47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#pragma once
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#include <ctime>
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namespace charcoal
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{
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//A class to handle the FPS of the game
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//Calculations are done per the number of frames specified
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//Frames must be a value from 2 - 255
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//Recommended numbers for frames is 2 (Instant), 5 (Slightly Smoothed), 60 (Smoothed)
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//Max number for frames = 255
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//Lower frames = jumpy, instant updates
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//Higher frames = smoother, flowing updates
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class FPS final
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{
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public:
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FPS(unsigned short frames = 2);
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~FPS();
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//Returns the clock of the last mark() call
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const clock_t& get_clock() const;
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//Returns FPS (frames per second) of the game (based on the last marked frame)
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//CLOCKS_PER_SECOND / (m_clock - m_prevClock)
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float get_spf() const;
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//Returns FPS (frames per second) of the game (based on the last marked frame)
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//CLOCKS_PER_SECOND / (m_clock - m_prevClock)
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float get_fps() const;
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//Fills the clocks with the current clock() value (to prevent unreasonable clock counts at the first few frames)
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void prepare();
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//Marks the end of the frame (resets the clock)
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//Should be called right before the update() and render() functions
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//Also calculates the seconds per frame (able to be considered the dTime)
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//(m_clock - m_prevClock) / CLOCKS_PER_SEC
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float mark();
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private:
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//m_iter marks the place of the next mark
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unsigned short m_iter;
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unsigned short m_frames;
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clock_t* m_clocks = nullptr;
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};
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} |