Invalidated Entities

[zicklag]

I just found that invalidating entities is still an issue, but luckily I also discovered the fix we need in the bevy_hierarchy crate. Just posting here for a heads-up in case anybody runs into it:

bevyengine/bevy#6790

For now, in my game I've just patched Bevy with the PR linked in the issue above to fix it.

Originally posted by @zicklag in #29 (comment)

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I'm re-opening this issue because the fix I opened in Bevy wasn't accepted, because it could cause hierarchy inconsistencies. That's a valid point, but we need the behavior I added to make our entity updates work right.

I think what we have to do is we have to make a RollbackMapEntities trait that works essentially similar to the MapEntities trait, but with a slight behavior change, that we can implement for Parent and Children and that users can implement for their own component types that need entity mapping.

[johanhelsing]

I think we added a workaround for this in #74, if I understand this issue correctly. Should we close?

[gschup]

I think yes! We can always reopen if this issue pops up again.