/*
*	DSFML - SFML Library wrapper for the D programming language.
*	Copyright (C) 2008 Julien Dagorn (sirjulio13@gmail.com)
*	Copyright (C) 2010 Andreas Hollandt
*
*	This software is provided 'as-is', without any express or
*	implied warranty. In no event will the authors be held
*	liable for any damages arising from the use of this software.
*
*	Permission is granted to anyone to use this software for any purpose,
*	including commercial applications, and to alter it and redistribute
*	it freely, subject to the following restrictions:
*
*	1.  The origin of this software must not be misrepresented;
*		you must not claim that you wrote the original software.
*		If you use this software in a product, an acknowledgment
*		in the product documentation would be appreciated but
*		is not required.
*
*	2.  Altered source versions must be plainly marked as such,
*		and must not be misrepresented as being the original software.
*
*	3.  This notice may not be removed or altered from any
*		source distribution.
*/

module dsfml.system.clock;

import dsfml.system.common;

/**
 *  Utility class for manipulating time
 */ 
class Clock : DSFMLObject
{
	/**
	 *  Default constructor
	 */		
	this()
	{
		super(sfClock_Create());
	}

	/**
	 *  Destructor		
	 */		
	override void dispose()
	{
		sfClock_Destroy(m_ptr);
	}

	/**
	 *  Return the time elapsed since the last reset
	 *  Returns: 
	 *	  Elapsed Time in seconds						  
	 */		
	float getElapsedTime()
	{
		return sfClock_GetTime(m_ptr);
	}

	/**
	 *  Restart the timer		
	 */		
	void reset()
	{
		sfClock_Reset(m_ptr);
	}

private:
	
// External ====================================================================
	
	
	extern (C)
	{
		typedef void* function() pf_sfClock_Create;
		typedef void function(void*) pf_sfClock_Destroy;
		typedef float function(void*) pf_sfClock_GetTime;
		typedef void function(void*) pf_sfClock_Reset;
	
		static pf_sfClock_Create sfClock_Create;
		static pf_sfClock_Destroy sfClock_Destroy;
		static pf_sfClock_GetTime sfClock_GetTime;
		static pf_sfClock_Reset sfClock_Reset;
		
		static this()
		{
		debug
			DllLoader dll = DllLoader.load("csfml-system-d");
		else
			DllLoader dll = DllLoader.load("csfml-system");
			
			sfClock_Create = cast(pf_sfClock_Create)dll.getSymbol("sfClock_Create");
			sfClock_Destroy = cast(pf_sfClock_Destroy)dll.getSymbol("sfClock_Destroy");
			sfClock_GetTime = cast(pf_sfClock_GetTime)dll.getSymbol("sfClock_GetTime");
			sfClock_Reset = cast(pf_sfClock_Reset)dll.getSymbol("sfClock_Reset");
		}
	}
}