Added debug flags

.gitignore

@@ -0,0 +1 @@
+build/

README.md

@@ -17,13 +17,13 @@ Each part of the snake is a node of a dynamically allocated linked list that con
 - A pointer to a order node (more on orders below)
 - A pointer to the next snake part node
 
-An order keeps information on when the direction of the snake part has to change and to which direction it should change. An order is also a node in a dynamically allocated linked list that contains:
+An order keeps information on when a snake part should change to what direction. An order is also a node in a dynamically allocated linked list that contains:
 - The direction that this order eventually tells the snake part to go to
 - The delay i.e. how many ticks until the snake part has to change direction.
 - A pointer to the next order
 
 ## Info
-Only tested and designed to work with the combination of
+Only tested with the combination of
 - GCC
 - Linux
 - x86 CPU

compile.sh

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

compile_release.sh

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

src/board/board.c

@@ -1,7 +1,6 @@
 #include <stdio.h>
-#include "../globals.h"
 
-extern boardInfo brdInfo;
+#include "board.h"
 
 void setBoardBorders(char board[][brdInfo.x]) {
   for (int i = 0; i < brdInfo.y; i++) {

src/board/board.h

@@ -1,7 +1,17 @@
 #ifndef BOARD_H_
 #define BOARD_H_
 
-#include "../globals.h"
+typedef struct {
+  int x;
+  int y;
+} boardInfo;
+
+typedef struct {
+  int xs;
+  int xe;
+  int ys;
+  int ye;
+} playableBoardInfo;
 
 extern boardInfo brdInfo;
 

src/globals.h

@@ -1,16 +0,0 @@
-#ifndef GLOBALS_H_
-#define GLOBALS_H_
-
-typedef struct {
-  int x;
-  int y;
-} boardInfo;
-
-typedef struct {
-  int xs;
-  int xe;
-  int ys;
-  int ye;
-} playableBoardInfo;
-
-#endif  // GLOBALS_H_

src/main.c

@@ -6,29 +6,36 @@
 #include <string.h>
 #include <time.h>
 #include <stdbool.h>
+
 #include "./utils/utils.h"
 #include "./snake/snake.h"
 #include "./board/board.h"
-#include "globals.h"
+
+const char* VERSION = "1.1.9";
 
 const char SNAKE_VIS = '#';
 
 boardInfo brdInfo;
 playableBoardInfo plBrdInfo;
 
-int main() {
+void cmd_args(int argc, char** argv);
+void emptyStdinBuffer();
+void getIntOrMinusOne(int* dst);
+
+int main(int argc, char** argv) {
+  cmd_args(argc, argv);
+
   const clock_t initClock = clock();
 
   // Board Constraints
-  printf("Set board size (15 - 60): ");
-  scanf("%d", &brdInfo.y);
-  if (!(brdInfo.y >= 15 && brdInfo.y <= 60)) {
-    printf("Invalid input. Board size must be greater than 0.\n");
-    exit(0);
+  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);
+  /*printf("brdInfo.x: %d\n", brdInfo.x);*/
+  /*printf("brdInfo.y: %d\n", brdInfo.y);*/
   char board[brdInfo.y][brdInfo.x];
 
   plBrdInfo.xs = 1;
@@ -37,6 +44,15 @@ int main() {
   plBrdInfo.ye = brdInfo.y - 2;
 
 
+  // Set gamespeed
+  int gameSpeed = 0;
+  printf("Enter gamespeed (default: 0, max: 180): ");
+  getIntOrMinusOne(&gameSpeed);
+  if (gameSpeed == -1 || gameSpeed > 180) {
+    gameSpeed = 0;
+  }
+
+
   // Termios setup
   struct termios attr;
 
@@ -54,16 +70,21 @@ int main() {
   setBoardBorders(board);
 
   int points = 0;
-  int gameSpeed = 0;
   const int sleepInterval = 200;
 
