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
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
use std::any::type_name;
use std::marker::PhantomData;
use crate::component::{
Component,
Handle as ComponentHandle,
HandleFromEntityComponentRef,
HandleMut as ComponentHandleMut,
};
use crate::query::{
TermWithField,
TermWithoutField,
TermsBuilder,
TermsBuilderInterface,
};
use crate::uid::With as WithUid;
pub struct With<WithUidT>
where
WithUidT: WithUid,
{
_pd: PhantomData<WithUidT>,
}
impl<WithUidT> TermWithoutField for With<WithUidT>
where
WithUidT: WithUid,
{
fn apply_to_terms_builder<const MAX_TERM_CNT: usize>(
terms_builder: &mut TermsBuilder<MAX_TERM_CNT>,
)
{
terms_builder.with::<WithUidT>();
}
}
pub struct Without<WithUidT>
where
WithUidT: WithUid,
{
_pd: PhantomData<WithUidT>,
}
impl<WithUidT> TermWithoutField for Without<WithUidT>
where
WithUidT: WithUid,
{
fn apply_to_terms_builder<const MAX_TERM_CNT: usize>(
terms_builder: &mut TermsBuilder<MAX_TERM_CNT>,
)
{
terms_builder.without::<WithUidT>();
}
}
impl<ComponentT: Component> TermWithField for Option<&ComponentT>
{
type Field<'a> = Option<ComponentHandle<'a, ComponentT>>;
fn apply_to_terms_builder<const MAX_TERM_CNT: usize>(
_terms_builder: &mut TermsBuilder<MAX_TERM_CNT>,
)
{
}
fn get_field<'world>(
entity_handle: &crate::entity::Handle<'world>,
world: &'world crate::World,
) -> Self::Field<'world>
{
Some(
ComponentHandle::<'world, ComponentT>::from_entity_component_ref(
Some(
entity_handle
.get_matching_components(ComponentT::id())
.next()?,
),
world,
)
.unwrap_or_else(|err| {
panic!(
"Creating handle to component {} failed: {err}",
type_name::<ComponentT>()
);
}),
)
}
}
impl<ComponentT: Component> TermWithField for Option<&mut ComponentT>
{
type Field<'a> = Option<ComponentHandleMut<'a, ComponentT>>;
fn apply_to_terms_builder<const MAX_TERM_CNT: usize>(
_terms_builder: &mut TermsBuilder<MAX_TERM_CNT>,
)
{
}
fn get_field<'world>(
entity_handle: &crate::entity::Handle<'world>,
world: &'world crate::World,
) -> Self::Field<'world>
{
Some(
ComponentHandleMut::<'world, ComponentT>::from_entity_component_ref(
Some(
entity_handle
.get_matching_components(ComponentT::id())
.next()?,
),
world,
)
.unwrap_or_else(|err| {
panic!(
"Creating handle to component {} failed: {err}",
type_name::<ComponentT>()
);
}),
)
}
}
|
