C++ clear_keybuf函数代码示例

void gController_keyboard_thread(void *data)
{
	int key_pressed;

	clear_keybuf();

	while((key_pressed = readkey())) {

		key_pressed = key_pressed >> 8;

		switch(key_pressed) {
			/* Movement event. */
			case KEY_UP:
			case KEY_RIGHT:
			case KEY_DOWN:
			case KEY_LEFT:
				gController_keyboard_move(key_pressed);
			break;

			case KEY_ESC:
				gController_keyboard_misc(key_pressed);
			break;

			default:
				error("No action registered to this key. Key %d", (key_pressed));
			break;
		}

		clear_keybuf();
		usleep(GCONTROLLER_KB_ACTION_INTERVAL_IN_USEC);
	}
}

/* let the user input a list of path nodes */
void input_nodes(void)
{
   clear_to_color(screen, makecol(255, 255, 255));

   textout_centre_ex(screen, font, "Click the left mouse button to add path "
		     "nodes", SCREEN_W/2, 8, palette_color[255],
		     palette_color[0]);
   textout_centre_ex(screen, font, "Right mouse button or any key to finish",
		     SCREEN_W/2, 24, palette_color[255], palette_color[0]);

   node_count = 1;

   show_mouse(screen);

   do {
      poll_mouse();
   } while (mouse_b);

   clear_keybuf();

   for (;;) {
      poll_mouse();

      if (mouse_b & 1) {
	 if (node_count < MAX_NODES-1) {
	    nodes[node_count].x = mouse_x;
	    nodes[node_count].y = mouse_y;

	    show_mouse(NULL);
	    draw_node(node_count);
	    show_mouse(screen);

	    node_count++;
	 }

	 do {
	    poll_mouse();
	 } while (mouse_b & 1);
      }

      if ((mouse_b & 2) || (keypressed())) {
	 if (node_count < 3)
	    alert("You must enter at least two nodes",
		  NULL, NULL, "OK", NULL, 13, 0);
	 else
	    break;
      }
   }

   show_mouse(NULL);

   do {
      poll_mouse();
   } while (mouse_b);

   clear_keybuf();
}

/*
There was going to be a nice fadeout effect using the allegro fade_out and
fade_in functions, but for some reason these screwed up the palette. Oh well.
*/
void end_game(int fade_speed)
{

// fade_out(fade_speed);


 rest(1000 / fade_speed);
 clear_keybuf();

 clear_bitmap(screen);
// set_palette(palet);
 init_palette();
 set_palette(palet);

 int challenge_winner = 0;

 if (arena[0].teams == 0)
  challenge_winner = score_table();
   else
    challenge_winner = score_table_team();

 if (arena[0].challenge_level != 0)
 {
  if (challenge_winner == 0)
  {
   switch(arena[0].challenge_level)
   {
    case 1: information_box("", "Norbert won?", "Hmm.", 0); break;
    case 2: information_box("", "Looks like you need some more practice.", "", 0); break;
    case 3: information_box("", "Sorry, you lose.", "", 0); break;
    case 4: information_box("", "Good, but not great.", "", 0); break;
    case 5: information_box("", "Oh well, better luck next time.", "", 0); break;
    case 6: information_box("", "Almost there. Try again.", "", 0); break;
    case 7: information_box("", "Very good, but not quite good enough.", "", 0); break;
   }
   end_challenge();
  }
 }

 if (arena[0].qstart != QSTART_NONE)
  end_qstart();

    //shutdown_network();

// fade_in(*palet, fade_speed);
// set_palette(*palet);
 do
 {

 } while (keypressed() == 0);

 clear_keybuf();

 //net_init();

}

void showAssignment()
{
     BITMAP *background = makeBitmap("Menu_Images/Instructions0.gif");

     draw_sprite(menuBuffer, background, 0, 0);
     blit(menuBuffer, screen, 0,0,0,0,1024,768);
		clear_keybuf();
		readkey();
		background = makeBitmap("Menu_Images/Instructions1.gif");
     draw_sprite(menuBuffer, background, 0, 0);
     blit(menuBuffer, screen, 0,0,0,0,1024,768);
		clear_keybuf();
		readkey();
}

void term_reinit(int wait)             /* fixup after running other progs */
{
   struct text_info dat;

   gppconio_init();
   gettextinfo(&dat);

   if (dat.screenheight != screen_h) {
      _set_screen_lines(screen_h);
      gettextinfo(&dat);
      screen_h = dat.screenheight;
      screen_w = dat.screenwidth;
      mouse_init();
   }

   set_bright_backgrounds();

