flatbox_core 0.1.0

Provides core functionality for Flatbox engine
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

use std::time::{Instant, Duration};

pub mod timer;

pub struct Time {
    startup_time: Instant,
    latest_update: Option<Instant>,
    delta_time: Duration,
}

impl Default for Time {
    fn default() -> Self {
        Time {
            startup_time: Instant::now(),
            latest_update: None,
            delta_time: Duration::ZERO,
        }
    }
}

impl Time {
    pub fn new() -> Self {
        Time::default()
    }
    
    pub fn delta_time(&self) -> Duration {
        self.delta_time
    }
    
    pub fn update(&mut self){
        let now = Instant::now();
        let delta = now - self.latest_update.unwrap_or(self.startup_time);
        
        self.latest_update = Some(now);
        self.delta_time = delta;
    }
}