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112 lines
6.2 KiB
Markdown
112 lines
6.2 KiB
Markdown
title: Evennia 2.0.0 released today
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copyrights: Image by Luc Viatour / [https://lucnix.be/](https://lucnix.be), released under Creative Commons.
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---
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<br>
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As part of our new use of [semantic versioning](https://semver.org/), Evennia
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2.0.0 was released today. Evennia is a Python `MU*` creation framework and
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server. As the change of the major version indicates, this is a backwards
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incompatible change ... well, _maybe_. It depends on your use-case. Read on.
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In this post I'll go over some of the new things since the release of Evennia
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1.0 some six months ago.
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## New version of the ExtendedRoom
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The main thing that _may_ be backwards income is the `ExtendedRoom` contrib.
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This contrib extends the standard room with the ability to look at 'details' and
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to have descriptions that change by season and by time-of-day in the game. I
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originally wrote the `ExtendedRoom` contrib more than a decade ago and it was
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in dire need to be recactored and cleaned up to use the modern tools available
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in Evennia. Not to mention make use of my additional years of experience since
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first creating it.
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Here are the [new features](https://github.com/evennia/evennia/discussions/3200):
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- All rooms can now have any number of "room states", like "burning", "flooded",
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"dark", "crowded" or what have you. The `season` and `time_of_day` are now just
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treated as any other room-states except that they auto-change with in-game time.
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- Rooms can have any number of swappable room-descriptions, just by adding an
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Attribute `desc_<roomstate>` to the room. This will be used when a given
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room-state is set on the room. If no room state matches, the traditional
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`desc` Attribute is used.
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- In the old contrib, you could add special tags, like `<morning>...</morning>`
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in your descriptions and have those parts of the texts only appear when it's
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morning in-game. This still works, but only ever supported time-of-day states.
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The new way is to make use Evennia's FuncParser to embed functions in the text
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directly. The `ExtendedRoom` understands the new `state` inline function. This
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can be used with _any_ room state (including seasons and time-of-day). For
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example: `$state(morning, The morning sun is shining in.)` or
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`$state(burning, This place is on fire!)`.
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- The room still supports `details` - the ability to look at things in the room
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without needing to create a new database object first. This hasn't changed.
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- The `ExtendedRoom` now also has simple support for echoing random messages now
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and then to the room.
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Overall, the code was completely re-written and cleaned up, making use of the
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latest Evennia tooling. It also has much better unit-test coverage. All the unit
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tests of the old implementation passes for the new one, but the changes are
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so big that it's nevertheless possible people making heavy use of
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this contrib may see side effects from upgrading.
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Now, a contrib is not part of the core, so it (potentially) being
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backwards-incompatible should normally not warrant a major version bump. But I
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feel the `ExtendedRoom` contrib is used by so many in the Evennia community that
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it's prudent to up the major version to let people know that they should
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keep an eye out when upgrading.
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## More on the Beginner Tutorial
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Most of my time has been spent continuing to work on the new [Beginner Tutorial](https://www.evennia.com/docs/latest/Howtos/Beginner-Tutorial/Beginner-Tutorial-Overview.html). Notably on [part three](https://www.evennia.com/docs/latest/Howtos/Beginner-Tutorial/Part3/Beginner-Tutorial-Part3-Overview.html), where
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we are making a whole little Evennia MUD game from scratch. While still not
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done, I have now added detailed lessons on
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- Creating RPG dice rollers and rule systems (in our example we are using the
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_Knave_ TTRPG ruleset).
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- Organizing Player Character data, and character generation.
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- In-game objects and items.
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- Handling equipment and weapons.
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- In-game rooms.
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- Non-player characters.
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- Two types of Combat systems (Twitch-based and Turn based).
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TODOs are Monster/NPC AI, Dynamical generation of rooms, Questin, Shops and some
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more bits and bobs. And of course a separate session on building the game world
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and tying all these systems together into a little example game.
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## A truckload of new features!
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As usual, the Evennia community ame through with a bunch of new useful stuff since
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the release of Evennia 1.0.
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- `Containers` - A new contrib with a typeclass and commands to make and manage
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all sorts of containers, from chests to crates and jars, along with commands
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to put things in them and take things out of them. A great place to start
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tweaking for your own game implementation (InspectorCaracal).
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- The ANSI color fallbacks (for use when your client does not support XTerm256)
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were improved to make more sense (InspectorCaracal).
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- New `logger.delete_log` method for deleting log files from inside the server (aMiss-aWry).
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- For those intending to override the `SessionHandler`, it was cleaned up and
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refactored to make it less prone to cause circular import issues (Volund).
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- New `create_channel(attr=...)` keyword, for setting channel Attributes
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directly on creation, especially from channels defined in `settings.DEFAULT_CHANNELS` (me)
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- Attributes will now properly save Python `deques` with `maxlen=...` set (me).
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- [`TagCategoryProperty`](https://www.evennia.com/docs/latest/Components/Tags.html#tagcategoryproperty) - A new way to define tags with a particular category on a class at creation-time, without having to do so in the `at_object_creation` method (me).
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- A lot of bug fixes; [see the CHANGELOG](https://www.evennia.com/docs/latest/Coding/Changelog.html) for all the details!
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## Continuing
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Over summer, my development usually slows down a bit, but I plan to keep pushing
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on getting that Beginner tutorial done. We are also seeing more people joing
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the [evennia discord](https://discord.gg/AJJpcRUhtF), which means more eyes on
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the code and more bugs and edge cases being detected (and ironed out). So a lot
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of maintenance work to be done in the short term.
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In the longer term, there are a lot of exciting plans for Evennia in the pipe,
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but we'll get there when we get there. :)
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Have a nice summer!
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