devices/Timer.h

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#ifndef SDL_DEVICES_TIMER_H
#define SDL_DEVICES_TIMER_H

#include <stdexcept>
#include <string>
#include <iostream>

#include <SDL.h>

#include "sdlpp/subsystem/Subsystem.h"

namespace sdl {
namespace devices {
    using namespace std;
    using namespace misc;

    class Timer {
        public:
            typedef unsigned int (*Callback) (unsigned int interval, void* param);

            Timer (unsigned int interval, Callback callback, void* param) 
              : id_ (add (interval, callback, param)) {
            };

            ~Timer () { 
                //log error if unable to remove timer.
                if (SDL_RemoveTimer (id_) == SDL_FALSE)
                    cout << "Failed to remove timer " << id_ << endl;
            };

        private:
            Timer (const Timer& rhs);

            Timer& operator= (const Timer& rhs);

            SDL_TimerID add (unsigned int interval, Callback callback, void* param) {
                subsystem::Timer::instance ();
                SDL_TimerID id = SDL_AddTimer (interval, callback, param);
                if (id == NULL)
                    throw runtime_error ("Failed to add timer.");
                return id;
            };

            SDL_TimerID id_;
    }; //Timer
}; //devices
}; //sdl

#endif //SDL_DEVICES_TIMER_H