8a87a51c54
15 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
spvky
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40007cdb2e
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Adds update interval config for FpsOverlayPlugin (#17489)
# Objective Fixes #17487 - Adds a new field `refresh_interval` to `FpsOverlayConfig` to allow the user setting a minimum time before each refresh of the FPS display ## Solution - Add `refresh_interval` to `FpsOverlayConfig` - When updating the on screen text, check a duration of `refresh_interval` has passed, if not, don't update the FPS counter ## Testing - Created a new bevy project - Included the `FpsOverlayPlugin` with the default `refresh_interval` (100 ms) - Included the `FpsOverlayPlugin` with an obnoxious `refresh_interval` (2 seconds) --- --------- Co-authored-by: Benjamin Brienen <benjamin.brienen@outlook.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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Alice Cecile
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44ad3bf62b
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Move Resource trait to its own file (#17469)
# Objective `bevy_ecs`'s `system` module is something of a grab bag, and *very* large. This is particularly true for the `system_param` module, which is more than 2k lines long! While it could be defensible to put `Res` and `ResMut` there (lol no they're in change_detection.rs, obviously), it doesn't make any sense to put the `Resource` trait there. This is confusing to navigate (and painful to work on and review). ## Solution - Create a root level `bevy_ecs/resource.rs` module to mirror `bevy_ecs/component.rs` - move the `Resource` trait to that module - move the `Resource` derive macro to that module as well (Rust really likes when you pun on the names of the derive macro and trait and put them in the same path) - fix all of the imports ## Notes to reviewers - We could probably move more stuff into here, but I wanted to keep this PR as small as possible given the absurd level of import changes. - This PR is ground work for my upcoming attempts to store resource data on components (resources-as-entities). Splitting this code out will make the work and review a bit easier, and is the sort of overdue refactor that's good to do as part of more meaningful work. ## Testing cargo build works! ## Migration Guide `bevy_ecs::system::Resource` has been moved to `bevy_ecs::resource::Resource`. |
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Carter Anderson
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21f1e3045c
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Relationships (non-fragmenting, one-to-many) (#17398)
This adds support for one-to-many non-fragmenting relationships (with planned paths for fragmenting and non-fragmenting many-to-many relationships). "Non-fragmenting" means that entities with the same relationship type, but different relationship targets, are not forced into separate tables (which would cause "table fragmentation"). Functionally, this fills a similar niche as the current Parent/Children system. The biggest differences are: 1. Relationships have simpler internals and significantly improved performance and UX. Commands and specialized APIs are no longer necessary to keep everything in sync. Just spawn entities with the relationship components you want and everything "just works". 2. Relationships are generalized. Bevy can provide additional built in relationships, and users can define their own. **REQUEST TO REVIEWERS**: _please don't leave top level comments and instead comment on specific lines of code. That way we can take advantage of threaded discussions. Also dont leave comments simply pointing out CI failures as I can read those just fine._ ## Built on top of what we have Relationships are implemented on top of the Bevy ECS features we already have: components, immutability, and hooks. This makes them immediately compatible with all of our existing (and future) APIs for querying, spawning, removing, scenes, reflection, etc. The fewer specialized APIs we need to build, maintain, and teach, the better. ## Why focus on one-to-many non-fragmenting first? 1. This allows us to improve Parent/Children relationships immediately, in a way that is reasonably uncontroversial. Switching our hierarchy to fragmenting relationships would have significant performance implications. ~~Flecs is heavily considering a switch to non-fragmenting relations after careful considerations of the performance tradeoffs.~~ _(Correction from @SanderMertens: Flecs is implementing non-fragmenting storage specialized for asset hierarchies, where asset hierarchies are many instances of small trees that have a well defined structure)_ 2. Adding generalized one-to-many relationships is currently a priority for the [Next Generation Scene / UI effort](https://github.com/bevyengine/bevy/discussions/14437). Specifically, we're interested in building reactions and observers on top. ## The changes This PR does the following: 1. Adds a generic one-to-many Relationship system 3. Ports the existing Parent/Children system to Relationships, which now lives in `bevy_ecs::hierarchy`. The old `bevy_hierarchy` crate has been removed. 