started rework

.gitignore

@@ -1 +1,2 @@
 build/
+.clangd

compile.sh

@@ -1,3 +1,22 @@
-#!/bin/bash
+#!/bin/sh
 
-gcc -Og -g -Wall -Werror -pedantic -o build/sanke src/main.c src/snake/**.c src/utils/**.c src/board/**.c
+src="src/*.c"
+flags="-std=c23 -ggdb -Og -Wall -Wextra -Werror -Wpedantic -pedantic-errors"
+includes="-I src/headers"
+
+cmd="gcc $flags $includes $src -o target/sanke"
+
+echo $cmd
+$cmd
+
+if [ $? -gt 0 ]; then
+  exit
+fi
+
+echo 
+
+if [ -v 1 ]; then
+  if [ $1 = "run" ]; then
+    ./target/sanke
+  fi
+fi

compile_release.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-
-gcc -Wall -Werror -pedantic -O3 -o build/sanke src/main.c src/snake/**.c src/utils/**.c src/board/**.c;

src/board.c

@@ -0,0 +1,97 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+
+#include "board.h"
+#include "snake.h"
+
+#define MAT_INDEX(mat, w, i, j) (mat)[(j) + (w) * (i)]
+
+Board board_alloc(const int width, const int height) {
+  Board board = {};
+  board.width = width * 2;
+  board.height = height;
+
+  board.width_with_borders = board.width + 2;
+  board.height_with_borders = board.height + 2;
+  board.squares = (char*) malloc(sizeof(char) * board.width_with_borders * board.height_with_borders);
+
+  for (size_t i = 1; i < board.height_with_borders; i++) {
+    for (size_t j = 1; j < board.width_with_borders; j++) {
+      MAT_INDEX(board.squares, board.width_with_borders, i, j) = ' ';
+    }
+  }
+
+  // Create border pattern
+  const int width_with_borders_last_i = board.width_with_borders - 1;
+  const int height_with_borders_last_i = board.height_with_borders - 1;
+  // Vertical bars
+  for (int i = 1; i < height_with_borders_last_i; i++) {
+    MAT_INDEX(board.squares, board.width_with_borders, i, 0) = '|';
+    MAT_INDEX(board.squares, board.width_with_borders, i, width_with_borders_last_i) = '|';
+  }
+  // Horizontal lines
+  for (int j = 1; j < width_with_borders_last_i; j++) {
+    MAT_INDEX(board.squares, board.width_with_borders, 0, j) = '-';
+    MAT_INDEX(board.squares, board.width_with_borders, height_with_borders_last_i, j) = '-';
+  }
+
+  // Corners
+  MAT_INDEX(board.squares, board.width_with_borders, 0, 0) = '+';
+  MAT_INDEX(board.squares, board.width_with_borders, height_with_borders_last_i, 0) = '+';
+  MAT_INDEX(board.squares, board.width_with_borders, 0, width_with_borders_last_i) = '+';
+  MAT_INDEX(board.squares, board.width_with_borders, height_with_borders_last_i, width_with_borders_last_i) = '+';
+
+  return board;
+}
+
+void board_free(Board* board) {
+  free(board->squares);
+}
+
+bool board_coords_out_of_bounds(Board* board, const size_t x, const size_t y) {
+  return x >= board->width_with_borders || y >= board->height_with_borders;
+}
+
+void board_set_square(
+    Board* board,
+    int x,
+    int y,
+    const char ch
+    )
+{
+  x++;
+  y++;
+  if (board_coords_out_of_bounds(board, x, y)) {
+    fprintf(stderr, "ERROR: Board coords out of bounds: x: %d y: %d\n", x, y);
+    exit(EXIT_FAILURE);
+  }
+  // assert(board_coords_out_of_bounds(board, x, y));
+  MAT_INDEX(board->squares, board->width_with_borders, y, x) = ch;
+}
+
+void board_clear(Board* board) {
+  for (size_t i = 0; i < board->height; i++) {
+    for (size_t j = 0; j < board->width; j++) {
+      printf("Clearing board: i: %zu j: %zu\n", i, j);
+      board_set_square(board, j, i, ' ');
+    }
+  }
+}
+
+void board_draw_snake(Board* board, Snake* snake) {
+  SnakePart part = {};
+  for (size_t i = 0; i < snake->length; i++) {
+    part = snake_get_part(snake, i);
+    board_set_square(board, part.y, part.x, part.vis_char);
+  }
+}
+
+void print_board(Board* board) {
+  for (size_t i = 0; i < board->height_with_borders; i++) {
+    for (size_t j = 0; j < board->width_with_borders; j++) {
+      printf("%c", MAT_INDEX(board->squares, board->width_with_borders, i, j));
+    }
+    printf("\n");
+  }
+}

