aalo 0.3.0

aka bevy-inspector-haalka, a bevy_ui-native inspector for Bevy
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
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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165

use std::any::TypeId;

use bevy_asset::{ReflectAsset, UntypedAssetId};
use bevy_ecs::{component::ComponentId, prelude::*};
use bevy_reflect::{ReflectFromPtr, prelude::*};

pub fn reflect_component(world: &mut World, entity: Entity, component: ComponentId) -> Option<&dyn Reflect> {
    if let Some(((entity, type_id), type_registry)) = world
        .get_entity(entity)
        .ok()
        .zip(world.components().get_info(component).and_then(|info| info.type_id()))
        .zip(
            world
                .get_resource::<AppTypeRegistry>()
                .map(|type_registry| type_registry.read()),
        )
        && let Some((component_ptr, type_registration)) =
            entity.get_by_id(component).ok().zip(type_registry.get(type_id))
        && let Some(reflect_from_ptr) = type_registration.data::<ReflectFromPtr>()
    {
        // SAFETY: same `ComponentId` is used to fetch component data and type id
        return Some(unsafe { reflect_from_ptr.as_reflect(component_ptr) });
    }
    None
}

pub fn reflect_component_mut<'w>(
    // need an `EntityWorldMut` here because the mutable component pointer is tied to the lifetime of the
    // `EntityWorldMut`
    entity: &'w mut EntityWorldMut,
    component: ComponentId,
) -> Option<Mut<'w, dyn Reflect>> {
    if let Some((type_id, type_registry)) = entity
        .world_scope(|world| world.components().get_info(component).and_then(|info| info.type_id()))
        .zip(entity.world_scope(|world| world.get_resource::<AppTypeRegistry>().cloned()))
        && let Some((component_ptr, type_registration)) = entity
            .get_mut_by_id(component)
            .ok()
            .zip(type_registry.read().get(type_id))
        && let Some(reflect_from_ptr) = type_registration.data::<ReflectFromPtr>()
    {
        return Some(component_ptr.map_unchanged(|ptr| {
            // SAFETY: same `ComponentId` is used to fetch component data and type id
            unsafe { reflect_from_ptr.as_reflect_mut(ptr) }
        }));
    }
    None
}

pub fn with_reflect_component<T>(
    world: &mut World,
    entity: Entity,
    component: ComponentId,
    f: impl FnOnce(&dyn Reflect) -> T,
) -> Option<T> {
    reflect_component(world, entity, component).map(f)
}

pub fn with_reflect_component_mut<T>(
    world: &mut World,
    entity: Entity,
    component: ComponentId,
    f: impl FnOnce(&mut dyn Reflect) -> T,
) -> Option<T> {
    world.get_entity_mut(entity).ok().and_then(|ref mut entity| {
        reflect_component_mut(entity, component).map(|mut reflect| f(reflect.as_reflect_mut()))
    })
}

pub fn reflect_resource(world: &mut World, component: ComponentId) -> Option<&dyn Reflect> {
    if let Some((type_id, type_registry)) = world
        .components()
        .get_info(component)
        .and_then(|info| info.type_id())
        .zip(
            world
                .get_resource::<AppTypeRegistry>()
                .map(|type_registry| type_registry.read()),
        )
        && let Some((component_ptr, type_registration)) =
            world.get_resource_by_id(component).zip(type_registry.get(type_id))
        && let Some(reflect_from_ptr) = type_registration.data::<ReflectFromPtr>()
    {
        // SAFETY: same `ComponentId` is used to fetch component data and type id
        return Some(unsafe { reflect_from_ptr.as_reflect(component_ptr) });
    }
    None
}

pub fn reflect_resource_mut<'w>(world: &'w mut World, component: ComponentId) -> Option<Mut<'w, dyn Reflect>> {
    if let Some((type_id, type_registry)) = world
        .components()
        .get_info(component)
        .and_then(|info| info.type_id())
        .zip(world.get_resource::<AppTypeRegistry>().cloned())
        && let Some((resource_ptr, type_registration)) = world
            .get_resource_mut_by_id(component)
            .zip(type_registry.read().get(type_id))
        && let Some(reflect_from_ptr) = type_registration.data::<ReflectFromPtr>()
    {
        return Some(
            resource_ptr
                // SAFETY: same `ComponentId` is used to fetch component data and type id
                .map_unchanged(|ptr| unsafe { reflect_from_ptr.as_reflect_mut(ptr) }),
        );
    };
    None
}

pub fn with_reflect_resource<T>(
    world: &mut World,
    component: ComponentId,
    f: impl FnOnce(&dyn Reflect) -> T,
) -> Option<T> {
    reflect_resource(world, component).map(f)
}

pub fn with_reflect_resource_mut<T>(
    world: &mut World,
    component: ComponentId,
    f: impl FnOnce(&mut dyn Reflect) -> T,
) -> Option<T> {
    reflect_resource_mut(world, component).map(|mut reflect| f(reflect.as_reflect_mut()))
}

pub fn reflect_asset(world: &mut World, asset: TypeId, handle: UntypedAssetId) -> Option<&dyn Reflect> {
    if let Some(type_registry) = world
        .get_resource::<AppTypeRegistry>()
        .map(|type_registry| type_registry.read())
        && let Some(type_registration) = type_registry.get(asset)
        && let Some(reflect_asset) = type_registration.data::<ReflectAsset>()
        && let Some(reflect) = reflect_asset.get(world, handle)
    {
        return Some(reflect);
    }
    None
}

pub fn reflect_asset_mut(world: &mut World, asset: TypeId, handle: UntypedAssetId) -> Option<&mut dyn Reflect> {
    if let Some(type_registry) = world.get_resource::<AppTypeRegistry>().cloned()
        && let Some(registration) = type_registry.read().get(asset)
        && let Some(reflect_asset) = registration.data::<ReflectAsset>()
    {
        return reflect_asset.get_mut(world, handle);
    }
    None
}

pub fn with_reflect_asset<T>(
    world: &mut World,
    asset: TypeId,
    handle: UntypedAssetId,
    f: impl FnOnce(&dyn Reflect) -> T,
) -> Option<T> {
    reflect_asset(world, asset, handle).map(f)
}

pub fn with_reflect_asset_mut<T>(
    world: &mut World,
    asset: TypeId,
    handle: UntypedAssetId,
    f: impl FnOnce(&mut dyn Reflect) -> T,
) -> Option<T> {
    reflect_asset_mut(world, asset, handle).map(f)
}