Use player.dat

[Iaiao]

player.dat

Status

• [x] Ready
• [ ] Development
• [ ] Hold

Description

This PR makes player's data (inventory, abilities, position, gamemode, previous gamemode, health) persistent by saving it to player.dat files, adds player abilities and previous gamemode component (used in F3+F4 gamemode switcher), methods client.send_abilities, client.set_hotbar_slot, world.load_player_data and world.save_player_data. This also adds derive_more dependency to derive Deref and DerefMut on single-field components.

Related issues

Checklist

• [x] Ran cargo fmt, cargo clippy --all-targets, cargo build --release and cargo test and fixed any generated errors!
• [ ] Removed unnecessary commented out code
• [ ] Used specific traces (if you trace actions please specify the cause i.e. the player)

Note: if you locally don't get any errors, but GitHub Actions fails (especially at clippy) you might want to check your rust toolchain version. You can then feel free to fix these warnings/errors in your PR.

[Iaiao]

Looks okay, not sure why PreviousGamemode is it own type but I assume there's a reason

Because it's a component, the client uses it in F3+F4 gamemode switcher. It also allows -1 value, which means there's no previous gamemode

[Defman]

This does not seem to compile on the CI.

[Tracreed]

This does not seem to compile on the CI.

Seems to be the problem of the superflat file adding together str. Some get it and some don't. It hasn't changed so it shouldn't fail.

[Defman]

Is it ready to be merged?

[Iaiao]

Yes, it's ready