Campaign implementation for Single Player.
Provides a basic architecture for creating campaigns, loading them, and running them via scenarios that get enabled "façon Age of Empires 1".
Campaign-specific GUI files reside in /gui/campaigns
Campaign templates in /campaigns
Some common files have been put in /gui/common/campaigns, to avoid /common becoming too large. These are included in the main menu and in session.
There is a custom session file in /gui/session/campaigns for convenience.
These campaign scripts should be somewhat SP/MP agnostic, though they're using the SP gamesetup for now.
----
Further work on the gamesetup is probably required. I would like campaigns to have their own subfolder in "maps", ideally, or perhaps in "campaigns/[yourcampaignname]"
----
Possibly for a V2 implementation:
- Letting campaigns also hook in the "loading" screen, to show videos or whatever.
- Letting campaigns freeze gamesetup settings and not others/implement a custom simplified gamesetting for campaign (difficulties...)
Many other things I'm probably forgetting now.