Commit graph

167 commits

Author SHA1 Message Date
CatThingy
89cbc78d3d
Require #[derive(Event)] on all Events (#7086)
# Objective

Be consistent with `Resource`s and `Components` and have `Event` types
be more self-documenting.
Although not susceptible to accidentally using a function instead of a
value due to `Event`s only being initialized by their type, much of the
same reasoning for removing the blanket impl on `Resource` also applies
here.

* Not immediately obvious if a type is intended to be an event
* Prevent invisible conflicts if the same third-party or primitive types
are used as events
* Allows for further extensions (e.g. opt-in warning for missed events)

## Solution

Remove the blanket impl for the `Event` trait. Add a derive macro for
it.

---

## Changelog

- `Event` is no longer implemented for all applicable types. Add the
`#[derive(Event)]` macro for events.

## Migration Guide

* Add the `#[derive(Event)]` macro for events. Third-party types used as
events should be wrapped in a newtype.
2023-06-06 14:44:32 +00:00
张林伟
b72b15465d
Support to set window theme and expose system window theme changed event (#8593)
# Objective

- Fixes https://github.com/bevyengine/bevy/issues/8586.

## Solution

- Add `preferred_theme` field to `Window` and set it when window
creation
- Add `window_theme` field to `InternalWindowState` to store current
window theme
- Expose winit `WindowThemeChanged` event

---------

Co-authored-by: hate <15314665+hate@users.noreply.github.com>
Co-authored-by: Nicola Papale <nicopap@users.noreply.github.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François <mockersf@gmail.com>
2023-06-05 21:04:22 +00:00
François
fb148f7d65
remove some use of once_cell that can be replace with new std (#8739)
# Objective

- Some methods are stabilised with Rust 1.70
https://blog.rust-lang.org/2023/06/01/Rust-1.70.0.html#oncecell-and-oncelock

## Solution

- Remove `once_cell` when possible and use std instead
2023-06-01 21:55:18 +00:00
Nolan Darilek
897daa0ad6
Move bevy_ui accessibility systems to PostUpdate. (#8653)
# Objective

`bevy_ui` accessibility updates are probably more correctly done in
`PostUpdate`.

## Solution

Move `bevy_ui` accessibility updates to `PostUpdate`.

---------

Co-authored-by: ickshonpe <david.curthoys@googlemail.com>
2023-05-23 23:50:48 +00:00
François
71842c5ac9
Webgpu support (#8336)
# Objective

- Support WebGPU
- alternative to #5027 that doesn't need any async / await
- fixes #8315 
- Surprise fix #7318

## Solution

### For async renderer initialisation 

- Update the plugin lifecycle:
  - app builds the plugin
    - calls `plugin.build`
    - registers the plugin
  - app starts the event loop
- event loop waits for `ready` of all registered plugins in the same
order
    - returns `true` by default
- then call all `finish` then all `cleanup` in the same order as
registered
  - then execute the schedule

In the case of the renderer, to avoid anything async:
- building the renderer plugin creates a detached task that will send
back the initialised renderer through a mutex in a resource
- `ready` will wait for the renderer to be present in the resource
- `finish` will take that renderer and place it in the expected
resources by other plugins
- other plugins (that expect the renderer to be available) `finish` are
called and they are able to set up their pipelines
- `cleanup` is called, only custom one is still for pipeline rendering

### For WebGPU support

- update the `build-wasm-example` script to support passing `--api
webgpu` that will build the example with WebGPU support
- feature for webgl2 was always enabled when building for wasm. it's now
in the default feature list and enabled on all platforms, so check for
this feature must also check that the target_arch is `wasm32`

---

## Migration Guide

- `Plugin::setup` has been renamed `Plugin::cleanup`
- `Plugin::finish` has been added, and plugins adding pipelines should
do it in this function instead of `Plugin::build`
```rust
// Before
impl Plugin for MyPlugin {
    fn build(&self, app: &mut App) {
        app.insert_resource::<MyResource>
            .add_systems(Update, my_system);

        let render_app = match app.get_sub_app_mut(RenderApp) {
            Ok(render_app) => render_app,
            Err(_) => return,
        };

        render_app
            .init_resource::<RenderResourceNeedingDevice>()
            .init_resource::<OtherRenderResource>();
    }
}

// After
impl Plugin for MyPlugin {
    fn build(&self, app: &mut App) {
        app.insert_resource::<MyResource>
            .add_systems(Update, my_system);
    
        let render_app = match app.get_sub_app_mut(RenderApp) {
            Ok(render_app) => render_app,
            Err(_) => return,
        };
    
        render_app
            .init_resource::<OtherRenderResource>();
    }

    fn finish(&self, app: &mut App) {
        let render_app = match app.get_sub_app_mut(RenderApp) {
            Ok(render_app) => render_app,
            Err(_) => return,
        };
    
        render_app
            .init_resource::<RenderResourceNeedingDevice>();
    }
}
```
2023-05-04 22:07:57 +00:00
Wybe Westra
abf12f3b3b
Fixed several missing links in docs. (#8117)
Links in the api docs are nice. I noticed that there were several places
where structs / functions and other things were referenced in the docs,
but weren't linked. I added the links where possible / logical.

---------

Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: François <mockersf@gmail.com>
2023-04-23 17:28:36 +00:00
JoJoJet
3ead10a3e0
Suppress the clippy::type_complexity lint (#8313)
# Objective

The clippy lint `type_complexity` is known not to play well with bevy.
It frequently triggers when writing complex queries, and taking the
lint's advice of using a type alias almost always just obfuscates the
code with no benefit. Because of this, this lint is currently ignored in
CI, but unfortunately it still shows up when viewing bevy code in an
IDE.

As someone who's made a fair amount of pull requests to this repo, I
will say that this issue has been a consistent thorn in my side. Since
bevy code is filled with spurious, ignorable warnings, it can be very
difficult to spot the *real* warnings that must be fixed -- most of the
time I just ignore all warnings, only to later find out that one of them
was real after I'm done when CI runs.

## Solution

Suppress this lint in all bevy crates. This was previously attempted in
#7050, but the review process ended up making it more complicated than
it needs to be and landed on a subpar solution.

