Block Swap Reforged - 1.21.1 (NeoForge)

Port of Block Swap to Minecraft 1.21.1 for NeoForge 21.1.x.

Features:

• World Generation Swapping**: Replaces specified blocks during chunk generation.
• Live Placement Swapping**: Immediately swaps placed blocks in-world.
• State Property Preservation**: Automatically transfers matching block state properties (axis, facing, half, shape, waterlogged).
• Explicit State Swapping**: Define exact block state mappings in state_swapper.
• Self-Contained JSON5**: Fully backward-compatible with comments and trailing commas in block_swap.json5 without needing third-party library mods.
• Dynamic Config Reload**: Reloads rules per world load; synchronizes from server to client.

Installation:

1. Download the .jar below and drop it into your .minecraft/mods folder (or server mods/ directory).
2. Requires Java 21.