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openspec/changes/enterprise-gaming-controller/proposal.md

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+# OpenSpec Change: enterprise-gaming-controller
+
+- **Change ID**: enterprise-gaming-controller
+- **Package**: `@suaveplan/controller`
+- **Category**: gaming/engine
+- **Target path**: `gaming/engine/controller`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/controller.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/controller` on the genesis branch from scratch at enterprise quality. The package provides controller abstractions — a unified input layer that normalises keyboard, mouse, gamepad (Web Gamepad API), touch, and virtual on-screen controls into a single `ActionMap`. Actions are named bindings mapped to digital (pressed/released) and analog (axis) values. A `ControllerManager` polls inputs each tick, resolves conflicts, applies deadzone and sensitivity curves, and fires `@suaveplan/events` action events. Genesis adds Zod binding schemas, structured errors, OTel input-latency histogram, and 100% coverage.
+
+---
+
+## Current-state audit (genesis)
+
+Package does not exist on genesis yet — fresh build.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/error` (`workspace:^`) | `ControllerError`; `CONTROLLER.*` codes |
+| `@suaveplan/types` (`workspace:^`) | `Clock` |
+| `@suaveplan/events` (`workspace:^`) | Action-pressed/released events |
+| `zod` (`catalog:forms`) | Binding config schemas |
+| `@opentelemetry/api` (`catalog:observability`) | Input-latency histogram |
+
+---
+
+## Public API surface
+
+```ts
+function createControllerManager(options?: ControllerManagerOptions): ControllerManager
+
+interface ControllerManagerOptions {
+  deadzone?: number          // analog deadzone 0–1, default 0.1
+  bindings?: ActionBinding[]
+  clock?: Clock
+}
+
+interface ControllerManager {
+  registerBinding(binding: ActionBinding): void
+  removeBinding(action: string): void
+  isPressed(action: string): boolean
+  getAxis(action: string): number       // -1 to 1
+  poll(dt?: number): void               // called each game tick
+  destroy(): void
+}
+
+type InputSource = 'keyboard' | 'mouse' | 'gamepad' | 'touch' | 'virtual'
+
+interface ActionBinding {
+  action: string
+  source: InputSource
+  key?: string              // keyboard: e.g. 'KeyW', 'Space'
+  button?: number           // gamepad button index
+  axis?: number             // gamepad axis index
+  mouseButton?: number      // 0=left, 1=middle, 2=right
+  touchId?: number
+  invert?: boolean
+  sensitivity?: number
+}
+
+// Keyboard/mouse adapter (for environments with DOM)
+function createKeyboardAdapter(): InputAdapter
+function createGamepadAdapter(): InputAdapter
+function createVirtualAdapter(): InputAdapter & { setAxis(action: string, value: number): void }
+
+interface InputAdapter {
+  readonly source: InputSource
+  isPressed(key: string | number): boolean
+  getAxis(index: number): number
+  attach(): void
+  detach(): void
+}
+```
+
+### Error codes
+
+```ts
+type ControllerErrorCode =
+  | 'CONTROLLER_ACTION_NOT_FOUND'
+  | 'CONTROLLER_DUPLICATE_BINDING'
+  | 'CONTROLLER_INVALID_AXIS'
+  | 'CONTROLLER_ADAPTER_ERROR'
+```
+
+---
+
+## New additions for genesis
+
+1. **Multi-source conflict resolution** — when multiple sources bind the same action, the last non-zero value wins.
+2. **Sensitivity curves** — linear, quadratic, and cubic response curves for analog axes.
+3. **Virtual adapter** — headless adapter for touch/on-screen controls; state driven by caller (used by `@suaveplan/react-controller`).
+4. **OTel** — `controller.poll_duration_ms` histogram; `controller.active_bindings` gauge.
+
+---
+
+## File layout
+
+```text
+gaming/engine/controller/
+  package.json
+  tsconfig.json
+  vitest.config.ts
+  src/
+    index.ts
+    error-codes.ts
+    constants/index.ts
+    types/common.ts
+    types/common.md
+    core/
+      controller-manager/
+        controller-manager.ts
+        controller-manager.md
+        controller-manager.types.ts
+        controller-manager.test.ts
+        index.ts
+    adapters/
+      keyboard-adapter/
+        keyboard-adapter.ts
+        keyboard-adapter.md
+        keyboard-adapter.test.ts
+        index.ts
+      gamepad-adapter/
+        gamepad-adapter.ts
+        gamepad-adapter.md
+        gamepad-adapter.test.ts
+        index.ts
+      virtual-adapter/
+        virtual-adapter.ts
+        virtual-adapter.md
+        virtual-adapter.test.ts
+        index.ts
+    utils/
+      sensitivity.ts
+      sensitivity.md
+      sensitivity.test.ts
+  tests/
+    integration.test.ts
+```
+
+---
+
+## Impact
+
+**Downstream**: `@suaveplan/react-controller` wraps virtual adapter in React hooks; `@suaveplan/r3f-controller` drives Three.js camera/character from action map. Prerequisites: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/events`.