The discussion in https://github.com/rust-lang/rust-clippy/pull/10571
explores some better long-term solutions to this problem. Since there is
no timeline on when these solutions may land, we should resolve this
issue in the meantime by locally suppressing these lints.

### Unresolved issues

Currently, these lints are not suppressed in our examples, since that
would require suppressing the lint in every single source file. They are
still ignored in CI.
2023-04-06 21:27:36 +00:00
ira
585baf0a66
Consistent screen-space coordinates (#8306)
# Objective

Make the coordinate systems of screen-space items (cursor position, UI,
viewports, etc.) consistent.

## Solution

Remove the weird double inversion of the cursor position's Y origin.
Once in bevy_winit to the bottom and then again in bevy_ui back to the
top.
This leaves the origin at the top left like it is in every other popular
app framework.

Update the `world_to_viewport`, `viewport_to_world`, and
`viewport_to_world_2d` methods to flip the Y origin (as they should
since the viewport coordinates were always relative to the top left).

## Migration Guide

`Window::cursor_position` now returns the position of the cursor
relative to the top left instead of the bottom left.
This now matches other screen-space coordinates like
`RelativeCursorPosition`, UI, and viewports.

The `world_to_viewport`, `viewport_to_world`, and `viewport_to_world_2d`
methods on `Camera` now return/take the viewport position relative to
the top left instead of the bottom left.

If you were using `world_to_viewport` to position a UI node the returned
`y` value should now be passed into the `top` field on `Style` instead
of the `bottom` field.
Note that this might shift the position of the UI node as it is now
anchored at the top.

If you were passing `Window::cursor_position` to `viewport_to_world` or
`viewport_to_world_2d` no change is necessary.
2023-04-05 22:32:36 +00:00
Mikkel Rasmussen
1575481429
Changed spelling linebreak_behaviour to linebreak_behavior (#8285)
# Objective

In the
[`Text`](3442a13d2c/crates/bevy_text/src/text.rs (L18))
struct the field is named: `linebreak_behaviour`, the British spelling
of _behavior_.
**Update**, also found: 
- `FileDragAndDrop::HoveredFileCancelled` 
- `TouchPhase::Cancelled`
- `Touches.just_cancelled`

The majority of all spelling is in the US but when you have a lot of
contributors across the world, sometimes
spelling differences can pop up in APIs such as in this case. 

For consistency, I think it would be worth a while to ensure that the
API is persistent.

Some examples:
`from_reflect.rs` has `DefaultBehavior`
TextStyle has `color` and uses the `Color` struct.
In `bevy_input/src/Touch.rs` `TouchPhase::Cancelled` and _canceled_ are
used interchangeably in the documentation

I've found that there is also the same type of discrepancies in the
documentation, though this is a low priority but is worth checking.
**Update**: I've now checked the documentation (See #8291)

## Solution

I've only renamed the inconsistencies that have breaking changes and
documentation pertaining to them. The rest of the documentation will be
changed via #8291.

Do note that the winit API is written with UK spelling, thus this may be
a cause for confusion:
`winit::event::TouchPhase::Cancelled => TouchPhase::Canceled`
`winit::event::WindowEvent::HoveredFileCancelled` -> Related to
`FileDragAndDrop::HoveredFileCanceled`

But I'm hoping to maybe outline other spelling inconsistencies in the
API, and maybe an addition to the contribution guide.

---

## Changelog

- `Text` field `linebreak_behaviour` has been renamed to
`linebreak_behavior`.
- Event `FileDragAndDrop::HoveredFileCancelled` has been renamed to
`HoveredFileCanceled`
- Function `Touches.just_cancelled` has been renamed to
`Touches.just_canceled`
- Event `TouchPhase::Cancelled` has been renamed to
`TouchPhase::Canceled`

## Migration Guide

Update where `linebreak_behaviour` is used to `linebreak_behavior`
Updated the event `FileDragAndDrop::HoveredFileCancelled` where used to
`HoveredFileCanceled`
Update `Touches.just_cancelled` where used as `Touches.just_canceled`
The event `TouchPhase::Cancelled` is now called `TouchPhase::Canceled`
2023-04-05 21:25:53 +00:00
Trevor Lovell
464d35aef5
docs: update docs and comments that still refer to stages (#8156)
# Objective
Documentation should no longer be using pre-stageless terminology to
avoid confusion.

## Solution
- update all docs referring to stages to instead refer to sets/schedules
where appropriate
- also mention `apply_system_buffers` for anything system-buffer-related
that previously referred to buffers being applied "at the end of a
stage"
2023-03-27 21:50:21 +00:00
Carl B. Smiley
353f2e0b37
Add documentation comments to bevy_winit (#8115)
# Objective

- [x] Add documentation comments to `bevy_winit`
- [x] Add `#![warn(missing_docs)]` to `bevy_winit`.

Relates to #3492

---------

Co-authored-by: François <mockersf@gmail.com>
2023-03-21 19:59:30 +00:00
Carter Anderson
aefe1f0739
Schedule-First: the new and improved add_systems (#8079)
Co-authored-by: Mike <mike.hsu@gmail.com>
2023-03-18 01:45:34 +00:00
François
71b1b35757
do not set hit test unconditionally on window creation (#7996) 2023-03-13 15:31:13 +00:00
JoJoJet
fd1af7c8b8
Replace multiple calls to add_system with add_systems (#8001) 2023-03-10 18:15:22 +00:00
张林伟
84711e38b1
Set cursor hittest during window creation (#7966) 2023-03-09 05:39:49 +00:00
Nolan Darilek
8d1f6ff7fa Integrate AccessKit (#6874)
# Objective

UIs created for Bevy cannot currently be made accessible. This PR aims to address that.

## Solution

Integrate AccessKit as a dependency, adding accessibility support to existing bevy_ui widgets.

## Changelog

### Added

* Integrate with and expose [AccessKit](https://accesskit.dev) for platform accessibility.
* Add `Label` for marking text specifically as a label for UI controls.
2023-03-01 22:45:04 +00:00
François
fae61ad249 create window as soon as possible (#7668)
# Objective

- Fixes #7612 
- Since #7493, windows started as unfocused

## Solution

- Creating the window at the end of the event loop after the resume event instead of at the beginning of the loop of the next event fixes the focus
2023-02-14 15:08:04 +00:00
ira
f69f1329e0 Fix Window feedback loop between the OS and Bevy (#7517)
# Objective

Fix #7377
Fix #7513

## Solution

Record the changes made to the Bevy `Window` from `winit` as 'canon' to avoid Bevy sending those changes back to `winit` again, causing a feedback loop.

