Chunk Replacer

Chunk Replacer makes every newly generated chunk consist of a single, randomly chosen block.

• Mod id: chunkreplacer; applies on both client and server (logic runs server-side during chunk generation).
• On each new chunk creation, the mod picks a deterministic block for that chunk using the world seed and chunk position, then fills the entire chunk volume with that block.
• Candidate blocks come from all registered blocks except air-like blocks and those requiring block entities, keeping generation simple and crash-free.
• Existing chunks stay untouched; only freshly generated chunks are overwritten, which means terrain, caves, and structures in new chunks are fully replaced.

Notes and limitations:

• Expect extreme terrain changes—chunks can become solid lava, obsidian, etc.—and structure/feature generation is overridden.
• Filling whole chunks can be computationally heavy when many chunks generate at once; pregen in small batches if running on limited hardware.