# RFID Keycard Lock System - Planning Documentation

Welcome to the planning documentation for the RFID Keycard Lock System feature!

## Quick Links

📋 **[00_OVERVIEW.md](00_OVERVIEW.md)** - Executive summary, user stories, system architecture
🏗️ **[01_TECHNICAL_ARCHITECTURE.md](01_TECHNICAL_ARCHITECTURE.md)** - Detailed technical design, file structure, code architecture
✅ **[02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md)** - Complete implementation checklist with tasks, estimates, and priorities
🎨 **[03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md)** - Asset specifications, placeholders, and creation guides

---

## What is This Feature?

The RFID Keycard Lock System adds a new lock type to BreakEscape inspired by the **Flipper Zero** device. Players can:

1. **Use physical keycards** to unlock RFID-protected doors
2. **Clone keycards** using an RFID cloner device (Flipper Zero-style interface)
3. **Emulate saved cards** to unlock doors without the physical card
4. **Secretly clone NPC badges** during conversations for social engineering gameplay

---

## Feature Highlights

### 🎮 Realistic Flipper Zero Interface
- Authentic monospace display
- Orange and black color scheme
- Navigation breadcrumbs (RFID > Saved > Emulate)
- Card reading animations
- EM4100 RFID protocol support

### 🔐 Two Gameplay Modes

**Unlock Mode**: Tap a keycard or emulate a saved card to open doors
**Clone Mode**: Read and save RFID card data from NPCs or your own cards

### 🗣️ Ink Conversation Integration
New tag: `# clone_keycard:Card Name|HEX_ID`
Allows stealthy card cloning during NPC conversations

### 📦 Inventory Integration
Click keycards in inventory to clone them (requires RFID cloner)

---

## Documentation Structure

### [00_OVERVIEW.md](00_OVERVIEW.md)
**Purpose**: High-level understanding of the feature
**Audience**: Everyone (designers, developers, stakeholders)
**Contents**:
- Executive summary
- User stories (5 scenarios)
- System architecture diagram
- Component breakdown
- Key features
- Technical specifications
- Success criteria
- Benefits and alignment with existing systems

**Start here if**: You want to understand what this feature does and why

---

### [01_TECHNICAL_ARCHITECTURE.md](01_TECHNICAL_ARCHITECTURE.md)
**Purpose**: Detailed technical implementation guide
**Audience**: Developers
**Contents**:
- Complete file structure
- Code architecture for all classes
- Integration points with existing systems
- Data flow diagrams (unlock, clone, emulation)
- CSS styling strategy
- State management
- Error handling
- Performance considerations
- Accessibility notes

**Start here if**: You need to understand how to build this feature

---

### [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md)
**Purpose**: Step-by-step implementation checklist
**Audience**: Developers doing the work
**Contents**:
- 8 implementation phases
- 90+ individual tasks
- Priority levels (P0-P3)
- Time estimates per task
- Acceptance criteria for each task
- Test cases
- Dependencies diagram
- Risk mitigation

**Start here if**: You're ready to start coding

---

### [03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md)
**Purpose**: Asset creation specifications
**Audience**: Artists, asset creators
**Contents**:
- All required sprites and icons
- Exact dimensions and formats
- Color palettes
- Placeholder creation scripts
- Image editing guidelines
- Asset testing checklist
- Reference images and links

**Start here if**: You're creating the visual assets

---

## Implementation Roadmap

```
Week 1
├─ Day 1-2: Core Infrastructure (Data, Animations, UI Classes)
├─ Day 3-4: Minigame Controller
└─ Day 5: System Integration

Week 2
├─ Day 6: Styling (CSS)
├─ Day 7: Assets (Sprites, Icons)
├─ Day 8: Testing & Integration
├─ Day 9: Documentation & Polish
└─ Day 10: Final Review & Deploy
```

**Total Estimated Time**: 102 hours (~13 working days)
**Note**: Updated from 91 hours after comprehensive implementation review

---

## Key Design Decisions

### Why Flipper Zero?
- **Recognizable**: Popular hacking tool, culturally relevant
- **Authentic**: Teaches real RFID concepts
- **Fun**: Satisfying UI to interact with
- **Expandable**: Can add more protocols later

### Why EM4100 Protocol?
- **Simple**: 125kHz, easy to implement
- **Common**: Most access cards use this
- **Realistic**: Real-world standard
- **Educational**: Players learn actual RFID tech

### Why Two Modes (Unlock vs Clone)?
- **Flexibility**: Multiple puzzle solutions
- **Progression**: Upgrade from cards to cloner
- **Stealth**: Social engineering gameplay
- **Realism**: Matches real-world RFID usage