## Changelog

* Removed `ModifiesWindows` system label.
  Neither `despawn_window` nor `changed_window` actually modify the `Window` component so all the `.after(ModifiesWindows)` shouldn't be necessary.
* Moved `changed_window` and `despawn_window` systems to `CoreStage::Last` to avoid systems making changes to the `Window` between `changed_window` and the end of the frame as they would be ignored.

## Migration Guide
The `ModifiesWindows` system label was removed.


Co-authored-by: devil-ira <justthecooldude@gmail.com>
2023-02-07 14:18:13 +00:00
François
7e0a9bfade IOS, Android... same thing (#7493)
# Objective

- Merge the examples on iOS and Android
- Make sure they both work from the same code

## Solution

- don't create window when not in an active state (from #6830)
- exit on suspend on Android (from #6830)
- automatically enable dependency feature of bevy_audio on android so that it works out of the box
- don't inverse y position of touch events
- reuse the same example for both Android and iOS

Fixes #4616
Fixes #4103
Fixes #3648
Fixes #3458
Fixes #3249
Fixes #86
2023-02-06 18:08:49 +00:00
Carter Anderson
dcc03724a5 Base Sets (#7466)
# Objective

NOTE: This depends on #7267 and should not be merged until #7267 is merged. If you are reviewing this before that is merged, I highly recommend viewing the Base Sets commit instead of trying to find my changes amongst those from #7267.

"Default sets" as described by the [Stageless RFC](https://github.com/bevyengine/rfcs/pull/45) have some [unfortunate consequences](https://github.com/bevyengine/bevy/discussions/7365).

## Solution

This adds "base sets" as a variant of `SystemSet`:

A set is a "base set" if `SystemSet::is_base` returns `true`. Typically this will be opted-in to using the `SystemSet` derive:

```rust
#[derive(SystemSet, Clone, Hash, Debug, PartialEq, Eq)]
#[system_set(base)]
enum MyBaseSet {
  A,
  B,
}
``` 

**Base sets are exclusive**: a system can belong to at most one "base set". Adding a system to more than one will result in an error. When possible we fail immediately during system-config-time with a nice file + line number. For the more nested graph-ey cases, this will fail at the final schedule build. 

**Base sets cannot belong to other sets**: this is where the word "base" comes from

Systems and Sets can only be added to base sets using `in_base_set`. Calling `in_set` with a base set will fail. As will calling `in_base_set` with a normal set.

```rust
app.add_system(foo.in_base_set(MyBaseSet::A))
       // X must be a normal set ... base sets cannot be added to base sets
       .configure_set(X.in_base_set(MyBaseSet::A))
```

Base sets can still be configured like normal sets:

```rust
app.add_system(MyBaseSet::B.after(MyBaseSet::Ap))
``` 

The primary use case for base sets is enabling a "default base set":

```rust
schedule.set_default_base_set(CoreSet::Update)
  // this will belong to CoreSet::Update by default
  .add_system(foo)
  // this will override the default base set with PostUpdate
  .add_system(bar.in_base_set(CoreSet::PostUpdate))
```

This allows us to build apis that work by default in the standard Bevy style. This is a rough analog to the "default stage" model, but it use the new "stageless sets" model instead, with all of the ordering flexibility (including exclusive systems) that it provides.

---

## Changelog

- Added "base sets" and ported CoreSet to use them.

## Migration Guide

TODO
2023-02-06 03:10:08 +00:00
Alice Cecile
206c7ce219 Migrate engine to Schedule v3 (#7267)
Huge thanks to @maniwani, @devil-ira, @hymm, @cart, @superdump and @jakobhellermann for the help with this PR.

# Objective

- Followup #6587.
- Minimal integration for the Stageless Scheduling RFC: https://github.com/bevyengine/rfcs/pull/45

## Solution

- [x]  Remove old scheduling module
- [x] Migrate new methods to no longer use extension methods
- [x] Fix compiler errors
- [x] Fix benchmarks
- [x] Fix examples
- [x] Fix docs
- [x] Fix tests

## Changelog

### Added

- a large number of methods on `App` to work with schedules ergonomically
- the `CoreSchedule` enum
- `App::add_extract_system` via the `RenderingAppExtension` trait extension method
- the private `prepare_view_uniforms` system now has a public system set for scheduling purposes, called `ViewSet::PrepareUniforms`

### Removed

- stages, and all code that mentions stages
- states have been dramatically simplified, and no longer use a stack
- `RunCriteriaLabel`
- `AsSystemLabel` trait
- `on_hierarchy_reports_enabled` run criteria (now just uses an ad hoc resource checking run condition)
- systems in `RenderSet/Stage::Extract` no longer warn when they do not read data from the main world
- `RunCriteriaLabel`
- `transform_propagate_system_set`: this was a nonstandard pattern that didn't actually provide enough control. The systems are already `pub`: the docs have been updated to ensure that the third-party usage is clear.

### Changed

- `System::default_labels` is now `System::default_system_sets`.
- `App::add_default_labels` is now `App::add_default_sets`
- `CoreStage` and `StartupStage` enums are now `CoreSet` and `StartupSet`
- `App::add_system_set` was renamed to `App::add_systems`
- The `StartupSchedule` label is now defined as part of the `CoreSchedules` enum
-  `.label(SystemLabel)` is now referred to as `.in_set(SystemSet)`
- `SystemLabel` trait was replaced by `SystemSet`
- `SystemTypeIdLabel<T>` was replaced by `SystemSetType<T>`
- The `ReportHierarchyIssue` resource now has a public constructor (`new`), and implements `PartialEq`
- Fixed time steps now use a schedule (`CoreSchedule::FixedTimeStep`) rather than a run criteria.
- Adding rendering extraction systems now panics rather than silently failing if no subapp with the `RenderApp` label is found.
- the `calculate_bounds` system, with the `CalculateBounds` label, is now in `CoreSet::Update`, rather than in `CoreSet::PostUpdate` before commands are applied. 
- `SceneSpawnerSystem` now runs under `CoreSet::Update`, rather than `CoreStage::PreUpdate.at_end()`.
- `bevy_pbr::add_clusters` is no longer an exclusive system
- the top level `bevy_ecs::schedule` module was replaced with `bevy_ecs::scheduling`
- `tick_global_task_pools_on_main_thread` is no longer run as an exclusive system. Instead, it has been replaced by `tick_global_task_pools`, which uses a `NonSend` resource to force running on the main thread.

