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Parley Hatch df02911a1b feat(world): procedural overworld generator — continents, climate, rivers 
A new `world` generation domain in reikhelm-core, sibling to the dungeon
passes. Builds continuous fields (elevation, temperature, moisture, flow)
and classifies them into biomes — a general-purpose world generator any
game can consume, the foundation for the "generate a world for any game"
app idea.

Stages (each forks its own RNG sub-stream, like the dungeon pipeline):
- noise:     own Perlin + fBm + domain warp (no `noise` crate, same reason
             we own range/shuffle — version drift would change every seed)
- elevation: domain-warped fBm shaped by edge falloff + redistribution
- hydrology: ocean/lake flood, priority-flood depression fill, D8 flow
             accumulation → dendritic rivers that always reach the sea
- climate:   latitude temperature w/ altitude lapse; prevailing-wind
             moisture sweep with orographic rain + emergent rain shadows
- biome:     Whittaker classifier over temperature × moisture

Determinism: same (config, seed) → byte-identical World on every machine.
The whole generator is transcendental-free (only + - * / and comparisons),
so even the f32 fields reproduce exactly cross-platform (spec §7 ethos).

Plus `examples/world_png.rs`: a zero-dependency PNG exporter (hand-rolled
stored-DEFLATE zlib) with biome palette, ocean-depth shading, and hillshade
— a viewer for eyeballing output, kept out of the pure core.

24 new tests (determinism, rain-shadow, depression-filling, river density,
Whittaker corners); full suite 169 passing, clippy clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-15 19:11:04 -06:00
.dev docs(combat): harden spec after two critic passes 2026-06-02 23:51:12 -06:00
combat feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
game-wasm feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
game-web feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
reikhelm-core feat(world): procedural overworld generator — continents, climate, rivers 2026-06-15 19:11:04 -06:00
reikhelm-viz feat(core): water & lava pools (PoolDecorator) + lava lighting 2026-05-31 00:41:48 -06:00
reikhelm-wasm feat(core): room theming — RoomThemer classifier + themed renderer (10th pass) 2026-05-31 17:03:53 -06:00
reikhelm-web fix(pipeline): kill dither speckle + atlas geometry lies (post-playtest) 2026-06-12 00:06:46 -06:00
tools feat(art): re-bake the DESCENT campaign through the rev-2 pipeline 2026-06-12 00:37:03 -06:00
.gitignore feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
Cargo.lock feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
Cargo.toml feat(game): REIKHELM: DESCENT — playable first-person roguelike 2026-06-11 23:30:50 -06:00
README.md feat(combat): deterministic combined-pool combat engine + sim + analysis 2026-06-03 12:13:04 -06:00

README.md

reikhelm

A sandbox for game-system experiments. No single end goal — each idea is its own self-contained system, built to learn and to see something cool run. The best ones might get blended into an actual game someday; until then it's just shipping for fun.

How this repo works

  • One experiment per top-level folder. Each is meant to stand on its own.
  • Mix and match freely. When two systems are worth mashing up, write glue code between them. It doesn't have to be pretty.
  • Rust or Python, whatever fits the idea. Rust experiments can be standalone Cargo projects or join the workspace below for easy path-dependency glue.

What's here so far

Procedural dungeon generator (Rust)

A deterministic 2D map generator built from small composable passes over a shared context (BSP → rooms → caves → connect → corridors → doors → pools → pillars → entities). Towns/dungeons are different recipes drawn from one primitive vocabulary (Partitioner / Shaper / Connector / Placer / Decorator).

  • reikhelm-core/ — pure generation library, no rendering deps (the Map struct is the contract; renderers own all art).
  • reikhelm-wasm/ — wasm-bindgen bridge that compiles core to wasm32.
  • reikhelm-viz/ — original macroquad renderer (frozen — kept, not maintained).

Browser playground & first-person explorer (JS + Canvas)

  • reikhelm-web/ — live procgen playground (reroll / seed / config sliders / per-pass scrubber) in an atmospheric torch-lit style, plus a top-down and a first-person (Eye-of-the-Beholder style) renderer and a walkable explorer.

AI-render → pixel-art pipeline (Python)

  • tools/ — depth map → local diffusion render (Z-Image on the LAN workstation) → Floyd–Steinberg dither through a 256-color palette → signature pixel art. See tools/README.md.

Combined-pool combat system (Rust + Python)

  • combat/ — a deterministic, headless combat engine built on one combined Vigor pool (HP + mana + stamina merged), so offense literally spends your survival. Sim-first: a pure Rust core (combat-core) + a batch sweep harness (combat-sim) that runs tens of thousands of fights and exports metrics, plus a Python analysis layer that measures "feel" (difficulty curve, fight duration) instead of eyeballing it. Its own Cargo workspace. See combat/README.md.

Building

# Rust workspace (host-native crates)
cargo build            # builds reikhelm-core + reikhelm-viz
cargo test

# Browser playground (wasm)
wasm-pack build reikhelm-wasm --dev --target web \
  --out-dir ../reikhelm-web/pkg --out-name reikhelm_wasm
python3 -m http.server 8011 --directory reikhelm-web

~/.cargo/bin may not be on the non-interactive shell PATH — prepend export PATH="$HOME/.cargo/bin:$PATH" to cargo commands if they're not found.