---

## How to Use This Documentation

### For Project Managers
1. Read [00_OVERVIEW.md](00_OVERVIEW.md) for scope
2. Review [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md) for timeline
3. Use task estimates for planning

### For Developers
1. Read [00_OVERVIEW.md](00_OVERVIEW.md) for context
2. Study [01_TECHNICAL_ARCHITECTURE.md](01_TECHNICAL_ARCHITECTURE.md) thoroughly
3. Follow [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md) step-by-step
4. Reference [03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md) for placeholders

### For Artists
1. Skim [00_OVERVIEW.md](00_OVERVIEW.md) for visual style
2. Use [03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md) as your guide
3. Follow placeholder scripts to get started quickly
4. Reference Flipper Zero device for inspiration

### For QA/Testers
1. Read [00_OVERVIEW.md](00_OVERVIEW.md) for user stories
2. Use user stories as test scenarios
3. Follow test cases in [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md) Phase 6

---

## Quick Start

**Want to implement this feature? Follow these steps:**

1. ✅ Read this README
2. ✅ Review [00_OVERVIEW.md](00_OVERVIEW.md) - User Stories section
3. ✅ Study [01_TECHNICAL_ARCHITECTURE.md](01_TECHNICAL_ARCHITECTURE.md) - Code Architecture section
4. ✅ Start [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md) - Phase 1, Task 1.1
5. ✅ Create placeholder assets using [03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md) scripts
6. ✅ Code, test, iterate!

---

## Example Usage in Scenarios

### Scenario JSON
```json
{
  "room_server": {
    "locked": true,
    "lockType": "rfid",
    "requires": "server_keycard"
  },
  "startItemsInInventory": [
    {
      "type": "keycard",
      "name": "Server Room Keycard",
      "key_id": "server_keycard",
      "rfid_hex": "9876543210",
      "rfid_facility": 42,
      "rfid_card_number": 5000
    },
    {
      "type": "rfid_cloner",
      "name": "RFID Cloner",
      "saved_cards": []
    }
  ]
}
```

### Ink Conversation
```ink
=== talk_to_ceo ===
# speaker:npc
Hello, what can I do for you?

* [Ask about server access]
  # speaker:npc
  I have the server keycard, but I can't give it to you.
  -> hub

* [Secretly clone their keycard]
  # clone_keycard:CEO Keycard|ABCDEF0123
  # speaker:player
  *Subtly scans their badge*
  # speaker:npc
  Is something wrong?
  -> hub
```

---

## Success Metrics

### Must-Have (P0)
- ✅ RFID locks work in scenarios
- ✅ Keycards unlock matching doors
- ✅ RFID cloner can save and emulate cards
- ✅ Clone mode works from Ink conversations
- ✅ Flipper Zero UI is recognizable

### Should-Have (P1)
- ✅ All animations smooth
- ✅ Multiple saved cards supported
- ✅ Error messages clear
- ✅ Inventory click triggers clone

### Nice-to-Have (P2-P3)
- 🎵 Sound effects
- 🎨 Advanced animations
- 🔧 Multiple RFID protocols
- ⚙️ Card programming features

---

## Related Systems

This feature integrates with:
- **Lock System** (`unlock-system.js`) - New lock type
- **Minigame Framework** (`minigame-manager.js`) - New minigame
- **Inventory System** (`inventory.js`) - Clickable items
- **Ink Conversations** (`chat-helpers.js`) - New tag
- **Key/Lock System** (`key-lock-system.js`) - Similar patterns

---

## Questions?

**Feature unclear?** → Read [00_OVERVIEW.md](00_OVERVIEW.md)
**Implementation details?** → Read [01_TECHNICAL_ARCHITECTURE.md](01_TECHNICAL_ARCHITECTURE.md)
**How to build it?** → Follow [02_IMPLEMENTATION_TODO.md](02_IMPLEMENTATION_TODO.md)
**Need assets?** → Check [03_ASSETS_REQUIREMENTS.md](03_ASSETS_REQUIREMENTS.md)

---

## Version History

| Version | Date | Author | Changes |
|---------|------|--------|---------|
| 1.0 | 2024-01-15 | Planning Team | Initial planning documentation |

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**Status**: ✅ Planning Complete, Ready for Implementation
**Next Action**: Begin Phase 1, Task 1.1 - Create base files and folder structure
**Estimated Completion**: 11 working days from start

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## License & Attribution

- **Flipper Zero** is a trademark of Flipper Devices Inc.
- This implementation is inspired by Flipper Zero but is an independent creation
- All assets created should be original or properly licensed
- RFID/NFC technical specifications are based on industry standards (EM4100, ISO 14443, etc.)

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**Happy Building! 🛠️**
