A smart navigation system for University of Washington campus that accounts for time-based building access restrictions.

• Time-aware routing: Calculates optimal paths based on current time and building access schedules
• Building access restrictions: Accounts for entrance availability by time of day and day of week
• Smart pathfinding: Uses Dijkstra's algorithm with access constraints
• Real-time validation: Warns users about access restrictions

• Frontend: HTML, CSS, JavaScript
• Backend: Node.js, Express
• Algorithm: Dijkstra's pathfinding with time constraints

1. Install dependencies:

npm install

2. Start the server:

npm start

3. Open your browser to http://localhost:3000

├── server/
│   ├── index.js           # Express server
│   ├── data/              # Campus data
│   ├── routes/            # API routes
│   └── utils/             # Pathfinding algorithms
├── public/
│   ├── index.html         # Frontend UI
│   ├── style.css          # Styles
│   └── app.js             # Frontend logic
└── package.json

• GET /api/buildings - Get all buildings with access info
• POST /api/route - Calculate optimal route between two locations
• GET /api/access/:buildingId - Check building access at specific time

The system maintains a graph of campus locations (buildings, intersections, entrances) with:

• Distance/time weights between nodes
• Access schedules for each entrance
• Real-time filtering based on current time

Routes are calculated using a modified Dijkstra's algorithm that excludes inaccessible paths.