# Capture Photo from Camera

## Goal

Use the device camera to capture a photo and display it in your game UI.

## Actions Required

| Action                              | Purpose                                         |
| ----------------------------------- | ----------------------------------------------- |
| MediaServicesGetCameraAccessStatus  | Read current camera permission status           |
| MediaServicesCaptureContent         | Capture a photo (fires success/failure events)  |
| MediaServicesGetContentTexture      | Convert captured content (index 0) to Texture2D |
| MediaServicesGetCaptureContentError | Read cached error after failure (optional)      |

## Variables Needed

* cameraStatus (Enum: CameraAccessStatus)
* capturedTexture (Texture2D)
* errorCode (Int) (optional)
* errorDescription (String) (optional)

## Implementation Steps

### 1. State: CheckCameraPermission

**Action:** MediaServicesGetCameraAccessStatus

* **Outputs:**
  * status → cameraStatus
* **Next:** Use an Enum Switch/Compare on `cameraStatus`:
  * `Authorized` / `NotDetermined` → CapturePhoto
  * `Denied` / `Restricted` → ShowPermissionError

### 2. State: CapturePhoto

**Action:** MediaServicesCaptureContent

* **Inputs:**
  * captureType: Image
  * customTitle: "Take Photo" (optional)
* **Events:**
  * successEvent → ConvertToTexture
  * failureEvent → GetCaptureError

**Note:** This opens the native camera UI and waits for the callback.

### 3. State: ConvertToTexture

**Action:** MediaServicesGetContentTexture

* **Inputs:**
  * contentIndex: 0 (first/only captured image)
* **Outputs:**
  * texture → capturedTexture
* **Next:** This action finishes when conversion completes. Use the state’s `FINISHED` transition → DisplayPhoto.

### 4. State: DisplayPhoto

Assign capturedTexture to UI Image component:

```
uiImage.texture = capturedTexture
```

### 5. (Optional) GetCaptureError

On `failureEvent`, call `MediaServicesGetCaptureContentError` to read `errorCode` + `errorDescription`.

## Capture Flow

```
CheckCameraPermission
    ├─ status = Authorized/NotDetermined → CapturePhoto
    └─ status = Denied/Restricted → ShowPermissionError

CapturePhoto
    └─ Success → ConvertToTexture
        └─ DisplayPhoto
```

## Common Issues

* **Permission Denied**: Guide user to Settings to enable camera access
* **Camera Unavailable**: Check if device has a camera (some tablets don't)
* **Texture is Null**: Ensure ConvertToTexture completes before accessing texture
* **Memory Issues**: Large photos can use significant memory; consider resizing

## Platform Differences

**iOS:**

* Requires "Privacy - Camera Usage Description" in Info.plist
* Permission prompt shown automatically on first use

**Android:**

* Requires CAMERA permission in AndroidManifest.xml
* Permission request may show before camera opens

## Performance Tips

* **Texture Size**: Captured photos can be large (4K+); resize if only displaying thumbnails
* **Memory Management**: Dispose of textures when no longer needed
* **Preview vs Final**: Consider showing preview before converting to final texture


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