unity-reusable-systems

Build every gameplay system as a self-contained UPM package. Data lives in ScriptableObjects, behavior lives in small single-responsibility MonoBehaviours, and systems talk through SO Event Channels — never direct references.

| One system = one UPM package | Create a "shared contracts" package with interfaces | | Data in ScriptableObjects, behavior in MonoBehaviours | Put data and behavior in the same class |

| MonoBehaviour [SerializeField] only for SO refs, component refs, scene refs, UnityEvents | [SerializeField] primitives (float, int, bool, string, LayerMask, enum, AnimationCurve) directly on MonoBehaviours — these belong in an SO Config asset | | SO Event Channels for cross-system communication | Use singletons, service locators, or static managers |

在建立可重複使用的 Unity 遊戲系統、建立 UPM 套件或為庫存、戰鬥、對話、任務或儲存/載入等遊戲系統設計基於 ScriptableObject 的模組化架構時使用。當連接多個需要在沒有直接依賴關係的情況下進行通訊的獨立 Unity 套件時也可使用。 來源：eyenpi/unity-systems-skills。