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[Merged by Bors] - Add a change detection bypass and manual control over change ticks #5635
[Merged by Bors] - Add a change detection bypass and manual control over change ticks #5635
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CI failure appears to be due to the |
#5838 added similar functionality to systems themselves. |
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This is a useful feature for rare cases, and the docs correctly warn against potential footguns and suggests better alternatives for common cases.
Since this cannot be worked around in third-party crates I am very much in favor of adding these methods.
Co-authored-by: Jakob Hellermann <jakob.hellermann@protonmail.com>
Removing the controversial label as this flavor of escape hatch was approved in #5838. |
bors r+ |
…5635) # Objective - Our existing change detection API is not flexible enough for advanced users: particularly those attempting to do rollback networking. - This is an important use case, and with adequate warnings we can make mucking about with change ticks scary enough that users generally won't do it. - Fixes #5633. - Closes #2363. ## Changelog - added `ChangeDetection::set_last_changed` to manually mutate the `last_change_ticks` field" - the `ChangeDetection` trait now requires an `Inner` associated type, which contains the value being wrapped. - added `ChangeDetection::bypass_change_detection`, which hands out a raw `&mut Inner` ## Migration Guide Add the `Inner` associated type and new methods to any type that you've implemented `DetectChanges` for.
Pull request successfully merged into main. Build succeeded: |
…evyengine#5635) # Objective - Our existing change detection API is not flexible enough for advanced users: particularly those attempting to do rollback networking. - This is an important use case, and with adequate warnings we can make mucking about with change ticks scary enough that users generally won't do it. - Fixes bevyengine#5633. - Closes bevyengine#2363. ## Changelog - added `ChangeDetection::set_last_changed` to manually mutate the `last_change_ticks` field" - the `ChangeDetection` trait now requires an `Inner` associated type, which contains the value being wrapped. - added `ChangeDetection::bypass_change_detection`, which hands out a raw `&mut Inner` ## Migration Guide Add the `Inner` associated type and new methods to any type that you've implemented `DetectChanges` for.
…evyengine#5635) # Objective - Our existing change detection API is not flexible enough for advanced users: particularly those attempting to do rollback networking. - This is an important use case, and with adequate warnings we can make mucking about with change ticks scary enough that users generally won't do it. - Fixes bevyengine#5633. - Closes bevyengine#2363. ## Changelog - added `ChangeDetection::set_last_changed` to manually mutate the `last_change_ticks` field" - the `ChangeDetection` trait now requires an `Inner` associated type, which contains the value being wrapped. - added `ChangeDetection::bypass_change_detection`, which hands out a raw `&mut Inner` ## Migration Guide Add the `Inner` associated type and new methods to any type that you've implemented `DetectChanges` for.
…evyengine#5635) # Objective - Our existing change detection API is not flexible enough for advanced users: particularly those attempting to do rollback networking. - This is an important use case, and with adequate warnings we can make mucking about with change ticks scary enough that users generally won't do it. - Fixes bevyengine#5633. - Closes bevyengine#2363. ## Changelog - added `ChangeDetection::set_last_changed` to manually mutate the `last_change_ticks` field" - the `ChangeDetection` trait now requires an `Inner` associated type, which contains the value being wrapped. - added `ChangeDetection::bypass_change_detection`, which hands out a raw `&mut Inner` ## Migration Guide Add the `Inner` associated type and new methods to any type that you've implemented `DetectChanges` for.
Objective
Changelog
ChangeDetection::set_last_changed
to manually mutate thelast_change_ticks
field"ChangeDetection
trait now requires anInner
associated type, which contains the value being wrapped.ChangeDetection::bypass_change_detection
, which hands out a raw&mut Inner
Migration Guide
Add the
Inner
associated type and new methods to any type that you've implementedDetectChanges
for.