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use log::*;
use crate::*;
pub struct FpsLogger {
start_time: f64,
prev_time: f64,
seconds_between_logs: f64,
next_log_time: f64,
total_frames: i64,
frames: i64,
last_fps: i32,
stopwatch: Stopwatch,
}
impl FpsLogger {
pub fn new(seconds_between_logs: f64) -> Self {
let stopwatch = Stopwatch::new();
let start_time = stopwatch.get_time();
Self {
start_time,
prev_time: start_time,
seconds_between_logs,
next_log_time: seconds_between_logs,
total_frames: 0,
frames: 0,
last_fps: 0,
stopwatch,
}
}
pub fn update(&mut self) {
self.frames += 1;
self.total_frames += 1;
let time = self.stopwatch.get_time();
if time - self.start_time >= self.next_log_time {
let fps = (self.frames as f64 / (time - self.prev_time)).floor() as i64;
self.last_fps = fps as i32;
info!(
"FPS: {}; ms/frame: {:.2}; average FPS: {}",
fps,
(time - self.prev_time) * 1000.0 / self.frames as f64,
(self.total_frames as f64 / (time - self.start_time)).floor() as i64
);
self.prev_time = time;
self.next_log_time += self.seconds_between_logs;
self.frames = 0;
}
}
pub fn last_fps(&self) -> i32 {
self.last_fps
}
}