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Xcode Asset Catalog Generator

Swift Gamedev Twitter: @artstorm

Xcode asset catalog generator for game development. It's a batch processing command line tool that builds the asset catalog from source assets and generates images with optimized sizes for iPad, iPhone, AppleTV and Mac.

Features

  • Creates sizes in @1x, @2x and @3x per device type.
  • Saves the output directly to the asset catalog in Xcode.
  • Handles numbered image sequences.
  • Handles Sprite Atlas generation.
  • Handles vector images as Universal, Single Scale. PDF and SVG (Xcode 12+).
  • Specifically targets game development with SpriteKit.
  • Tracks converted images so on each re-generation only new or updated source images are generated to the asset catalog.
  • In early development, available as-is. The same goes for the documentation.

I've developed the tool for personal usage, so everything is subject to change between versions and it does have quite a few rough edges.

Usage

Xcode Asset Catalog Generator - Usage Tutorial

I recommend watching the Usage Tutorial Video to quickly get an understanding of how the tool works and how to use it.

Reference

The wiki has more detailed documentation of how to configure and use the tool.

Installation

  1. Node.js is required for the tool to work which can easily be installed using Homebrew.
  2. Clone or download this repository.
  3. Install the dependencies. npm install.
  4. Configure your asset build. (see wiki).

Generate

Once the tool is installed and configured, assets can be generated from the command line. The tool provides a dev mode to try the generation to an output folder in the tool's installation folder.

# Builds the assets to a target folder for dev purposes.
npm run dev

# Builds the assets to the assets folder in Xcode.
npm run prod

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Batch processing Xcode asset catalog generator for game development.

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