## Migration Guide

- Calls to `.label(MyLabel)` should be replaced with `.in_set(MySet)`
- Stages have been removed. Replace these with system sets, and then add command flushes using the `apply_system_buffers` exclusive system where needed.
- The `CoreStage`, `StartupStage, `RenderStage` and `AssetStage`  enums have been replaced with `CoreSet`, `StartupSet, `RenderSet` and `AssetSet`. The same scheduling guarantees have been preserved.
  - Systems are no longer added to `CoreSet::Update` by default. Add systems manually if this behavior is needed, although you should consider adding your game logic systems to `CoreSchedule::FixedTimestep` instead for more reliable framerate-independent behavior.
  - Similarly, startup systems are no longer part of `StartupSet::Startup` by default. In most cases, this won't matter to you.
  - For example, `add_system_to_stage(CoreStage::PostUpdate, my_system)` should be replaced with 
  - `add_system(my_system.in_set(CoreSet::PostUpdate)`
- When testing systems or otherwise running them in a headless fashion, simply construct and run a schedule using `Schedule::new()` and `World::run_schedule` rather than constructing stages
- Run criteria have been renamed to run conditions. These can now be combined with each other and with states.
- Looping run criteria and state stacks have been removed. Use an exclusive system that runs a schedule if you need this level of control over system control flow.
- For app-level control flow over which schedules get run when (such as for rollback networking), create your own schedule and insert it under the `CoreSchedule::Outer` label.
- Fixed timesteps are now evaluated in a schedule, rather than controlled via run criteria. The `run_fixed_timestep` system runs this schedule between `CoreSet::First` and `CoreSet::PreUpdate` by default.
- Command flush points introduced by `AssetStage` have been removed. If you were relying on these, add them back manually.
- Adding extract systems is now typically done directly on the main app. Make sure the `RenderingAppExtension` trait is in scope, then call `app.add_extract_system(my_system)`.
- the `calculate_bounds` system, with the `CalculateBounds` label, is now in `CoreSet::Update`, rather than in `CoreSet::PostUpdate` before commands are applied. You may need to order your movement systems to occur before this system in order to avoid system order ambiguities in culling behavior.
- the `RenderLabel` `AppLabel` was renamed to `RenderApp` for clarity
- `App::add_state` now takes 0 arguments: the starting state is set based on the `Default` impl.
- Instead of creating `SystemSet` containers for systems that run in stages, simply use `.on_enter::<State::Variant>()` or its `on_exit` or `on_update` siblings.
- `SystemLabel` derives should be replaced with `SystemSet`. You will also need to add the `Debug`, `PartialEq`, `Eq`, and `Hash` traits to satisfy the new trait bounds.
- `with_run_criteria` has been renamed to `run_if`. Run criteria have been renamed to run conditions for clarity, and should now simply return a bool.
- States have been dramatically simplified: there is no longer a "state stack". To queue a transition to the next state, call `NextState::set`

## TODO

- [x] remove dead methods on App and World
- [x] add `App::add_system_to_schedule` and `App::add_systems_to_schedule`
- [x] avoid adding the default system set at inappropriate times
- [x] remove any accidental cycles in the default plugins schedule
- [x] migrate benchmarks
- [x] expose explicit labels for the built-in command flush points
- [x] migrate engine code
- [x] remove all mentions of stages from the docs
- [x] verify docs for States
- [x] fix uses of exclusive systems that use .end / .at_start / .before_commands
- [x] migrate RenderStage and AssetStage
- [x] migrate examples
- [x] ensure that transform propagation is exported in a sufficiently public way (the systems are already pub)
- [x] ensure that on_enter schedules are run at least once before the main app
- [x] re-enable opt-in to execution order ambiguities
- [x] revert change to `update_bounds` to ensure it runs in `PostUpdate`
- [x] test all examples
  - [x] unbreak directional lights
  - [x] unbreak shadows (see 3d_scene, 3d_shape, lighting, transparaency_3d examples)
  - [x] game menu example shows loading screen and menu simultaneously
  - [x] display settings menu is a blank screen
  - [x] `without_winit` example panics
- [x] ensure all tests pass
  - [x] SubApp doc test fails
  - [x] runs_spawn_local tasks fails
  - [x] [Fix panic_when_hierachy_cycle test hanging](https://github.com/alice-i-cecile/bevy/pull/120)

## Points of Difficulty and Controversy

**Reviewers, please give feedback on these and look closely**

1.  Default sets, from the RFC, have been removed. These added a tremendous amount of implicit complexity and result in hard to debug scheduling errors. They're going to be tackled in the form of "base sets" by @cart in a followup.
2. The outer schedule controls which schedule is run when `App::update` is called.
3. I implemented `Label for `Box<dyn Label>` for our label types. This enables us to store schedule labels in concrete form, and then later run them. I ran into the same set of problems when working with one-shot systems. We've previously investigated this pattern in depth, and it does not appear to lead to extra indirection with nested boxes.
4. `SubApp::update` simply runs the default schedule once. This sucks, but this whole API is incomplete and this was the minimal changeset.
5. `time_system` and `tick_global_task_pools_on_main_thread` no longer use exclusive systems to attempt to force scheduling order
6. Implemetnation strategy for fixed timesteps
7. `AssetStage` was migrated to `AssetSet` without reintroducing command flush points. These did not appear to be used, and it's nice to remove these bottlenecks.
8. Migration of `bevy_render/lib.rs` and pipelined rendering. The logic here is unusually tricky, as we have complex scheduling requirements.

