDIN_FILENO, buf, sizeof(buf)) > 0) {
      if (buf[0] == 'q') {
        break;
      }

      if (buf[0] == '\033' && buf[1] == '[') {
        
        switch (buf[2]) {
          case 'A':
            rotate = true;
            break;
          case 'B':
            down = true;
            break;
          case 'C':
            move = 1;
            break;
          case 'D':
            move = -1;
            break;
          default:
            break;
        }
      }
    }


    /* Move piece */

    if (move != 0) {
      if (
        current_piece.x + move >= 0 && 
        current_piece.x + move + current_piece.size <= FULL_WIDTH
      ) {
       
        bool is_valid = true;

        for (j = 0; j < current_piece.size; j++) {
          for (k = 0; k < current_piece.size; k++) {

            coord points = find_direction(current_piece, k, j);

            if (
              current_piece.piece[j][k]  && 
              playfield[current_piece.y + points.y][current_piece.x + points.x + move] != EMPTY
            ) {
              is_valid = false;
            }
          }
        }

        if (is_valid) {
          current_piece.x += move;
          draw = true;
        }
      }
    }

    /* Piece rotates */

    
    if (rotate) {
      
      piece rotated = current_piece;

      rotated.rotation = (current_piece.rotation + 1) % (LEFT + 1);

      bool is_valid = true;

      for(j = 0; j < rotated.size; j++) {
        for (k = 0; k < rotated.size; k++) {

          coord points = find_direction(rotated, k, j);

          if (
            rotated.piece[j][k] &&
            playfield[rotated.y + points.y][rotated.x + points.x] != EMPTY
          ) {
            is_valid = false;
          }
        }
      } 
      
      if (is_valid) {
        current_piece = rotated;
        draw = true;
      }

    }
    

    /* Piece falls */

    if (i == 0 || down) {
      current_piece.y++;
      i = 1;
      draw = true;
    }


    /* When a piece is stuck */

    for(j = 0; j < current_piece.size; j++) {
      for (k = 0; k < current_piece.size; k++) {
      
        coord points = find_direction(current_piece, k, j);

        uint8_t x = current_piece.x + points.x;
        uint8_t y = current_piece.y + points.y;

        if (
          y >= FULL_HEIGHT || 
          (playfield[y][x] != EMPTY && current_piece.piece[j][k])
        ) {

          uint8_t l, m;

          for (l = 0; l < current_piece.size; l++) {
            for (m = 0; m < current_piece.size; m++) {
              
              if (current_piece.piece[l][m]) {
                
                coord solid = find_direction(current_piece, m, l);

                playfield[current_piece.y - 1 + solid.y][current_piece.x + solid.x] = current_piece.name;
              }
            }
          }
          is_piece = false;
          draw = true;
        }
      }
    }

    /* Looks if there is a tetris */

    for (j = FIELD_HEIGHT + TOP_GAP - 1; j >= 0; j--) {

      uint8_t is_tetris = 0;

      for (k = 0; k < FIELD_WIDTH; k++) {
        if (playfield[j][k + BORDER_WIDTH] != EMPTY)
          is_tetris++;
      }

      if (is_tetris == 10) {
        
        for (k = 0; k < 4; k++) {
          
          draw_board(current_piece, (k % 2) ? -1 : j, is_piece);

          usleep(300000);
        }

        for (k = j; k > 0; k--) {
          
          int8_t l;
          
          for (l = 0; l < FIELD_WIDTH; l++) {
            playfield[k][l + BORDER_WIDTH] = playfield[k - 1][l + BORDER_WIDTH];
          }
        }
        
        j++;
      }
    }


    /* Looks for game over */

    for (j = 0; j < FIELD_WIDTH; j++) {
      if (playfield[TOP_GAP][j + BORDER_WIDTH] > 0) {
        draw_board(current_piece, -1, is_piece);
        sleep(2);
        printf("\033[2J\033[H");
        printf("HAHA LOSER\n");
        sleep(1);
        goto end;
      }
    }


    if (draw)
      draw_board(current_piece, -1, is_piece);
    usleep(10000);
  }

end:

  printf("\033[?1049l\033[?25h");

  tcsetattr(STDIN_FILENO, TCSANOW, &old);

  return 0;
}



void init_field() {
  uint8_t i, j;
  for(i = 0; i < FULL_HEIGHT; i++) {
    for (j = 0; j < FULL_WIDTH; j++) {
      
      if (
        j < BORDER_WIDTH || 
        j >= FULL_WIDTH - BORDER_WIDTH ||
        i >= FULL_HEIGHT - BORDER_WIDTH
      ) {
        playfield[i][j] = TETRIS; 
      } else {
        playfield[i][j] = EMPTY;
      }
    }
  }
}