4. Adds on_despawn component hooks 5. Relationships can opt-in to "despawn descendants" behavior, meaning that the entire relationship hierarchy is despawned when `entity.despawn()` is called. The built in Parent/Children hierarchies enable this behavior, and `entity.despawn_recursive()` has been removed. 6. `world.spawn` now applies commands after spawning. This ensures that relationship bookkeeping happens immediately and removes the need to manually flush. This is in line with the equivalent behaviors recently added to the other APIs (ex: insert). 7. Removes the ValidParentCheckPlugin (system-driven / poll based) in favor of a `validate_parent_has_component` hook. ## Using Relationships The `Relationship` trait looks like this: ```rust pub trait Relationship: Component + Sized { type RelationshipSources: RelationshipSources<Relationship = Self>; fn get(&self) -> Entity; fn from(entity: Entity) -> Self; } ``` A relationship is a component that: 1. Is a simple wrapper over a "target" Entity. 2. Has a corresponding `RelationshipSources` component, which is a simple wrapper over a collection of entities. Every "target entity" targeted by a "source entity" with a `Relationship` has a `RelationshipSources` component, which contains every "source entity" that targets it. For example, the `Parent` component (as it currently exists in Bevy) is the `Relationship` component and the entity containing the Parent is the "source entity". The entity _inside_ the `Parent(Entity)` component is the "target entity". And that target entity has a `Children` component (which implements `RelationshipSources`). In practice, the Parent/Children relationship looks like this: ```rust #[derive(Relationship)] #[relationship(relationship_sources = Children)] pub struct Parent(pub Entity); #[derive(RelationshipSources)] #[relationship_sources(relationship = Parent)] pub struct Children(Vec<Entity>); ``` The Relationship and RelationshipSources derives automatically implement Component with the relevant configuration (namely, the hooks necessary to keep everything in sync). The most direct way to add relationships is to spawn entities with relationship components: ```rust let a = world.spawn_empty().id(); let b = world.spawn(Parent(a)).id(); assert_eq!(world.entity(a).get::<Children>().unwrap(), &[b]); ``` There are also convenience APIs for spawning more than one entity with the same relationship: ```rust world.spawn_empty().with_related::<Children>(|s| { s.spawn_empty(); s.spawn_empty(); }) ``` The existing `with_children` API is now a simpler wrapper over `with_related`. This makes this change largely non-breaking for existing spawn patterns. ```rust world.spawn_empty().with_children(|s| { s.spawn_empty(); s.spawn_empty(); }) ``` There are also other relationship APIs, such as `add_related` and `despawn_related`. ## Automatic recursive despawn via the new on_despawn hook `RelationshipSources` can opt-in to "despawn descendants" behavior, which will despawn all related entities in the relationship hierarchy: ```rust #[derive(RelationshipSources)] #[relationship_sources(relationship = Parent, despawn_descendants)] pub struct Children(Vec<Entity>); ``` This means that `entity.despawn_recursive()` is no longer required. Instead, just use `entity.despawn()` and the relevant related entities will also be despawned. To despawn an entity _without_ despawning its parent/child descendants, you should remove the `Children` component first, which will also remove the related `Parent` components: ```rust entity .remove::<Children>() .despawn() ``` This builds on the on_despawn hook introduced in this PR, which is fired when an entity is despawned (before other hooks). ## Relationships are the source of truth `Relationship` is the _single_ source of truth component. `RelationshipSources` is merely a reflection of what all the `Relationship` components say. By embracing this, we are able to significantly improve the performance of the system as a whole. We can rely on component lifecycles to protect us against duplicates, rather than needing to scan at runtime to ensure entities don't already exist (which results in quadratic runtime). A single source of truth gives us constant-time inserts. This does mean that we cannot directly spawn populated `Children` components (or directly add or remove entities from those components). I personally think this is a worthwhile tradeoff, both because it makes the performance much better _and_ because it means theres exactly one way to do things (which is a philosophy we