Snake code

snake.c

#include <ncurses.h>
#include <stdio.h>

int xPOS, yPOS;
void usleep(int i);

const char splashScreen[] = 
" .o88b. d8b   db  .d8b.  db   dD d88888b \nd8P  Y8 888o  88 d8' `8b 88 ,8P' 88'     \n8P      88V8o 88 88ooo88 88,8P   88ooooo \n8b      88 V8o88 88~~~88 88`8b   88~~~~~ \nY8b  d8 88  V888 88   88 88 `88. 88.     \n `Y88P' VP   V8P YP   YP YP   YD Y88888P ";
const char prompt[] = "Press any key to start.";

int kbhit(void)    /* comment */
{
   int ch, r;

   // turn off getch() blocking and echo
   nodelay(stdscr, TRUE);
   noecho();

   // check for input
   ch = getch();
   if( ch == ERR)      // no input
   {
      r = FALSE;
   }
   else                // input
   {
      r = TRUE;
      ungetch(ch);
   }

   // restore block and echo
   echo();
   nodelay(stdscr, FALSE);
   return(r);
}

void drawSnakePit()
{
   mvhline(0, 1, ACS_HLINE, COLS-2);//draws top line
   mvhline(1,1,ACS_BLOCK,COLS-2);//Draws # border top
   mvhline(LINES-1,1,ACS_HLINE,COLS-2);//draws bottom line
   mvhline(LINES-2,1,ACS_BLOCK,COLS-2);//Draws # border bottom

   for(int i=1; i<LINES-1;i++)//draws left line
   {
      mvaddch(i,0,ACS_VLINE);
      mvaddch(i,1,ACS_BLOCK); //Draws #border left
   }

   for(int i=1; i<LINES-1;i++)//draws right line
   {
      mvaddch(i,COLS-1,ACS_VLINE);
      mvaddch(i,COLS-2,ACS_BLOCK);//Draws #border right
   }

   mvaddch(0,0,'+');//Draws upperleft corner
   mvaddch(0,COLS-1,'+');//Draws upperRight corner
   mvaddch(LINES-1,0,'+');//Draws lowerLeft corner
   mvaddch(LINES-1,COLS-1,'+');//Draws lowerRight corner
}

void getInput(char input, bool gameRun)
{
   if(input == 'w' || input == 'W')
   {        
      yPOS--;
   }
   else if(input == 's' || input == 'S')
   {
      yPOS++;
   }
   else if(input == 'a' || input == 'A')
   {
      xPOS--;
   }
   else if(input == 'd' || input == 'D')
   {
      xPOS++;
   }
   else if(input == 'q' || input == 'Q')
   {
      gameRun = false;
   }   
}

int main ()
{
   char input;
   _Bool gameRun = true;//used to control main while loop for updating game

   initscr();//starts ncurses
   noecho();//prevents entered text from showing on the terminal screen

   xPOS = COLS/2;//used to start snake in the middle of the window
   yPOS = LINES/2;//

   keypad(stdscr, TRUE);//Allows KeyBoard Input

   mvprintw(0,0,splashScreen);
   mvprintw(7,0,prompt);

   refresh();
   getch();  // start game

   while(gameRun)//loop to make snake keep moving
   { 
      clear(); //Clears the canvas
      drawSnakePit(); //Draws the Snake Pit

      if ( kbhit() )
      {
         //reads char into input var
         input = getch();
      }

      // determines keypress and increments or decrements position values
      getInput(input,gameRun);

      // Draws the head of the snake
      mvprintw( yPOS, xPOS, "X" );

      // Need to add a function to store position of snakehead, probably will
      // have to update it in the getinput() function as well

      // Updates the screen
      refresh();

      // Check if reached edge
      if ( ( xPOS <= 1         )  || \
            ( xPOS >= COLS - 1  )  || \
            ( yPOS <= 1         )  || \
            ( yPOS >= LINES - 1 ) )
      {
         gameRun = false;
      }

      // Sleeps for 300ms
      usleep(300000);
   }

   clear();
   printf("Game over!\n");

   endwin();
   return 0;  
}