added chrono::duration

1 files changed, 53 insertions, 52 deletions

diff --git a/src/crepe/api/LoopTimer.h b/src/crepe/api/LoopTimer.h
index 5309d2f..ec48e4a 100644
--- a/src/crepe/api/LoopTimer.h
+++ b/src/crepe/api/LoopTimer.h
@@ -1,144 +1,145 @@
-#pragma once
+ #pragma once
 
 #include <cstdint>
+#include <chrono>
 
 namespace crepe {
 
 class LoopTimer {
 public:
-	/**
+    /**
      * \brief Get the singleton instance of LoopTimer.
      *
      * \return A reference to the LoopTimer instance.
      */
-	static LoopTimer & get_instance();
+    static LoopTimer& get_instance();
 
-	/**
+    /**
      * \brief Get the current delta time for the current frame.
      *
-     * \return Delta time in milliseconds since the last frame.
+     * \return Delta time in seconds since the last frame.
      */
-	double get_delta_time() const;
+    double get_delta_time() const;
 
-	/**
+    /**
      * \brief Get the current game time.
      *
      * \note The current game time may vary from real-world elapsed time.
      * It is the cumulative sum of each frame's delta time.
      *
-     * \return Elapsed game time in milliseconds.
+     * \return Elapsed game time in seconds.
      */
-	double get_current_time() const;
+    double get_current_time() const;
 
-	/**
+    /**
      * \brief Set the target frames per second (FPS).
      *
      * \param fps The desired frames rendered per second.
      */
-	void set_fps(int fps);
+    void set_fps(int fps);
 
-	/**
+    /**
      * \brief Get the current frames per second (FPS).
      *
      * \return Current FPS.
      */
-	int get_fps() const;
+    int get_fps() const;
 
-	/**
+    /**
      * \brief Get the current game scale.
      *
      * \return The current game scale, where 0 = paused, 1 = normal speed, and values > 1 speed up the game.
      */
-	double get_game_scale() const;
+    double get_game_scale() const;
 
-	/**
+    /**
      * \brief Set the game scale.
      *
      * \param game_scale The desired game scale (0 = pause, 1 = normal speed, > 1 = speed up).
      */
-	void set_game_scale(double game_scale);
+    void set_game_scale(double game_scale);
 
 private:
-	friend class LoopManager;
+    friend class LoopManager;
 
-	/**
+    /**
      * \brief Start the loop timer.
      *
      * Initializes the timer to begin tracking frame times.
      */
-	void start();
+    void start();
 
-	/**
+    /**
      * \brief Enforce the frame rate limit.
      *
      * Ensures that the game loop does not exceed the target FPS by delaying
      * frame updates as necessary.
      */
-	void enforce_frame_rate();
+    void enforce_frame_rate();
 
-	/**
+    /**
      * \brief Get the fixed delta time for consistent updates.
      *
      * Fixed delta time is used for operations that require uniform time steps,
      * such as physics calculations.
      *
-     * \return Fixed delta time in milliseconds.
+     * \return Fixed delta time in seconds.
      */
-	double get_fixed_delta_time() const;
+    double get_fixed_delta_time() const;
 
-	/**
+    /**
      * \brief Get the accumulated lag in the game loop.
      *
      * Lag represents the difference between the target frame time and the
      * actual frame time, useful for managing fixed update intervals.
      *
-     * \return Accumulated lag in milliseconds.
+     * \return Accumulated lag in seconds.
      */
-	double get_lag() const;
+    double get_lag() const;
 
-	/**
+    /**
      * \brief Construct a new LoopTimer object.
      *
      * Private constructor for singleton pattern to restrict instantiation
      * outside the class.
      */
-	LoopTimer();
+    LoopTimer();
 
-	/**
+    /**
      * \brief Update the timer to the current frame.
      *
      * Calculates and updates the delta time for the current frame and adds it to
      * the cumulative game time.
      */
-	void update();
+    void update();
 
-	/**
+    /**
      * \brief Advance the game loop by a fixed update interval.
      *
      * This method progresses the game state by a consistent, fixed time step,
      * allowing for stable updates independent of frame rate fluctuations.
      */
-	void advance_fixed_update();
+    void advance_fixed_update();
 
 private:
-	//! Current frames per second
-	int fps = 50;
-	//! Current game scale
-	double game_scale = 1;
-	//! Maximum delta time in milliseconds to avoid large jumps
-	double maximum_delta_time = 250;
-	//! Delta time for the current frame in milliseconds
-	double delta_time = 0;
-	//! Target time per frame in milliseconds
-	double frame_target_time = 1000.0 / fps;
-	//! Fixed delta time for fixed updates in milliseconds
-	double fixed_delta_time = 20;
-	//! Total elapsed game time in milliseconds
-	double elapsed_time = 0;
-	//! Total elapsed time for fixed updates in milliseconds
-	double elapsed_fixed_time = 0;
-	//! Time of the last frame in milliseconds
-	uint64_t last_frame_time = 0;
+    //! Current frames per second
+    int fps = 50;
+    //! Current game scale
+    double game_scale = 1;
+    //! Maximum delta time in seconds to avoid large jumps
+    std::chrono::duration<double>  maximum_delta_time{0.25};
+    //! Delta time for the current frame in seconds
+    std::chrono::duration<double> delta_time{0.0};
+    //! Target time per frame in seconds
+    std::chrono::duration<double> frame_target_time = std::chrono::seconds(1) / fps;
+    //! Fixed delta time for fixed updates in seconds
+    std::chrono::duration<double> fixed_delta_time = std::chrono::seconds(1) / 50;
+    //! Total elapsed game time in seconds
+    std::chrono::duration<double> elapsed_time{0.0};
+    //! Total elapsed time for fixed updates in seconds
+    std::chrono::duration<double> elapsed_fixed_time{0.0};
+    //! Time of the last frame 
+    std::chrono::steady_clock::time_point last_frame_time;
 };
 
 } // namespace crepe