Throttle rendering to reduce CPU usage

1 files changed, 9 insertions, 12 deletions

diff --git a/simloop/include/simloop.h b/simloop/include/simloop.h
index 4e3ed20..6a83b23 100644
--- a/simloop/include/simloop.h
+++ b/simloop/include/simloop.h
@@ -2,7 +2,7 @@
 
 #include <stdint.h>
 
-typedef uint64_t simloop_time_t;
+typedef uint64_t simloop_time_t; ///< Time delta in nanoseconds.
 
 typedef struct SimloopArgs {
   int update_fps;     ///< Update frame rate. Must be >0.
@@ -11,13 +11,12 @@ typedef struct SimloopArgs {
 
 typedef struct SimloopOut {
   uint64_t       frame;          ///< Frame counter.
-  simloop_time_t render_elapsed; ///< Amount of time elapsed in the rendering.
   simloop_time_t update_elapsed; ///< Amount of time elapsed in the simulation.
   simloop_time_t update_dt;      ///< Delta time for simulation updates.
-  double         percent_frame;  ///< Percent progress between this frame and
-                                 ///< the next. Used for smooth animation.
-  bool should_update;            ///< Whether the simulation should update.
-  bool should_render;            ///< Whether the simulation should be rendered.
+  simloop_time_t throttle;      ///< Render throttle if max render fps is given.
+  double         percent_frame; ///< Percent progress between this frame and
+                                ///< the next. Used for smooth animation.
+  bool should_update;           ///< Whether the simulation should update.
 } SimloopOut;
 
 typedef struct SimloopTimeline {
@@ -26,12 +25,10 @@ typedef struct SimloopTimeline {
 } SimloopTimeline;
 
 typedef struct Simloop {
-  simloop_time_t  clock;  ///< Tracks simulation time.
-  uint64_t        frame;  ///< Frame counter, number of updates done.
-  SimloopTimeline update; ///< Update timeline.
-  SimloopTimeline render; ///< Render timeline.
-  double          percent_frame;
-  bool            first_iter;
+  simloop_time_t  clock;      ///< Tracks simulation time.
+  uint64_t        frame;      ///< Frame counter, number of updates done.
+  SimloopTimeline update;     ///< Update timeline.
+  simloop_time_t  render_ddt; ///< Desired render delta time.
 } Simloop;
 
 /// Create a simulation loop.