Hot-reloading for Rust Operators

[haixuanTao]

After talking with @alice-i-cecile at GOSIM, we discussed about hot-reloading in Rust and current POC for Bevy Engine. Hot-reloading makes game development a lot faster for the Bevy Engine. So, we can extrapolate their work to make robot dev faster 😄 And, it seems that there is some hot-reloading POC in Rust that are pretty cool, that we could fiddle around in the future if community wants it.

Implementation possibility:

• based on hot-lib-reloading Check the blog post https://robert.kra.hn/posts/hot-reloading-rust/#how-to-use-it-with-bevy
• based on Rune Scripting Language to make code hot-reloadable for game development.
• based on libloading only Check the repo: https://github.com/lee-orr/dexterous_developer

Previous bottleneck

This by-pass the need to have to do Shared-Lib based hot-reloading that was discussed as difficult in #239 (review) .
Obviously, this can come with other limitation

Demos:

https://twitter.com/MalekiRe/status/1710483721168761317
https://rune-rs.github.io/play/?c=Zm4gZmliKG4pIHsKICAgIGlmIG4gPD0gMSB7CiAgICAgICAgbgogICAgfSBlbHNlIHsKICAgICAgICBmaWIobiAtIDEpICsgZmliKG4gLSAyKQogICAgfQp9CgpwdWIgZm4gbWFpbigpIHsKICAgIGZpYigxNSkKfQo%3D

Prioritization

I open this discussion to open the discussion (and so I don't forget) but this feature might not be prioritize just yet, except if there is community need.

Special thanks

• @alice-i-cecile
• Bevy Team for the awesome work <3

Related Discussion

• https://discord.com/channels/691052431525675048/1160043888497664000
• Hot reloading of Rust functions for mods and faster development bevyengine/bevy#1095