#include "periodic_updates.hpp"

#include <ctime>
#include <GL/glut.h>

static Ball* _ball = nullptr;
static clock_t _last_time = 0;

double time_of_clocks(clock_t time) {
    return ((double)time) / ((double)CLOCKS_PER_SEC);
}

void init_periodic_static(Ball* ball) {
    _last_time = clock();
    _ball = ball;
}

void periodic_update() {
    clock_t now = clock();
    _ball->update_pos(time_of_clocks(now - _last_time));
    _last_time = now;

    glutPostRedisplay();
}