i18n

[thombruce]

closes #46, closes #81

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Internal use. Do not delete.

• [ ] Tests passing
• [ ] Coverage sufficient
• [ ] Manual review
• [ ] No A11y regression
• [ ] Translations provided or not needed

[thombruce]

Steps taken:

• I've installed the i18n crate and used it to load en-US translations - this works
• I've added the i18n assets to the assets list in my resources folder - also works, but it's a step in the wrong direction

I don't imagine I am now able to get the assets resource to work with the glob patterns used by bevy_fluent's fallback strategy: https://github.com/kgv/bevy_fluent/blob/main/examples/fallback_chain/main.rs

Maybe if we followed the no_loading_state example from bevy_asset_loader: https://github.com/NiklasEi/bevy_asset_loader/blob/main/bevy_asset_loader/examples/no_loading_state.rs (This loads assets as they're needed in whatever system is requesting them, rather than in a loading state - we can and should combine both approaches).

For now... I'm not sure. We can either revert to the documented bevy_fluent approach or try to implement the above example from bevy_asset_loader as a means to achieving the same result.

[thombruce]

Still need a way to more gracefully load translations eventually - for example, events might randomly occur in the game that feature dialogue and it makes little sense to load all such possible events at once; the translations should be loaded during active play (right now they only load in a LoadTranslations state before the StartMenu).

The above might wait for a future update.

What is needed now:

• [x] All ("most") strings shown in the UI should be added to the i18n system so that alternate translations can be provided
• [x] Perhaps a third demonstration language should be provided (Latin or Cyrillic alphabet - I don't think the current font supports characters outside of that)

[thombruce]

Translations

Done

• Start Menu Press Start
• Start Menu Credits Prompt
• UI "In Space"/"Near" indicator
• UI planet names (separate to above if possible to construct messages)
• "Pause" screen

Todo

• UI speedometer "m/s"

• UI date and time if possible

• UI health "HP" if applicable

• Credits (big maybe right now, but worth a look)

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Not a huge amount, yet, but systems and states will need some reworking both now and in the future to handle changes in how we load translations. For now, I'd just load them all in the GameCreate step before proceeding to the Active game state and that should be fine.

If we do translate the credits... probably add a "LoadingCredits" state to handle the process there.

[thombruce]

No further translations at this time. HP health indicator, datetime, speedometer and credits will all stay as is. We'll review in the future. But as of now, we have a working translations system, and I am able to swap languages by modifying my config file. That's everything we wanted here, so I'm gonna go ahead and merge.