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Activity Forums Adobe After Effects Expressions Creating a simple platformer game engine in AE

  • Creating a simple platformer game engine in AE

    Posted by Eric Barker on January 24, 2014 at 2:10 am

    I just finished up a TV commercial for a local sports store that looks like a 8/16bit video game platformer (Mario/Sonic). Here’s the results:

    https://www.dropbox.com/s/pd1mkpto0kuusc1/BeaverSports_8bitBilly.mp4

    Unfortunately, this took HOURS and HOURS because I had to do all the positioning manually via keyframe animation. There are loads of expressions to animate the sprites and automate camera tracking, but the character animation, jumping, everything, is baked.

    I may want to do other versions of this ad for different different sports, but it would actually have been easier if I had coded a simple platforming engine to achieve the motion. I could use keyframes as triggers in lue of button presses. UNFORTUNATELY, this is impossible using standard expression protocol, since expressions are ephemeral and can’t store values from cycle to cycle. Supposedly there are methods using text fields to store values, but I haven’t been able to make anything work, or find a good writeup on how that would be done. I’ve read concepts of storing functions in text fields, but nothing that allows me to re-evaluate a previous value. Without that, I can’t make this work.

    Any thoughts? Even just a simple proof of concept.

    Television Producer
    KTVF-11 Fairbanks, Alaska
    video.ericbarker.com

    Tim Drage replied 12 years, 1 month ago 2 Members · 1 Reply
  • 1 Reply

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