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bevy_core: make bevy_reflect optional (#14179)

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# Objective

Allow use of `bevy_core` types without needing `bevy_reflect`.

## Solution

Make `bevy_reflect` within `bevy_core` optional. It's compiled in by
default.
Turn on reflect in dependencies as well when this feature is on.

## Testing

- Did you test these changes? If so, how?

I did a `cargo hack -p bevy_core--each-feature build`.


Similar PR: https://github.com/bevyengine/bevy/pull/14167

Discord context starts here:
https://discord.com/channels/691052431525675048/768253008416342076/1258814534651482163

Signed-off-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
Co-authored-by: Torstein Grindvik <torstein.grindvik@muybridge.com>
This commit is contained in:
Torstein Grindvik 2024-07-08 03:09:04 +02:00 committed by GitHub
parent 2d34226043
commit faf3c175b8
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GPG key ID: B5690EEEBB952194
3 changed files with 27 additions and 12 deletions
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16
crates/bevy_core/Cargo.toml
View file

@ -10,15 +10,11 @@ keywords = ["bevy"]
[dependencies]
# bevy
bevy_app = { path = "../bevy_app", version = "0.14.0-dev", features = [
"bevy_reflect",
] }
bevy_ecs = { path = "../bevy_ecs", version = "0.14.0-dev", features = [
"bevy_reflect",
] }
bevy_app = { path = "../bevy_app", version = "0.14.0-dev", default-features = false }
bevy_ecs = { path = "../bevy_ecs", version = "0.14.0-dev", default-features = false }
bevy_reflect = { path = "../bevy_reflect", version = "0.14.0-dev", features = [
"bevy",
] }
], optional = true }
bevy_tasks = { path = "../bevy_tasks", version = "0.14.0-dev" }
bevy_utils = { path = "../bevy_utils", version = "0.14.0-dev" }
@ -27,6 +23,12 @@ serde = { version = "1.0", optional = true }
uuid = "1.0"
[features]
default = ["bevy_reflect"]
bevy_reflect = [
"dep:bevy_reflect",
"bevy_app/bevy_reflect",
"bevy_ecs/bevy_reflect",
]
serialize = ["dep:serde"]
[dev-dependencies]

2
crates/bevy_core/src/lib.rs
View file

@ -36,7 +36,9 @@ use bevy_tasks::tick_global_task_pools_on_main_thread;
pub struct TypeRegistrationPlugin;
impl Plugin for TypeRegistrationPlugin {
#[cfg_attr(not(feature = "bevy_reflect"), allow(unused_variables))]
fn build(&self, app: &mut App) {
#[cfg(feature = "bevy_reflect")]
app.register_type::<Name>();
}
}

21
crates/bevy_core/src/name.rs
View file

@ -1,7 +1,11 @@
use bevy_ecs::query::QueryData;
use bevy_ecs::{component::Component, entity::Entity, reflect::ReflectComponent};
#[cfg(feature = "bevy_reflect")]
use bevy_ecs::reflect::ReflectComponent;
use bevy_ecs::{component::Component, entity::Entity};
#[cfg(feature = "bevy_reflect")]
use bevy_reflect::std_traits::ReflectDefault;
#[cfg(feature = "bevy_reflect")]
use bevy_reflect::Reflect;
use bevy_utils::AHasher;
use std::{
@ -10,7 +14,7 @@ use std::{
ops::Deref,
};
#[cfg(feature = "serialize")]
#[cfg(all(feature = "serialize", feature = "bevy_reflect"))]
use bevy_reflect::{ReflectDeserialize, ReflectSerialize};
/// Component used to identify an entity. Stores a hash for faster comparisons.
@ -20,9 +24,16 @@ use bevy_reflect::{ReflectDeserialize, ReflectSerialize};
/// [`Name`] should not be treated as a globally unique identifier for entities,
/// as multiple entities can have the same name. [`Entity`] should be
/// used instead as the default unique identifier.
#[derive(Reflect, Component, Clone)]
#[reflect(Component, Default, Debug)]
#[cfg_attr(feature = "serialize", reflect(Serialize, Deserialize))]
#[derive(Component, Clone)]
#[cfg_attr(
feature = "bevy_reflect",
derive(Reflect),
reflect(Component, Default, Debug)
)]
#[cfg_attr(
all(feature = "serialize", feature = "bevy_reflect"),
reflect(Deserialize, Serialize)
)]
pub struct Name {
hash: u64, // Won't be serialized (see: `bevy_core::serde` module)
name: Cow<'static, str>,