Inventory System Pro

A grid-based inventory system for Unity with drag-and-drop UI, item stacking, variable item sizes, and JSON save/load — all data-driven through ScriptableObjects, so designers can add new items without touching code.

Features:

- Grid-based inventory (Diablo-style variable item sizes, custom shapes)

- Drag-and-drop UI with live drop-validity highlighting

- Item stacking with configurable max stack size

- JSON save/load that survives across play sessions

- Data-driven items via ScriptableObjects

- Clean, interface-driven architecture, easy to extend

- Full source code included, documented, with automated tests

Requirements: Unity 2021.3 LTS or newer.

What's NOT included: 3D models, character art, or game-specific UI skinning — this is a systems/logic asset, built to slot into your own art direction.