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// -----------------------------------------------------------------------------
// This file is part of Broken Sword 2.5
// Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsd�rfer
//
// 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 zur�ck.
*/
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
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