   if (wait) {
      clear_keybuf();
      gch();
   }

   __djgpp_set_ctrl_c(0);
   setcbrk(0);
}

int NinmanGameGraph::DrawGameOptions() {

    int y = 220;
    DrawOptions(y);
    while (true) {
        clear_keybuf();
        readkey();
        if (key[KEY_DOWN]) {
            y = y + 55;
            {
                if (y > 330)
                    y = 220;
            }
        }
        if (key[KEY_UP]) {
            y = y - 55;
            {
                if (y < 220)
                    y = 330;
            }
        }
        if (key[KEY_ENTER]) {
            return y;
        }
        DrawOptions(y);
    }
}

int cin_num(char *lab, int x, int y, int col)
{
  clear_keybuf();
  char *st_edit = new char[101];
  st_edit[100] = char(NULL);
  char null_char = char(NULL);
  st_edit[0] = null_char;
  int st_pos = 0;
  while(!key[KEY_ENTER])
  {
    rectfill(screen,x,y,screen->w-1,y+10,BLACK);
    textprintf(screen,font,x,y,col,lab); textprintf(screen,font,x+text_length(font,lab),y,col,st_edit);
    st_edit[st_pos] = readkey() % 256;
    st_edit[st_pos+1] = null_char;
    if(!key[KEY_BACKSPACE]) st_pos++;
    else if(st_pos) {st_pos--; st_edit[st_pos] = null_char;}
    int char_num = int(st_edit[st_pos-1]);
    if((char_num < 48 || char_num > 57) && st_pos){st_pos--;st_edit[st_pos] = null_char;}
  }
  int ret_num = 0;
  for(int snum = 0; snum < st_pos; snum++)
    ret_num += int((int(st_edit[snum])-48) * pow(10,st_pos-snum-1));

  return ret_num;
}

int selecionarItemTeclado(OPCOES *menu, int *selected, int *keyCount)
{
	clear_keybuf();

	if (key[KEY_UP] && *keyCount == 0 && *selected != 0)
	{	
		*keyCount += 1;
		*selected -= 1;
	}	
	if (key[KEY_DOWN] && *keyCount == 0 && *selected < NUM_ITENS-1)
	{
		*keyCount += 1;
		*selected += 1;
	}
	
	if (!key[KEY_UP] && !key[KEY_DOWN])
		*keyCount = 0;
		
	if (key[KEY_ENTER])
	{
		return menu->itens[*selected].code;
	}
		
	return -1;
}

int main ()
{
    // initialize Allegro
    if (allegro_init () < 0)
    {
        allegro_message ("Error: Could not initialize Allegro");
        return -1;
    }
    // initialize gfx mode
    if (set_gfx_mode (GFX_AUTODETECT, 320, 200, 0, 0) < 0)
    {
        allegro_message ("Error: Could not set graphics mode");
        return -1;
    }
    // initialize keyboard
    install_keyboard ();
    clear_keybuf ();

    // call the example function
    test_mode_7 ();

    // exit Allegro
    allegro_exit ();

    return 0;

} END_OF_MAIN ();

//the final score screen
void CGame::ShowResults() {

	int i;
	int finalscore;
	WINDOWS_BITMAP *text;

	text = create_bitmap(220, 130);
	clear_to_color(text,makecol(255,0,255));
	

	scare_mouse();

	//background image
	blit((WINDOWS_BITMAP *)data[ZSCORE_BMP].dat, background,0,0,0,0,SCREEN_W,SCREEN_H);
	
	//print text on temp image and resize
	text_mode(-1);

	for (i=0;i<numplayers;i++) {
		
		finalscore = players[i].CalcFinalScore();
		textprintf_centre(text,font,110,(i*40),players[i].color,"%d - %s",finalscore,players[i].name);
	}
	
	masked_stretch_blit(text,background,0,0,220,130,210,190,390,250);

	blit(background,screen,0,0,0,0,SCREEN_W,SCREEN_H);

	clear_keybuf();
	readkey();

	destroy_bitmap(text);

}

// ==========================================================================
// MAIN loop
void interfac_user_handler(int start_ds1_idx)
{
    //int  ds1_idx;
    //
    int  done, cx, cy;
    int  old_mouse_x = mouse_x, old_mouse_y=mouse_y, old_mouse_b=0;
    int  cur_mouse_z = 0, old_mouse_z = 0;
    int  ticks_elapsed;


    // init
    ds1_idx               = start_ds1_idx;
    done                  = FALSE;


    // main loop

    clear_keybuf();



    while (! done) {

        my_set_fps();

        old_mouse_x = mouse_x;
        old_mouse_y = mouse_y;
        old_mouse_b = mouse_b;

        cur_mouse_z = mouse_z;

        mouse_to_tile(ds1_idx, &cx, &cy);

        if (cx < 0) { cx = 0; } else if (cx >= glb_ds1.width)  { cx = glb_ds1.width  - 1; }
        if (cy < 0) { cy = 0; } else if (cy >= glb_ds1.height) { cy = glb_ds1.height - 1; }