src/board/board.c

@@ -1,30 +0,0 @@
-#include <stdio.h>
-
-#include "board.h"
-
-void setBoardBorders(char board[][brdInfo.x]) {
-  for (int i = 0; i < brdInfo.y; i++) {
-    for (int j = 0; j < brdInfo.x; j++) {
-      if (i == 0 || i == brdInfo.y - 1)
-        board[i][j] = '-';
-      else if (j == 0 || j == brdInfo.x - 1)
-        board[i][j] = '|';
-      else
-        board[i][j] = ' ';
-    }
-  }
-
-  board[0][0] = '+';
-  board[brdInfo.y - 1][0] = '+';
-  board[0][brdInfo.x - 1] = '+';
-  board[brdInfo.y - 1][brdInfo.x - 1] = '+';
-}
-
-void printBoard(char board[][brdInfo.x]) {
-  for (int i = 0; i < brdInfo.y; i++) {
-    for (int j = 0; j < brdInfo.x; j++) {
-      printf("%c", board[i][j]);
-    }
-    printf("\n");
-  }
-}

src/board/board.h

@@ -1,21 +0,0 @@
-#ifndef BOARD_H_
-#define BOARD_H_
-
-typedef struct {
-  int x;
-  int y;
-} boardInfo;
-
-typedef struct {
-  int xs;
-  int xe;
-  int ys;
-  int ye;
-} playableBoardInfo;
-
-extern boardInfo brdInfo;
-
-void setBoardBorders(char board[][brdInfo.x]);
-void printBoard(char board[][brdInfo.x]);
-
-#endif

src/headers/board.h

@@ -0,0 +1,30 @@
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#include "snake.h"
+
+typedef struct {
+  size_t width;
+  size_t height;
+  size_t width_with_borders;
+  size_t height_with_borders;
+  char* squares;
+} Board;
+
+Board board_alloc(
+    const int width,
+    const int height
+    );
+void board_free(Board* board);
+bool board_coords_out_of_bounds(Board* board, const size_t x, const size_t y);
+void board_set_square(
+    Board* board,
+    const int x,
+    const int y,
+    const char ch
+    );
+void board_clear(Board* board);
+void board_draw_snake(Board* board, Snake* snake);
+void print_board(Board* board);
+
+#endif

src/headers/snake.h

@@ -0,0 +1,29 @@
+#ifndef SNAKE_H_
+#define SNAKE_H_
+
+#include <stddef.h>
+
+typedef struct {
+  int x;
+  int y;
+  char vis_char;
+} SnakePart;
+
+typedef struct {
+  SnakePart* parts;
+  size_t max_length;
+  size_t length;
+  char dir;
+} Snake;
+
+SnakePart snake_get_part(const Snake* snake, const size_t index);
+Snake snake_alloc(
+    const int board_square_count,
+    const int init_x,
+    const int init_y,
+    const char init_dir
+    );
+void snake_free(Snake* snake);
+void snake_move(Snake* snake);
+
+#endif // SNAKE_H_

src/headers/utils.h

@@ -1,16 +1,8 @@
 #ifndef UTILS_H_
 #define UTILS_H_
 
-#include <time.h>
-
-#include "../board/board.h"
-
-extern boardInfo brdInfo;
-
 int randomInt(const int start, const int end, const unsigned int seed);
-int randomX(const clock_t initClock);
-int randomY(const clock_t initClock);
-void sleep_ms(const int ms);
 void mallocError(const char* varName, const char* fileName, const char* functionName);
+void sleep_ms(const unsigned int ms);
 
