This is the official Attorney Online launcher, which can also be customized for custom clients or even any other piece of interesting software.
- Make button to delete installation
- Delete downloaded files after extraction is complete
The game is split into two packages: program and assets. Each package has a
different manifest and thus a different set of versions. This is convenient if
you wish to offer an up-to-date version of your own server assets, but still
wish to allow players to remain up-to-date with the official client.
The manifest is written in JavaScript Object Notation (JSON), which is significantly easier to read and write than YAML (a format you may be familiarized with from tsuserver).
Please refer to spec.ts for a specification, and see the manifests folder
for examples.
A manifest contains a list of versions; the first version on the list is the most recent version.
Each version contains the version name, the name of the previous version, the executable name (if this version contains a full download), and a list of tasks to be performed for a full download and/or an update.
A version may not contain a full download. In this case, the launcher will find
the most recent full download available (by going down prev).
A version may not contain an update. In this case, all players will be required to perform the full download.
A full or update installation operation is simply a list of tasks to be performed. You may delete files or directories before or after performing a download, or even display a message.
Download URLs must be direct links.
Deploying a new client version will require building for the necessary
platforms (winnt_i386, linux_x86_64) and adding version entries to the
respective manifest files. Ensure that the prev entry is set to the previous
version.
Do not distribute base/config.ini or other configuration files in client
downloads, as this will consistently overwrite player-set settings. Instead,
distribute a base/config.sample.ini file, which explains all of the possible
settings and their default values and can be renamed to config.ini by the
player.
You should package your assets with the 7z format using LZMA2 solid compression, which should yield an extremely high compression ratio compared to ZIP.
It is recommended to segment very large downloads into multiple archives. If an error occurs, the updater can detect which archives have already been downloaded, but only if the hash for each archive has been included in the download.
If a mishap (botch) occurs in either an asset or client version, DO NOT ROLL BACK - ROLL FORWARD. Rolling back will cause the launcher to perform a full download for the old version again for everyone. Instead, roll forward by doing the following:
- Create a new version of the same name as the old version.
- Set the new version's update task to revert the damage done by the botched version.
- Set the new version's full download task list to be the same as the old version.
- Set the full and update task list of the botched version to be empty.
Clients that did not update during the botch period will not be asked to update.
Copyright (c) 2018 oldmud0 (github.com/oldmud0)
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.