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Change detection common conditions #7670

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LiamGallagher737
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Objective

Add some new run condition generators to the common_conditions module for checking the change detection of a certain resource or state.


Changelog

Added

  • resource_added<T: Resource>
  • resource_changed<T: Resource>
  • resource_exsits_and_changed<T: Resource>
  • resource_added<T: Resource>
  • state_changed<T: States>

I have not added the rest of the methods for states because as far as I can tell you can't add them at run time, please let me know if I am wrong and I will add them too.

Another note, the fact that state_change will trigger even when the state was set to the same variant it already had makes me hesitant on whether to keep it as it could be a bit misleading, some opinions on this would be great.

@alice-i-cecile
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Some of these are being added in #7579; we should be careful to avoid duplication.

@alice-i-cecile alice-i-cecile added A-ECS Entities, components, systems, and events C-Usability A targeted quality-of-life change that makes Bevy easier to use labels Feb 14, 2023
@LiamGallagher737
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🤦‍♂️ should have looked before I started, that PR has all of them, I shall now close this.

@LiamGallagher737 LiamGallagher737 deleted the Change-Detection-Common-Conditions branch February 15, 2023 04:06
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2 participants