try to employ for Bevy APIs). As an aside: treating both sides of the relationship as "equivalent source of truth relations" does enable building simple and flexible many-to-many relationships. But this introduces an _inherent_ need to scan (or hash) to protect against duplicates. [`evergreen_relations`](https://github.com/EvergreenNest/evergreen_relations) has a very nice implementation of the "symmetrical many-to-many" approach. Unfortunately I think the performance issues inherent to that approach make it a poor choice for Bevy's default relationship system. ## Followup Work * Discuss renaming `Parent` to `ChildOf`. I refrained from doing that in this PR to keep the diff reasonable, but I'm personally biased toward this change (and using that naming pattern generally for relationships). * [Improved spawning ergonomics](https://github.com/bevyengine/bevy/discussions/16920) * Consider adding relationship observers/triggers for "relationship targets" whenever a source is added or removed. This would replace the current "hierarchy events" system, which is unused upstream but may have existing users downstream. I think triggers are the better fit for this than a buffered event queue, and would prefer not to add that back. * Fragmenting relations: My current idea hinges on the introduction of "value components" (aka: components whose type _and_ value determines their ComponentId, via something like Hashing / PartialEq). By labeling a Relationship component such as `ChildOf(Entity)` as a "value component", `ChildOf(e1)` and `ChildOf(e2)` would be considered "different components". This makes the transition between fragmenting and non-fragmenting a single flag, and everything else continues to work as expected. * Many-to-many support * Non-fragmenting: We can expand Relationship to be a list of entities instead of a single entity. I have largely already written the code for this. * Fragmenting: With the "value component" impl mentioned above, we get many-to-many support "for free", as it would allow inserting multiple copies of a Relationship component with different target entities. Fixes #3742 (If this PR is merged, I think we should open more targeted followup issues for the work above, with a fresh tracking issue free of the large amount of less-directed historical context) Fixes #17301 Fixes #12235 Fixes #15299 Fixes #15308 ## Migration Guide * Replace `ChildBuilder` with `ChildSpawnerCommands`. * Replace calls to `.set_parent(parent_id)` with `.insert(Parent(parent_id))`. * Replace calls to `.replace_children()` with `.remove::<Children>()` followed by `.add_children()`. Note that you'll need to manually despawn any children that are not carried over. * Replace calls to `.despawn_recursive()` with `.despawn()`. * Replace calls to `.despawn_descendants()` with `.despawn_related::<Children>()`. * If you have any calls to `.despawn()` which depend on the children being preserved, you'll need to remove the `Children` component first. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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Rob Parrett
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f0047899d7
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Allow users to customize history length in FrameTimeDiagnosticsPlugin (#17259)
# Objective I have an application where I'd like to measure average frame rate over the entire life of the application, and it would be handy if I could just configure this on the existing `FrameTimeDiagnosticsPlugin`. Probably fixes #10948? ## Solution Add `max_history_length` to `FrameTimeDiagnosticsPlugin`, and because `smoothing_factor` seems to be based on history length, add that too. ## Discussion I'm not totally sure that `DEFAULT_MAX_HISTORY_LENGTH` is a great default for `FrameTimeDiagnosticsPlugin` (or any diagnostic?). That's 1/3 of a second at typical game frame rates. Moreover, the default print interval for `LogDiagnosticsPlugin` is 1 second. So when the two are combined, you are printing the average over the last third of the duration between now and the previous print, which seems a bit wonky. (related: #11429) I'm pretty sure this default value discussed and the current value wasn't totally arbitrary though. Maybe it would be nice for `Diagnostic` to have a `with_max_history_length_and_also_calculate_a_good_default_smoothing_factor` method? And then make an explicit smoothing factor in `FrameTimeDiagnosticsPlugin` optional? Or add a `new(max_history_length: usize)` method to `FrameTimeDiagnosticsPlugin` that sets a reasonable default `smoothing_factor`? edit: This one seems like a no-brainer, doing it. ## Alternatives It's really easy to roll your own `FrameTimeDiagnosticsPlugin`, but that might not be super interoperable with, for example, third party FPS overlays. Still, might be the right call. ## Testing `cargo run --example many_sprites` (modified to use a custom `max_history_length`) ## Migration Guide `FrameTimeDiagnosticsPlugin` now contains two fields. Use `FrameTimeDiagnosticsPlugin::default()` to match Bevy's previous behavior or, for example, `FrameTimeDiagnosticsPlugin::new(60)` to configure it. |
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Zachary Harrold
