From a96b108a9b74baaa63cb84da212d725808b91d88 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 21 Oct 2007 15:13:19 +0000
Subject: Initial commit

---
 src/server/Makefile.am |  7 +++++++
 src/server/main.cc     | 40 ++++++++++++++++++++++++++++++++++++++++
 src/server/timer.cc    | 37 +++++++++++++++++++++++++++++++++++++
 src/server/timer.h     | 40 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 124 insertions(+)
 create mode 100644 src/server/Makefile.am
 create mode 100644 src/server/main.cc
 create mode 100644 src/server/timer.cc
 create mode 100644 src/server/timer.h

diff --git a/src/server/Makefile.am b/src/server/Makefile.am
new file mode 100644
index 0000000..20dffcd
--- /dev/null
+++ b/src/server/Makefile.am
@@ -0,0 +1,7 @@
+INCLUDES = -I$(top_srcdir)/src
+METASOURCES = AUTO
+bin_PROGRAMS = osiriond
+osiriond_SOURCES = main.cc timer.cc timer.h
+noinst_HEADERS = timer.h
+osiriond_LDADD = $(top_builddir)/src/game/libgame.la \
+	$(top_builddir)/src/common/libcommon.la
diff --git a/src/server/main.cc b/src/server/main.cc
new file mode 100644
index 0000000..3ce5197
--- /dev/null
+++ b/src/server/main.cc
@@ -0,0 +1,40 @@
+/* server/main.cc
+   This file is part of the Osirion project and is distributed under 
+   the terms and conditions of the GNU General Public License version 2 
+*/
+
+// C++ headers
+#include <iostream>
+
+// project headers
+#include "osirion.h"
+
+#include "game/game.h"
+#include "timer.h"
+
+void quit(int status)
+{
+	exit(status);
+}
+
+int main( int argc, char *argv[] )
+{
+	const float server_framerate =  1.0f / 20.0f;
+	std::cout << "The Osirion project " << OSIRION_VERSION << std::endl;
+	Timer timer;
+
+    	// initialize game
+	game::init();
+	timer.mark();
+
+	while(game::initialized) {
+		float elapsed = timer.elapsed();		
+		game::update(elapsed);
+		timer.sleep(server_framerate - elapsed);
+		timer.mark();
+	}
+	// shutdown
+	game::shutdown();
+
+	quit(0);
+}
diff --git a/src/server/timer.cc b/src/server/timer.cc
new file mode 100644
index 0000000..c8e6975
--- /dev/null
+++ b/src/server/timer.cc
@@ -0,0 +1,37 @@
+/* server/timer.cc
+   This file is part of the Osirion project and is distributed under 
+   the terms and conditions of the GNU General Public License version 2 
+*/
+
+#include "timer.h"
+#include <unistd.h>
+
+Timer::Timer()
+{
+	gettimeofday(&this->timer_tick, &this->timer_tz);
+ 	this->timer_elapsed = 0;
+}
+
+Timer::~Timer()
+{
+}
+
+void Timer::mark()
+{
+	gettimeofday(&timer_tick, &timer_tz);
+}
+
+float Timer::elapsed()
+{	timeval tick;
+	
+	gettimeofday(&tick, &timer_tz);
+	
+	// calculate elapsed time in 10^-6 seconds
+	long delta = (tick.tv_sec - timer_tick.tv_sec) * 1000000 + (tick.tv_usec - timer_tick.tv_usec);
+	return( (float) delta / 1000000);
+}
+
+void Timer::sleep(float seconds) 
+{
+	usleep((useconds_t) seconds*1000000.0f);
+}
diff --git a/src/server/timer.h b/src/server/timer.h
new file mode 100644
index 0000000..63957ee
--- /dev/null
+++ b/src/server/timer.h
@@ -0,0 +1,40 @@
+#ifndef __INCLUDED_TIMER_H__
+#define __INCLUDED_TIMER_H__
+
+#include <sys/time.h>
+
+
+/// a timer measures that intervals in seconds
+/*! A timer class measures the time elapsed
+* between the last two calls to its mark() function.
+*/
+class Timer {
+public:
+	/// Constructor
+	Timer();
+	/// Destructor
+	~Timer();
+
+	/// mark the current time as zero
+	/*! Reset the timer, all subsequent calls too elapsed() will
+	 * use now as a reference
+	* that must be timed.
+	*/
+	void mark();
+
+	/*! return the time elapsed since the last mark
+	* @see mark()
+	*/
+	float elapsed();
+
+	/// suspend calling process for a number of seconds
+	void sleep(float seconds);
+
+private:
+	float 				timer_elapsed;
+	struct timezone 		timer_tz;
+	struct timeval 			timer_tick;
+}; // class Timer
+
+
+#endif // __INCLUDED_TIMER_H__
-- 
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