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# Objective Extracts the state mechanisms into a new crate called "bevy_state". This comes with a few goals: - state wasn't really an inherent machinery of the ecs system, and so keeping it within bevy_ecs felt forced - by mixing it in with bevy_ecs, the maintainability of our more robust state system was significantly compromised moving state into a new crate makes it easier to encapsulate as it's own feature, and easier to read and understand since it's no longer a single, massive file. ## Solution move the state-related elements from bevy_ecs to a new crate ## Testing - Did you test these changes? If so, how? all the automated tests migrated and passed, ran the pre-existing examples without changes to validate. --- ## Migration Guide Since bevy_state is now gated behind the `bevy_state` feature, projects that use state but don't use the `default-features` will need to add that feature flag. Since it is no longer part of bevy_ecs, projects that use bevy_ecs directly will need to manually pull in `bevy_state`, trigger the StateTransition schedule, and handle any of the elements that bevy_app currently sets up. --------- Co-authored-by: Kristoffer Søholm <k.soeholm@gmail.com> |
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