#define RED "\033[38;2;255;0;0m"
#define GREEN "\033[38;2;0;255;0m"
#define BLUE "\033[38;2;0;0;255m"
#define YELLOW "\033[38;2;255;255;0m"
#define MAGENTA "\033[38;2;255;0;255m"
#define TEAL "\033[38;2;0;255;255m"
#define PURPLE "\033[38;2;127;0;255m"
#define WHITE "\033[38;2;255;255;255m"

void draw_color (tetromino current_square) {
  switch (current_square) {
    case I_PIECE:
      printf("%s", RED);
      break;
    case J_PIECE:
      printf("%s", GREEN);
      break;
    case L_PIECE:
      printf("%s", BLUE);
      break;
    case O_PIECE:
      printf("%s", YELLOW);
      break;
    case S_PIECE:
      printf("%s", MAGENTA);
      break;
    case T_PIECE:
      printf("%s", TEAL);
      break;
    case Z_PIECE:
      printf("%s", PURPLE);
      break;
  } 
}


void draw_board(piece current_piece, int8_t blink, bool is_piece) {

  uint8_t i, j;


  printf("\033[2J\033[H");
  printf("┏");
  for (i = 0; i < FIELD_WIDTH; i++)
    printf("━━");
  printf("┓\n");


  for (i = 0; i < FIELD_HEIGHT; i++) {
    
    printf("┃");

    for (j = 0; j < FIELD_WIDTH; j++) {
      
      if (i + TOP_GAP == blink) {
  
        printf("%s", WHITE);
      } else {


        tetromino current_square = current_square = playfield[i + TOP_GAP][j + BORDER_WIDTH];

        if (is_piece) {

          uint8_t k, l;
          
          for (k = 0; k < current_piece.size; k++) {
            for (l = 0; l < current_piece.size; l++) {

              coord points = find_direction(current_piece, l, k);

              if (
                i == current_piece.y + points.y - TOP_GAP && 
                j == current_piece.x + points.x - BORDER_WIDTH && 
                current_piece.piece[k][l]) 
              {
                current_square = current_piece.name;
              }
            }
          }
        }

        if (current_square <= EMPTY || current_square > Z_PIECE) {
          printf("· ");
          continue;
        }

        draw_color(current_square);
      }
        
      printf("██\033[0m");
    }
    printf("┃\n");
  }

  printf("┗");
  for (i = 0; i < FIELD_WIDTH; i++)
    printf("━━");
  printf("┛\n");

}


piece init_piece(tetromino new_piece) {
  
  piece current_piece = {};

  current_piece.name = new_piece;

  switch (current_piece.name) {
    case I_PIECE:
      current_piece.size = 4;
      
      current_piece.piece[0][0] = false;
      current_piece.piece[0][1] = false;
      current_piece.piece[0][2] = false;
      current_piece.piece[0][3] = false;

      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = true;
      current_piece.piece[1][3] = true;
      
      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;
      current_piece.piece[2][3] = false;
      
      current_piece.piece[3][0] = false;
      current_piece.piece[3][1] = false;
      current_piece.piece[3][2] = false;
      current_piece.piece[3][3] = false;
      
      break;

    case J_PIECE:
      current_piece.size = 3;
  
      current_piece.piece[0][0] = true;
      current_piece.piece[0][1] = false;
      current_piece.piece[0][2] = false;
      
      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = true;

      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;

      break;

    case L_PIECE:
      current_piece.size = 3;
  
      current_piece.piece[0][0] = false;
      current_piece.piece[0][1] = false;
      current_piece.piece[0][2] = true;
      
      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = true;

      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;

      break;

    case O_PIECE:
      current_piece.size = 2;
  
      current_piece.piece[0][0] = true;
      current_piece.piece[0][1] = true;

      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      
      break;

    case S_PIECE:
      current_piece.size = 3;
  
      current_piece.piece[0][0] = false;
      current_piece.piece[0][1] = true;
      current_piece.piece[0][2] = true;

      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = false;
 
