cpp-game-engine/util/include/game/util/time.hpp

//
//  time.hpp
//  engine
//
//  Created by Sam Jaffe on 9/3/16.
//

#pragma once

#include <chrono>

namespace env::clock {
using clock_t = std::chrono::steady_clock;
using timestamp = std::chrono::time_point<clock_t>;
using duration = clock_t::duration;

struct tick {
  tick(timestamp prev) : now(clock_t::now()), since(now - prev) {}
  timestamp now;
  duration since;
};

inline timestamp now() { return clock_t::now(); }
template <typename T> T current_time() {
  return std::chrono::duration<T>(now().time_since_epoch()).count();
}
}

namespace env {
struct fps {
  static clock::duration const v24;
  static clock::duration const v30;
  static clock::duration const v60;
  static clock::duration const v120;
  static clock::duration const v144;
};
}