dces 0.1.6

DCES entity component system
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
38
39
40
41
42



use dces::prelude::*;

struct Counter(u32);

struct UpdateSystem;
impl System<VecEntityContainer> for UpdateSystem {
    fn run(&self, entities: &VecEntityContainer, ecm: &mut EntityComponentManager) {
        for entity in &entities.inner {
            if let Ok(comp) = ecm.borrow_mut_component::<Counter>(*entity) {
                comp.0 += 1;
            }
        }
    }
}

struct TestUpdateSystem(u32);
impl System<VecEntityContainer> for TestUpdateSystem {
    fn run(&self, entities: &VecEntityContainer, ecm: &mut EntityComponentManager) {
        for entity in &entities.inner {
            if let Ok(comp) = ecm.borrow_mut_component::<Counter>(*entity) {
                assert_eq!(comp.0, self.0);
            }
        }
    }
}

#[test]
fn test_update() {
    let mut world = World::<VecEntityContainer>::new();

    world.create_entity().with(Counter(0)).build();
    world.create_entity().with(Counter(0)).build();

    world.create_system(UpdateSystem).with_priority(0).build();
    world
        .create_system(TestUpdateSystem(1))
        .with_priority(1)
        .build();
    world.run();
}