Snake 0.2

Data de publicació: Mar 04, 2017 5:5:40 PM

#include <ncurses.h>

#include <stdio.h>

#include <termios.h>

#include <unistd.h>

#include <fcntl.h>

#include <stdlib.h>

#include <time.h>

#define DELAY         100000

#define MAX_SNAKE        50

#define UP          -1

#define DOWN         1

#define RIGHT        1

#define LEFT        -1

#define ARROW_UP        65

#define ARROW_DOWN    66

#define ARROW_RIGHT    67

#define ARROW_LEFT    68

//Window

WINDOW *finestra;

//Coordenades del box

int min_x, min_y;

int max_x, max_y;

int X_MUGA_min, X_MUGA_max;

int Y_MUGA_min, Y_MUGA_max;

//Coordenades del snake

int x_cap, y_cap;

int x[MAX_SNAKE], y[MAX_SNAKE];

int len_snake;

//Funcions prototips

void init_rand();

void init_ncurses();

void init_snake();

void init_mon();

void end_ncurses();

void print_box(WINDOW *finestra);

void print_snake(WINDOW *finestra);

void delay();

int kbhit(void);

int main(){

int i, key;

int kk=0;

   init_rand();

   init_ncurses();

   init_mon();

   init_snake();

   print_box(finestra);

   key = ARROW_UP;

   while(1){

        delay();

        if (kbhit()) key = getchar();

        x_cap = x[0];

        y_cap = y[0];

        switch( key ) { 

            case ARROW_UP:

                y_cap+=UP;

                break;

            case ARROW_DOWN:

                y_cap+=DOWN;

                break;

            case ARROW_LEFT:

                x_cap+=LEFT;

                break;

            case ARROW_RIGHT:

                x_cap+=RIGHT;

                break;

            default:        

                refresh();

                break;

                }

        //Si xoca contra laterals rebota

        if ( x_cap > X_MUGA_max )    x_cap = X_MUGA_max;

        if ( x_cap < X_MUGA_min )    x_cap = X_MUGA_min;   

        //Si xoca contra dalt o baix rebota

        if ( y_cap > Y_MUGA_max )    y_cap = Y_MUGA_max;    

        if ( y_cap < Y_MUGA_min )    y_cap = Y_MUGA_min;   

        print_box(finestra);

        if (( x_cap > X_MUGA_min ) && ( x_cap < X_MUGA_max ) &&

          ( y_cap > Y_MUGA_min ) && ( y_cap < Y_MUGA_max )

         )   

        print_snake(finestra);

   }

   end_ncurses();

   return 0;

}

void print_snake(WINDOW *finestra){

int i;

    //Dibuixa nou cap  

    mvwaddch(finestra, y_cap, x_cap, ACS_CKBOARD );

    //Esborra cua

    mvwaddch(finestra, y[len_snake - 1], x[len_snake - 1], ' ' );

    //Avança posicions i repinta

    for ( i = len_snake-1 ; i > 0; i-- ){

         x[i] = x[i-1];

         y[i] = y[i-1];

         mvwaddch(finestra, y[i], x[i], ACS_CKBOARD );

    }

    //Actualitza cap

    x[0] = x_cap;

    y[0] = y_cap;

    wrefresh(finestra);

}

void print_box(WINDOW *finestra){

    box(finestra, min_x, min_y);

    wrefresh(finestra);

}

void init_mon(){

    min_x = 0;

    min_y = 0;

    X_MUGA_min = min_x + 1;

    X_MUGA_max = max_x - 1;

    Y_MUGA_min = min_y;

    Y_MUGA_max = max_y - 1;

}

void init_snake(){

    int i;

    len_snake = MAX_SNAKE;

    x[0] = rand()%X_MUGA_max;

    y[0] = rand()%Y_MUGA_max;

    for ( i = 1; i < len_snake; i++ )    {x[i] = x[i-1] + 1; y[i] = y[i-1];}

}

void init_ncurses(){

   initscr();

   getmaxyx(stdscr, max_y, max_x);   clear();

   noecho();

   cbreak();

   curs_set(FALSE); 

   nodelay(finestra, TRUE);

   finestra = newwin(max_y, max_x, min_y, min_x);

   keypad(finestra, TRUE);

   refresh();

}

void init_rand(){

    srand(time(NULL));

}

void end_ncurses(){

   clrtoeol();

   refresh();

   endwin();

}

void delay(){

    usleep(DELAY);

}

int kbhit(void)

{

  struct termios oldt, newt;

  int ch;

  int oldf;

  tcgetattr(STDIN_FILENO, &oldt);

  newt = oldt;

  newt.c_lflag &= ~(ICANON | ECHO);

  tcsetattr(STDIN_FILENO, TCSANOW, &newt);

  oldf = fcntl(STDIN_FILENO, F_GETFL, 0);

  fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);

  ch = getchar();

  tcsetattr(STDIN_FILENO, TCSANOW, &oldt);

  fcntl(STDIN_FILENO, F_SETFL, oldf);

  if(ch != EOF)

  {

    ungetc(ch, stdin);

    return 1;

  }

  return 0;

}