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examples/ecs/iter_combinations: Initialize velocity using fixed timestep (#10673)

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# Objective

On some platforms (observed on Windows and Linux, works fine on web),
velocity of all entities would be initialized to zero, making them
simply fall into the star.

## Solution

Using `Time<Fixed>::timestep` instead of `Time::delta_seconds` to
initialize velocity. Since the entities are generated in the startup
schedule, no time has elapsed yet and `Time::delta_seconds` would return
zero on some platforms. `Time<Fixed>::timestep` will always return the
expected time step of `FixedUpdate` schedule.
This commit is contained in:
IWonderWhatThisAPIDoes 2024-02-27 02:44:50 +01:00 committed by GitHub
parent fd0f1a37ad
commit 8020805830
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1 changed files with 2 additions and 2 deletions
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4
examples/ecs/iter_combinations.rs
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@ -34,7 +34,7 @@ struct BodyBundle {
}
fn generate_bodies(
time: Res<Time>,
time: Res<Time<Fixed>>,
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
@ -81,7 +81,7 @@ fn generate_bodies(
rng.gen_range(vel_range.clone()),
rng.gen_range(vel_range.clone()),
rng.gen_range(vel_range.clone()),
) * time.delta_seconds(),
) * time.timestep().as_secs_f32(),
),
});
}