b351656491
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2748 a1c6a512-1295-4272-9138-f99709370657
117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Itai Shaked
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdlib.h>
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#include "lcd.h"
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#include "config.h"
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#include "kernel.h"
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#include "menu.h"
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#include "button.h"
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#define NUM_PARTICLES 100
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static short particles[NUM_PARTICLES][2];
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static bool particle_exists(int particle)
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{
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if (particles[particle][0]>=0 && particles[particle][1]>=0 &&
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particles[particle][0]<112 && particles[particle][1]<64)
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return true;
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else
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return false;
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}
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static int create_particle(void)
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{
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int i;
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for (i=0; i<NUM_PARTICLES; i++) {
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if (!particle_exists(i)) {
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particles[i][0]=(rand()%112);
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particles[i][1]=0;
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return i;
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}
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}
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return -1;
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}
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static void snow_move(void)
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{
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int i;
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if (!(rand()%2))
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create_particle();
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for (i=0; i<NUM_PARTICLES; i++) {
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if (particle_exists(i)) {
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lcd_clearpixel(particles[i][0],particles[i][1]);
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switch ((rand()%7)) {
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case 0:
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particles[i][0]++;
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break;
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case 1:
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particles[i][0]--;
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break;
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case 2:
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break;
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default:
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particles[i][1]++;
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break;
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}
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if (particle_exists(i))
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lcd_drawpixel(particles[i][0],particles[i][1]);
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}
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}
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}
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static void snow_init(void)
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{
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int i;
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for (i=0; i<NUM_PARTICLES; i++) {
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particles[i][0]=-1;
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particles[i][1]=-1;
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}
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lcd_clear_display();
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}
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bool snow(void)
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{
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snow_init();
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while (1) {
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snow_move();
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lcd_update();
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sleep(HZ/20);
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if (button_get(false) == BUTTON_OFF)
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return false;
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}
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}
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