maplibre/raster/
populate_world_system.rs

1use std::{borrow::Cow, marker::PhantomData, rc::Rc};
2
3use crate::{
4    context::MapContext,
5    environment::Environment,
6    io::apc::{AsyncProcedureCall, Message},
7    kernel::Kernel,
8    raster::{
9        transferables::{LayerRaster, LayerRasterMissing, RasterTransferables},
10        RasterLayerData, RasterLayersDataComponent,
11    },
12    tcs::system::{System, SystemResult},
13};
14
15pub struct PopulateWorldSystem<E: Environment, T> {
16    kernel: Rc<Kernel<E>>,
17    phantom_t: PhantomData<T>,
18}
19
20impl<E: Environment, T> PopulateWorldSystem<E, T> {
21    pub fn new(kernel: &Rc<Kernel<E>>) -> Self {
22        Self {
23            kernel: kernel.clone(),
24            phantom_t: Default::default(),
25        }
26    }
27}
28
29impl<E: Environment, T: RasterTransferables> System for PopulateWorldSystem<E, T> {
30    fn name(&self) -> Cow<'static, str> {
31        "populate_world_system".into()
32    }
33
34    fn run(&mut self, MapContext { world, .. }: &mut MapContext) -> SystemResult {
35        for message in self.kernel.apc().receive(|message| {
36            message.has_tag(T::LayerRaster::message_tag())
37                || message.has_tag(T::LayerRasterMissing::message_tag())
38        }) {
39            let message: Message = message;
40            if message.has_tag(T::LayerRaster::message_tag()) {
41                let message = message.into_transferable::<T::LayerRaster>();
42                let Some(component) = world
43                    .tiles
44                    .query_mut::<&mut RasterLayersDataComponent>(message.coords())
45                else {
46                    continue;
47                };
48
49                component
50                    .layers
51                    .push(RasterLayerData::Available(message.to_layer()));
52            } else if message.has_tag(T::LayerRaster::message_tag()) {
53                let message = message.into_transferable::<T::LayerRasterMissing>();
54                let Some(component) = world
55                    .tiles
56                    .query_mut::<&mut RasterLayersDataComponent>(message.coords())
57                else {
58                    continue;
59                };
60
61                component
62                    .layers
63                    .push(RasterLayerData::Missing(message.to_layer()));
64            }
65        }
66
67        Ok(())
68    }
69}
maplibre/raster/populate_world_system.rs

maplibre/raster/
populate_world_system.rs
