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+<HTML
+><HEAD
+><TITLE
+>Time Examples</TITLE
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+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="GUIDETIMEEXAMPLES"
+></A
+>Time Examples</H1
+><P
+></P
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN412"
+></A
+>Time based game loop</H2
+><P
+><PRE
+CLASS="PROGRAMLISTING"
+>#define TICK_INTERVAL 30
+
+static Uint32 next_time;
+
+Uint32 time_left(void)
+{
+ Uint32 now;
+
+ now = SDL_GetTicks();
+ if(next_time <= now)
+ return 0;
+ else
+ return next_time - now;
+}
+
+
+/* main game loop */
+
+ next_time = SDL_GetTicks() + TICK_INTERVAL;
+ while ( game_running ) {
+ update_game_state();
+ SDL_Delay(time_left());
+ next_time += TICK_INTERVAL;
+ } </PRE
+></P
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