Sienna Meridian Satterwhite
f3f8094530
Closes #6, #7, #8, #9, #10 Refs #2, #122 Vendored bevy_render, bevy_core_pipeline, and bevy_pbr from Bevy v0.17.2 (commit 566358363126dd69f6e457e47f306c68f8041d2a) into libmarathon. - ~51K LOC vendored to crates/libmarathon/src/render/ - Merged bevy_render_macros into crates/macros/ - Fixed 773→0 compilation errors - Updated dependencies (encase 0.10→0.11, added 4 new deps) - Removed bevy_render/pbr/core_pipeline from app Cargo features All builds passing, macOS smoke test successful. Signed-off-by: Sienna Meridian Satterwhite <sienna@r3t.io>
71 lines
2.3 KiB
Rust
71 lines
2.3 KiB
Rust
use core::marker::PhantomData;
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use bevy_app::{App, Plugin};
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use bevy_ecs::prelude::*;
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pub use macros::ExtractResource;
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use bevy_utils::once;
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use crate::render::{Extract, ExtractSchedule, RenderApp};
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/// Describes how a resource gets extracted for rendering.
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///
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/// Therefore the resource is transferred from the "main world" into the "render world"
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/// in the [`ExtractSchedule`] step.
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pub trait ExtractResource: Resource {
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type Source: Resource;
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/// Defines how the resource is transferred into the "render world".
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fn extract_resource(source: &Self::Source) -> Self;
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}
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/// This plugin extracts the resources into the "render world".
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///
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/// Therefore it sets up the[`ExtractSchedule`] step
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/// for the specified [`Resource`].
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pub struct ExtractResourcePlugin<R: ExtractResource>(PhantomData<R>);
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impl<R: ExtractResource> Default for ExtractResourcePlugin<R> {
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fn default() -> Self {
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Self(PhantomData)
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}
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}
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impl<R: ExtractResource> Plugin for ExtractResourcePlugin<R> {
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fn build(&self, app: &mut App) {
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if let Some(render_app) = app.get_sub_app_mut(RenderApp) {
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render_app.add_systems(ExtractSchedule, extract_resource::<R>);
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} else {
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once!(tracing::error!(
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"Render app did not exist when trying to add `extract_resource` for <{}>.",
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core::any::type_name::<R>()
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));
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}
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}
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}
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/// This system extracts the resource of the corresponding [`Resource`] type
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pub fn extract_resource<R: ExtractResource>(
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mut commands: Commands,
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main_resource: Extract<Option<Res<R::Source>>>,
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target_resource: Option<ResMut<R>>,
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) {
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if let Some(main_resource) = main_resource.as_ref() {
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if let Some(mut target_resource) = target_resource {
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if main_resource.is_changed() {
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*target_resource = R::extract_resource(main_resource);
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}
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} else {
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#[cfg(debug_assertions)]
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if !main_resource.is_added() {
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once!(tracing::warn!(
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"Removing resource {} from render world not expected, adding using `Commands`.
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This may decrease performance",
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core::any::type_name::<R>()
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));
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}
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commands.insert_resource(R::extract_resource(main_resource));
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}
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}
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}
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