# Ordinary local camera observation

`ERR_OrdinaryLookObserver.c` is an opt-in read-only companion to the ordinary input observer, excluded from Workbench builds. It adds no timer, input, camera, actor, menu or action mutation. The [183944 ordinary Chat run](evidence/game-2026-09-19-183944-relative-look/runner.json.txt) passes native compilation, actual camera response/return and subsequent keyboard delivery, with zero captured errors and verified cleanup. Response was 1.935°, return error 0.149°, over 2101 ms of native samples. The earlier [183353 review](evidence/look-review-2026-09-19-183353/review.json) corrected a checker timing assumption without changing that run's failed verdict. Policy tests alone do not establish native mouse response.

Enable `-errOrdinaryLookObserve <nonce>` only alongside the identical `-errOrdinaryInputObserve <nonce>` and ordinary Core/Chat selection. It also requires a local server in `RplMode.None`, a non-console process, and a canonical active PRISON participant. The existing observer supplies the original clock start and sample index, so no new observation lifetime is created.

## Integration

After the existing observer increments `m_Samples` and validates the ordinary SAMPLE (without changing its schedule), invoke:

```c
ERR_OrdinaryLookObserver.Sample(m_Mode, m_World, m_Controller, m_Actor,
 m_Nonce, m_Start, m_Samples, now);
```

There is no additional cleanup callback. One process-wide attempt pins the original mode, world, controller, actor, roster life/account and player camera. It stops permanently on context loss, menu opening, changed explicit opt-in, clock/sample violation or invalid pose. When the main observer stops calling it, it performs no work. Restarting a mode cannot adopt another camera under the old attempt.

## Exact native API basis

Installed vanilla sources used:

* `scripts/Game/generated/Player/PlayerController.c`: `GetPlayerCamera()` returns the controller's `PlayerCamera`.
* `scripts/Game/generated/Camera/CameraBase.c:22`: `GetWorldCameraTransform(out vector mat[4])` is documented as the current camera world transformation. Its forward basis `[2]` and position `[3]` supply the actual view; the body is not used as a view approximation.
* `scripts/Game/generated/ChimeraGame.c:27` and `generated/Camera/CameraManager.c:19`: the active manager's `CurrentCamera()` must equal the exact pinned controller camera, before and after native reads.
* Actor `GetTransform` provides a separately logged body forward and position. Neither camera transform application nor setters are called.

All entity/world/controller/roster bindings are rechecked per sample. Any top menu blocks observation, including inventory. The camera's world must match the original world. Basis lengths must be finite and within 0.5–2 before normalization; all emitted vector components and native turn inputs must be finite and bounded. Indices must be contiguous from 1, at most 450, with a monotonic real clock still less than 45 seconds from the **original input-observer start**. Pose sampling may miss short-lived input deltas between ticks; measured view response remains necessary.

## Log contract

The first valid sample emits one basis declaration followed by the sample:

```text
ERR LOOK OBSERVE: run=N sample=1 real=T BASIS native-player-camera-world-transform
ERR LOOK OBSERVE: run=N sample=1 real=T SAMPLE direction=<x,y,z> camera=<x,y,z> body=<x,y,z> bodyForward=<x,y,z> turn=<right,up,0>
```

`direction` and `bodyForward` are normalized. `camera` and `body` are distinct world positions. `turn` contains native `CharacterTurnRight` and `CharacterTurnUp` values; it does not assert that a helper sent input. Nonce/index/real clock match the corresponding ordinary input SAMPLE. No account identifier is logged.

On invalidation, exactly one terminal record is emitted:

```text
ERR LOOK OBSERVE: run=N sample=I real=T CANCELLED menu-opened
```

Other reasons are `explicit-scope-lost`, `original-binding-changed`, `sample-or-clock-bound`, `native-camera-or-player-context-lost` and `invalid-native-pose`. No sample follows cancellation. The main input observer continues independently. Thus normal inventory opening **after** the completed look proof may legitimately cancel look telemetry; proof verification must examine only the agreed interval before the first W movement, not treat later menu cancellation as failure of an already-observed look response.

The external helper must require fresh stable native baseline samples, actual direction change after its bounded positive relative input, and a fresh return near baseline after its negative input. It must independently retain the existing stationary-body, private-display/window/focus ownership and input-release checks. This utility issues no authorization to send input and claims no gameplay, escape, multiplayer or performance qualification.