## Future Work (ideally before 0.10)

- Rename schedule_v3 module to schedule or scheduling
- Add a derive macro to states, and likely a `EnumIter` trait of some form
- Figure out what exactly to do with the "systems added should basically work by default" problem
- Improve ergonomics for working with fixed timesteps and states
- Polish FixedTime API to match Time
- Rebase and merge #7415
- Resolve all internal ambiguities (blocked on better tools, especially #7442)
- Add "base sets" to replace the removed default sets.
2023-02-06 02:04:50 +00:00
Aceeri
67826b21d4 Replace RemovedComponents<T> backing with Events<Entity> (#5680)
# Objective
Removal events are unwieldy and require some knowledge of when to put systems that need to catch events for them, it is very easy to end up missing one and end up with memory leak-ish issues where you don't clean up after yourself.

## Solution
Consolidate removals with the benefits of `Events<...>` (such as double buffering and per system ticks for reading the events) and reduce the special casing of it, ideally I was hoping to move the removals to a `Resource` in the world, but that seems a bit more rough to implement/maintain because of double mutable borrowing issues.

This doesn't go the full length of change detection esque removal detection a la https://github.com/bevyengine/rfcs/pull/44.
Just tries to make the current workflow a bit more user friendly so detecting removals isn't such a scheduling nightmare.

---

## Changelog
- RemovedComponents<T> is now backed by an `Events<Entity>` for the benefits of double buffering.

## Migration Guide
- Add a `mut` for `removed: RemovedComponents<T>` since we are now modifying an event reader internally.
- Iterating over removed components now requires `&mut removed_components` or `removed_components.iter()` instead of `&removed_components`.
2023-02-04 20:53:37 +00:00
François
3900b48c88 update winit to 0.28 (#7480)
# Objective

- Update winit to 0.28

## Solution

- Small API change 
- A security advisory has been added for a unmaintained crate used by a dependency of winit build script for wayland

I didn't do anything for Android support in this PR though it should be fixable, it should be done in a separate one, maybe https://github.com/bevyengine/bevy/pull/6830 

---

## Changelog

- `window.always_on_top` has been removed, you can now use `window.window_level`

## Migration Guide

before:
```rust
    app.new()
        .add_plugins(DefaultPlugins.set(WindowPlugin {
            primary_window: Some(Window {
                always_on_top: true,
                ..default()
            }),
            ..default()
        }));
```

after:
```rust
    app.new()
        .add_plugins(DefaultPlugins.set(WindowPlugin {
            primary_window: Some(Window {
                window_level: bevy:🪟:WindowLevel::AlwaysOnTop,
                ..default()
            }),
            ..default()
        }));
```
2023-02-03 16:41:39 +00:00
Alice Cecile
5d514fb24f Reduce internal system order ambiguities, and add an example explaining them (#7383)
# Objective

- Bevy should not have any "internal" execution order ambiguities. These clutter the output of user-facing error reporting, and can result in nasty, nondetermistic, very difficult to solve bugs.
- Verifying this currently involves repeated non-trivial manual work. 

## Solution

- [x] add an example to quickly check this
- ~~[ ] ensure that this example panics if there are any unresolved ambiguities~~
- ~~[ ] run the example in CI 😈~~

There's one tricky ambiguity left, between UI and animation. I don't have the tools to fix this without system set configuration, so the remaining work is going to be left to #7267 or another PR after that.

```
2023-01-27T18:38:42.989405Z  INFO bevy_ecs::schedule::ambiguity_detection: Execution order ambiguities detected, you might want to add an explicit dependency relation between some of these systems:
 * Parallel systems:
 -- "bevy_animation::animation_player" and "bevy_ui::flex::flex_node_system"
    conflicts: ["bevy_transform::components::transform::Transform"]
  ```

## Changelog

Resolved internal execution order ambiguities for:
1. Transform propagation (ignored, we need smarter filter checking).
2. Gamepad processing (fixed).
3. bevy_winit's window handling (fixed).
4. Cascaded shadow maps and perspectives (fixed).

Also fixed a desynchronized state bug that could occur when the `Window` component is removed and then added to the same entity in a single frame.
2023-01-31 01:47:00 +00:00
François
3999365bc1 add Input Method Editor support (#7325)
# Objective

- Fix #7315
- Add IME support

## Solution

- Add two new fields to `Window`, to control if IME is enabled and the candidate box position

This allows the use of dead keys which are needed in French, or the full IME experience to type using Pinyin

I also added a basic general text input example that can handle IME input.

https://user-images.githubusercontent.com/8672791/213941353-5ed73a73-5dd1-4e66-a7d6-a69b49694c52.mp4
2023-01-29 20:27:29 +00:00
Johan Klokkhammer Helsing
7ebc68bb84 Allow not preventing default event behaviors on wasm (#7304)
# Objective

On wasm, bevy applications currently prevent any of the normal browser hotkeys from working normally (Ctrl+R, F12, F5, Ctrl+F5, tab, etc.).

Some of those events you may want to override, perhaps you can hold the tab key for showing in-game stats?

However, if you want to make a well-behaved game, you probably don't want to needlessly prevent that behavior unless you have a good reason.

Secondary motivation: Also, consider the workaround presented here to get audio working: https://developer.chrome.com/blog/web-audio-autoplay/#moving-forward ; It won't work (for keydown events) if we stop event propagation.

## Solution

- Winit has a field that allows it to not stop event propagation, expose it on the window settings to allow the user to choose the desired behavior. Default to `true` for backwards compatibility.

