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Local resources don't create if already present (#745)

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Local<T> will no longer insert the inner resource if it already exists.
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Oscar 2020-10-30 12:21:57 -07:00 committed by GitHub
parent dea05e9af5
commit b6004e44cf
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1 changed files with 6 additions and 2 deletions
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8
crates/bevy_ecs/src/resource/resource_query.rs
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@ -295,9 +295,13 @@ impl<'a, T: Resource + FromResources> ResourceQuery for Local<'a, T> {
type Fetch = FetchResourceLocalMut<T>; type Fetch = FetchResourceLocalMut<T>;
fn initialize(resources: &mut Resources, id: Option<SystemId>) { fn initialize(resources: &mut Resources, id: Option<SystemId>) {
let value = T::from_resources(resources);
let id = id.expect("Local<T> resources can only be used by systems"); let id = id.expect("Local<T> resources can only be used by systems");
resources.insert_local(id, value);
// Only add the local resource if it doesn't already exist for this system
if resources.get_local::<T>(id).is_none() {
let value = T::from_resources(resources);
resources.insert_local(id, value);
}
} }
} }