This is a concept project to build a drag and drop inventory system in unity using with unity ui components. I used Signals for listening and emitting events.

https://github.com/cemuka/SignalSystem

Added a database editor tool to define new items.

Implemented so far:

• Item database and editor tool
• Drag and drop slots
• Stacking items
• Tooltip
• Tooltip checking borders
• Swap slots
• Vendor
• Right click sell

Todo features:

• Buy and sell stackable items by amount