---

## Changelog

- Added `Window::prevent_default_event_handling` . This allows bevy apps to not override default browser behavior on hotkeys like F5, F12, Ctrl+R etc.
2023-01-22 23:35:32 +00:00
François
a94830f0c9 break feedback loop when moving cursor (#7298)
# Objective

- Fixes #7294

## Solution

- Do not trigger change detection when setting the cursor position from winit

When moving the cursor continuously, Winit sends events:
- CursorMoved(0)
- CursorMoved(1)
- => start of Bevy schedule execution
- CursorMoved(2)
- CursorMoved(3)
- <= End of Bevy schedule execution

if Bevy schedule runs after the event 1, events 2 and 3 would happen during the execution but would be read only on the next system run. During the execution, the system would detect a change on cursor position, and send back an order to winit to move it back to 1, so event 2 and 3 would be ignored. By bypassing change detection when setting the cursor from winit event, it doesn't trigger sending back that change to winit out of order.
2023-01-21 00:01:28 +00:00
François
0804136dcd expose cursor position with scale (#7297)
# Objective

- Fixes #7288
- Do not expose access directly to cursor position as it is the physical position, ignoring scale

## Solution

- Make cursor position private
- Expose getter/setter on the window to have access to the scale
2023-01-20 14:25:24 +00:00
Aceeri
ddfafab971 Windows as Entities (#5589)
# Objective

Fix https://github.com/bevyengine/bevy/issues/4530

- Make it easier to open/close/modify windows by setting them up as `Entity`s with a `Window` component.
- Make multiple windows very simple to set up. (just add a `Window` component to an entity and it should open)

## Solution

- Move all properties of window descriptor to ~components~ a component.
- Replace `WindowId` with `Entity`.
- ~Use change detection for components to update backend rather than events/commands. (The `CursorMoved`/`WindowResized`/... events are kept for user convenience.~
  Check each field individually to see what we need to update, events are still kept for user convenience.

---

## Changelog

- `WindowDescriptor` renamed to `Window`.
    - Width/height consolidated into a `WindowResolution` component.
    - Requesting maximization/minimization is done on the [`Window::state`] field.
- `WindowId` is now `Entity`.

## Migration Guide

- Replace `WindowDescriptor` with `Window`.
    - Change `width` and `height` fields in a `WindowResolution`, either by doing
      ```rust
      WindowResolution::new(width, height) // Explicitly
      // or using From<_> for tuples for convenience
      (1920., 1080.).into()
      ```
- Replace any `WindowCommand` code to just modify the `Window`'s fields directly  and creating/closing windows is now by spawning/despawning an entity with a `Window` component like so:
  ```rust
  let window = commands.spawn(Window { ... }).id(); // open window
  commands.entity(window).despawn(); // close window
  ```

## Unresolved
- ~How do we tell when a window is minimized by a user?~
  ~Currently using the `Resize(0, 0)` as an indicator of minimization.~
  No longer attempting to tell given how finnicky this was across platforms, now the user can only request that a window be maximized/minimized.
  
 ## Future work
 - Move `exit_on_close` functionality out from windowing and into app(?)
 - https://github.com/bevyengine/bevy/issues/5621
 - https://github.com/bevyengine/bevy/issues/7099
 - https://github.com/bevyengine/bevy/issues/7098


Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2023-01-19 00:38:28 +00:00
Stephen Martindale
f0c504947c Docs: App::run() might never return; effect of WinitSettings::return_from_run. (#7228)
# Objective

See:

- https://github.com/bevyengine/bevy/issues/7067#issuecomment-1381982285
  - (This does not fully close that issue in my opinion.)
- https://discord.com/channels/691052431525675048/1063454009769340989

## Solution

This merge request adds documentation:

1. Alert users to the fact that `App::run()` might never return and code placed after it might never be executed.
2. Makes `winit::WinitSettings::return_from_run` discoverable.
3. Better explains why `winit::WinitSettings::return_from_run` is discouraged and better links to up-stream docs. on that topic.
4. Adds notes to the `app/return_after_run.rs` example which otherwise promotes a feature that carries caveats.

Furthermore, w.r.t `winit::WinitSettings::return_from_run`:

- Broken links to `winit` docs are fixed.
- Links now point to BOTH `EventLoop::run()` and `EventLoopExtRunReturn::run_return()` which are the salient up-stream pages and make more sense, taken together.
- Collateral damage: "Supported platforms" heading; disambiguation of "run" → `App::run()`; links.
   
## Future Work

I deliberately structured the "`run()` might not return" section under `App::run()` to allow for alternative patterns (e.g. `AppExit` event, `WindowClosed` event) to be listed or mentioned, beneath it, in the future.
2023-01-18 23:02:38 +00:00
VitalyR
9ff111e24c fix cursor grab issue (#7010)
# Objective

- Set the cursor grab mode after the window is built, fix #7007, clean some conversion code.

## Solution

- Set the cursor grab mode after the window is built.
2023-01-04 23:00:12 +00:00
ira
00fa0d8cf2 Apply WindowDescriptor settings in all modes (#6934)
# Objective
Some settings were only applied in windowed mode.
Fix the issue in #6933 

# Solution
Always apply the settings.


Co-authored-by: devil-ira <justthecooldude@gmail.com>
2022-12-16 20:14:11 +00:00
IceSentry
17b7025a78 Fix set_cursor_grab_mode to try an alternative mode before giving an error (#6599)
# Objective

- Closes https://github.com/bevyengine/bevy/issues/6590
- The grab mode is platform dependent, this is problematic for bevy users since we can't easily use the recommended way to detect if the feature works like the winit docs recommend https://docs.rs/winit/0.27.5/winit/window/struct.Window.html#method.set_cursor_grab

## Solution

Try to use the grab mode that was requested, if it fails use the other one. Only then log an error if it fails after this step.
2022-11-26 13:10:11 +00:00
Jer
b3e45b75d6 Expose set_cursor_hittest() from winit (#6664)
# Objective

- Bevy should be usable to create 'overlay' type apps, where the input is not captured by Bevy, but passed down/into a target app, or to allow passive displays/widgets etc.
 
## Solution

- the `winit:🪟:Window` already has a `set_cursor_hittest()` which basically does this for mouse input events, so I've exposed it (trying to copy the style laid out in the existing wrappings, and added a simple demo.

---

## Changelog

- Added `hittest` to `WindowAttributes`
- Added the `hittest`'s setters/getters
- Modified the `WindowBuilder`
- Modifed the `WindowDescriptor`'s `Default` impl.
- Added an example `cargo run --example fallthrough`
2022-11-21 12:59:10 +00:00
Patrick Towles
cb8fe5b7fd Removed Mobile Touch event y-axis flip (#6597)
# Objective

Fix android touch events being flipped.  Only removed test for android, don't have ios device to test with.  Tested with emulator and physical device.

## Solution

Remove check, no longer needed with coordinate change in 0.9
2022-11-18 22:16:54 +00:00
Mike
8ebd4d909c add span to winit event handler (#6612)
# Objective

- Add a span for the winit event handler. I've found this useful in my PR for pipelined rendering and I've seen it come up in a few other contexts now.