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a371ee3019
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Remove tracing re-export from bevy_utils (#17161)
# Objective - Contributes to #11478 ## Solution - Made `bevy_utils::tracing` `doc(hidden)` - Re-exported `tracing` from `bevy_log` for end-users - Added `tracing` directly to crates that need it. ## Testing - CI --- ## Migration Guide If you were importing `tracing` via `bevy::utils::tracing`, instead use `bevy::log::tracing`. Note that many items within `tracing` are also directly re-exported from `bevy::log` as well, so you may only need `bevy::log` for the most common items (e.g., `warn!`, `trace!`, etc.). This also applies to the `log_once!` family of macros. ## Notes - While this doesn't reduce the line-count in `bevy_utils`, it further decouples the internal crates from `bevy_utils`, making its eventual removal more feasible in the future. - I have just imported `tracing` as we do for all dependencies. However, a workspace dependency may be more appropriate for version management. |
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Carter Anderson
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015f2c69ca
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Merge Style properties into Node. Use ComputedNode for computed properties. (#15975)
# Objective Continue improving the user experience of our UI Node API in the direction specified by [Bevy's Next Generation Scene / UI System](https://github.com/bevyengine/bevy/discussions/14437) ## Solution As specified in the document above, merge `Style` fields into `Node`, and move "computed Node fields" into `ComputedNode` (I chose this name over something like `ComputedNodeLayout` because it currently contains more than just layout info. If we want to break this up / rename these concepts, lets do that in a separate PR). `Style` has been removed. This accomplishes a number of goals: ## Ergonomics wins Specifying both `Node` and `Style` is now no longer required for non-default styles Before: ```rust commands.spawn(( Node::default(), Style { width: Val::Px(100.), ..default() }, )); ``` After: ```rust commands.spawn(Node { width: Val::Px(100.), ..default() }); ``` ## Conceptual clarity `Style` was never a comprehensive "style sheet". It only defined "core" style properties that all `Nodes` shared. Any "styled property" that couldn't fit that mold had to be in a separate component. A "real" style system would style properties _across_ components (`Node`, `Button`, etc). We have plans to build a true style system (see the doc linked above). By moving the `Style` fields to `Node`, we fully embrace `Node` as the driving concept and remove the "style system" confusion. ## Next Steps * Consider identifying and splitting out "style properties that aren't core to Node". This should not happen for Bevy 0.15. --- ## Migration Guide Move any fields set on `Style` into `Node` and replace all `Style` component usage with `Node`. Before: ```rust commands.spawn(( Node::default(), Style { width: Val::Px(100.), ..default() }, )); ``` After: ```rust commands.spawn(Node { width: Val::Px(100.), ..default() }); ``` For any usage of the "computed node properties" that used to live on `Node`, use `ComputedNode` instead: Before: ```rust fn system(nodes: Query<&Node>) { for node in &nodes { let computed_size = node.size(); } } ``` After: ```rust fn system(computed_nodes: Query<&ComputedNode>) { for computed_node in &computed_nodes { let computed_size = computed_node.size(); } } ``` |
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VitalyR
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eb19a9ea0b
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Migrate UI bundles to required components (#15898)
# Objective - Migrate UI bundles to required components, fixes #15889 ## Solution - deprecate `NodeBundle` in favor of `Node` - deprecate `ImageBundle` in favor of `UiImage` - deprecate `ButtonBundle` in favor of `Button` ## Testing CI. ## Migration Guide - Replace all uses of `NodeBundle` with `Node`. e.g. ```diff commands - .spawn(NodeBundle { - style: Style { + .spawn(( + Node::default(), + Style { width: Val::Percent(100.), align_items: AlignItems::Center, justify_content: JustifyContent::Center, ..default() }, - ..default() - }) + )) ``` - Replace all uses of `ButtonBundle` with `Button`. e.g. ```diff .spawn(( - ButtonBundle { - style: Style { - width: Val::Px(w), - height: Val::Px(h), - // horizontally center child text - justify_content: JustifyContent::Center, - // vertically center