SMP Position Saver

A Bukkit plugin for Minecraft 1.21.8 that saves and restores player positions in SMP worlds.

Features

• Auto save: Saves player position when they leave an SMP world
• Auto restore: Restores the last saved position when a player enters an SMP world
• Flexible configuration: Configurable list of worlds treated as SMP
• Multi-world support: Handles multiple SMP worlds at once
• YAML storage: Positions stored in positions.yml

Installation

1. Compile the plugin with Maven:

mvn clean package

2. Copy the generated JAR from target/ to your server's plugins/ folder.

3. Restart the server or reload the plugins.

Configuration

The config.yml file will be generated automatically in the plugin folder:

# SMP worlds configuration
smp-worlds:
  - "world"
  - "world_nether"
  - "world_the_end"
  - "survival"
  - "survival_nether"
  - "survival_the_end"

# Customizable messages
messages:
  position-saved: "§aYour position has been saved in {world}!"
  position-restored: "§aYou have been teleported to your last position in {world}!"
  no-position-saved: "§cNo saved position for this world."
  config-reloaded: "§aConfiguration reloaded successfully!"

# Options
options:
  save-on-quit: true
  restore-on-join: true
  clear-on-death: true
  debug: false
  # Datapack functions executed when entering/exiting an SMP world
  entry-function: "datapack:functions/enter_smp"
  exit-function: "datapack:functions/exit_smp"

SMP worlds configuration

Add or remove worlds in the smp-worlds section to define which worlds belong to the SMP group.

• Names may be exact or use the wildcard *. For instance world_* will match world_1, world_nether, etc.

Options

• save-on-quit: Save the position when the player leaves the server
• restore-on-join: Restore the position when the player joins the server
• clear-on-death: Remove saved coordinates when a player dies in an SMP world
• debug: Enable debug logging

How it works

When a player enters an SMP world:

1. The plugin checks if a position was saved for that player in this world
2. If so, the player is teleported to their last saved position
3. Otherwise a message informs them that no position is available

When a player leaves an SMP world:

1. The plugin automatically saves the player's current position
2. Coordinates (x, y, z), orientation (yaw, pitch) and world are recorded
3. A message confirms the save

Data storage

Positions are saved in plugins/SMPPositionSaver/positions.yml with this structure:

players:
  <player-uuid>:
   <world-name>:
    x: 123.45
    y: 64.0
    z: -456.78
    yaw: 90.0
    pitch: 0.0

Permissions

• smppositionsaver.use: Allows use of the position saving system (default: true)

Commands

• /smp: Teleports the player to the SMP coordinates defined in the configuration.
• /smp reload: Reloads the configuration file; requires permission smp.reload (op by default).

This command isn't required for normal operation but can be useful after editing config.yml without restarting the server.

Compatibility

• Minecraft: 1.21.8
• API: Spigot/Paper 1.21+
• Java: 21+

Development

The plugin is structured with the following components:

• SMPPositionSaver: Main plugin class
• ConfigManager: Configuration manager
• PositionManager: Player position manager
• PlayerWorldChangeListener: Listener for world change events
• PlayerPosition: Model representing a saved position

Support

For any questions or issues, please check the server logs or enable debug mode in the configuration.