ChunkVisualizer

ChunkVisualizer is a lightweight and powerful Minecraft plugin that allows players to visualize chunk boundaries in real-time without using the debug menu (F3 + G).

It is a perfect companion for Towny or other land-claim systems, as it allows players to see specific chunk edges clearly without cluttering the screen with a global grid.

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🎥 Demonstration

1. Dynamic Chunk Tracking

The visualization automatically follows the player when crossing chunk borders, ensuring seamless territory control. It works with both highlight modes (corner blocks and walls) and is refreshed after teleports and respawns.

2. Full GUI Customization

Use the /cv settings command to open an intuitive interface that allows you to:

• Toggle visibility with a single click (Shift + Click in Blocks mode).
• Switch highlight mode between corner blocks and chunk walls.
• Adjust height of the boundary blocks relative to your current position.
• Change materials used for the visualization: click any block in your inventory while the menu is open.
• Change outline color of the corner blocks (red, orange, yellow, green, cyan, blue, purple or white).
• Customize walls (requires chunkvisualizer.use.display):
  • pick the wall color,
  • adjust opacity from 5% to 100%,
  • toggle the glow effect.
• Reset the block material to the server default with a right click on the material slot.

All settings are saved per player and restored on the next join.

3. Non-Intrusive "Ghost" Blocks

Built using modern packets and Display Entities, these blocks have no collision. They do not interfere with gameplay: you can mine ores or interact with items directly through the visualization. Everything is client-side and visible only to the player who enabled it.

4. Two Highlight Modes

• Corner blocks: ghost blocks at the four chunk corners with a colored outline. Height, material and outline color are configurable.
• Walls: semi-transparent colored walls along the chunk edges (text_display), with adjustable opacity and an optional glow effect. Requires the chunkvisualizer.use.display permission.

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🛠 Commands & Permissions

Command	Description	Permission
/cv	Main command (help)	—
/cv settings	Open the customization GUI	chunkvisualizer.settings
—	Use the Walls highlight mode in the GUI	chunkvisualizer.use.display
/cv reload	Reload config.yml and messages.yml	chunkvisualizer.admin

Grant chunkvisualizer.settings to your players (e.g. via LuckPerms) so they can open the menu. Without chunkvisualizer.use.display, players are always shown the corner blocks mode.

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🔧 Configuration

Defaults for new players are set in plugins/ChunkVisualizer/config.yml:

Option	Description
default-enabled	Visualization on/off on first join
default-mode	BLOCKS or WALLS
default-height	Height of the corner blocks relative to the player
default-material	Material of the corner blocks (any valid Bukkit Material)
default-block-glow-color	Outline color of the corner blocks
default-wall-color	Wall color (RED, ORANGE, YELLOW, GREEN, CYAN, BLUE, PURPLE, WHITE)
default-wall-alpha	Wall opacity in percent (5-100)
default-wall-glow	Wall glow on/off

Changes to these defaults affect only players who join for the first time. Existing players keep their own saved settings.

All texts live in messages.yml. Use /cv reload to apply config and message changes.

Player settings are stored in SQLite (plugins/ChunkVisualizer/data.db) and are tied to the player name.

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📋 Requirements

• Paper 1.21+
• Java 21
• No external dependencies: PacketEvents is bundled inside the jar.

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⚙️ Installation

1. Download the latest .jar file from the Releases page.
2. Place it into your server's plugins folder.
3. Restart the server or load it using a plugin manager.
4. Give your players the chunkvisualizer.settings permission.