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66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#pragma once
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#include "IReferenceCounted.h"
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namespace irr
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{
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//! Interface for getting and manipulating the virtual time
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class ITimer : public virtual IReferenceCounted
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{
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public:
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//! Returns current real time in milliseconds of the system.
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/** This value does not start with 0 when the application starts.
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For example in one implementation the value returned could be the
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amount of milliseconds which have elapsed since the system was started.
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*/
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virtual u32 getRealTime() const = 0;
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//! Returns current virtual time in milliseconds.
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/** This value starts with 0 and can be manipulated using setTime(),
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stopTimer(), startTimer(), etc. This value depends on the set speed of
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the timer if the timer is stopped, etc. If you need the system time,
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use getRealTime() */
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virtual u32 getTime() const = 0;
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//! sets current virtual time
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virtual void setTime(u32 time) = 0;
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//! Stops the virtual timer.
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/** The timer is reference counted, which means everything which calls
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stop() will also have to call start(), otherwise the timer may not
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start/stop correctly again. */
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virtual void stop() = 0;
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//! Starts the virtual timer.
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/** The timer is reference counted, which means everything which calls
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stop() will also have to call start(), otherwise the timer may not
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start/stop correctly again. */
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virtual void start() = 0;
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//! Sets the speed of the timer
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/** The speed is the factor with which the time is running faster or
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slower then the real system time. */
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virtual void setSpeed(f32 speed = 1.0f) = 0;
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//! Returns current speed of the timer
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/** The speed is the factor with which the time is running faster or
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slower then the real system time. */
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virtual f32 getSpeed() const = 0;
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//! Returns if the virtual timer is currently stopped
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virtual bool isStopped() const = 0;
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//! Advances the virtual time
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/** Makes the virtual timer update the time value based on the real
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time. This is called automatically when calling IrrlichtDevice::run(),
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but you can call it manually if you don't use this method. */
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virtual void tick() = 0;
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};
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} // end namespace irr
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