diff options
Diffstat (limited to 'src/crepe/api/LoopTimer.h')
| -rw-r--r-- | src/crepe/api/LoopTimer.h | 264 |
1 files changed, 132 insertions, 132 deletions
diff --git a/src/crepe/api/LoopTimer.h b/src/crepe/api/LoopTimer.h index e1cfc35..0089b24 100644 --- a/src/crepe/api/LoopTimer.h +++ b/src/crepe/api/LoopTimer.h @@ -3,141 +3,141 @@ #include <cstdint> namespace crepe{ - + class LoopTimer { public: -/** - * \brief Get the singleton instance of LoopTimer. - * - * \return A reference to the LoopTimer instance. - */ -static LoopTimer& get_instance(); - -/** - * \brief Get the current delta time for the current frame. - * - * \return Delta time in seconds since the last frame. - */ -double get_delta_time() const; - -/** - * \brief Get the current game time. - * - * \note The current game time may vary from the real-world elapsed time. - * It is the cumulative sum of each frame's delta time. - * - * \return Elapsed game time in milliseconds. - */ -int get_current_time() const; - -/** - * \brief Set the target frames per second (FPS). - * - * \param fps The number of frames that should be rendered per second. - */ -void set_fps(int fps); - -/** - * \brief Get the current frames per second (FPS). - * - * \return Current FPS. - */ -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; - -/** - * \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); - -private: -friend class LoopManager; - -/** - * \brief Start the loop timer. - * - * Initializes the timer to begin tracking frame times. - */ -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(); - -/** - * \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 seconds. - */ -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 seconds. - */ -double get_lag() const; - -/** - * \brief Construct a new LoopTimer object. - * - * Private constructor for singleton pattern to restrict instantiation - * outside the class. - */ -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(); - -/** - * \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(); + /** + * \brief Get the singleton instance of LoopTimer. + * + * \return A reference to the LoopTimer instance. + */ + static LoopTimer& get_instance(); + + /** + * \brief Get the current delta time for the current frame. + * + * \return Delta time in seconds since the last frame. + */ + double get_delta_time() const; + + /** + * \brief Get the current game time. + * + * \note The current game time may vary from the real-world elapsed time. + * It is the cumulative sum of each frame's delta time. + * + * \return Elapsed game time in milliseconds. + */ + int get_current_time() const; + + /** + * \brief Set the target frames per second (FPS). + * + * \param fps The number of frames that should be rendered per second. + */ + void set_fps(int fps); + + /** + * \brief Get the current frames per second (FPS). + * + * \return Current FPS. + */ + 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; + + /** + * \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); + + private: + friend class LoopManager; + + /** + * \brief Start the loop timer. + * + * Initializes the timer to begin tracking frame times. + */ + 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(); + + /** + * \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 seconds. + */ + 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 seconds. + */ + double get_lag() const; + + /** + * \brief Construct a new LoopTimer object. + * + * Private constructor for singleton pattern to restrict instantiation + * outside the class. + */ + 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(); + + /** + * \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(); private: -//! Current frames per second -int fps = 50; -///< Current game scale -double game_scale = 1; -//! Maximum delta time to avoid large jumps -double maximum_delta_time = 0.25; -//! Delta time for the current frame -double delta_time = 0; -//! Target time per frame in seconds -double frame_target_time = 1.0 / fps; -//! Fixed delta time for fixed updates -double fixed_delta_time = 0.02; -//! Total elapsed game time -double elapsed_time = 0; -//! Total elapsed time for fixed updates -double elapsed_fixed_time = 0; -//! Time of the last frame -uint64_t last_frame_time = 0; + //! Current frames per second + int fps = 50; + ///< Current game scale + double game_scale = 1; + //! Maximum delta time to avoid large jumps + double maximum_delta_time = 0.25; + //! Delta time for the current frame + double delta_time = 0; + //! Target time per frame in seconds + double frame_target_time = 1.0 / fps; + //! Fixed delta time for fixed updates + double fixed_delta_time = 0.02; + //! Total elapsed game time + double elapsed_time = 0; + //! Total elapsed time for fixed updates + double elapsed_fixed_time = 0; + //! Time of the last frame + uint64_t last_frame_time = 0; }; } // namespace crepe |