Support for Custom Command Queues? ( I have an Implementation ) about iyes_loopless HOT 4 CLOSED

Oh super interesting; so then we can have different flavors of commands and flush them separately?

IMO this is probably best tackled with a PR to Bevy itself; I think that this should be able to be assessed and implemented independently of the rest of the stageless work.

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Oh super interesting; so then we can have different flavors of commands and flush them separately?

Yep! I think with an unsafe implementation of SystemParam we can even get ergonomics matching Bevy's built-in Commands struct so that you don't have to do let commands = my_commands.commands(). I've got to try that out.

IMO this is probably best tackled with a PR to Bevy itself; I think that this should be able to be assessed and implemented independently of the rest of the stageless work.

Makes sense. I'll close this then and move to Bevy.

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While writing an example for how to use this I found that apparently Bevy already flushes the command queues in between stages, by default, unless you explicitly add a stage that doesn't flush the buffers, so this isn't actually necessary, I don't think.

Since we aren't allowed to insert the exclusive system that flushes the commands anywhere except in it's own stage or at the beginning or end of an existing stage, it doesn't hold any advantage over just letting Bevy do it's default command flushing between stages.

I thought Bevy only flushed the commands at the end of the frame, so I was solving for a non issue. :)

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@alice-i-cecile pinging you because you helped start the stageless RFC and might have thoughts on this implementation.

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