fennel_engine/ecs/
scene.rs

1use specs::{Entities, Join, LazyUpdate, Read, ReadExpect, ReadStorage, System};
2
3use crate::{
4    app::App,
5    ecs::sprite::HostPtr,
6    scenes::Scene,
7};
8
9/// Scene drawing system
10pub struct SceneSystem;
11
12impl<'a> System<'a> for SceneSystem {
13    type SystemData = (ReadStorage<'a, Scene>, ReadExpect<'a, HostPtr>, Entities<'a>, Read<'a, LazyUpdate>);
14
15    fn run(&mut self, (scenes, host_ptr, entities, lazy): Self::SystemData) {
16        let runtime: &mut App = unsafe { &mut *host_ptr.0 };
17        for scene in scenes.join().filter(|s| s.name == runtime.active_scene.name) {
18            if !runtime.active_scene.loaded {
19                for ent_def in &scene.entities {
20                    for component in &ent_def.components {
21                        println!("loading component {} with parameters {:?}", component.id, component.config);
22                        let entity = entities.create();
23                        let factory = runtime.component_registry.get(&component.id)
24                            .expect("no factory found");
25                        factory.insert_lazy(&lazy, entity, &component.config);
26                    }
27                }
28                runtime.active_scene.loaded = true;
29            }
30        }
31    }
32}
fennel_engine/ecs/scene.rs

fennel_engine/ecs/
scene.rs
