AutoHost for osu!

A bot for osu! multiplayer to allow automatic beatmap rotation. This software was created to test capabilities of my Bancho client framework project.

When does a game start?

Before starting a game, the bot will wait 3 minutes for everyone to get ready. If everyone is ready before the time runs out - the game will start instantly. If about 70% people are ready when the timer runs out - the game will be force-started.

Interaction

To use the bot you can type !command into the chat. Some commands only work in the multiplayer chat, some only in private chat. There are only two permission levels at the moment: user (default) and an operator. Operator is an administrative role and therefore it can use some more commands.

Commands

Command	Description
!add [link to beatmap]	Adds a beatmap to a queue of maps to play. The beatmaps must match a criteria decribed below.
!voteskip	Vote to skip a map. Over 50% of users have to vote to skip the current song.
!skip	An operator command. Instantly skips a map.
!wait	An operator command. Resets the waiting timer (default: 3 minutes).
!isop	Only works in private chat. Tells you whether or not you are an operator.
!help	Only works in private chat. Links you to this page.

Adding beatmaps

When you're adding a beatmap, the link should look something like this: https://osu.ppy.sh/b/665240 of just osu.ppy.sh/b/665240. Notice the /b/ - it denotes that this link point to a specific difficulty in a beatmap set. If the link has /s/ - it points to a beatmap set and therefore is too ambigious and invalid. If you want to get the valid link, on the beatmap set page, click on one of the difficulty tabs.

Beatmap queue

To setup a beatmap queue, you will need to create beatmaps folder next to the executable file. This folder should contain various .osu files of beatmaps to play.

Beatmap criteria

This is the current criteria for using the !add command. This will be configurable later, but for now it's hardcoded to:

• The map must be for osu! standard gamemode.
• The map's star difficulty must be between 4.8 and 6 stars.
• The map must be either ranked, qualified or pending.
• The map can not be longer that 6 minutes.
• The map can not be a repeat of the last 30 songs.

Compiling

First of all, you will need some dependencies. Most of the dependency management is done with Maven. There are two libraries that you will need to reference manually:

• Bancho API - the commons API used for packet parsing.
• Bancho Client - the framework for Bancho client.

Running

First of all compile or download the executable file from releases page. Then to run the bot, you will first need to make a configuration file settings.conf like this:

account {
  username = "username"
  password = "password"
  osu-api-key = "apikey" # obtained here https://osu.ppy.sh/p/api
}

general {
  operators = [ # user IDs of trusted users
    2982427
    3872846
  ]
}

room {
  name = "AutoHost testing"
  password = null  
  slots = 16
}

Before running the bot, don't forget to setup a beatmaps folder. Your file structure should be something like this:

/autohost
|--/beatmaps
|  |--beatmap1.osu
|  |--beatmap2.osu
|  |--etc...
|--settings.conf
|--autohost.jar

Then to actually run the bot the bot use the file as an argument:

java -jar autohost.jar settings.conf