EternalScript: A Kotlin Scripting Plugin for Minecraft Paper Servers

EternalScript allows you to dynamically load and manage code at runtime on your Minecraft Paper server without requiring restarts. It supports diverse customization features like script lifecycle management, event handling, and custom commands.

Commands

Here are the available commands for EternalScript:

/es compile: Compiles and loads all scripts within the configured script folder.
/es clear: Unloads all currently loaded scripts.
/es config: Reloads the plugin configuration.
/es call [script] [function]: Calls a function within a specified script.
/es load [script]: Loads a specific script file (e.g., /es load "/hello.kt").
/es unload [script]: Unloads a specific script file (e.g., /es unload "/hello.kt").
/es list: Lists all currently loaded scripts.

Script Lifecycle

Control how your scripts behave, including performing initial setup when loaded and cleaning up resources when unloaded.

enable {
    // This code runs when the script is loaded/enabled.
    Bukkit.broadcastMessage("Eternal Script: Script loaded!")
}

disable {
    // This code runs when the script is unloaded/disabled.
    Bukkit.broadcastMessage("Eternal Script: Script unloaded!")
}

Event Handling

Easily register and handle events directly within your scripts to add custom logic.

import org.bukkit.Bukkit
import org.bukkit.event.player.PlayerJoinEvent
import org.bukkit.event.player.PlayerQuitEvent

event<PlayerJoinEvent> { event ->
    Bukkit.broadcastMessage("${event.player.name} joined the server!")
}

event<PlayerQuitEvent> { event ->
    Bukkit.broadcastMessage("${event.player.name} left the server.")
}

Custom Commands

Define and register your own in-game commands directly from your scripts.

import org.bukkit.Bukkit

command("test-command") {
    // Players need this permission to execute the command.
    permission = "eternals.command.test"
    executor = { sender, label, args ->
        // This code runs when the command is executed.
        Bukkit.broadcastMessage("Command executed by: ${sender.name}")
    }
}

Script Inclusion/Exclusion Rules

Control which scripts the plugin processes.

*.kt | *.kts: Includes all Kotlin files (.kt) and Kotlin script files (.kts).
-*/ *.kt | -*.kt: Ignores specific folders or files (e.g., excludes scripts in subfolders or specific files).
!*/* .kt | !*.kt: Loads specific folders or files synchronously (e.g., processes them before other scripts at server startup).

Installation

It's quick and easy to get EternalScript up and running on your server:

Download the latest version of EternalScript from Modrinth.
Upload the downloaded file to your Minecraft server's plugins folder.
Start or restart your server to load EternalScript.

Getting Started

Experience the power of EternalScript by writing and running your first Kotlin script:

After installation, a plugins/EternalScript/scripts/ folder will be created.
Write your Kotlin script file with a .kt extension inside this scripts folder.
From the server console, you can use the /es load "/[script].kt" command to load a specific script, or /es compile to load all scripts within the folder.

Simple "Hello World" Example

Create a hello.kt file in the plugins/EternalScript/scripts/ folder and enter the following content:

// plugins/EternalScript/scripts/hello.kt

enable {
    Bukkit.broadcastMessage("Hello, world!")
}

Then, execute /es load "/hello.kt" from the server console, and you'll see the message appear in the game chat.

EternalScript

📖About EternalScript