News for hackers. Stuff that matters.

A comment on Show HN: 2d platformer game built with Codex (zero code).

Re:Show HN: 2d platformer game built with Codex (zero code) by vunderba on Monday February 16, 2026 @12:02PM (#47037415)
Nice job. As far as graphics go, I've actually done some experimentation with attempting to build sprites aligned to a well defined grid using Gen AI. You can get surprisingly far by setting up an image of a cartesian grid where each cell can be thought of as a single pixel.

Once you down-sample using nearest neighbor all the lines disappear and you're left with more traditional pixel art 32x32 tiles.

https://mordenstar.com/other/nb-sprites

[ Parent | on HN ]
Re:Show HN: 2d platformer game built with Codex (zero code) by armcat on Monday February 16, 2026 @02:41PM (#47039318)
Sweet! Have you had any luck with motion based ones, such as a character walking or an action sequence? That's where I've had the most issues.
[ Parent | on HN ]
Re:Show HN: 2d platformer game built with Codex (zero code) by vunderba on Monday February 16, 2026 @07:48PM (#47042305)
Yeah character walking (and honestly any animation) is still a real pain. I've seen some people try to use video models almost like a rotoscoping tool but it always looks kind of sus honestly.

Maintaining consistency across a set of loopable frames still takes a fair amount of manual work. Here's an example I put together using controlnet and openpose.

https://mordenstar.com/other/hobbes-animation

[ Parent | on HN ]
Re:Show HN: 2d platformer game built with Codex (zero code) by armcat on Tuesday February 17, 2026 @02:39AM (#47044724)
That example actually looks really good!
[ Parent | on HN ]