50 lines
1.6 KiB
Rust
50 lines
1.6 KiB
Rust
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use std::{any::TypeId, cell::{Ref, RefMut}, ptr::NonNull};
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use lyra_ecs::{World, ResourceObject};
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use crate::{Reflect, FromType};
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#[derive(Clone)]
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pub struct ReflectedResource {
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pub type_id: TypeId,
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fn_reflect: for<'a> fn (world: &'a World) -> Option<Ref<'a, dyn Reflect>>,
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fn_reflect_mut: for<'a> fn (world: &'a mut World) -> Option<RefMut<'a, dyn Reflect>>,
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fn_reflect_ptr: fn (world: &mut World) -> Option<NonNull<u8>>,
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}
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impl ReflectedResource {
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/// Retrieves the reflected resource from the world.
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pub fn reflect<'a>(&self, world: &'a World) -> Option<Ref<'a, dyn Reflect>> {
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(self.fn_reflect)(world)
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}
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/// Retrieves a mutable reflected resource from the world.
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pub fn reflect_mut<'a>(&self, world: &'a mut World) -> Option<RefMut<'a, dyn Reflect>> {
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(self.fn_reflect_mut)(world)
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}
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pub fn reflect_ptr(&self, world: &mut World) -> Option<NonNull<u8>> {
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(self.fn_reflect_ptr)(world)
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}
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}
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impl<T: ResourceObject + Reflect> FromType<T> for ReflectedResource {
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fn from_type() -> Self {
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Self {
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type_id: TypeId::of::<T>(),
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fn_reflect: |world: &World| {
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world.try_get_resource::<T>()
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.map(|r| r as Ref<dyn Reflect>)
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},
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fn_reflect_mut: |world: &mut World| {
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world.try_get_resource_mut::<T>()
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.map(|r| r as RefMut<dyn Reflect>)
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},
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fn_reflect_ptr: |world: &mut World| unsafe {
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world.try_get_resource_ptr::<T>()
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.map(|ptr| ptr.cast::<u8>())
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},
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}
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}
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}
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