BoundaryBox
A lightweight region protection mod for Forge 1.20.1
BoundaryBox allows server administrators and builders to define protected regions in their world, preventing players from breaking or placing blocks within designated areas.
Designed with adventure map creation in mind, it also works with structure block generation
Feedback and suggestions are greatly appreciated! I am always improving and adding features.
Features:
Boundary Box Tool
- Select two points to define a protected region instantly
Boundary Marker Tool; Specific for Structure Blocks
- When placing structure blocks, be sure to have them inside the bounds to auto-register protection on world generation using the marker command, as the tool is for already-generated worlds
Named Regions
- Organise and manage multiple regions with custom names
Potion Effects 
- Apply persistent effects to players while inside specific regions
Fire and Explosion Protection
- Within the bounds, fire won't spread, and all blicks are immune to explosions
Fluid Protection
- Block lava and water placement within protected areas
Breakable Whitelist
- Configure specific blocks that players can still interact with
Creative Override
- All protections are skipped for creative mode players
Full Persistence
- Regions and their settings survive server restarts
Admin Commands
- * Use
/boundarybox commands for region management
Config Driven
- Customise breakable blocks and fire protection via the config file
Commands:
/boundarybox list
- Lists all active regions in the current dimension with their coordinates and size
**/boundarybox remove <name>**
- Removes a named region from the current dimension
**/boundarybox removeall**
- Removes all regions in the current dimension
/boundarybox rename <oldname> <newname>
- Renames an existing region
/boundarybox name <regionname>
- Sets the name for the next region created with the tool
**/boundarybox marker <name> <width> <height> <depth>**
- Configures a Region Marker block being looked at, defining its region name and dimensions (these three parameters are the x y z levels of blocks, e.g., 2x3x2)
**/boundarybox effect <regionname> <effect> <amplifier>**
- Adds a potion effect to a region, applied to all players inside. Amplifier starts at 0 for level 1 and is removed 2 to 3 seconds upon leaving
**/boundarybox removeeffect <regionname> <effect>**
- Removes a potion effect from a region
Tool Controls:
- Left click block — Set Point A
- Right-click block — Set Point B, creates a region if both points are set
- Left click air/shift left click ground — Clear current selection
- Shift + right click — Remove the most recently created region
Perfect for:
- Adventure map creators and mod pack makers
- Server administrators protecting spawn areas or points of interest
- Modpack developers building structured gameplay experiences
Feedback and suggestions are greatly appreciated! I am always improving and adding features.