 #endif  // UTILS_H_

src/main.c

@@ -5,187 +5,56 @@
 #include <ctype.h>
 #include <string.h>
 #include <time.h>
-#include <stdbool.h>
 
-#include "./utils/utils.h"
+#include "board.h"
-#include "./snake/snake.h"
+#include "snake.h"
-#include "./board/board.h"
+#include "utils.h"
 
 const char* VERSION = "1.1.9";
 
 const char SNAKE_VIS = '#';
 
-boardInfo brdInfo;
-playableBoardInfo plBrdInfo;
-
 void cmd_args(int argc, char** argv);
-void emptyStdinBuffer();
+void empty_stdin_buffer();
-void getIntOrMinusOne(int* dst);
+void get_int_or_minus_one(int* dst);
+struct termios set_termios();
 
-int main(int argc, char** argv) {
+int main() {
-  cmd_args(argc, argv);
+  // cmd_args(argc, argv);
-
-  const clock_t initClock = clock();
-
-  // Board Constraints
-  printf("Set board size (15 - 60, default: 15): ");
-  getIntOrMinusOne(&brdInfo.y);
-  if (!(brdInfo.y >= 15 && brdInfo.y <= 60) || brdInfo.y == -1) {
-    brdInfo.y = 15;
-  }
-  brdInfo.x = brdInfo.y * 2;
-  /*printf("brdInfo.x: %d\n", brdInfo.x);*/
-  /*printf("brdInfo.y: %d\n", brdInfo.y);*/
-  char board[brdInfo.y][brdInfo.x];
-
-  plBrdInfo.xs = 1;
-  plBrdInfo.xe = brdInfo.x - 2;
-  plBrdInfo.ys = 1;
-  plBrdInfo.ye = brdInfo.y - 2;
 
+  // const clock_t initClock = clock();
 
   // Set gamespeed
-  int gameSpeed = 0;
+  // int gameSpeed = 0;
-  printf("Enter gamespeed (default: 0, max: 180): ");
+  // printf("Enter gamespeed (default: 0, max: 180): ");
-  getIntOrMinusOne(&gameSpeed);
+  // getIntOrMinusOne(&gameSpeed);
-  if (gameSpeed == -1 || gameSpeed > 180) {
+  // if (gameSpeed == -1 || gameSpeed > 180) {
-    gameSpeed = 0;
+  //   gameSpeed = 0;
-  }
+  // }
 
 
   // Termios setup
-  struct termios attr;
+  const struct termios attr_orig = set_termios();
 
-  tcgetattr(STDIN_FILENO, &attr);
+  // Game model init
-
+  const int board_w = 15;
-  const struct termios ATTR_ORIG = attr;
+  const int board_h = 15;
-
+  Board board = board_alloc(board_w, board_h);
-  attr.c_lflag &= ~(ECHO | ICANON);
+  Snake snake = snake_alloc(board_w * board_h, 0, 0, 'd');
-  attr.c_cc[VMIN] = 0;
-  attr.c_cc[VTIME] = 0;
-
-  tcsetattr(STDIN_FILENO, 0, &attr);
-
-  // Game board setup
-  setBoardBorders(board);
-
-  int points = 0;
-  const int sleepInterval = 200;
-
-  // Snake head setup
-  snakePart* snakeHead = malloc(sizeof(snakePart));
-  if (!snakeHead) {
-    mallocError("snakeHead", "main.c", "main()");
-  }
-  snakeHead->x = randomX(initClock);
-  snakeHead->y = randomY(initClock);
-  snakeHead->visChar = '&';
-  snakeHead->dir = 'w';
-  snakeHead->order = malloc(sizeof(order));
-  if (!snakeHead->order) {
-    mallocError("snakeHead->order", "main.c", "main()");
-  }
-  snakeHead->order->dir = snakeHead->dir;
-  snakeHead->order->delay = -1;
-  snakeHead->order->next = NULL;
-  snakeHead->next = NULL;
-
-  board[snakeHead->y][snakeHead->x] = snakeHead->visChar;
-
-  // Food setup
-  struct {
-    int x;
-    int y;
-    char visChar;
-  } food;
-  food.x = randomX(initClock);
-  food.y = randomY(initClock);
-  food.visChar = '$';
-
-  board[food.y][food.x] = food.visChar;
 
