From 1e19baedcbab645fb8a91785f9cf0fdb2fa42065 Mon Sep 17 00:00:00 2001
From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Thu, 9 Aug 2012 14:26:39 -0400
Subject: [PATCH] Ensuring sleep value is at least zero.

---
 003/src/life.erl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/003/src/life.erl b/003/src/life.erl
index f4b1fe5..605fa95 100644
--- a/003/src/life.erl
+++ b/003/src/life.erl
@@ -74,12 +74,16 @@ life_loop(
     },
 
     NewTimeMil = NewTime / 1000,
-    NextGenDelay = round(?GEN_INTERVAL - NewTimeMil),
+    NextGenDelay = at_least_zero(round(?GEN_INTERVAL - NewTimeMil)),
     timer:sleep(NextGenDelay),
 
     life_loop(NewState).
 
 
+at_least_zero(Integer) when Integer >= 0 -> Integer;
+at_least_zero(_) -> 0.
+
+
 do_print_screen(Board, Bar, X, Y, N, GenCount, Time, PrintTime) ->
     ok = do_print_status(Bar, X, Y, N, GenCount, Time, PrintTime),
     ok = do_print_board(Board).
-- 
2.20.1