![image](https://user-images.githubusercontent.com/2180432/201588888-5dc02063-2c41-471b-8937-a71aeaf174b4.png)
2022-11-14 23:08:31 +00:00
laundmo
635320f172 Expose winit always_on_top (#6527)
# Objective

I needed a window which is always on top, to create a overlay app.

## Solution

expose the `always_on_top` property of winit in bevy's `WindowDescriptor` as a boolean flag

---

## Changelog

### Added
- add `WindowDescriptor.always_on_top` which configures a window to stay on top.
2022-11-14 22:34:29 +00:00
ira
99c815fd00 Move the cursor's origin back to the bottom-left (#6533)
This reverts commit 8429b6d6ca as discussed in #6522.

I tested that the game_menu example works as it should.

Co-authored-by: devil-ira <justthecooldude@gmail.com>
2022-11-10 20:10:51 +00:00
ira
d688ba5f29 Add send_event and friends to WorldCell (#6515)
# Objective

Copy `send_event` and friends from `World` to `WorldCell`.

Clean up `bevy_winit` using `WorldCell::send_event`.

## Changelog

Added `send_event`, `send_event_default`, and `send_event_batch` to `WorldCell`.

Co-authored-by: devil-ira <justthecooldude@gmail.com>
2022-11-07 21:25:31 +00:00
Carter Anderson
e5905379de Use new let-else syntax where possible (#6463)
# Objective

Let-else syntax is now stable!

## Solution

Use it where possible!
2022-11-04 21:32:09 +00:00
François
ca82fa883b do not set cursor grab on window creation if not asked for (#6381)
# Objective

- Bevy main crashs on Safari mobile
- On Safari mobile, calling winit_window.set_cursor_grab(true) fails as the API is not implemented (as there is no cursor on Safari mobile, the api doesn't make sense there). I don't know about other mobile browsers

## Solution

- Do not call the api to release cursor grab on window creation, as the cursor is not grabbed anyway at this point
- This is #3617 which was lost in #6218
2022-10-31 16:12:18 +00:00
Jakob Hellermann
e71c4d2802 fix nightly clippy warnings (#6395)
# Objective

- fix new clippy lints before they get stable and break CI

## Solution

- run `clippy --fix` to auto-fix machine-applicable lints
- silence `clippy::should_implement_trait` for `fn HandleId::default<T: Asset>`

## Changes
- always prefer `format!("{inline}")` over `format!("{}", not_inline)`
- prefer `Box::default` (or `Box::<T>::default` if necessary) over `Box::new(T::default())`
2022-10-28 21:03:01 +00:00
VitalyR
c313e21d65 Update wgpu to 0.14.0, naga to 0.10.0, winit to 0.27.4, raw-window-handle to 0.5.0, ndk to 0.7 (#6218)
# Objective

- Update `wgpu` to 0.14.0, `naga` to `0.10.0`, `winit` to 0.27.4, `raw-window-handle` to 0.5.0, `ndk` to 0.7.

## Solution

---

## Changelog

### Changed

- Changed `RawWindowHandleWrapper` to `RawHandleWrapper` which wraps both `RawWindowHandle` and `RawDisplayHandle`, which satisfies the `impl HasRawWindowHandle and HasRawDisplayHandle` that `wgpu` 0.14.0 requires.

- Changed `bevy_window::WindowDescriptor`'s `cursor_locked` to `cursor_grab_mode`, change its type from `bool` to `bevy_window::CursorGrabMode`.

## Migration Guide

- Adjust usage of `bevy_window::WindowDescriptor`'s `cursor_locked` to `cursor_grab_mode`, and adjust its type from `bool` to `bevy_window::CursorGrabMode`.
2022-10-19 17:40:23 +00:00
targrub
964b047466 Make raw_window_handle field in Window and ExtractedWindow an Option. (#6114)
# Objective

- Trying to make it possible to do write tests that don't require a raw window handle.
- Fixes https://github.com/bevyengine/bevy/issues/6106.

## Solution

- Make the interface and type changes.  Avoid accessing `None`.
---

## Changelog

- Converted `raw_window_handle` field in both `Window` and `ExtractedWindow` to `Option<RawWindowHandleWrapper>`.
- Revised accessor function `Window::raw_window_handle()` to return `Option<RawWindowHandleWrapper>`.
- Skip conditions in loops that would require a raw window handle (to create a `Surface`, for example).

## Migration Guide

`Window::raw_window_handle()` now returns `Option<RawWindowHandleWrapper>`.


Co-authored-by: targrub <62773321+targrub@users.noreply.github.com>
2022-10-17 14:19:24 +00:00
Michel van der Hulst
6ce7ce208e Change UI coordinate system to have origin at top left corner (#6000)
# Objective
Fixes #5572

## Solution

Approach is to invert the Y-axis of the UI Camera by changing the UI projection matrix to render the UI upside down.

After that I'm trying to fix all issues, that pop up:
- interaction expected the "old" position
- images and text were displayed upside-down
- baseline of text was based on the top of the glyph instead of bottom

... probably a lot more.

---

Result when running examples:
<details>
    <summary>Button example</summary>

main branch:
![button main](https://user-images.githubusercontent.com/4232644/190856087-61dd1d98-42b5-4238-bd97-149744ddfeba.png)
this pr:
![button pr](https://user-images.githubusercontent.com/4232644/190856097-3f4bc97a-ed15-4e97-b7f1-2b2dd6bb8b14.png)

</details>

<details>
    <summary>Text example</summary>

m
![text main](https://user-images.githubusercontent.com/4232644/192142831-4cf19aa1-f49a-485e-af7b-374d6f5c396c.png)
ain branch: 


this pr:
![text pr fixed](https://user-images.githubusercontent.com/4232644/192142829-c433db3b-32e1-4ee8-b493-0b4a4d9c8e70.png)


</details>

<details>
    <summary>Text debug example</summary>

main branch:
![text_debug main](https://user-images.githubusercontent.com/4232644/192142822-940aefa6-e502-410b-8da4-5570f77b5df2.png)

this pr:
![text_debug pr fixed](https://user-images.githubusercontent.com/4232644/194547010-8c968f5c-5a71-4ffc-871d-790c06d48016.png)

