bevy_fsc_point_cloud/
playback.rs

1use bevy::{prelude::*, utils::HashMap};
2
3use crate::PointCloudAsset;
4
5#[derive(Resource, Clone, Default)]
6pub struct PointCloudPlaybackControls {
7    pub(crate) controls: HashMap<Handle<PointCloudAsset>, PlaybackControls>,
8}
9
10#[derive(Clone, Copy)]
11pub struct PlaybackControls {
12    pub time: f32,
13    pub playing: bool,
14    pub speed: f32,
15}
16
17impl Default for PlaybackControls {
18    fn default() -> Self {
19        Self {
20            time: 0.,
21            playing: false,
22            speed: 1.,
23        }
24    }
25}
26
27impl PointCloudPlaybackControls {
28    pub fn controls(&self, handle: &Handle<PointCloudAsset>) -> PlaybackControls {
29        self.controls.get(handle).copied().unwrap_or_default()
30    }
31
32    pub fn controls_mut(&mut self, handle: &Handle<PointCloudAsset>) -> &mut PlaybackControls {
33        self.controls.entry(handle.clone_weak()).or_default()
34    }
35
36    pub fn playback_system(
37        mut controls: ResMut<Self>,
38        time: Res<Time>,
39        assets: Res<Assets<PointCloudAsset>>,
40    ) {
41        let mut changed = false;
42        let len = controls.controls.len();
43
44        controls
45            .bypass_change_detection()
46            .controls
47            .retain(|handle, controls| {
48                let Some(animation_duration) = assets
49                    .get(handle)
50                    .and_then(|asset| asset.animation_duration())
51                else {
52                    // remove if asset doesn't exist or isn't animated
53                    return false;
54                };
55
56                if controls.playing {
57                    changed |= true;
58                    controls.time += controls.speed * time.delta_seconds();
59                    controls.time = controls.time.rem_euclid(animation_duration);
60                }
61
62                true
63            });
64
65        if changed || controls.controls.len() != len {
66            controls.set_changed();
67        }
68    }
69}
bevy_fsc_point_cloud/playback.rs

bevy_fsc_point_cloud/
playback.rs
