89cbc78d3d
# Objective Be consistent with `Resource`s and `Components` and have `Event` types be more self-documenting. Although not susceptible to accidentally using a function instead of a value due to `Event`s only being initialized by their type, much of the same reasoning for removing the blanket impl on `Resource` also applies here. * Not immediately obvious if a type is intended to be an event * Prevent invisible conflicts if the same third-party or primitive types are used as events * Allows for further extensions (e.g. opt-in warning for missed events) ## Solution Remove the blanket impl for the `Event` trait. Add a derive macro for it. --- ## Changelog - `Event` is no longer implemented for all applicable types. Add the `#[derive(Event)]` macro for events. ## Migration Guide * Add the `#[derive(Event)]` macro for events. Third-party types used as events should be wrapped in a newtype.
40 lines
904 B
Rust
40 lines
904 B
Rust
use bevy_ecs::prelude::*;
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#[derive(Event)]
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struct BenchEvent<const SIZE: usize>([u8; SIZE]);
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impl<const SIZE: usize> Default for BenchEvent<SIZE> {
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fn default() -> Self {
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BenchEvent([0; SIZE])
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}
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}
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pub struct Benchmark<const SIZE: usize> {
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events: Events<BenchEvent<SIZE>>,
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count: usize,
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}
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impl<const SIZE: usize> Benchmark<SIZE> {
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pub fn new(count: usize) -> Self {
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let mut events = Events::default();
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// Force both internal buffers to be allocated.
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for _ in 0..2 {
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for _ in 0..count {
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events.send(BenchEvent([0u8; SIZE]));
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}
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events.update();
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}
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Self { events, count }
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}
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pub fn run(&mut self) {
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for _ in 0..self.count {
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self.events
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.send(std::hint::black_box(BenchEvent([0u8; SIZE])));
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}
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self.events.update();
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}
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}
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