I've released one of my game development tools, Xcode asset catalog generator, on GitHub. The tool builds the Xcode asset catalog from source assets and generates images with optimized sizes for iPad, iPhone, Apple TV and Mac.
File structure for game development. When I was starting my first game last year I was looking for this type of information but I couldn't find any good resources. Here's a breakdown of how I organize my game projects.
As of Xcode v9.3.1, Debug View Hierarchy displays SpriteKit scenes with a SKCameraNode incorrectly. My observation and workaround.