# OpenSpec Change: enterprise-gaming-r3f-npc

- **Change ID**: enterprise-gaming-r3f-npc
- **Package**: `@suaveplan/r3f-npc`
- **Category**: gaming/gameplay
- **Target path**: `gaming/gameplay/r3f-npc`
- **Status**: PROPOSED
- **Date**: 2026-04-24

---

## Summary

Deliver `@suaveplan/r3f-npc` on the genesis branch from scratch at enterprise quality. The package is the R3F rendering layer for `@suaveplan/npc`: `NpcMesh` composing `@suaveplan/r3f-character` locomotion with NPC state from the NpcRegistry, `BehaviorTreeDebug` overlay visualizing node states (running/success/failure) in a floating tree panel, `NpcNameplate` billboarded nameplate with health bar and status icon, `DialogueTrigger` component showing proximity-based interaction prompt and wiring into `@suaveplan/dialogue`, and `NpcMarker` minimap dot. Genesis adds 100% coverage and Storybook stories.

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## Available workspace deps

`@suaveplan/npc`, `@suaveplan/behavior-tree`, `@suaveplan/dialogue`, `@suaveplan/r3f-character`, `@suaveplan/r3f-ui`, `@suaveplan/error`, `@suaveplan/types`, react, `@react-three/fiber`, `@react-three/drei`, three.

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## Public API surface

```ts
function NpcMesh(props: NpcMeshProps): JSX.Element
// npcId, model, showNameplate, showDebug

function BehaviorTreeDebug(props: BehaviorTreeDebugProps): JSX.Element
// treeRef, visible, position

function NpcNameplate(props: NpcNameplateProps): JSX.Element
// name, health, maxHealth, statusIcon

function DialogueTrigger(props: DialogueTriggerProps): JSX.Element
// npcId, triggerRadius, prompt

function NpcMarker(props: NpcMarkerProps): JSX.Element
// npcId, icon, color
```

---

## File layout

```text
gaming/gameplay/r3f-npc/
  package.json / tsconfig.json / vitest.config.ts
  src/
    index.ts / error-codes.ts
    types/common.ts + md
    components/
      NpcMesh/ (tsx + md + test + stories + index)
      BehaviorTreeDebug/ (tsx + md + test + stories + index)
      NpcNameplate/ (tsx + md + test + stories + index)
      DialogueTrigger/ (tsx + md + test + stories + index)
      NpcMarker/ (tsx + md + test + stories + index)
  tests/integration.test.ts
```