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docs: curve v2 — TCRV spikeMax semantics, TerrainCurve v2 default, v1 retired (terrain-water task 06)

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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Stewart Howe 2026-08-08 00:29:34 -04:00
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Tools/Scripts/README.md
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@ -11,8 +11,9 @@ Generates the entire 2D blueprint. Roughly in order:
2. **Topography** — FastNoiseLite base height plus a mountain spine, minus a squircle distance
falloff, giving a guaranteed island. Noise frequency is divided by `scaleFactor`
(`MapSize / 1024f`) so terrain features stay the same real-world size at any map profile.
When `TerrainCurve: "v1"` (the default), the calibrated height-redistribution curve
(`HeightCurve.cs` — flat farmable lowlands, 50 m plateau shelf, 220 m peak cap) reshapes
When `TerrainCurve: "v2"` (the default), the calibrated height-redistribution curve
(`HeightCurve.cs` — flat farmable lowlands, 50 m plateau shelf, and a per-seed-normalized
spike to the 420 m peak cap: every island's tallest point reaches the ceiling) reshapes
above-sea terrain after noise/falloff/Trench and before the crater carve; biome
classification reads a retained uncurved map, so biomes are identical either way. Drops the
`0_height` hillshade snapshot (hypsometric bands × NW hillshade) in both modes.