🧿 Inventory & Shop System in Unity

🎮 Overview

This is a Unity-based 2D project that features a fully functional Inventory and Shop System. The system supports:

• Item gathering with increasing rarity
• Buying and selling via drag-and-drop with confirmation popups
• Weight management and gold currency
• UI-based interactivity with clean transitions and feedback
• Modular and extensible architecture

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🧰 Features

• Inventory panel with slot-based item handling
• Shop panel for transactions
• Confirmation & quantity selection UI
• Tooltip system
• Gold and weight system
• Raycast blocker for modal behavior
• Toast and popup messages
• Sound and BGM system

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🧱 Architecture Overview

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🧩 Design Patterns & Principles Used

Pattern/Principle	Usage Location
Singleton	SoundManager for global sound access
Observer	UI event subscriptions (e.g. OnHide, OnConfirmPopup)
ScriptableObject	ItemData for flexible item definition
Separation of Concerns	UIManager, ShopController, InventoryManager handle distinct responsibilities
Event-Driven Design	Popup confirmations and transaction callbacks
Dependency Injection (Manual)	UI references injected via Inspector instead of hard references
Open/Closed Principle	Systems like ItemData, TooltipUI are extensible
DRY Principle	Shared methods for UI blocking, messaging, popup control

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🎥 Gameplay Video

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🧪 How to Run

1. Clone this repo.
2. Open in Unity 2022.3 or later.
3. Open Scenes/Main.unity.
4. Press Play and interact with the UI.