   // Snake head setup
-  snakePart* snakeHead = (snakePart*) malloc(sizeof(snakePart));
+  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 = (order*) malloc(sizeof(order));
+  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;
@@ -95,8 +116,16 @@ int main() {
     if (snakeHead->x == food.x
         && snakeHead->y == food.y) {
       points++;
-      if (points % 5 == 0)
-        gameSpeed += 15;
+      if (gameSpeed >= 100) {
+        gameSpeed += 5;
+      } else {
+        gameSpeed += 10;
+      }
+
+      if (gameSpeed >= 180) {
+        gameSpeed = 180;
+      }
+
       do {
         food.x = randomX(initClock);
         food.y = randomY(initClock);
@@ -160,3 +189,45 @@ game_over:
 
   return 0;
 }
+
+void cmd_args(int argc, char** argv) {
+  if (argc == 1) {
+    return;
+  }
+
+  if (
+      strcmp(argv[1], "--version") == 0
+      || strcmp(argv[1], "-v") == 0
+      )
+  {
+    printf("Sanke version %s\n", VERSION);
+    exit(0);
+  }
+}
+
+void emptyStdinBuffer() {
+  char ch;
+  while ((ch = getchar()) != '\n');
+}
+
+void getIntOrMinusOne(int* dst) {
+  char iBuf[100];
+  char num[100];
+  int i = 0;
+
+  fgets(iBuf, 100, stdin);
+
+  while (!isdigit(iBuf[i])) {
+    if (iBuf[i] == '\0') {
+      *dst = -1;
+      return;
+    }
+    i++;
+  }
+
+  for (int j = 0; i < strlen(iBuf); i++, j++) {
+    num[j] = iBuf[i];
+  }
+
+  *dst = atoi(num);
+}

src/snake/snake.c

@@ -1,8 +1,10 @@
 #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;
@@ -74,11 +76,18 @@ void addSnakePart(char board[][brdInfo.x], snakePart* head) {
   while (tail->next != NULL)
     tail = tail->next;
 
-  snakePart* newTail = (snakePart*) malloc(sizeof(snakePart));
+  snakePart* newTail = malloc(sizeof(snakePart));
+  if (!newTail) {
+    mallocError("newTail", "snake.c", "addSnakePart()");
+  }
+
   newTail->visChar = SNAKE_VIS;
   newTail->dir = tail->dir;
   // Order head
-  newTail->order = (order*) malloc(sizeof(order));
+  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
@@ -137,7 +146,10 @@ void pushOrder(order* head, char dir, int delay) {
   while (current->next != NULL)
     current = current->next;
 
-  order* newOrder = (order*) malloc(sizeof(order));
+  order* newOrder = malloc(sizeof(order));
+  if (!newOrder) {
+    mallocError("newOrder", "snake.c", "pushOrder()");
+  }
   newOrder->dir = dir;
   newOrder->delay = delay;
   newOrder->next = NULL;
@@ -179,7 +191,10 @@ void copyOrders(order* srcHead, order* destHead) {
   while (srcCurrent->next != NULL) {
     srcCurrent = srcCurrent->next;
     destPrev = destCurrent;
-    destCurrent = (order*) malloc(sizeof(order));
+    destCurrent = malloc(sizeof(order));
+    if (!destCurrent) {
+      mallocError("destCurrent", "snake.c", "copyOrders()");
+    }
     destPrev->next = destCurrent;
     destCurrent->dir = srcCurrent->dir;
     destCurrent->delay = srcCurrent->delay + 1;

src/snake/snake.h

@@ -1,7 +1,7 @@
 #ifndef SNAKE_H_
 #define SNAKE_H_
 
-#include "../globals.h"
+#include "../board/board.h"
 
 extern boardInfo brdInfo;
 

src/utils/utils.c

@@ -1,7 +1,8 @@
-#include <stdio.h>
 #include <time.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <unistd.h>
+
 #include "utils.h"
 
 extern boardInfo brdInfo;
@@ -39,29 +40,7 @@ void sleep_ms(const int ms) {
   usleep(ms * 1000);
 }
 
-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");
-  }
+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);
 }

src/utils/utils.h

@@ -2,7 +2,8 @@
 #define UTILS_H_
 
 #include <time.h>
-#include "../globals.h"
+
+#include "../board/board.h"
 
 extern boardInfo brdInfo;
 
@@ -10,7 +11,6 @@ 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 setBoardBorders(char board[][brdInfo.x]);
-void printBoard(char board[][brdInfo.x]);
+void mallocError(const char* varName, const char* fileName, const char* functionName);
 
 #endif  // UTILS_H_