7482a0d26d
Fixes #15834 ## Migration Guide The APIs of `Time`, `Timer` and `Stopwatch` have been cleaned up for consistency with each other and the standard library's `Duration` type. The following methods have been renamed: - `Stowatch::paused` -> `Stopwatch::is_paused` - `Time::elapsed_seconds` -> `Time::elasped_secs` (including `_f64` and `_wrapped` variants)
41 lines
1.3 KiB
Rust
41 lines
1.3 KiB
Rust
//! Shows how to create systems that run every fixed timestep, rather than every tick.
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use bevy::prelude::*;
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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_systems(Update, frame_update)
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// add our system to the fixed timestep schedule
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.add_systems(FixedUpdate, fixed_update)
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// configure our fixed timestep schedule to run twice a second
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.insert_resource(Time::<Fixed>::from_seconds(0.5))
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.run();
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}
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fn frame_update(mut last_time: Local<f32>, time: Res<Time>) {
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// Default `Time` is `Time<Virtual>` here
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info!(
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"time since last frame_update: {}",
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time.elapsed_secs() - *last_time
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);
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*last_time = time.elapsed_secs();
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}
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fn fixed_update(mut last_time: Local<f32>, time: Res<Time>, fixed_time: Res<Time<Fixed>>) {
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// Default `Time`is `Time<Fixed>` here
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info!(
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"time since last fixed_update: {}\n",
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time.elapsed_secs() - *last_time
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);
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info!("fixed timestep: {}\n", time.delta_secs());
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// If we want to see the overstep, we need to access `Time<Fixed>` specifically
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info!(
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"time accrued toward next fixed_update: {}\n",
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fixed_time.overstep().as_secs_f32()
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);
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*last_time = time.elapsed_secs();
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}
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