   // Screen init
   system("clear");
 
-  // Game loop
+  while (true) {
-  while (1) {
-    fflush(stdout);
-    char buf[1] = {0};
-
-    // Food collision
-    if (snakeHead->x == food.x
-        && snakeHead->y == food.y) {
-      points++;
-      if (gameSpeed >= 100) {
-        gameSpeed += 5;
-      } else {
-        gameSpeed += 10;
-      }
-
-      if (gameSpeed >= 180) {
-        gameSpeed = 180;
-      }
-
-      do {
-        food.x = randomX(initClock);
-        food.y = randomY(initClock);
-      } while (checkCollision(snakeHead, food.x, food.y));
-      addSnakePart(board, snakeHead);
-    }
-
-    // Input handling
-    if (read(STDIN_FILENO, buf, 1) != 0 && isalpha(buf[0])) {
-      char input = buf[0];
-      input = tolower(input);
-
-      if (
-          (input == 'w' && snakeHead->dir != 's')
-          || (input == 's' && snakeHead->dir != 'w')
-          || (input == 'a' && snakeHead->dir != 'd')
-          || (input == 'd' && snakeHead->dir != 'a')
-          ) {
-        snakeHead->dir = input;
-        addOrders(snakeHead, input);
-      }
-    }
-
-    // Update board
-    board[food.y][food.x] = food.visChar;
-    mvSnakeParts(board, snakeHead);
-
-    // Snake collision
-    if (snakeHead->next != NULL) {
-      snakePart* current = snakeHead->next;
-      while (1) {
-        if (current->x == snakeHead->x
-            && current->y == snakeHead->y)
-          goto game_over;
-
-        if (current->next == NULL)
-          break;
-
-        current = current->next;
-      }
-    }
-
     system("clear");
-    printBoard(board);
+    snake_move(&snake);   
-    printf("Points: %d\n", points);
+    board_clear(&board);
-    printf("Game Speed: %d\n", gameSpeed);
+    board_draw_snake(&board, &snake);
-
+    print_board(&board);
-    sleep_ms(sleepInterval - gameSpeed);
+    sleep_ms(1000);
   }
 
-game_over:
+  tcsetattr(STDIN_FILENO, 0, &attr_orig);
-
-  // Game over
-  system("clear");
-
-  printBoard(board);
-  printf("Final Points: %d\n", points);
-  printf("Final Game Speed: %d\n", gameSpeed);
-
-  tcsetattr(STDIN_FILENO, 0, &ATTR_ORIG);
 
   return 0;
 }
@@ -205,15 +74,15 @@ void cmd_args(int argc, char** argv) {
   }
 }
 
-void emptyStdinBuffer() {
+void empty_stdin_buffer() {
   char ch;
   while ((ch = getchar()) != '\n');
 }
 
-void getIntOrMinusOne(int* dst) {
+void get_int_or_minus_one(int* dst) {
   char iBuf[100];
   char num[100];
-  int i = 0;
+  size_t i = 0;
 
   fgets(iBuf, 100, stdin);
 
