57 lines
1.9 KiB
Markdown
57 lines
1.9 KiB
Markdown
# OpenSpec Change: enterprise-gaming-r3f-vegetation
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- **Change ID**: enterprise-gaming-r3f-vegetation
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- **Package**: `@suaveplan/r3f-vegetation`
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- **Category**: gaming/scene
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- **Target path**: `gaming/scene/r3f-vegetation`
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- **Status**: PROPOSED
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- **Date**: 2026-04-24
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- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/r3f-vegetation.md`
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---
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## Summary
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Deliver `@suaveplan/r3f-vegetation` on the genesis branch from scratch at enterprise quality. The package provides R3F procedural vegetation with biome rules, LOD, and instanced placement. An `InstancedMesh`-backed placement engine scatters trees, grass, and rocks according to configurable biome rules (height/slope thresholds → vegetation type); LOD reduces instance count at distance; a wind animation vertex shader applies sinusoidal sway. Genesis adds Zod biome config schemas, structured errors, OTel instance-count gauge, and 100% coverage.
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---
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## Available workspace deps
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`@suaveplan/error`, `@suaveplan/types`, `@suaveplan/r3f-terrain`, react, `@react-three/fiber`, `@react-three/drei`, three.
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---
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## Public API surface
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```ts
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function Vegetation(props: VegetationProps): JSX.Element
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// biomeRules, density, maxDistance, windStrength
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function VegetationLayer(props: VegetationLayerProps): JSX.Element
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// type, mesh, count, scatterRadius
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function useVegetation(): VegetationCon```text
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---
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## File layout
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```text
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gaming/scene/r3f-vegetation/
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package.json / tsconfig.json / vitest.config.ts
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src/
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index.ts / error-codes.ts / constants/index.ts
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types/common.ts + md
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core/
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biome-rules/ (ts + md + test + index)
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instance-placer/ (ts + md + types + test + index)
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shaders/
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wind.glsl + wind.ts (glsl string export)
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components/
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Vegetation/ (tsx + md + test + stories + index)
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VegetationLayer/ (tsx + md + test + stories + index)
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hooks/use-vegetation.ts + md + test
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tests/integration.test.ts
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```
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