Arcade Retail Store Game

Build a fun arcade retail game for a 4-year-old that combines hardware (Raspberry Pi, arcade controls, barcode scanner) with retro 16-bit arcade aesthetics. The game features two modes: Retail (shopping simulation) and Timer (speed scanning challenge).

Hardware Requirements

Game Modes

Retail Mode

Simulates shopping experience:

Timer Mode

Speed challenge:

Core Principles

1. **Offline-First**: No API calls required for core functionality

2. **Simple SKU Management**: Parent-friendly interface (in-game or Bluetooth mobile app)

3. **Minimal Complexity**: No complex databases or security protocols needed

4. **Desktop Testing Mode**: Keyboard mappings for all arcade controls

5. **16-bit Arcade Aesthetic**: Early 1990s retro design with sound effects and visuals

Implementation Guidelines

Technology Stack

Project Structure

```

arcade-retail-game/

├── main.py # Entry point, auto-starts game

├── game/

│ ├── __init__.py

│ ├── retail_mode.py # Shopping simulation logic

│ ├── timer_mode.py # Speed challenge logic

│ ├── menu.py # Main menu and mode selection

│ ├── sku_manager.py # Product database CRUD

│ └── controls.py # Input handling (arcade + keyboard)

├── assets/

│ ├── sprites/ # 16-bit product images

│ ├── sounds/ # Arcade sound effects

│ └── fonts/ # Retro pixel fonts

├── data/

│ └── products.json # SKU database

├── tests/

│ └── test_*.py # Unit tests

└── requirements.txt

```

Key Components

#### 1. Input Handling (`controls.py`)

Map arcade controls to keyboard for testing:

#### 2. SKU Database (`products.json`)

Simple JSON structure:

```json

{

"123456789": {

"name": "Milk",

"price": 2.99,

"image": "milk.png",

"category": "dairy"

}

}

```

#### 3. Retail Mode (`retail_mode.py`)

#### 4. Timer Mode (`timer_mode.py`)

#### 5. Auto-Start Setup

Create systemd service `/etc/systemd/system/arcade-game.service`:

```ini

[Unit]

Description=Arcade Retail Game

After=graphical.target

[Service]

Type=simple

User=pi

Environment=DISPLAY=:0

ExecStart=/usr/bin/python3 /home/pi/arcade-retail-game/main.py

Restart=on-failure

[Install]

WantedBy=graphical.target

```

Enable: `sudo systemctl enable arcade-game.service`

Design Guidelines

#### Visuals

#### Sound Effects

#### UI Elements

Testing Mode

Desktop testing checklist:

Bluetooth Mobile App (Optional)

Simple React Native or Flutter app:

Bonus Feature: AI Product Images

If implementing photo-to-arcade conversion:

Development Workflow

1. **Start with Desktop Testing**

- Build game logic with keyboard controls

- Use dummy barcode data (simulated via text input)

- Test both modes thoroughly

2. **Add Hardware Support**

- Integrate GPIO for arcade buttons

- Add barcode scanner USB HID input

- Test on Raspberry Pi

3. **Polish and Assets**

- Create/import 16-bit sprites

- Add sound effects

- Tune animations and timing

4. **Setup Auto-Start**

- Configure systemd service

- Test boot-to-game flow

5. **Optional Mobile App**

- Build SKU manager app

- Implement Bluetooth sync

Example Code Snippet: Main Game Loop

```python

import pygame

from game.menu import MainMenu

from game.retail_mode import RetailMode

from game.timer_mode import TimerMode

def main():

pygame.init()

screen = pygame.display.set_mode((640, 480))

clock = pygame.time.Clock()

current_scene = MainMenu()

running = True

while running:

dt = clock.tick(60) / 1000.0 # 60 FPS

for event in pygame.event.get():

if event.type == pygame.QUIT:

running = False

current_scene.handle_event(event)

next_scene = current_scene.update(dt)

if next_scene:

current_scene = next_scene

current_scene.render(screen)

pygame.display.flip()

pygame.quit()

if __name__ == "__main__":

main()

```

Testing Checklist

Future Enhancements

Notes