      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;

      break;

    case T_PIECE:
      current_piece.size = 3;
  
      current_piece.piece[0][0] = false;
      current_piece.piece[0][1] = true;
      current_piece.piece[0][2] = false;
      
      current_piece.piece[1][0] = true;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = true;
      
      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;

      break;
    case Z_PIECE:
      current_piece.size = 3;
  
      current_piece.piece[0][0] = true;
      current_piece.piece[0][1] = true;
      current_piece.piece[0][2] = false;

      current_piece.piece[1][0] = false;
      current_piece.piece[1][1] = true;
      current_piece.piece[1][2] = true;

      current_piece.piece[2][0] = false;
      current_piece.piece[2][1] = false;
      current_piece.piece[2][2] = false;

      break;
    default:
      perror("Fuck you\n");
      break;
  }

  current_piece.x = (FIELD_WIDTH >> 1) - (current_piece.size >> 1) + BORDER_WIDTH;
  current_piece.y = TOP_GAP;
  current_piece.rotation = TOP;

  return current_piece;
}

coord find_direction(piece current_piece, uint8_t x, uint8_t y) {

  coord points = {
    x,
    y
  };

  switch (current_piece.rotation) {
    case TOP:
      /*
      x = k;
      y = j;
      */
      break;
    case RIGHT:
      points.x = y;
      points.y = current_piece.size - (x + 1);
      break;
    case BOTTOM:
      points.x = current_piece.size - (x + 1);
      points.y = current_piece.size - (y + 1);
      break;
    case LEFT:
      points.x = current_piece.size - (y + 1);
      points.y = x;
      break;
  }

