v1.4.4

source/game/StarGameTimers.hpp

@@ -0,0 +1,77 @@
+#ifndef STAR_GAME_TIMERS_HPP
+#define STAR_GAME_TIMERS_HPP
+
+#include "StarGameTypes.hpp"
+#include "StarJson.hpp"
+
+namespace Star {
+
+struct GameTimer {
+  GameTimer();
+  explicit GameTimer(float time);
+
+  float time;
+  float timer;
+
+  bool tick(float dt = WorldTimestep); // returns true if time is up
+  bool wrapTick(float dt = WorldTimestep); // auto resets
+  void reset();
+  void setDone();
+  void invert();
+
+  bool ready() const;
+  float percent() const;
+};
+
+DataStream& operator>>(DataStream& ds, GameTimer& gt);
+DataStream& operator<<(DataStream& ds, GameTimer const& gt);
+
+struct SlidingWindow {
+  SlidingWindow();
+  SlidingWindow(float windowSize, size_t resolution, float initialValue);
+
+  GameTimer sampleTimer;
+  float windowSize;
+  size_t resolution;
+
+  float currentMin;
+  float currentMax;
+  float currentAverage;
+
+  size_t currentIndex;
+  std::vector<float> window;
+
+  void reset(float initialValue);
+  void update(function<float()> sampleFunction);
+  void update(float newValue);
+  void processUpdate(float newValue);
+
+  float min();
+  float max();
+  float average();
+};
+
+// Keeps long term track of elapsed time based on epochTime.
+class EpochTimer {
+public:
+  EpochTimer();
+  explicit EpochTimer(Json json);
+
+  Json toJson() const;
+
+  void update(double newEpochTime);
+
+  double elapsedTime() const;
+  void setElapsedTime(double elapsedTime);
+
+  friend DataStream& operator>>(DataStream& ds, EpochTimer& et);
+  friend DataStream& operator<<(DataStream& ds, EpochTimer const& et);
+
+private:
+  Maybe<double> m_lastSeenEpochTime;
+  double m_elapsedTime;
+};
+
+}
+
+#endif