The problem I needed to solve
Audio preferences should not disappear when moving from the menu into Hokm. I needed shared state that persists and informs active consumers when it changes.
Implementation in this snapshot
CardGameSettingsService lazily loads sound, music, vibration and language from PlayerPrefs. SetMusicEnabled and other setters call SaveAndNotify only when their values change.
The design decision and its cost
SettingsChanged delivers a complete CardGameSettingsState. Persian is the default language, while a previously saved language is retained; switching language changes the central preference.
Current boundaries
Local persistence is not a cloud account or cross-device synchronization. A vibration preference also does not prove haptic feedback is implemented on every device.
Shared preferences, consumer-specific reactions
When a player disables music in the menu and enters Hokm, the preference should follow them. EnsureLoaded reads PlayerPrefs lazily, and CurrentState combines sound, music, vibration and language. Setters return early for unchanged values, so a UI refresh sending the same value does not necessarily save or publish another event. Newly activated listeners must read current state rather than wait only for future changes.
CardGameAudioManager demonstrates consumption: OnEnable subscribes to SettingsChanged and immediately applies CurrentState; OnDisable unsubscribes. Music and effects use separate AudioSources, and PlaySfx checks sound preference before PlayOneShot. ApplySettings mutes disabled music and pauses it if playing. These details explain preference application without supplying measurements of audio quality, latency or behavior across devices. Shared settings are distinct from audio-experience evaluation.
SaveAndNotify writes four keys, calls PlayerPrefs.Save and then publishes the complete state. ResetToDefaults enables all options and selects Persian immediately. Saved language is read through a direct enum cast without range validation in this service, so local loading does not automatically repair every invalid value. Vibration remains a stored preference; proving haptic execution requires its hardware consumer and call path. A saved boolean alone does not implement that capability.
What this stage taught me
For me, this creates continuity. Menu and game should understand the same person’s preferences, while each consumer remains responsible for correctly applying them to its own audio or text.