  return points;
}

1	#include <stdio.h>
2	#include <stdint.h>
3	#include <stdbool.h>
4	#include <stdlib.h>
5
6	#include <termios.h>
7	#include <sys/ioctl.h>
8	#include <sys/stat.h>
9
10	#include <time.h>
11	#include <unistd.h>
12
13	#include <errno.h>
14
15
16	/* TETRIS */
17
18	#define FIELD_WIDTH 10
19	#define FIELD_HEIGHT 20
20
21	#define BORDER_WIDTH 2
22	#define TOP_GAP 1
23
24	#define FULL_WIDTH (FIELD_WIDTH + BORDER_WIDTH * 2)
25	#define FULL_HEIGHT (FIELD_HEIGHT + BORDER_WIDTH + TOP_GAP)
26
27	typedef enum {
28	EMPTY, I_PIECE, J_PIECE, L_PIECE, O_PIECE, S_PIECE, T_PIECE, Z_PIECE, TETRIS
29	} tetromino;
30
31	typedef enum {
32	TOP, RIGHT, BOTTOM, LEFT
33	} direction;
34
35	typedef struct {
36	tetromino name;
37	bool piece[4][4];
38	int8_t x;
39	int8_t y;
40	uint8_t size;
41	direction rotation;
42	} piece;
43
44	typedef struct {
45	int8_t x;
46	int8_t y;
47	} coord;
48
49	tetromino playfield[FULL_HEIGHT][FULL_WIDTH] = {};
50
51
52	void init_field();
53
54	void draw_board(piece current_piece, int8_t blink, bool is_piece);
55
56	piece init_piece(tetromino new_piece);
57
58	coord find_direction(piece current_piece, uint8_t x, uint8_t y);
59
60
61	int main () {
62
63
64	/* Setting up the seed */
65
66	srand(time(NULL));
67
68
69	/* Setting up terminal with termios */
70
71	struct termios old, new;
72
73	tcgetattr(STDIN_FILENO, &old);
74	new = old;
75
76	new.c_lflag &= ~(ECHO \| ICANON);
77	new.c_cc[VMIN] = 0;
78	new.c_cc[VTIME] = 0;
79
80	tcsetattr(STDIN_FILENO, TCSANOW, &new);
81
82	struct winsize init_size, current_size;
83	ioctl(STDOUT_FILENO, TIOCGWINSZ, &init_size);
84	current_size = init_size;
85
86	printf("\033[?25l\033[?1049h");
87
88	/* Init */
89
90	init_field();
91
92
93	/* Init the first piece */
94
95	bool is_piece = true;
96
97	piece current_piece = init_piece((rand() % Z_PIECE) + 1);
98
99
100	uint16_t i;
101
102	for (i = 0;; i = (i + 1) % 20) {
103
104	int8_t move = 0;
105	bool down = false;
106	bool draw = false;
107	bool rotate = false;
108
109	int8_t j, k;
110
111	if (!is_piece) {
112	current_piece = init_piece((rand() % Z_PIECE) + 1);
113	current_piece.rotation = rand() % (LEFT + 1);
114	is_piece = true;
115	draw = true;
116	}
117
118
119	/* Take care of the input */
120
121
122	char buf[10] = {};
123
124	if (read(STDIN_FILENO, buf, sizeof(buf)) > 0) {
125	if (buf[0] == 'q') {
126	break;
127	}
128
129	if (buf[0] == '\033' && buf[1] == '[') {
130
131	switch (buf[2]) {
132	case 'A':
133	rotate = true;
134	break;
135	case 'B':
136	down = true;
137	break;
138	case 'C':
139	move = 1;
140	break;
141	case 'D':
142	move = -1;
143	break;
144	default:
145	break;
146	}
147	}
148	}
149
150
151	/* Move piece */
152
153	if (move != 0) {
154	if (
155	current_piece.x + move >= 0 &&
156	current_piece.x + move + current_piece.size <= FULL_WIDTH
157	) {
158
159	bool is_valid = true;
160
161	for (j = 0; j < current_piece.size; j++) {
162	for (k = 0; k < current_piece.size; k++) {
163
164	coord points = find_direction(current_piece, k, j);
165
166	if (
167	current_piece.piece[j][k] &&
168	playfield[current_piece.y + points.y][current_piece.x + points.x + move] != EMPTY
169	) {
170	is_valid = false;
171	}
172	}
173	}
174
175	if (is_valid) {
176	current_piece.x += move;
177	draw = true;
178	}
179	}
180	}
181
182	/* Piece rotates */
183
184
185	if (rotate) {
186
187	piece rotated = current_piece;
188
189	rotated.rotation = (current_piece.rotation + 1) % (LEFT + 1);
190
191	bool is_valid = true;
192
193	for(j = 0; j < rotated.size; j++) {
194	for (k = 0; k < rotated.size; k++) {
195
196	coord points = find_direction(rotated, k, j);
197
198	if (
199	rotated.piece[j][k] &&
200	playfield[rotated.y + points.y][rotated.x + points.x] != EMPTY
201	) {
202	is_valid = false;
203	}
204	}
205	}
206
207	if (is_valid) {
208	current_piece = rotated;
209	draw = true;
210	}
211
212	}
213
214
215	/* Piece falls */
216
217	if (i == 0 \|\| down) {
218	current_piece.y++;
219	i = 1;
220	draw = true;
221	}
222
223
224	/* When a piece is stuck */
225
226	for(j = 0; j < current_piece.size; j++) {
227	for (k = 0; k < current_piece.size; k++) {