@@ -231,3 +100,19 @@ void getIntOrMinusOne(int* dst) {
 
   *dst = atoi(num);
 }
+
+struct termios set_termios() {
+  struct termios attr;
+
+  tcgetattr(STDIN_FILENO, &attr);
+
+  const struct termios attr_orig = attr;
+
+  attr.c_lflag &= ~(ECHO | ICANON);
+  attr.c_cc[VMIN] = 0;
+  attr.c_cc[VTIME] = 0;
+
+  tcsetattr(STDIN_FILENO, 0, &attr);
+
+  return attr_orig;
+}

src/snake.c

@@ -0,0 +1,83 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+
+#include "snake.h"
+
+static SnakePart* snake_get_part_ptr(const Snake* snake, const size_t index) {
+  if (index >= snake->max_length) {
+    return NULL;
+  }
+
+  return snake->parts + index;
+}
+
+SnakePart snake_get_part(const Snake* snake, const size_t index) {
+  assert(index < snake->max_length);
+  return snake->parts[index];
+}
+
+Snake snake_alloc(
+    const int board_square_count,
+    const int init_x,
+    const int init_y,
+    const char init_dir
+    )
+{
+  Snake snake = {0};
+  snake.max_length = board_square_count;
+  snake.length = 1;
+  snake.dir = init_dir;
+  snake.parts = (SnakePart*) malloc(sizeof(SnakePart) * snake.max_length);
+  snake.parts[0] = (SnakePart) { .x = init_x, .y = init_y, .vis_char = '&' };
+
+  return snake;
+}
+
+void snake_free(Snake* snake) {
+  free(snake->parts);
+}
+
+void snake_move(Snake* snake) {
+  SnakePart* first_part = snake_get_part_ptr(snake, 0);
+  int first_part_old_x = first_part->x;
+  int first_part_old_y = first_part->y;
+
+  // Move first part
+  switch (snake->dir) {
+    case 'w':
+      first_part->y -= 1;
+      break;
+    case 'a':
+      first_part->x -= 1;
+      break;
+    case 's':
+      first_part->y += 1;
+      break;
+    case 'd':
+      first_part->x += 1;
+      break;
+    default:
+      fprintf(stderr, "ERROR: Invalid direction in snake_move: %c.\n", snake->dir);
+      exit(EXIT_FAILURE);
+  }
+
+  // Stop here if there is only one part
+  SnakePart* last_part = snake_get_part_ptr(snake, snake->length - 1);
+  if (last_part == first_part) {
+    return;
+  }
+
+  // Move all other parts except for the second one, gets skipped if there are only 2 parts
+  SnakePart* second_part = first_part + 1;
+  SnakePart* prev_part = 0;
+  for (SnakePart* part = last_part; part != second_part; part--) {
+    prev_part = part - 1;
+    part->x = prev_part->x;
+    part->y = prev_part->y;
+  }
+
+  // Move second part
+  second_part->x = first_part_old_x;
+  second_part->y = first_part_old_y;
+}

