A SwiftUI game demonstrating some of the capabilities of the ColorPerception library. It was created as a demo to show how perceptual color analysis can enhance both aesthetics and accessibility in real applications.

ColoRoulette gamifies the concept of color perception and contrast accessibility.

Key game elements:

• The Wheel: The roulette wheel contains wedges of various shades of a color.
• The Challenge: When the wheel stops, quickly decide if white or black text would provide better contrast.
• The Stakes: Each correct choice earns points based on how quickly you decide.
• The Risk: If you choose incorrectly, you lose everything.
• The Strategy: "Cash out" to secure your points or continue for higher scores.

ColoRoulette showcases modern SwiftUI development practices:

• MVI Architecture: A unidirectional data flow architecture
  • Model: Represented by ViewState that contains the application state
  • View: SwiftUI views that observe and react to state changes
  • Intent: User interactions captured as GameIntent that trigger state changes
• Swift Observability: Use of Swift's @Observable macro for reactive state management
• SwiftUI Animation: Fluid animations for the spinning wheel, ball movement, level and score changes, and final outcome.
• Swift Concurrency: Use of async/await for game flow management
• Testing: Unit and UI tests with the Swift Testing and XCTest frameworks

• iOS 17.5+
• tvOS 17.5+
• visionOS 1.3+
• Swift 6.0+

1. Clone the repository:

git clone https://github.com/gregmturek/coloroulette.git

2. Open in Xcode:

cd coloroulette
open ColoRoulette.xcodeproj

3. Build and run on your preferred device or simulator.

ColoRoulette demonstrates the following ColorPerception library capabilities:

// Creating colors with specific perceived lightness
let wheelColor = Color.blue.withPerceivedLightness(75)

// Finding contrasting colors
let bestContrast = wheelColor.perceptualContrastingColor()  // Black or white, whichever contrasts better

// Calculating contrast values
let blackContrast = Color.black.perceivedContrast(against: wheelColor)
let whiteContrast = Color.white.perceivedContrast(against: wheelColor)

// Adjusting lightness for visual feedback
let darkerColor = wheelColor.adjustingPerceivedLightness(by: -10)
let lighterColor = wheelColor.adjustingPerceivedLightness(by: 15)

This project is licensed under the MIT License (see the LICENSE file for details).