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Add paused run condition (#11313)
# Objective - It is common to run a system only when the clock is paused or not paused, but this run condition doesn't exist. ## Solution - Add the "paused" run condition. --- ## Changelog - Systems can now be scheduled to run only if the clock is paused or not using `.run_if(paused())` or `.run_if(not(paused()))`. --------- Co-authored-by: radiish <cb.setho@gmail.com>
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1 changed files with 36 additions and 2 deletions
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@ -1,4 +1,4 @@
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use crate::{Real, Time, Timer, TimerMode};
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use crate::{Real, Time, Timer, TimerMode, Virtual};
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use bevy_ecs::system::Res;
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use bevy_utils::Duration;
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@ -203,6 +203,38 @@ pub fn repeating_after_real_delay(
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}
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}
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/// Run condition that is active when the [`Time<Virtual>`] clock is paused.
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/// Use [`bevy_ecs::schedule::common_conditions::not`] to make it active when
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/// it's not paused.
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///
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/// ```rust,no_run
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/// # use bevy_app::{App, NoopPluginGroup as DefaultPlugins, PluginGroup, Update};
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/// # use bevy_ecs::schedule::{common_conditions::not, IntoSystemConfigs};
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/// # use bevy_time::common_conditions::paused;
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/// fn main() {
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/// App::new()
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/// .add_plugins(DefaultPlugins)
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/// .add_systems(
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/// Update,
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/// (
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/// is_paused.run_if(paused),
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/// not_paused.run_if(not(paused)),
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/// )
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/// )
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/// .run();
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/// }
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/// fn is_paused() {
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/// // ran when time is paused
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/// }
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///
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/// fn not_paused() {
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/// // ran when time is not paused
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/// }
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/// ```
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pub fn paused(time: Res<Time<Virtual>>) -> bool {
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time.is_paused()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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@ -215,7 +247,9 @@ mod tests {
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#[test]
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fn distributive_run_if_compiles() {
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Schedule::default().add_systems(
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(test_system, test_system).distributive_run_if(on_timer(Duration::new(1, 0))),
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(test_system, test_system)
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.distributive_run_if(on_timer(Duration::new(1, 0)))
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.distributive_run_if(paused),
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);
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}
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}
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