src/snake/snake.c

@@ -1,218 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-
-#include "snake.h"
-#include "../board/board.h"
-#include "../utils/utils.h"
-
-extern char SNAKE_VIS;
-extern boardInfo brdInfo;
-extern playableBoardInfo plBrdInfo;
-
-void mvSnakeParts(char board[][brdInfo.x], snakePart* head) { 
-  snakePart* part = head;
-  while (1) {
-
-    order* orderHead = part->order;
-
-    if (orderHead->next != NULL) {
-      if (orderHead->next->delay == 0) {
-        part->dir = orderHead->next->dir;
-        removeOrder(orderHead);
-      }
-    }
-
-    if (orderHead->next != NULL) {
-      order* current = orderHead->next;
-      while (1) {
-        if (current->delay > 0)
-          current->delay--;
-        if (current->next == NULL)
-          break;
-        current = current->next;
-      }
-    }
-
-    int x = part->x;
-    int y = part->y;
-
-    board[y][x] = ' ';
-
-    switch (part->dir) {
-      case 'w':
-        y = y - 1 < plBrdInfo.ys ? plBrdInfo.ye : y - 1;
-        break;
-      case 's':
-        y = y + 1 > plBrdInfo.ye ? plBrdInfo.ys : y + 1;
-        break;
-      case 'a':
-        x = x - 2 < plBrdInfo.xs ? plBrdInfo.xe - 1 : x - 2;
-        break;
-      case 'd':
-        x = x + 2 > plBrdInfo.xe ? plBrdInfo.xs : x + 2;
-        break;
-      default:
-        printf("ERROR in func mvSnakeParts\n");
-        printf("dir: %c\n", part->dir);
-        exit(1);
-    }
-
-    part->x = x;
-    part->y = y;
-
-    board[y][x] = part->visChar;
-
-    if (part->next == NULL)
-      return;
-
-    part = part->next;
-  }
-}
-
-void addSnakePart(char board[][brdInfo.x], snakePart* head) {
-  snakePart* tail = head;
-
-  while (tail->next != NULL)
-    tail = tail->next;
-
-  snakePart* newTail = malloc(sizeof(snakePart));
-  if (!newTail) {
-    mallocError("newTail", "snake.c", "addSnakePart()");
-  }
-
-  newTail->visChar = SNAKE_VIS;
-  newTail->dir = tail->dir;
-  // Order head
-  newTail->order = malloc(sizeof(order));
-  if (!newTail->order) {
-    mallocError("newTail", "snake.c", "addSnakePart()");
-  }
-  newTail->order->dir = newTail->dir;
-  newTail->order->delay = -1;
-  // First order if exists
-  if (tail->order->next != NULL)
-    copyOrders(tail->order, newTail->order);
-
-
-  switch (newTail->dir) {
-    case 'w':
-      newTail->x = tail->x;
-      newTail->y = tail->y + 1;
-      break;
-    case 's':
-      newTail->x = tail->x;
-      newTail->y = tail->y - 1;
-      break;
-    case 'a':
-      newTail->x = tail->x + 2;
-      newTail->y = tail->y;
-      break;
-    case 'd':
-      newTail->x = tail->x - 2;
-      newTail->y = tail->y;
-      break;
-    default:
-      printf("Invalid direction in func addSnakePart\n");
-      exit(1);
-  }
-
-  /*
-    Untested fix to a bug where the new part
-    would replace a part of the board border.
-  */
-  if (newTail->x > plBrdInfo.xe) {
-    newTail->x = plBrdInfo.xs;
-  } else if (newTail->x < plBrdInfo.xs) {
-    newTail->x = plBrdInfo.xe;
-  }
-
-  if (newTail->y > plBrdInfo.ye) {
-    newTail->y = plBrdInfo.ys;
-  } else if (newTail->y < plBrdInfo.ys) {
-    newTail->y = plBrdInfo.ye;
-  }
-  // bugfix end
-
-  newTail->next = NULL;
-
-  tail->next = newTail;
-
-  board[newTail->y][newTail->x] = newTail->visChar;
-}
-
-void pushOrder(order* head, char dir, int delay) {
-  order* current = head;
-  while (current->next != NULL)
-    current = current->next;
-
-  order* newOrder = malloc(sizeof(order));
-  if (!newOrder) {
-    mallocError("newOrder", "snake.c", "pushOrder()");
-  }
-  newOrder->dir = dir;
-  newOrder->delay = delay;
-  newOrder->next = NULL;
-
-  current->next = newOrder;
-}
-
-void removeOrder(order* head) {
-  order* newFirstOrder = head->next->next;
-  free(head->next);
-  head->next = newFirstOrder;
-}
-
-void addOrders(snakePart* head, char dir) {
-  snakePart* current = head;
-  int i = 1;
-  while (1) {
-    if (current->next == NULL)
-      break;
-
-    current = current->next;
-
-    pushOrder(current->order, dir, i);
-
-    i++;
-  }
-}
-
-void copyOrders(order* srcHead, order* destHead) {
-  if (srcHead->next == NULL) {
-    printf("ERROR in copyOrders: no orders to copy\n");
-    exit(1);
-  }
-
-  order* srcCurrent = srcHead;
-  order* destCurrent = destHead;
-  order* destPrev = destHead;
-
-  while (srcCurrent->next != NULL) {
-    srcCurrent = srcCurrent->next;
-    destPrev = destCurrent;
-    destCurrent = malloc(sizeof(order));
-    if (!destCurrent) {
-      mallocError("destCurrent", "snake.c", "copyOrders()");
-    }
-    destPrev->next = destCurrent;
-    destCurrent->dir = srcCurrent->dir;
-    destCurrent->delay = srcCurrent->delay + 1;
-    destCurrent->next = NULL;
-  }
-}
-
-bool checkCollision(snakePart* head, int x, int y) {
-  snakePart* current = head;
-  while (1) {
-    if (current->x == x && current->y == y)
-      return true;
-
-    if (current->next == NULL)
-      break;
-
-    current = current->next;
-  }
-
-  return false;
-}

