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# Objective After merging retained rendering world #15320, we now have a good way of creating a link between worlds (*HIYAA intensifies*). This means that `get_or_spawn` is no longer necessary for that function. Entity should be opaque as the warning above `get_or_spawn` says. This is also part of #15459. I'm deprecating `get_or_spawn_batch` in a different PR in order to keep the PR small in size. ## Solution Deprecate `get_or_spawn` and replace it with `get_entity` in most contexts. If it's possible to query `&RenderEntity`, then the entity is synced and `render_entity.id()` is initialized in the render world. ## Migration Guide If you are given an `Entity` and you want to do something with it, use `Commands.entity(...)` or `World.entity(...)`. If instead you want to spawn something use `Commands.spawn(...)` or `World.spawn(...)`. If you are not sure if an entity exists, you can always use `get_entity` and match on the `Option<...>` that is returned. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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