FlexBorder

This mod is a reimagining of my old mod (https://modrinth.com/mod/border-like-battle-royale)

## What This Mod Adds

This mod adds a single, powerful command:

``` /flexborder ``` All setup and control is done through its subcommands.

## 🧭 Features

• 📦 Asymmetric rectangular border (any X/Z coordinates)
• 🔄 Smooth animation of shrinking or repositioning
• 🧲 Soft pushing toward the safe zone when slightly outside
• 🕳️ "Rescue" teleportation with dark screen + impulse if far away
• 🩸 Health penalty system that reduces max HP on each death (down to 1 HP), like a (https://modrinth.com/mod/alexs-mediumcore) mod
• 🕒 Configurable development phase (safe exploration period)
• 🏁 Built-in Battle Royale mode: automatic shrinking with pause phases
• 🔃 Fully resyncs on player join or dimension switch
• ✅ Persistent state (saved in world data)
• Translation to hardcore in "battle mode"

## Command Reference

### `/flexborder set `

Set the rectangular border in the given dimension (or current one). Coordinates define the opposite corners.

### `/flexborder get `

Display current border settings.

`/flexborder dev `

Start a development phase for the given number of seconds. During this phase: - Players lose max HP on death (but stay alive) - Border stays still

When time is up, Battle Royale mode starts automatically.

🧪 Example: /flexborder dev 300 10 15 10 50

→ Wait 5 minutes, then start shrinking every 10 blocks, taking 15s per step, with 10s pauses, until the zone is 100×100 (minSize=50).

`/flexborder brstart `

Start shrinking the border in steps: - Shrinks by `shrinkDistance` (on both X and Z) - Takes `shrinkTime` seconds per step - Waits `pauseTime` seconds between steps - Stops when either half-size reaches `minSize`

Example: ``` /flexborder brstart 5 10 10 50 ```

`/flexborder brstop`

Stop any ongoing shrinking animation.

`/flexborder hploss `

Set how much maximum HP is lost per death during development phase. HP never goes below 1 HP and never reduces more than 20 total HP.

Example: ``` /flexborder hploss 2. 0 ```

Each death removes 2. 0 max HP from the player.

`/flexborder hpreset `

Reset max HP penalty. Restores players' original HP cap. Heals players by the lost amount (but not above new max).

If no targets specified, resets for command sender.

Examples: ``` /flexborder hpreset /flexborder hpreset @a ```

## 🔒 Permissions

All `/flexborder` subcommands require level 4 permission (admin by default). Only the command sender sees any messages in chat.

## 📌 Requirements

• 📦 NeoForge 21. 1. 200+
• ⚙️ Must be installed on both client and server (for rendering + logic)
• 🧠 No mixins, cleanly integrated via event hooks
• 💾 Border data saved per-dimension (via world capabilities)
• Completely removes vanilla worldborder, do not use with mods that change worldborder

## 💡 Use Cases

• Hardcore survival servers with soft boundaries
• Battle Royale gamemodes
• PvP arenas with dynamic safe zones
• RPG maps with exploration followed by collapse