mirror of
https://github.com/bevyengine/bevy
synced 2025-02-16 22:18:33 +00:00
11b41206eb
This updates the `pipelined-rendering` branch to use the latest `bevy_ecs` from `main`. This accomplishes a couple of goals: 1. prepares for upcoming `custom-shaders` branch changes, which were what drove many of the recent bevy_ecs changes on `main` 2. prepares for the soon-to-happen merge of `pipelined-rendering` into `main`. By including bevy_ecs changes now, we make that merge simpler / easier to review. I split this up into 3 commits: 1. **add upstream bevy_ecs**: please don't bother reviewing this content. it has already received thorough review on `main` and is a literal copy/paste of the relevant folders (the old folders were deleted so the directories are literally exactly the same as `main`). 2. **support manual buffer application in stages**: this is used to enable the Extract step. we've already reviewed this once on the `pipelined-rendering` branch, but its worth looking at one more time in the new context of (1). 3. **support manual archetype updates in QueryState**: same situation as (2).
50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
use bevy::{
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core::{FixedTimestep, FixedTimesteps},
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prelude::*,
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};
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const LABEL: &str = "my_fixed_timestep";
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#[derive(Debug, Hash, PartialEq, Eq, Clone, StageLabel)]
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struct FixedUpdateStage;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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// this system will run once every update (it should match your screen's refresh rate)
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.add_system(frame_update)
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// add a new stage that runs twice a second
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.add_stage_after(
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CoreStage::Update,
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FixedUpdateStage,
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SystemStage::parallel()
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.with_run_criteria(
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FixedTimestep::step(0.5)
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// labels are optional. they provide a way to access the current
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// FixedTimestep state from within a system
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.with_label(LABEL),
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)
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.with_system(fixed_update),
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)
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.run();
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}
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fn frame_update(mut last_time: Local<f64>, time: Res<Time>) {
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info!("update: {}", time.seconds_since_startup() - *last_time);
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*last_time = time.seconds_since_startup();
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}
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fn fixed_update(mut last_time: Local<f64>, time: Res<Time>, fixed_timesteps: Res<FixedTimesteps>) {
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info!(
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"fixed_update: {}",
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time.seconds_since_startup() - *last_time,
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);
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let fixed_timestep = fixed_timesteps.get(LABEL).unwrap();
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info!(
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" overstep_percentage: {}",
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fixed_timestep.overstep_percentage()
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);
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*last_time = time.seconds_since_startup();
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}
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