www.pudn.com > snow.rar > Timer.h

// a very simple timer class for animations 
#ifndef TIMER_H_INCLUDED 
#define TIMER_H_INCLUDED 
#include  
#include  
 
class CTimer 
{ 
public: 
  CTimer() {  
    // register timer by adding it to static vector 
    m_Timers.push_back(this); 
    Stop();  
    char buf[256];  
    _snprintf(buf, sizeof(buf),  
      "Timer created! Total Timers: %d\n", m_Timers.size()); 
    OutputDebugString(buf); 
  } 
  virtual ~CTimer() {  
    // delete timer from vector 
    for (std::vector::iterator i = m_Timers.begin(); 
         i != m_Timers.end(); i++) { 
      if ((*i) == this) { 
        m_Timers.erase(i); 
        char buf[256];  
        _snprintf(buf, sizeof(buf),  
          "Timer deleted! Total Timers: %d\n", m_Timers.size()); 
        OutputDebugString(buf); 
        break; 
      } 
    } 
  } 
   
  void Start() { m_bIsRunning = true;  } 
  void Pause() { m_bIsRunning = false; } 
  void Stop()  { Pause(); m_fTime = 0; } 
  void Begin() { Stop(); Start(); } 
  void BeginWithDelay(float fDelay) { m_fTime = -fDelay; Start(); } 
     
  void SetTime(float t) { m_fTime = t; } 
  float GetTime()       { return(m_fTime); } 
 
  bool IsRunning() { return(m_bIsRunning); } 
   
  void Update(float fElapsedTime) { 
    if (m_bIsRunning) { 
      m_fTime += fElapsedTime; 
    } 
  } 
 
  // these are here so you can call 1 function to update all timers 
  static std::vector m_Timers; 
  static void UpdateAll(float fElapsedTime) { 
    for (std::vector::iterator i = m_Timers.begin(); 
         i != m_Timers.end(); i++) { 
      (*i)->Update(fElapsedTime); 
    } 
  } 
 
protected: 
  bool m_bIsRunning; 
  float m_fTime; 
}; 
 
#endif