</details>

<details>
    <summary>Transparency UI example</summary>

main branch:
![transparency_ui main](https://user-images.githubusercontent.com/4232644/190856172-328c60fe-3622-4598-97d5-2f1595db13b3.png)


this pr:
![transperency_ui pr](https://user-images.githubusercontent.com/4232644/190856179-a2dafb99-41ea-45a9-9dd6-400fa3ef24b9.png)

</details>

<details>
    <summary>UI example</summary>

**ui example**
main branch:
![ui main](https://user-images.githubusercontent.com/4232644/192142812-e20ba31a-6841-46d9-a785-4198cf22dc99.png)

this pr:
![ui pr fixed](https://user-images.githubusercontent.com/4232644/192142788-cc0b74e0-7710-4faa-b5a2-60270a5da77c.png)

</details>

## Changelog
UI coordinate system and cursor position was changed from bottom left origin, y+ up to top left origin, y+ down.

## Migration Guide
All flex layout should be inverted (ColumnReverse => Column, FlexStart => FlexEnd, WrapReverse => Wrap)
System where dealing with cursor position should be changed to account for cursor position being based on the top left instead of bottom left
2022-10-11 12:51:44 +00:00
shuo
6b889774cb disable window pre creation for ios (#5883)
# Objective

Fixes #5882 

## Solution

Per https://github.com/rust-windowing/winit/issues/1705, the root cause is "UIWindow should be created inside UIApplicationMain". Currently, there are two places to create UIWindow, one is Plugin's build function, which is not inside UIApplicationMain. Just comment it out, and it works.
2022-09-06 15:06:17 +00:00
ira
28c16b9713 Support monitor selection for all window modes. (#5878)
# Objective
Support monitor selection for all window modes.
Fixes #5875.

## Changelog

* Moved `MonitorSelection` out of `WindowPosition::Centered`, into `WindowDescriptor`.
* `WindowPosition::At` is now relative to the monitor instead of being in 'desktop space'.
* Renamed `MonitorSelection::Number` to `MonitorSelection::Index` for clarity.
* Added `WindowMode` to the prelude.
* `Window::set_position` is now relative to a monitor and takes a `MonitorSelection` as argument.

## Migration Guide

`MonitorSelection` was moved out of `WindowPosition::Centered`, into `WindowDescriptor`.
`MonitorSelection::Number` was renamed to `MonitorSelection::Index`.
```rust
// Before
.insert_resource(WindowDescriptor {
    position: WindowPosition::Centered(MonitorSelection::Number(1)),
    ..default()
})
// After
.insert_resource(WindowDescriptor {
    monitor: MonitorSelection::Index(1),
    position: WindowPosition::Centered,
    ..default()
})
```
`Window::set_position` now takes a `MonitorSelection` as argument.
```rust
window.set_position(MonitorSelection::Current, position);
```

Co-authored-by: devil-ira <justthecooldude@gmail.com>
2022-09-06 14:45:44 +00:00
ira
c3cdb12149 Remove unnecessary unsafe Send and Sync impl for WinitWindows on wasm. (#5863)
# Objective

https://github.com/bevyengine/bevy/pull/503 added these.
I don't know what problem it solved, the PR doesn't say and the code didn't make it obvious to me.

## Solution

AFAIK removing unsafe `Send`/`Sync` impls can't introduce unsoundness.
Yeet.

## Migration Guide
Why tho.


Co-authored-by: devil-ira <justthecooldude@gmail.com>
2022-09-02 16:17:46 +00:00
Rob Parrett
e874b91dda Fix window centering when scale_factor is not 1.0 (#5582)
# Objective

Fixes #5581

## Solution

`Window::scale_factor` already has logic for selecting the overridden or actual scale factor, so use it.

I tested this with the displays I have access to, but more testing would be nice. This seems like a pretty straightforward bug/fix though.

## Changelog

### Fixed

Fixed window centering on high-dpi displays.
2022-08-30 20:13:38 +00:00
ira
992681b59b Make Resource trait opt-in, requiring #[derive(Resource)] V2 (#5577)
*This PR description is an edited copy of #5007, written by @alice-i-cecile.*
# Objective
Follow-up to https://github.com/bevyengine/bevy/pull/2254. The `Resource` trait currently has a blanket implementation for all types that meet its bounds.

While ergonomic, this results in several drawbacks:

* it is possible to make confusing, silent mistakes such as inserting a function pointer (Foo) rather than a value (Foo::Bar) as a resource
* it is challenging to discover if a type is intended to be used as a resource
* we cannot later add customization options (see the [RFC](https://github.com/bevyengine/rfcs/blob/main/rfcs/27-derive-component.md) for the equivalent choice for Component).
* dependencies can use the same Rust type as a resource in invisibly conflicting ways
* raw Rust types used as resources cannot preserve privacy appropriately, as anyone able to access that type can read and write to internal values
* we cannot capture a definitive list of possible resources to display to users in an editor
## Notes to reviewers
 * Review this commit-by-commit; there's effectively no back-tracking and there's a lot of churn in some of these commits.
   *ira: My commits are not as well organized :')*
 * I've relaxed the bound on Local to Send + Sync + 'static: I don't think these concerns apply there, so this can keep things simple. Storing e.g. a u32 in a Local is fine, because there's a variable name attached explaining what it does.
 * I think this is a bad place for the Resource trait to live, but I've left it in place to make reviewing easier. IMO that's best tackled with https://github.com/bevyengine/bevy/issues/4981.

## Changelog
`Resource` is no longer automatically implemented for all matching types. Instead, use the new `#[derive(Resource)]` macro.

## Migration Guide
Add `#[derive(Resource)]` to all types you are using as a resource.

If you are using a third party type as a resource, wrap it in a tuple struct to bypass orphan rules. Consider deriving `Deref` and `DerefMut` to improve ergonomics.

`ClearColor` no longer implements `Component`. Using `ClearColor` as a component in 0.8 did nothing.
Use the `ClearColorConfig` in the `Camera3d` and `Camera2d` components instead.


Co-authored-by: Alice <alice.i.cecile@gmail.com>
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: devil-ira <justthecooldude@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2022-08-08 21:36:35 +00:00