time.c

Using Banjo's time functions for elapsed time tracking and sleeping.

Using Banjo's time functions for elapsed time tracking and sleeping.This demonstrates bj_run_time() for measuring elapsed time and bj_sleep() for pausing execution. These are essential for frame timing, animations, and timed events.

It is a plain console program with its own loop rather than an App (bj_run_app) program: there is no window or event handling to drive, so the bj_sleep() that paces this loop is exactly what such a program should use.

 
#include <banjo/log.h>
#include <banjo/main.h>
#include <banjo/system.h>
#include <banjo/time.h>
 
int main(int argc, char* argv[]) {
    (void)argc; (void)argv;
 
    // BJ_NO_SYSTEM means we don't need video or audio - just basic functions
    // like time and logging work without any subsystem.
    if (!bj_begin(BJ_NO_SYSTEM, 0)) {
        return 1;
    }
 
    // Run for about 3 seconds, printing the elapsed time each iteration.
    double elapsed = 0.0;
    while (elapsed < 3.0) {
        // bj_run_time() returns the number of seconds (as a double) since the
        // program started. Useful for animations, timeouts, and delta time.
        elapsed = bj_run_time();
        bj_trace("- %lf", elapsed);
 
        // bj_sleep() pauses execution for the given number of milliseconds,
        // which paces this loop and keeps it off the CPU between prints.
        bj_sleep(300);
    }
 
    bj_end();
    return 0;
}