This is used to provide a UI hint to guide players towards campaigns
that have been updated to work with the current version of the game.
All the campaigns we currently have were made for an unknown version of
the game, so they're all flagged as incompatible.
The version field is not the DCS Liberation version number because the
campaign format may change multiple times during development. Instead
the version number is a monotonically increasing integer that we
increment whenever a game change requires campaign updates.
Also documented the behavior on the wiki (link in the changelog).
This is currently fully functional for players, but since units can be
bought and sold at any base there's no real reason to use these yet.
Will follow up with making ground units only purchasable at bases with
factories (the UI will still allow the purchase directly at the base,
but it will automatically create the transfer order) so convoys end up
being used, and to make factories a more interesting strategic target.
https://github.com/Khopa/dcs_liberation/issues/824
This adds the models and UIs for creating ground unit transfer orders.
Most of the feature is still missing:
* The AI doesn't do them.
* Transfers can move across the whole map in one turn.
* Transfers between disconnected bases are allowed.
* Transfers are not modeled in the simulation, so they can't be
interdicted.
https://github.com/Khopa/dcs_liberation/issues/824
* A Bluefor EWR 55GS in the campaign miz defines an optional EWR site. There is no distinction between how close or far it is to a base, so it's possible that there will be many EWRs within an airbase.
* A Redfor EWR 1L13 in the campaign miz defines a required EWR site.
It would be a good future idea to limit the amount of EWRs within a certain distance from an airbase. That way there's no chance of 5 EWRs all at the same airbase. Even better if there were something preventing any two EWRs from being right next to each other.
No campaigns take advantage of this yet.
Fixes https://github.com/Khopa/dcs_liberation/issues/524