228
229	coord points = find_direction(current_piece, k, j);
230
231	uint8_t x = current_piece.x + points.x;
232	uint8_t y = current_piece.y + points.y;
233
234	if (
235	y >= FULL_HEIGHT \|\|
236	(playfield[y][x] != EMPTY && current_piece.piece[j][k])
237	) {
238
239	uint8_t l, m;
240
241	for (l = 0; l < current_piece.size; l++) {
242	for (m = 0; m < current_piece.size; m++) {
243
244	if (current_piece.piece[l][m]) {
245
246	coord solid = find_direction(current_piece, m, l);
247
248	playfield[current_piece.y - 1 + solid.y][current_piece.x + solid.x] = current_piece.name;
249	}
250	}
251	}
252	is_piece = false;
253	draw = true;
254	}
255	}
256	}
257
258	/* Looks if there is a tetris */
259
260	for (j = FIELD_HEIGHT + TOP_GAP - 1; j >= 0; j--) {
261
262	uint8_t is_tetris = 0;
263
264	for (k = 0; k < FIELD_WIDTH; k++) {
265	if (playfield[j][k + BORDER_WIDTH] != EMPTY)
266	is_tetris++;
267	}
268
269	if (is_tetris == 10) {
270
271	for (k = 0; k < 4; k++) {
272
273	draw_board(current_piece, (k % 2) ? -1 : j, is_piece);
274
275	usleep(300000);
276	}
277
278	for (k = j; k > 0; k--) {
279
280	int8_t l;
281
282	for (l = 0; l < FIELD_WIDTH; l++) {
283	playfield[k][l + BORDER_WIDTH] = playfield[k - 1][l + BORDER_WIDTH];
284	}
285	}
286
287	j++;
288	}
289	}
290
291
292	/* Looks for game over */
293
294	for (j = 0; j < FIELD_WIDTH; j++) {
295	if (playfield[TOP_GAP][j + BORDER_WIDTH] > 0) {
296	draw_board(current_piece, -1, is_piece);
297	sleep(2);
298	printf("\033[2J\033[H");
299	printf("HAHA LOSER\n");
300	sleep(1);
301	goto end;
302	}
303	}
304
305
306	if (draw)
307	draw_board(current_piece, -1, is_piece);
308	usleep(10000);
309	}
310
311	end:
312
313	printf("\033[?1049l\033[?25h");
314
315	tcsetattr(STDIN_FILENO, TCSANOW, &old);
316
317	return 0;
318	}
319
320
321
322	void init_field() {
323	uint8_t i, j;
324	for(i = 0; i < FULL_HEIGHT; i++) {
325	for (j = 0; j < FULL_WIDTH; j++) {
326
327	if (
328	j < BORDER_WIDTH \|\|
329	j >= FULL_WIDTH - BORDER_WIDTH \|\|
330	i >= FULL_HEIGHT - BORDER_WIDTH
331	) {
332	playfield[i][j] = TETRIS;
333	} else {
334	playfield[i][j] = EMPTY;
335	}
336	}
337	}
338	}
339
340
341
342	#define RED "\033[38;2;255;0;0m"
343	#define GREEN "\033[38;2;0;255;0m"
344	#define BLUE "\033[38;2;0;0;255m"
345	#define YELLOW "\033[38;2;255;255;0m"
346	#define MAGENTA "\033[38;2;255;0;255m"
347	#define TEAL "\033[38;2;0;255;255m"
348	#define PURPLE "\033[38;2;127;0;255m"
349	#define WHITE "\033[38;2;255;255;255m"
350
351	void draw_color (tetromino current_square) {
352	switch (current_square) {
353	case I_PIECE:
354	printf("%s", RED);
355	break;
356	case J_PIECE:
357	printf("%s", GREEN);
358	break;
359	case L_PIECE:
360	printf("%s", BLUE);
361	break;
362	case O_PIECE:
363	printf("%s", YELLOW);
364	break;
365	case S_PIECE:
366	printf("%s", MAGENTA);
367	break;
368	case T_PIECE:
369	printf("%s", TEAL);
370	break;
371	case Z_PIECE:
372	printf("%s", PURPLE);
373	break;
374	}
375	}
376
377
378	void draw_board(piece current_piece, int8_t blink, bool is_piece) {
379
380	uint8_t i, j;
381
382
383	printf("\033[2J\033[H");
384	printf("┏");
385	for (i = 0; i < FIELD_WIDTH; i++)
386	printf("━━");
387	printf("┓\n");
388
389
390	for (i = 0; i < FIELD_HEIGHT; i++) {
391
392	printf("┃");
393
394	for (j = 0; j < FIELD_WIDTH; j++) {
395
396	if (i + TOP_GAP == blink) {
397
398	printf("%s", WHITE);
399	} else {
400
401
402	tetromino current_square = current_square = playfield[i + TOP_GAP][j + BORDER_WIDTH];
403
404	if (is_piece) {
405
406	uint8_t k, l;
407
408	for (k = 0; k < current_piece.size; k++) {
409	for (l = 0; l < current_piece.size; l++) {
410
411	coord points = find_direction(current_piece, l, k);
412
413	if (
414	i == current_piece.y + points.y - TOP_GAP &&
415	j == current_piece.x + points.x - BORDER_WIDTH &&
416	current_piece.piece[k][l])
417	{
418	current_square = current_piece.name;
419	}
420	}
421	}
422	}
423
424	if (current_square <= EMPTY \|\| current_square > Z_PIECE) {
425	printf("· ");
426	continue;
427	}
428
429	draw_color(current_square);
430	}
431
432	printf("██\033[0m");
433	}
434	printf("┃\n");
435	}
436
437	printf("┗");
