#ifndef _CTIMING_HPP_
#define _CTIMING_HPP_

/*** SDL Header Files ***/
#include <SDL.h>

/*** DLL Header File ***/
#include <dllExport.h>

#define MAXIMUM_FRAME_RATE 120
#define MINIMUM_FRAME_RATE 15
#define UPDATE_INTERVAL (1.0 / MAXIMUM_FRAME_RATE)
#define MAX_CYCLES_PER_FRAME (MAXIMUM_FRAME_RATE / MINIMUM_FRAME_RATE)

namespace TimingEngine {
	/* Singleton */
	class EXPORT_FROM_MYDLL cTiming
	{
	private:
		cTiming( const unsigned long int ftp = 30 );
		~cTiming();
	
	public:
		cTiming& operator=( const cTiming& copy );

		/// Functions
		static cTiming& Inst();
		static void Delete();

		const bool Initialize() const;
		/* Sets up timing */
		void Setup();
		void CleanUp();
		/* Sleeps if need */
		void Time();		

		/// Sets
		void setFTP( const unsigned long int ftp = 30 );
		/// Gets
		const unsigned long int getFTP() const;
		/* Gets return true if Timer was initialized */
		const bool IsInit() const;

		const float getFrameTime() const;

		
	private:
		const unsigned long int TimeLeft();
		void AddTimeandRate();

		const float FrameTime();

	private:
		/// Variables
		unsigned long int m_nextTime;/// = 0
		
		unsigned long int m_rate;/// = (1000 / m_ftp)

		unsigned long int m_ftp;/// = 30

		static cTiming* sp_inst;/// = nullptr

		unsigned long int m_start;/// = 0
		float m_lastTime;/// = 0.0
		float m_frameTime;/// = 0.0
	};/// END CLASS DEFINITION cTiming
}/// END NAMESPACE DEFINITION TimingEngine
#endif/// END IFNDEF _CTIMING_HPP_