app-templ/src/saura/core/app_base/app_base.cpp

#include "app_base.hpp"
#include <memory>

namespace saura {
void AppBase::run() {
  os_ctx = std::make_unique<os::Context>();

  this->start();

  const double fps_max = 60.0;
  const double period_max = 1.0 / fps_max;
  const double perf_frequency = os_ctx->get_performance_frequency();

  double time = 0.0;
  double begin_counter = 0.0;
  double end_counter = 0.0;

  while (!is_quit) {

    double counter_elapsed = begin_counter - end_counter;
    double dt = counter_elapsed / perf_frequency;
    double fps = perf_frequency / counter_elapsed;

    begin_counter = os_ctx->get_performance_counter();

    if (dt >= period_max) {
      if (dt >= 1.0) {
        dt = period_max;
      }

      if (!os_ctx->update_events()) {
        is_quit = true;
      }
      os_ctx->update();
      this->update(dt);
      os_ctx->draw_begin();
      this->draw();
      os_ctx->draw_end();

      end_counter = begin_counter;
    }

    os_ctx->sleep(period_max);
  }
  this->stop();
}
} // namespace saura