438	for (i = 0; i < FIELD_WIDTH; i++)
439	printf("━━");
440	printf("┛\n");
441
442	}
443
444
445	piece init_piece(tetromino new_piece) {
446
447	piece current_piece = {};
448
449	current_piece.name = new_piece;
450
451	switch (current_piece.name) {
452	case I_PIECE:
453	current_piece.size = 4;
454
455	current_piece.piece[0][0] = false;
456	current_piece.piece[0][1] = false;
457	current_piece.piece[0][2] = false;
458	current_piece.piece[0][3] = false;
459
460	current_piece.piece[1][0] = true;
461	current_piece.piece[1][1] = true;
462	current_piece.piece[1][2] = true;
463	current_piece.piece[1][3] = true;
464
465	current_piece.piece[2][0] = false;
466	current_piece.piece[2][1] = false;
467	current_piece.piece[2][2] = false;
468	current_piece.piece[2][3] = false;
469
470	current_piece.piece[3][0] = false;
471	current_piece.piece[3][1] = false;
472	current_piece.piece[3][2] = false;
473	current_piece.piece[3][3] = false;
474
475	break;
476
477	case J_PIECE:
478	current_piece.size = 3;
479
480	current_piece.piece[0][0] = true;
481	current_piece.piece[0][1] = false;
482	current_piece.piece[0][2] = false;
483
484	current_piece.piece[1][0] = true;
485	current_piece.piece[1][1] = true;
486	current_piece.piece[1][2] = true;
487
488	current_piece.piece[2][0] = false;
489	current_piece.piece[2][1] = false;
490	current_piece.piece[2][2] = false;
491
492	break;
493
494	case L_PIECE:
495	current_piece.size = 3;
496
497	current_piece.piece[0][0] = false;
498	current_piece.piece[0][1] = false;
499	current_piece.piece[0][2] = true;
500
501	current_piece.piece[1][0] = true;
502	current_piece.piece[1][1] = true;
503	current_piece.piece[1][2] = true;
504
505	current_piece.piece[2][0] = false;
506	current_piece.piece[2][1] = false;
507	current_piece.piece[2][2] = false;
508
509	break;
510
511	case O_PIECE:
512	current_piece.size = 2;
513
514	current_piece.piece[0][0] = true;
515	current_piece.piece[0][1] = true;
516
517	current_piece.piece[1][0] = true;
518	current_piece.piece[1][1] = true;
519
520	break;
521
522	case S_PIECE:
523	current_piece.size = 3;
524
525	current_piece.piece[0][0] = false;
526	current_piece.piece[0][1] = true;
527	current_piece.piece[0][2] = true;
528
529	current_piece.piece[1][0] = true;
530	current_piece.piece[1][1] = true;
531	current_piece.piece[1][2] = false;
532
533	current_piece.piece[2][0] = false;
534	current_piece.piece[2][1] = false;
535	current_piece.piece[2][2] = false;
536
537	break;
538
539	case T_PIECE:
540	current_piece.size = 3;
541
542	current_piece.piece[0][0] = false;
543	current_piece.piece[0][1] = true;
544	current_piece.piece[0][2] = false;
545
546	current_piece.piece[1][0] = true;
547	current_piece.piece[1][1] = true;
548	current_piece.piece[1][2] = true;
549
550	current_piece.piece[2][0] = false;
551	current_piece.piece[2][1] = false;
552	current_piece.piece[2][2] = false;
553
554	break;
555	case Z_PIECE:
556	current_piece.size = 3;
557
558	current_piece.piece[0][0] = true;
559	current_piece.piece[0][1] = true;
560	current_piece.piece[0][2] = false;
561
562	current_piece.piece[1][0] = false;
563	current_piece.piece[1][1] = true;
564	current_piece.piece[1][2] = true;
565
566	current_piece.piece[2][0] = false;
567	current_piece.piece[2][1] = false;
568	current_piece.piece[2][2] = false;
569
570	break;
571	default:
572	perror("Fuck you\n");
573	break;
574	}
575
576	current_piece.x = (FIELD_WIDTH >> 1) - (current_piece.size >> 1) + BORDER_WIDTH;
577	current_piece.y = TOP_GAP;
578	current_piece.rotation = TOP;
579
580	return current_piece;
581	}
582
583	coord find_direction(piece current_piece, uint8_t x, uint8_t y) {
584
585	coord points = {
586	x,
587	y
588	};
589
590	switch (current_piece.rotation) {
591	case TOP:
592	/*
593	x = k;
594	y = j;
595	*/
596	break;
597	case RIGHT:
598	points.x = y;
599	points.y = current_piece.size - (x + 1);
600	break;
601	case BOTTOM:
602	points.x = current_piece.size - (x + 1);
603	points.y = current_piece.size - (y + 1);
604	break;
605	case LEFT:
606	points.x = current_piece.size - (y + 1);
607	points.y = x;
608	break;
609	}
610
611	return points;
612	}