From 57fc49ea5419cca5d56f7e519792fce14f6350f1 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Thu, 24 Mar 2011 14:21:33 -0400
Subject: [PATCH] create new stars when old ones pass

---
 modes/Starfield.cc | 12 +++++++++++-
 modes/Starfield.h  |  1 +
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/modes/Starfield.cc b/modes/Starfield.cc
index 6efb730..9b0aa19 100644
--- a/modes/Starfield.cc
+++ b/modes/Starfield.cc
@@ -16,7 +16,9 @@ Starfield::Starfield(GnomeScreensaver & gs)
     m_last_ticks = ticks;
     srand(time(NULL) + getpid());
     for (int i = 0; i < NUM_STARS; i++)
-        newStar(i, ticks - (uint64_t) (i * FLYBY_TICKS / (double)NUM_STARS));
+        newStar(NUM_STARS - i - 1,
+                ticks - (uint64_t) (i * FLYBY_TICKS / (double)NUM_STARS));
+    m_star_idx = 0;
 }
 
 Starfield::~Starfield()
@@ -43,6 +45,14 @@ bool Starfield::expose (GnomeScreensaver & gs)
         glPopMatrix();
     }
 
+    while ((m_stars[m_star_idx].create_time + FLYBY_TICKS) <= ticks)
+    {
+        newStar(m_star_idx, ticks);
+        m_star_idx++;
+        if (m_star_idx >= NUM_STARS)
+            m_star_idx = 0;
+    }
+
     m_last_ticks = gs.getTicks();
 
     return true;
diff --git a/modes/Starfield.h b/modes/Starfield.h
index 9fad64a..506aeb6 100644
--- a/modes/Starfield.h
+++ b/modes/Starfield.h
@@ -31,6 +31,7 @@ class Starfield : public Mode
     protected:
         LogoBox m_logobox;
         uint64_t m_last_ticks;
+        int m_star_idx;
         Star m_stars[NUM_STARS];
         void getRandomAxis(float (*axis)[3]);
         void newStar(int idx, uint64_t ticks);