[Merged by Bors] - Add helpers to send `Events` from `World` #5355

aevyrie · 2022-07-17T16:04:44Z

Objective

With access to World, it's not obvious how to send an event.
This is especially useful if you are writing a Command that needs to send an Event.
Events are a first-class construct in bevy, even though they are just Resources under the hood. Their methods should be discoverable.

Solution

Provide a simple helpers to send events through Res<Events<T>>.

Changelog

send_event, send_default_event, and send_event_batch methods added to World.

alice-i-cecile · 2022-07-17T16:31:35Z

send_event and send_default_event for legibility please :)

crates/bevy_ecs/src/world/mod.rs

alice-i-cecile · 2022-07-17T16:34:11Z

Previously attempted in #3839.

Nilirad

I have mixed feelings about using the noun-verb grammar, but I wouldn't block that.

I would have suggested you to link to EventWriter examples, but there are none. 😐

crates/bevy_ecs/src/world/mod.rs

Co-authored-by: Federico Rinaldi <[email protected]>

mockersf

Could you also add the send_batch method to have the same features that the EventWriter?

Nilirad

I prefer to write “Event” in monospace since we're linking to the trait itself and we're passing a type that implements it as an argument.

I'm OK for now to link to the trait instead of the module in the docs, since there is practically no documentation at the module level. This can be changed later with an event docs overhaul.

I prefer that the suggestion made in this comment should be applied before merging.

crates/bevy_ecs/src/world/mod.rs

Co-authored-by: Federico Rinaldi <[email protected]>

aevyrie · 2022-07-19T01:38:17Z

Added send_batch. I refactored the other two methods as special cases of send_batch to keep the error checks nice and DRY. 😛

crates/bevy_ecs/src/world/mod.rs

alice-i-cecile · 2022-07-19T20:53:47Z

bors r+

# Objective - With access to `World`, it's not obvious how to send an event. - This is especially useful if you are writing a `Command` that needs to send an `Event`. - `Events` are a first-class construct in bevy, even though they are just `Resources` under the hood. Their methods should be discoverable. ## Solution - Provide a simple helpers to send events through `Res<Events<T>>`. --- ## Changelog > `send_event`, `send_default_event`, and `send_event_batch` methods added to `World`.

bors · 2022-07-19T21:13:20Z

Pull request successfully merged into main.

Build succeeded:

mockersf · 2022-07-19T21:30:34Z

missed to propose a rename before this was merged: #5383

after #5355, three methods were added on world: * `send_event` * `send_event_batch` * `send_default_event` rename `send_default_event` to `send_event_default` for better discoverability

# Objective - With access to `World`, it's not obvious how to send an event. - This is especially useful if you are writing a `Command` that needs to send an `Event`. - `Events` are a first-class construct in bevy, even though they are just `Resources` under the hood. Their methods should be discoverable. ## Solution - Provide a simple helpers to send events through `Res<Events<T>>`. --- ## Changelog > `send_event`, `send_default_event`, and `send_event_batch` methods added to `World`.

…5383) after bevyengine#5355, three methods were added on world: * `send_event` * `send_event_batch` * `send_default_event` rename `send_default_event` to `send_event_default` for better discoverability

# Objective - With access to `World`, it's not obvious how to send an event. - This is especially useful if you are writing a `Command` that needs to send an `Event`. - `Events` are a first-class construct in bevy, even though they are just `Resources` under the hood. Their methods should be discoverable. ## Solution - Provide a simple helpers to send events through `Res<Events<T>>`. --- ## Changelog > `send_event`, `send_default_event`, and `send_event_batch` methods added to `World`.

…5383) after bevyengine#5355, three methods were added on world: * `send_event` * `send_event_batch` * `send_default_event` rename `send_default_event` to `send_event_default` for better discoverability

# Objective - With access to `World`, it's not obvious how to send an event. - This is especially useful if you are writing a `Command` that needs to send an `Event`. - `Events` are a first-class construct in bevy, even though they are just `Resources` under the hood. Their methods should be discoverable. ## Solution - Provide a simple helpers to send events through `Res<Events<T>>`. --- ## Changelog > `send_event`, `send_default_event`, and `send_event_batch` methods added to `World`.

…5383) after bevyengine#5355, three methods were added on world: * `send_event` * `send_event_batch` * `send_default_event` rename `send_default_event` to `send_event_default` for better discoverability

# Objective Use the `World::send_event` method added in #5355 to simplify a doc example for `EventWriter`.

add event sending helpers to World

85196b3

aevyrie added A-ECS Entities, components, systems, and events C-Usability A targeted quality-of-life change that makes Bevy easier to use labels Jul 17, 2022

make doc comments concise

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aevyrie changed the title ~~add event sending helpers to World~~ Add helpers to send Events from World Jul 17, 2022

aevyrie marked this pull request as ready for review July 17, 2022 16:14

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aevyrie and others added 2 commits July 17, 2022 11:25

Update crates/bevy_ecs/src/world/mod.rs

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Co-authored-by: Federico Rinaldi <[email protected]>

Update crates/bevy_ecs/src/world/mod.rs

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Co-authored-by: Federico Rinaldi <[email protected]>

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Improve error message and deduplicate

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aevyrie force-pushed the world-event-helpers branch from 2a57b6a to e4b489c Compare July 17, 2022 19:16

aevyrie added the S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it label Jul 17, 2022

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Nilirad removed the S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it label Jul 18, 2022

aevyrie and others added 3 commits July 18, 2022 12:12

Update crates/bevy_ecs/src/world/mod.rs

1371e2c

Co-authored-by: Federico Rinaldi <[email protected]>

Update crates/bevy_ecs/src/world/mod.rs

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Co-authored-by: Federico Rinaldi <[email protected]>

add send_batch

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aevyrie added the S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it label Jul 19, 2022

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Rename send_batch to send_event_batch

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bors bot changed the title ~~Add helpers to send Events from World~~ [Merged by Bors] - Add helpers to send Events from World Jul 19, 2022

bors bot closed this Jul 19, 2022

mockersf mentioned this pull request Jul 19, 2022

[Merged by Bors] - rename send_default_event to send_event_default on world #5383

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joseph-gio mentioned this pull request Feb 7, 2023

[Merged by Bors] - Simplify a doc example for EventWriter #7549

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bors bot pushed a commit that referenced this pull request Feb 7, 2023

Simplify a doc example for EventWriter (#7549)

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# Objective Use the `World::send_event` method added in #5355 to simplify a doc example for `EventWriter`.

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[Merged by Bors] - Add helpers to send Events from World #5355

[Merged by Bors] - Add helpers to send Events from World #5355

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aevyrie commented Jul 17, 2022 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Solution

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[Merged by Bors] - Add helpers to send `Events` from `World` #5355

[Merged by Bors] - Add helpers to send `Events` from `World` #5355

aevyrie commented Jul 17, 2022 •

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