1 files changed, 130 insertions, 0 deletions
diff --git a/src/base/time.cpp b/src/base/time.cpp
new file mode 100644
index 00000000..9a63270d
--- /dev/null
+++ b/src/base/time.cpp
@@ -0,0 +1,130 @@
+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#include "time.hpp"
+#include <SDL/SDL.h>
+
+#define SDL_CORRECTION_RATIO 1000
+
+namespace usdx
+{
+
+	Time::Time(void)
+	{
+	}
+
+	float Time::get_time()
+	{
+		return SDL_GetTicks() / SDL_CORRECTION_RATIO;
+	}
+
+
+	/*
+	 * RelativeTimer
+	 */
+
+	/*
+	 * creates a new timer.
+	 * if triggermode is false (default), the timer
+	 * will immediately begin with counting.
+	 * if triggermode is true, it will wait until get/settime() or pause() is called
+	 * for the first time.
+	 */
+	RelativeTimer::RelativeTimer(bool trigger_mode)
+	{
+		this->trigger_mode = trigger_mode;
+		reset();
+		this->paused = false;
+	}
+
+	void RelativeTimer::pause(void)
+	{
+		relative_time_offset = get_time();
+		paused = true;
+	}
+
+	void RelativeTimer::resume(void)
+	{
+		absolute_time = SDL_GetTicks();
+		paused = false;
+	}
+
+	/*
+	 * Returns the counter of the timer.
+	 * If in TriggerMode it will return 0 and start the counter on the first call.
+	 */
+	float RelativeTimer::get_time(void)
+	{
+		// initialize absolute time on first call in triggered mode
+		if (trigger_mode && (absolute_time == 0))
+		{
+			absolute_time = SDL_GetTicks();
+			return relative_time_offset;
+		}
+
+		if (paused)
+			return relative_time_offset;
+
+		return relative_time_offset + (SDL_GetTicks() - absolute_time) / SDL_CORRECTION_RATIO;
+	}
+
+	/*
+	 * Returns the counter of the timer and resets the counter to 0 afterwards.
+	 * Note: In TriggerMode the counter will not be stopped as with Reset().
+	 */
+	float RelativeTimer::get_and_reset_time(void)
+	{
+		float result = get_time();
+		set_time(0);
+		return result;
+	}
+
+	/*
+	 * Sets the timer to the given time. This will trigger in TriggerMode if
+	 * Trigger is set to true. Otherwise the counter's state will not change.
+	 */
+	void RelativeTimer::set_time(float time, bool trigger)
+	{
+		relative_time_offset = time;
+
+		if (!trigger_mode || trigger)
+			absolute_time = SDL_GetTicks();
+	}
+
+	/*
+	 * Resets the counter of the timer to 0.
+	 * If in TriggerMode the timer will not start counting until it is triggered again.
+	 */
+	void RelativeTimer::reset(void)
+	{
+		relative_time_offset = 0;
+
+		if (trigger_mode)
+			absolute_time = 0;
+		else
+			absolute_time = SDL_GetTicks();
+	}
+}