src/snake/snake.h

@@ -1,32 +0,0 @@
-#ifndef SNAKE_H_
-#define SNAKE_H_
-
-#include "../board/board.h"
-
-extern boardInfo brdInfo;
-
-typedef struct orderNode {
-  char dir;
-  int delay;
-  struct orderNode* next;
-} order;
-
-typedef struct snakeNode {
-  int x;
-  int y;
-  char visChar;
-
-  char dir;
-  order* order;
-  struct snakeNode* next;
-} snakePart;
-
-void mvSnakeParts(char board[][brdInfo.x], snakePart* head);
-void addSnakePart(char board[][brdInfo.x], snakePart* head);
-void pushOrder(order* head, char dir, int delay);
-void removeOrder(order* head);
-void addOrders(snakePart* head, char dir);
-void copyOrders(order* srcHead, order* destHead);
-bool checkCollision(snakePart* head, int x, int y);
-
-#endif  // SNAKE_H_

src/term.c

@@ -0,0 +1,2 @@
+#include <termios.h>
+

src/utils.c

@@ -1,13 +1,11 @@
-#include <time.h>
+#define _POSIX_C_SOURCE 199309L
+
 #include <stdlib.h>
 #include <stdio.h>
-#include <unistd.h>
+#include <time.h>
 
 #include "utils.h"
 
-extern boardInfo brdInfo;
-extern playableBoardInfo plBrdInfo;
-
 int randomInt(const int start, const int end, const unsigned int seed) {
   /*
    * Gets random int from range
@@ -19,28 +17,11 @@ int randomInt(const int start, const int end, const unsigned int seed) {
   return result;
 }
 
-int randomX(const clock_t initClock) {
-  int x;
-  const unsigned int seed = clock() - initClock;
-  for (int i = randomInt(0, 100, seed); ; i++) {
-    x = randomInt(plBrdInfo.xs, plBrdInfo.xe, i);
-    if (x % 2 != 0)
-      break;
-  }
-
-  return x;
-}
-
-int randomY(const clock_t initClock) {
-  const unsigned int seed = clock() - initClock;
-  return randomInt(plBrdInfo.ys, plBrdInfo.ye, seed);
-}
-
-void sleep_ms(const int ms) {
-  usleep(ms * 1000);
-}
-
 void mallocError(const char* varName, const char* fileName, const char* functionName) {
   printf("Ran out of memory to allocate to %s in %s/%s\n", varName, fileName, functionName);
   exit(1);
 }
+
+void sleep_ms(const unsigned int ms) {
+  nanosleep(&(struct timespec){ .tv_sec = 0, .tv_nsec = ms * 1000000}, NULL);
+}