child text - align_items: AlignItems::Center, - margin: UiRect::all(Val::Px(20.0)), - ..default() - }, - image: image.clone().into(), + Button, + Style { + width: Val::Px(w), + height: Val::Px(h), + // horizontally center child text + justify_content: JustifyContent::Center, + // vertically center child text + align_items: AlignItems::Center, + margin: UiRect::all(Val::Px(20.0)), ..default() }, + UiImage::from(image.clone()), ImageScaleMode::Sliced(slicer.clone()), )) ``` - Replace all uses of `ImageBundle` with `UiImage`. e.g. ```diff - commands.spawn(ImageBundle { - image: UiImage { + commands.spawn(( + UiImage { texture: metering_mask, ..default() }, - style: Style { + Style { width: Val::Percent(100.0), height: Val::Percent(100.0), ..default() }, - ..default() - }); + )); ``` --------- Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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MiniaczQ
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f602edad09
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Text Rework cleanup (#15887)
# Objective Cleanup naming and docs, add missing migration guide after #15591 All text root nodes now use `Text` (UI) / `Text2d`. All text readers/writers use `Text<Type>Reader`/`Text<Type>Writer` convention. --- ## Migration Guide Doubles as #15591 migration guide. Text bundles (`TextBundle` and `Text2dBundle`) were removed in favor of `Text` and `Text2d`. Shared configuration fields were replaced with `TextLayout`, `TextFont` and `TextColor` components. Just `TextBundle`'s additional field turned into `TextNodeFlags` component, while `Text2dBundle`'s additional fields turned into `TextBounds` and `Anchor` components. Text sections were removed in favor of hierarchy-based approach. For root text entities with `Text` or `Text2d` components, child entities with `TextSpan` will act as additional text sections. To still access text spans by index, use the new `TextUiReader`, `Text2dReader` and `TextUiWriter`, `Text2dWriter` system parameters. |
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ickshonpe
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6f7d0e5725
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split up TextStyle (#15857)
# Objective
Currently text is recomputed unnecessarily on any changes to its color,
which is extremely expensive.
## Solution
Split up `TextStyle` into two separate components `TextFont` and
`TextColor`.
## Testing
I added this system to `many_buttons`:
```rust
fn set_text_colors_changed(mut colors: Query<&mut TextColor>) {
for mut text_color in colors.iter_mut() {
text_color.set_changed();
}
}
```
reports ~4fps on main, ~50fps with this PR.
## Migration Guide
`TextStyle` has been renamed to `TextFont` and its `color` field has
been moved to a separate component named `TextColor` which newtypes
`Color`.
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UkoeHB
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c2c19e5ae4
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Text rework (#15591)
**Ready for review. Examples migration progress: 100%.** # Objective - Implement https://github.com/bevyengine/bevy/discussions/15014 ## Solution This implements [cart's proposal](https://github.com/bevyengine/bevy/discussions/15014#discussioncomment-10574459) faithfully except for one change. I separated `TextSpan` from `TextSpan2d` because `TextSpan` needs to require the `GhostNode` component, which is a `bevy_ui` component only usable by UI. Extra changes: - Added `EntityCommands::commands_mut` that returns a mutable reference. This is a blocker for extension methods that return something other than `self`. Note that `sickle_ui`'s `UiBuilder::commands` returns a mutable reference for this reason. ## Testing - [x] Text examples all work. --- ## Showcase TODO: showcase-worthy ## Migration Guide TODO: very breaking ### Accessing text spans by index Text sections are now text sections on different entities in a hierarchy, Use the new `TextReader` and `TextWriter` system parameters to access spans by index. Before: ```rust fn refresh_text(mut query: Query<&mut Text, With<TimeText>>, time: Res<Time>) { let text = query.single_mut(); text.sections[1].value = format_time(time.elapsed()); } ``` After: ```rust fn refresh_text( query: Query<Entity, With<TimeText>>, mut writer: UiTextWriter, time: Res<Time> ) { let entity = query.single(); *writer.text(entity, 1) = format_time(time.elapsed()); } ``` ### Iterating text spans Text spans are now entities in a hierarchy, so the new `UiTextReader` and `UiTextWriter` system parameters provide ways to iterate that hierarchy. The `UiTextReader::iter` method will give you a normal iterator over spans, and `UiTextWriter::for_each` lets you visit each of the spans. --------- Co-authored-by: ickshonpe <david.curthoys@googlemail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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ickshonpe
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c5742ff43e
