Cushion of Backup - Rollback Cushion

Optimizes the player handling logic during server rollbacks/restarts to provide players with a seamless and smooth gaming experience.

Foreword

Note: This plugin does not provide a new method for rollbacks. It is an improvement plugin for the rollback experience, built upon the existing rollback method that requires a server restart.

In multiplayer servers, rollbacks/restarts are inevitable. However, every rollback requires a server restart, forcing players to disconnect and return to the server list. Not only is the experience abruptly interrupted, but players also have to manually reconnect repeatedly, without knowing how long they must wait to rejoin...

The author wanted to change this commonly poor experience. Therefore, some improvements were attempted. We hope this plugin can bring an enhanced rollback experience to you or the server you are on.

How It Optimizes

Demo Video: Perhaps the Best Rollback Experience in Survival Technical Servers

Under Velocity, when the survival server (main server) restarts, players will be transferred to the lobby server (can be any sub-server; 'lobby' is just a name, without special meaning; functionally, it serves as a temporary transfer server for players).

When the survival server successfully rolls back and is preparing to start, as well as after it starts successfully, prompt messages will be sent to the lobby server. Subsequently, players will automatically be returned to the survival server. This achieves a seamless and smooth gaming experience for players during the survival server's restart.

Installation

Prerequisites

• Requires a configured Velocity proxy, and the Velocircon plugin must be installed to enable and configure RCON control.

• Both the survival server and the lobby server are sub-servers of Velocity, and the lobby server must have RCON control enabled and configured.

• In the Velocity configuration file's try block, the survival server and lobby server need to be added.

Note

This plugin needs to be installed on the survival server (main server).

Configuration File

The plugin will automatically generate the configuration file config/cushion_of_backup.json upon first load.

{
    "velocity_host": "127.0.0.1",
    "velocity_port": 25581,
    "velocity_passwd": "password123",
    "lobby_host": "127.0.0.1",
    "lobby_port": 25576,
    "lobby_passwd": "password123",
    "lobby_server": "lobby",
    "survival_server": "survival",
    "survival_server_start": "The survival server is starting up...",
    "survival_server_startup": "Startup complete! Returning players to the survival server...",
    "survival_server_failure": "The survival server crashed! Please report to an administrator. The survival server will continue attempting to start."
}

Configuration Item Descriptions

Configuration Item	Type	Default Value	Description
velocity_host	string	127.0.0.1	Velocity server address
velocity_port	int	25575	Velocity RCON port
velocity_passwd	string	password	Velocity RCON password
lobby_host	string	127.0.0.1	Lobby server address
lobby_port	int	25575	Lobby server RCON port
lobby_passwd	string	password	Lobby server RCON password
lobby_server	string	lobby	Lobby server name in Velocity
survival_server	string	survival	Survival server name in Velocity
survival_server_start	string	The survival server is starting up...	Message sent to the lobby server when the survival server begins starting
survival_server_startup	string	Startup complete! Returning players to the survival server...	Message sent to the lobby server when the survival server finishes starting
survival_server_failure	string	The survival server crashed! Please report to an administrator. The survival server will continue attempting to start.	Message sent to the lobby server when the survival server crashes

Other

This is the initial plugin development, and there may be unfamiliarities or imperfections. If you encounter bugs or have other suggestions while using it, welcome to submit an Issue at the plugin's source repository on GitHub.