Rectangle Border

Features

• Independent width (X) and height (Z)
• Configurable center coordinates
• Works in all dimensions (Overworld, Nether, End, and modded dimensions)
• Uses the real vanilla world border (visual wall, damage, knockback, chunk limits, etc.)
• Simple config file

Config (config/rectworldborder.cfg)

sizeX=100.0
sizeZ=200.0
centerX=0.0
centerZ=0.0
forceCenter=true

• sizeX / sizeZ — full diameters in blocks
• centerX / centerZ — center of the rectangle
• forceCenter — always use the config center (recommended)

Requirements

• Minecraft 1.12.2
• Forge
• MixinBooter (required)

Installation

1. Install MixinBooter
2. Drop this mod into your mods folder
3. Put the mod on both client and server
4. Start the game once to generate the config, then edit the sizes/center as needed

Notes

• The visual border, damage, and all vanilla border behaviour become rectangular.
• Changes apply to every dimension automatically.
• Restart the world/server after changing the config.