implement ISpeed interface

[microlith57]

No description provided.

[swoolcock]

As I mentioned in Discord, I would recommend calling this something like IHasSpeed.

INoun implies that an implementation has a sole purpose (example, IEnumerator, IList). IAdjective implies that the class can perform a certain functionality but it's not its only purpose (example, IDisposable, IEnumerable). IHasNoun implies that the class provides data in addition to anything else it does (IHasXmlNode).

Edit:
Additionally, I would recommend NOT adding it to Holdable, since it's a component with convenience methods and doesn't actually use the property itself.

[balt-dev]

don't forget PlayerSeeker!