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/*
* Copyright (C) Oscar Shrimpton 2020
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
use std::time::Instant;
#[derive(Debug, Clone)]
pub struct Timing {
pub delta_time: f32,
pub(crate) last_frame_start: Instant,
}
impl Default for Timing {
fn default() -> Self {
Timing {
delta_time: 0.0,
last_frame_start: Instant::now(),
}
}
}
#[system]
pub fn update_deltatime(#[resource] timing: &mut Timing) {
let now = Instant::now();
timing.delta_time = now.duration_since(timing.last_frame_start).as_secs_f32();
timing.last_frame_start = now;
}
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