simple/
simple.rs

1use rust_rocket::simple::{Event, Rocket};
2use std::{
3    thread,
4    time::{Duration, Instant},
5};
6
7/// Time source.
8///
9/// In a full demo, this represents your music player, but this type only
10/// implements the necessary controls and timing functionality without audio.
11struct TimeSource {
12    start: Instant,
13    offset: Duration,
14    paused: bool,
15}
16
17impl TimeSource {
18    pub fn new() -> Self {
19        Self {
20            start: Instant::now(),
21            offset: Duration::from_secs(0),
22            paused: false,
23        }
24    }
25
26    pub fn get_time(&self) -> Duration {
27        if self.paused {
28            self.offset
29        } else {
30            self.start.elapsed() + self.offset
31        }
32    }
33
34    pub fn pause(&mut self, state: bool) {
35        self.offset = self.get_time();
36        self.start = Instant::now();
37        self.paused = state;
38    }
39
40    pub fn seek(&mut self, to: Duration) {
41        self.offset = to;
42        self.start = Instant::now();
43    }
44}
45
46fn main() {
47    let mut rocket = Rocket::new("tracks.bin", 60.).unwrap();
48    let mut time_source = TimeSource::new();
49    let mut previous_print_time = Duration::ZERO;
50
51    'main: loop {
52        // <Handle other event sources such as SDL or winit here>
53
54        // Handle events from the rocket tracker
55        while let Some(event) = rocket.poll_events().ok().flatten() {
56            match event {
57                Event::Seek(to) => time_source.seek(to),
58                Event::Pause(state) => time_source.pause(state),
59                Event::NotConnected =>
60                /* Alternatively: break the loop here and keep rendering frames */
61                {
62                    std::thread::sleep(Duration::from_millis(10));
63                    continue 'main;
64                }
65            }
66        }
67
68        // Get current frame's time and keep the tracker updated
69        let time = time_source.get_time();
70        rocket.set_time(&time);
71
72        // <In a full demo you would render a frame here>
73
74        // Filter redundant output
75        if time != previous_print_time {
76            println!("{:?}: test = {}", time, rocket.get_value("test"));
77        }
78        previous_print_time = time;
79        thread::sleep(Duration::from_millis(10));
80    }
81}
simple/simple.rs

simple/
simple.rs
