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StorageType of resources should not be configurable #3361

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alice-i-cecile opened this issue Dec 17, 2021 · 1 comment
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StorageType of resources should not be configurable #3361

alice-i-cecile opened this issue Dec 17, 2021 · 1 comment
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A-ECS Entities, components, systems, and events C-Code-Quality A section of code that is hard to understand or change

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@alice-i-cecile
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The StorageType of resources is configurable in the ComponentDescriptor impl.

bevy/crates/bevy_ecs/src/component.rs

Line 180 in 7356f15

impl ComponentDescriptor {

This doesn't exactly make sense, as we only ever have one of each resource, and it's not immediately clear to me that this is meaningful.

In practice, this is always called with StorageType::default() as its argument (defaulting to TableStorage). This should be moved to within these methods, and the argument should be removed.

    pub fn init_resource<T: Resource>(&mut self) -> ComponentId {
        // SAFE: The [`ComponentDescriptor`] matches the [`TypeId`]
        unsafe {
            self.get_or_insert_resource_with(TypeId::of::<T>(), || {
                ComponentDescriptor::new_resource::<T>(StorageType::default())
            })
        }
    }
@alice-i-cecile alice-i-cecile added A-ECS Entities, components, systems, and events C-Code-Quality A section of code that is hard to understand or change labels Dec 17, 2021
@alice-i-cecile
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SparseStorage may actually be a more reasonable choice, but eh.

@r4gus r4gus mentioned this issue Dec 30, 2021
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@bors bors bot closed this as completed in c641a90 Dec 30, 2021
mockersf pushed a commit to mockersf/bevy that referenced this issue Jan 1, 2022
@r4gus @mockersf
StorageType parameter removed from ComponentDescriptor::new_resource (b…
a441178 
…evyengine#3495)

# Objective

Remove the `StorageType` parameter from `ComponentDescriptor::new_resource` as discussed in bevyengine#3361.

- fixes bevyengine#3361

## Solution

- Parameter removed.
- Basic docs added.

## Note

Left a [comment](bevyengine#3361 (comment)) about `SparseStorage` being the more reasonable choice.



Co-authored-by: r4gus <[email protected]>
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[Merged by Bors] - StorageType parameter removed from ComponentDescriptor::new_resource
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