29 lines
797 B
Rust
29 lines
797 B
Rust
//! Demonstrates how reflection is used with generic Rust types.
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use bevy::prelude::*;
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use std::any::TypeId;
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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// You must manually register each instance of a generic type
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.register_type::<MyType<u32>>()
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.add_systems(Startup, setup)
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.run();
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}
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#[derive(Reflect)]
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struct MyType<T: Reflect> {
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value: T,
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}
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fn setup(type_registry: Res<AppTypeRegistry>) {
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let type_registry = type_registry.read();
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let registration = type_registry.get(TypeId::of::<MyType<u32>>()).unwrap();
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info!("Registration for {} exists", registration.short_name());
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// MyType<String> was not manually registered, so it does not exist
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assert!(type_registry.get(TypeId::of::<MyType<String>>()).is_none());
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}
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