wecs_core/resource/
param.rs

1use std::{
2    marker::PhantomData,
3    ops::{Deref, DerefMut},
4};
5
6use crate::system::SystemParam;
7
8use super::Resource;
9
10pub struct Res<'w, R>
11where
12    R: Resource + 'static,
13{
14    resource: &'w R,
15    // _phantom_data: PhantomData<&'w R>,
16}
17
18impl<'w, R> Deref for Res<'w, R>
19where
20    R: Resource + 'static,
21{
22    type Target = R;
23
24    fn deref(&self) -> &Self::Target {
25        &self.resource
26    }
27}
28
29impl<'w, R> SystemParam for Res<'w, R>
30where
31    R: Resource + 'static,
32{
33    type Item<'world> = Res<'world, R>;
34
35    fn get_param<'world>(world: crate::world::UnsafeWorldCell<'world>) -> Self::Item<'world> {
36        Res {
37            resource: world.world().get_resource::<R>().unwrap(),
38            // _phantom_data: PhantomData,
39        }
40    }
41}
42
43pub struct ResMut<'w, R>
44where
45    R: Resource + 'static,
46{
47    resource: &'w mut R,
48    // _phantom_data: PhantomData<&'w R>,
49}
50
51impl<'w, R> Deref for ResMut<'w, R>
52where
53    R: Resource + 'static,
54{
55    type Target = R;
56
57    fn deref(&self) -> &Self::Target {
58        &self.resource
59    }
60}
61
62impl<'w, R> DerefMut for ResMut<'w, R>
63where
64    R: Resource + 'static,
65{
66    fn deref_mut(&mut self) -> &mut Self::Target {
67        &mut self.resource
68    }
69}
70
71impl<'w, R> SystemParam for ResMut<'w, R>
72where
73    R: Resource + 'static,
74{
75    type Item<'world> = ResMut<'world, R>;
76
77    fn get_param<'world>(world: crate::world::UnsafeWorldCell<'world>) -> Self::Item<'world> {
78        ResMut {
79            resource: world.world_mut().get_resource_mut::<R>().unwrap(),
80            // _phantom_data: PhantomData,
81        }
82    }
83}
wecs_core/resource/param.rs

wecs_core/resource/
param.rs
