timer.cpp

   1 #include "timer.h"
   2 #include "SDL/SDL.h"
   3 #include "SDL/SDL_opengl.h"
   4
   5
   6 Timer::Timer()
   7 {
   8     //Initialize the variables
   9     startTicks = 0;
  10     pausedTicks = 0;
  11     paused = false;
  12     started = false;
  13 }
  14
  15 void Timer::start()
  16 {
  17     //Start the timer
  18     started = true;
  19
  20     //Unpause the timer
  21     paused = false;
  22
  23     //Get the current clock time
  24     startTicks = SDL_GetTicks();
  25 }
  26
  27 void Timer::stop()
  28 {
  29     //Stop the timer
  30     started = false;
  31
  32     //Unpause the timer
  33     paused = false;
  34 }
  35
  36 void Timer::pause()
  37 {
  38     //If the timer is running and isn't already paused
  39     if( ( started == true ) && ( paused == false ) )
  40     {
  41         //Pause the timer
  42         paused = true;
  43
  44         //Calculate the paused ticks
  45         pausedTicks = SDL_GetTicks() - startTicks;
  46     }
  47 }
  48
  49 void Timer::unpause()
  50 {
  51     //If the timer is paused
  52     if( paused == true )
  53     {
  54         //Unpause the timer
  55         paused = false;
  56
  57         //Reset the starting ticks
  58         startTicks = SDL_GetTicks() - pausedTicks;
  59
  60         //Reset the paused ticks
  61         pausedTicks = 0;
  62     }
  63 }
  64
  65 int Timer::get_ticks()
  66 {
  67     //If the timer is running
  68     if( started == true )
  69     {
  70         //If the timer is paused
  71         if( paused == true )
  72         {
  73             //Return the number of ticks when the timer was paused
  74             return pausedTicks;
  75         }
  76         else
  77         {
  78             //Return the current time minus the start time
  79             return SDL_GetTicks() - startTicks;
  80         }
  81     }
  82
  83     //If the timer isn't running
  84     return 0;
  85 }
  86
  87 bool Timer::is_started()
  88 {
  89     return started;
  90 }
  91
  92 bool Timer::is_paused()
  93 {
  94     return paused;
  95 }
  96