50 lines
1.8 KiB
Markdown
50 lines
1.8 KiB
Markdown
## Chelsea's MC Worldgen
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Chelsea's take on Minecraft terrain lives here: a fast C port of my original Python generator with multithreaded chunk workers, Simplex noise, and just enough chaos to keep it interesting. Consider it about **3/4 vibecoded**—the math is solid, but a quarter of the surface area is vibes, instinct, and late-night tuning.
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### What it does
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- Generates chunk data compatible with vanilla region (`.mca`) files or raw binary dumps.
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- Keeps the original Python ordering for noise, terrain, ores, and tree placement so worlds feel familiar.
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- Splits work efficiently across threads so you can saturate multi-core machines or scatter jobs in a cluster.
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### Build it
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```sh
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make
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```
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This drops the `worldgen` binary into `bin/`.
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### Run it
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```sh
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./bin/worldgen --radius 2 --threads 8 --out output
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```
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Key flags:
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- `--radius R` with optional `--center-x`/`--center-z` for quick square patches.
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- `--min-x`, `--max-x`, `--min-z`, `--max-z` for explicit rectangles (great for splitting work across machines).
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- `--threads N` to match your CPU.
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- `--seed S`, `--sea-level L`, and `--format mca|bin` for the usual customization knobs.
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`mca` (default) writes region files you can copy directly into a world directory under `region/`. `bin` preserves the older chunk-dump pipeline for custom tooling.
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### Output anatomy
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Each chunk blob contains:
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1. `int32 chunk_x`, `int32 chunk_z`
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2. `uint16 heightmap[16][16]`
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3. `uint16 blocks[256][16][16]`
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Chunks are independent, so spray out ranges across machines and merge by simply putting the files in the same output directory.
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### State of the vibes
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- Noise scaffolding is done.
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- Decoration passes (ores, trees) mirror the Python original.
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- Region writer is battle-tested, but I still keep eyes on biome edges.
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- Feature ideas welcome—PRs, issues, or just DM me about the remaining 1/4 vibe debt.
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