timer_class.cpp

#include "timer_class.h"
 
 
timer_class::timer_class()
{
}
 
 
timer_class::timer_class(const timer_class& other)
{
}
 
 
timer_class::~timer_class()
{
}
 
bool timer_class::Initialize()
{
    Logger::Get().Log("Initilazing timer class", __FILE__, __LINE__, Logger::LogLevel::Initialize);
 
    INT64 frequency;
 
 
    // Get the cycles per second speed for this system.
    QueryPerformanceFrequency((LARGE_INTEGER*)&frequency);
    if (frequency == 0)
    {
        Logger::Get().Log("QueryPerformanceFrequency failed", __FILE__, __LINE__, Logger::LogLevel::Error);
        return false;
    }
 
    // Store it in floating point.
    m_frequency = (float)frequency;
 
    // Get the initial start time.
    QueryPerformanceCounter((LARGE_INTEGER*)&m_startTime);
 
    Logger::Get().Log("Timer class initialized", __FILE__, __LINE__, Logger::LogLevel::Initialize);
 
    return true;
}
 
void timer_class::Frame()
{
    INT64 currentTime;
    INT64 elapsedTicks;
 
 
    // Query the current time.
    QueryPerformanceCounter((LARGE_INTEGER*)&currentTime);
 
    // Calculate the difference in time since the last time we queried for the current time.
    elapsedTicks = currentTime - m_startTime;
 
    // Calculate the frame time.
    m_frameTime = (float)elapsedTicks / m_frequency;
 
    // Restart the timer.
    m_startTime = currentTime;
 
    return;
}
 
float timer_class::GetTime()
{
    return m_frameTime;
}