        // check if need to redraw the screen because of floor animation
        ticks_elapsed = glb_ds1edit.ticks_elapsed;
        if ( ticks_elapsed && (glb_ds1.animations_layer_mask == 1)) {
            // animated floor rate = 10 fps
            // therefore it's at 2/5 of 25 fps
            // but internal unit is in 5th
            glb_ds1.cur_anim_floor_frame += ticks_elapsed * 2;
        } else {
            glb_ds1edit.ticks_elapsed = 0;
        }

        // redraw the whole screen
        wpreview_draw_tiles(ds1_idx);
        glb_ds1edit.fps++;




        done = process_input();

    }
}

void textgfx_init()
{
#ifdef UNIX
	strcpy(_xwin.application_name, "vitetris");
	strcpy(_xwin.application_class, "Vitetris");
#endif
	if (install_allegro(SYSTEM_AUTODETECT, &errno, NULL) != 0)
		exit(1);
#ifdef UNIX
	sigaction(SIGINT, NULL, &allegro_sigint_handler);
	signal(SIGINT, sigint_handler);
#endif
	load_pc8x16_font();
	set_window_title(VITETRIS_VER);
	set_close_button_callback(close_btn);
#ifndef UNIX
	/* Seems to cause seg fault later quite randomly on Linux  */
	int depth = desktop_color_depth();
	if (depth != 0)
		set_color_depth(depth);
#endif
	virt_screen = set_screen(getopt_int("", "fullscreen"));
	lang |= LATIN1;
	if (!font8x16) {
		font8x16 = font;
		textgfx_flags |= ASCII;
	}
	setattr_normal();
#if WIN32 && !ALLEGRO_USE_CONSOLE
	if (exists("stdout.tmp")) {
		FILE *fp;
		freopen("stdout2.tmp", "w", stdout);
		fp = fopen("stdout.tmp", "r");
		if (fp) {
			char line[80];
			int i;
			for (i=0; i < 25 && fgets(line, 80, fp); i++) {
				setcurs(0, i);
				i += printline(line);	
			}
			fclose(fp);
			if (i) {
				refreshscreen();
				if (!strncmp(line, "Press ", 6)) {
					install_keyboard();
					clear_keybuf();
					readkey();
					remove_keyboard();
				}
			}
		}
		freopen("stdout.tmp", "w", stdout);
		delete_file("stdout2.tmp");
	}
#endif
}

/* handle the setup command */
static void setup_all_keys(void)
{
   int focus = 2;
   int i;

   /* Prepare dialog.  */
   set_dialog_color(keymap_dialog, black, white);
   centre_dialog(keymap_dialog);

   /* Parse input.  */
   while (1) {
      focus = do_dialog(keymap_dialog, focus);
      switch (focus) {
	 case 2:
	 case 4:

	    textprintf_centre_ex (screen, font,
	       keymap_dialog[7].x, keymap_dialog[7].y, red, -1,
	       "Press a key to map to the current scancode");
	    textprintf_centre_ex (screen, font,
	       keymap_dialog[7].x, keymap_dialog[7].y + 8, red, -1,
	       "(or a mouse button to leave it unchanged)");

	    /* Wait for new key press.  */
	    new_keycode = -1;
	    waiting_for_key = 1;

	    do {
	       poll_keyboard();
	       poll_mouse();

	       if (mouse_b)
		  waiting_for_key = 0;
	    }
	    while (waiting_for_key);

	    /* Save keycode to scancode mapping.  */
	    if ((new_keycode >= 0) && (new_keycode < 256)) {
	       keycode_to_scancode[new_keycode] = keymap_dialog[2].d1 + 1;
	    }

	    clear_keybuf();

	    break;
	 case 5:
	    return;
	 case 6:
	    for (i = 0; i < 256; i++) {
               if (keycode_to_scancode[i] >= 0)
		  _xwin.keycode_to_scancode[i] = keycode_to_scancode[i];
            }
	    return;
      }
   }
}

/***
* Cleanup and unloading
*/
void descarregar() {
	clear_keybuf();
	destroy_bitmap(fundo);
	destroy_bitmap(bomba);
	destroy_bitmap(coracao);
    
    for(int i =0;i<framesPersonagem;i++)
    {
	 delete personagem[i];
    }
	delete[] personagem;
}

/* handles double-clicking on a FLIC object in the grabber */
static int view_fli(DATAFILE *dat)
{
   show_mouse(NULL);
   clear_to_color(screen, gui_mg_color);
   play_memory_fli(dat->dat, screen, TRUE, fli_stopper);
   do {
   } while (mouse_b);
   clear_keybuf();
   set_pallete(datedit_current_palette);
   show_mouse(screen);
   return D_REDRAW;
}