#include "SDL.h"
#include "classes.h"

Timer::Timer()
{
    startTicks = 0;
    pausedTicks = 0;
    paused = false;
    started = false;    
}

void Timer::start()
{
    started = true;
    
    paused = false;
    
    startTicks = SDL_GetTicks();    
}

void Timer::stop()
{
    started = false;

    paused = false;    
}

void Timer::pause()
{
    if( ( started == true ) && ( paused == false ) )
    {
        paused = true;
    
        pausedTicks = SDL_GetTicks() - startTicks;
    }
}

void Timer::unpause()
{
    if( paused == true )
    {
        paused = false;
    
        startTicks = SDL_GetTicks() - pausedTicks;
        
        pausedTicks = 0;
    }
}

int Timer::get_ticks()
{
    if( started == true )
    {
        if( paused == true )
        {
			return pausedTicks;
        }
        else
        {
            return SDL_GetTicks() - startTicks;
        }    
    }
    
    return 0;    
}

bool Timer::is_started()
{
    return started;    
}

bool Timer::is_paused()
{
    return paused;    
}