From 77904ab892b6a79950a3fc473a1104ebd9b52abd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Stenberg?= <bjorn@haxx.se>
Date: Fri, 6 Sep 2002 22:30:10 +0000
Subject: Added snow for real.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2216 a1c6a512-1295-4272-9138-f99709370657
---
 apps/recorder/snow.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 apps/recorder/snow.c

diff --git a/apps/recorder/snow.c b/apps/recorder/snow.c
new file mode 100644
index 0000000..4d4e595
--- /dev/null
+++ b/apps/recorder/snow.c
@@ -0,0 +1,107 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Itai Shaked
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdlib.h>
+#include "lcd.h"
+#include "config.h"
+#include "kernel.h"
+#include "menu.h"
+#include "button.h"
+
+#define NUM_PARTICLES 100
+
+static short particles[NUM_PARTICLES][2];
+
+static bool particle_exists(int particle)
+{
+    if (particles[particle][0]>=0 && particles[particle][1]>=0 && 
+        particles[particle][0]<112 && particles[particle][1]<64) 
+        return true;
+    else
+        return false;
+}
+
+static int create_particle(void)
+{
+    int i;
+
+    for (i=0; i<NUM_PARTICLES; i++) {
+        if (!particle_exists(i)) {
+            particles[i][0]=(rand()%112);
+            particles[i][1]=0;
+            return i;
+        }
+    }
+    return -1;
+}
+
+static void snow_move(void)
+{
+    int i;
+
+    if (!(rand()%2))
+        create_particle();
+
+    for (i=0; i<NUM_PARTICLES; i++) {
+        if (particle_exists(i)) {
+            lcd_clearpixel(particles[i][0],particles[i][1]);
+            switch ((rand()%7)) {
+                case 0:
+                    particles[i][0]++;
+                    break;
+
+                case 1:
+                    particles[i][0]--;
+                    break;
+
+                case 2:
+                    break;
+
+                default:
+                    particles[i][1]++;
+                    break;
+            }
+            if (particle_exists(i))
+                lcd_drawpixel(particles[i][0],particles[i][1]);
+        }
+    }
+}
+
+static void snow_init(void)
+{
+    int i;
+
+    for (i=0; i<NUM_PARTICLES; i++) {
+        particles[i][0]=-1;
+        particles[i][1]=-1;
+    }        
+    lcd_clear_display();
+}
+
+Menu snow(void)
+{
+    snow_init();
+
+    while (1) {
+        snow_move();
+        lcd_update();
+        sleep(HZ/20);
+        if (button_get(false))
+            return MENU_OK;
+    }
+}
-- 
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