SWORD25: Importing original sources

svn-id: r53171

1 files changed, 76 insertions, 0 deletions

diff --git a/engines/sword25/gfx/framecounter.h b/engines/sword25/gfx/framecounter.h
new file mode 100755
index 0000000000..79a2b04df6
--- /dev/null
+++ b/engines/sword25/gfx/framecounter.h
@@ -0,0 +1,76 @@
+// -----------------------------------------------------------------------------
+// This file is part of Broken Sword 2.5
+// Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdörfer
+//
+// Broken Sword 2.5 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.
+//
+// Broken Sword 2.5 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 Broken Sword 2.5; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+// -----------------------------------------------------------------------------
+
+#ifndef _BS_FRAMECOUNTER_H
+#define _BS_FRAMECOUNTER_H
+
+// Includes
+#include "kernel/common.h"
+#include "kernel/bs_stdint.h"
+
+/**
+	@brief Eine einfache Klasse die einen Framecounter implementiert.
+*/
+class BS_Framecounter
+{
+private:
+	enum
+	{
+		DEFAULT_UPDATE_FREQUENCY = 10
+	};
+
+public:
+	/**
+		@brief Erzeugt ein neues BS_Framecounter Objekt.
+		@param UpdateFrequency gibt an wie oft der Framecounter in einer Sekunde aktualisiert werden soll.<br>
+			   Der Standardwert ist 10.
+	*/
+	BS_Framecounter(int UpdateFrequency = DEFAULT_UPDATE_FREQUENCY);
+
+	/**
+		@brief Bestimmt wie oft der Framecounter in einer Sekunde aktualisiert werden soll.
+		@param UpdateFrequency gibt an wie oft der Framecounter in einer Sekunde aktualisiert werden soll.
+	*/
+	inline void SetUpdateFrequency(int UpdateFrequency);
+
+	/**
+		@brief Diese Methode muss einmal pro Frame aufgerufen werden.
+	*/
+	void Update();
+
+	/**
+		@brief Gibt den aktuellen FPS-Wert zurück.
+	*/
+	int GetFPS() const { return m_FPS; }
+
+private:
+	int	m_FPS;
+	int m_FPSCount;
+	uint64_t m_LastUpdateTime;
+	uint64_t m_UpdateDelay;
+};
+
+// Inlines
+void BS_Framecounter::SetUpdateFrequency(int UpdateFrequency)
+{
+	// Frequenz in Laufzeit (in Microsekunden) umrechnen.
+	m_UpdateDelay = 1000000 / UpdateFrequency;
+}
+
+#endif