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Simplified ui_stack_system (#9889)
# Objective `ui_stack_system` generates a tree of `StackingContexts` which it then flattens to get the `UiStack`. But there's no need to construct a new tree. We can query for nodes with a global `ZIndex`, add those nodes to the root nodes list and then build the `UiStack` from a walk of the existing layout tree, ignoring any branches that have a global `Zindex`. Fixes #9877 ## Solution Split the `ZIndex` enum into two separate components, `ZIndex` and `GlobalZIndex` Query for nodes with a `GlobalZIndex`, add those nodes to the root nodes list and then build the `UiStack` from a walk of the existing layout tree, filtering branches by `Without<GlobalZIndex>` so we don't revisit nodes. ``` cargo run --profile stress-test --features trace_tracy --example many_buttons ``` <img width="672" alt="ui-stack-system-walk-split-enum" src="https://github.com/bevyengine/bevy/assets/27962798/11e357a5-477f-4804-8ada-c4527c009421"> (Yellow is this PR, red is main) --- ## Changelog `Zindex` * The `ZIndex` enum has been split into two separate components `ZIndex` (which replaces `ZIndex::Local`) and `GlobalZIndex` (which replaces `ZIndex::Global`). An entity can have both a `ZIndex` and `GlobalZIndex`, in comparisons `ZIndex` breaks ties if two `GlobalZIndex` values are equal. `ui_stack_system` * Instead of generating a tree of `StackingContexts`, query for nodes with a `GlobalZIndex`, add those nodes to the root nodes list and then build the `UiStack` from a walk of the existing layout tree, filtering branches by `Without<GlobalZIndex` so we don't revisit nodes. ## Migration Guide The `ZIndex` enum has been split into two separate components `ZIndex` (which replaces `ZIndex::Local`) and `GlobalZIndex` (which replaces `ZIndex::Global`). An entity can have both a `ZIndex` and `GlobalZIndex`, in comparisons `ZIndex` breaks ties if two `GlobalZindex` values are equal. --------- Co-authored-by: Gabriel Bourgeois <gabriel.bourgeoisv4si@gmail.com> Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> Co-authored-by: UkoeHB <37489173+UkoeHB@users.noreply.github.com> |
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no-materials
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b884f96598
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Implement enabled flag for fps overlay (#15246)
# Objective Fixes #15223 ## Solution Adds an `enabled` flag to the `FpsOverlayConfig` resource with a system that detects it's change, and adjusts the visibility of the overlay text entity. ## Testing I extended the `fps_overlay` example with the option to toggle the overlay. Run with: ``` cargo run --features="bevy_dev_tools" --example fps_overlay ``` |
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Al M
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ace4eaaf0e
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Merge BuildWorldChildren and BuildChildren traits. (#14052)
# Objective The `BuildChildren` and `BuildWorldChildren` traits are mostly identical, so I decided to try and merge them. I'm not sure of the history, maybe they were added before GATs existed. ## Solution - Add an associated type to `BuildChildren` which reflects the prior differences between the `BuildChildren` and `BuildWorldChildren` traits. - Add `ChildBuild` trait that is the bounds for `BuildChildren::Builder`, with impls for `ChildBuilder` and `WorldChildBuilder`. - Remove `BuildWorldChildren` trait and replace it with an impl of `BuildChildren` for `EntityWorldMut`. ## Testing I ran several of the examples that use entity hierarchies, mainly UI. --- ## Changelog n/a ## Migration Guide n/a |
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IceSentry
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4d0d070059
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Always spawn fps_overlay on top of everything (#12586)
# Objective - Currently the fps_overlay affects any other ui node spawned. This should not happen ## Solution - Use position absolute and a ZIndex of `i32::MAX - 32` - I also modified the example a little bit to center it correctly. It only worked previously because the overlay was pushing it down. I also took the opportunity to simplify the text spawning code a little bit. |
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Mateusz Wachowiak
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2d29954034
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Fps overlay (#12382)
# Objective - Part of #12351 - Add fps overlay ## Solution - Create `FpsOverlayPlugin` - Allow for configuration through resource `FpsOverlayConfig` - Allow for configuration during runtime ### Preview on default settings  --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |