30 January 2009

This is news to me. Apparently EA has release one of its prototyping GameJam frameworks to the public on Google Code. The framework (called Angel) is available here:


From the site:

Angel was originally made by a group of employees at Electronic Arts Los Angeles for use in a GameJam they were planning for April of 2008. The source was opened in January 2009.

Angel provides:

  • Actors (game objects with color, shape, responses, attributes, etc.)
  • Texturing with Transparency
  • “Animations” (texture swapping at defined intervals)
  • Rigid-Body Physics
    • A clever programmer can do soft-body physics with it
  • Sound (.wav only)
  • Text Rendering with multiple fonts
  • Particle Systems
  • Some basic AI (state machine and pathfinding)
  • Config File Processing
  • Input from a mouse, keyboard, or XBox 360 controller
    • Binding inputs from a config file
  • Tuning Variables that write out to a config file
  • In-Game Console
  • Logging

It should be noted that Angel is not a framework for beginning programmers.  Again, from the site:

Angel is designed for experienced engineers. That doesn’t mean that it uses all sorts of crazy programming techniques or is difficult to use (quite the opposite: see #1), but nor does it hold the developer’s hand very much. It’s expected that a developer has at least some experience exploring a codebase to see how it works.

I think this is fine for a prototyping framework, as they’re made to get “out of the way” so that a programmer can do exactly what they want quickly.

I look at prototyping frameworks as one of the key tools a company can provide to programmers. It allows them to quickly and easily investigate a new system in your game without having to go through the complicated mess of your engine (and, yes, regardless of how awesome your engine is, it’s still a complicated mess). In my mind, this is a big thing, and I hope it continues to evolve over the next few years.