Jeff Halter

@halcyon@bitbang.social · Joined ⁨Nov⁩ ⁨2022⁩

Drunk on 90's computing nostalgia, hacking on After Dark, HyperCard, and Hotline.

morphing.cloud
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Surprising finding from deep down the After Dark rabbit hole: instead of a simple, straightforward static image, the After Dark 2.0 control panel faceplate was rendered *procedurally* with code that produced randomly positioned stars in the background! Every time the control panel opened, it rendered a slightly different faceplate. Wild! 🤯

This subtle behavior is seemingly unique to 2.0.

Here are 6 procedurally rendered examples that reveal different star positions if you look closely:

After Dark 2.0 faceplate examples from emulated cdev code
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I'm still processing all of the cool stuff I saw at #vcfwest this weekend. So glad to finally attend!

One item that caught my eye was this 1985 issue of Creative Computing for sale at the book stand. "3-D fractals on my micro? Yes please!"

My jaw dropped when I opened the article to find, essentially, the Mountains screensaver from More After Dark, along with source for the algorithm in 3 languages! This must have looked bad-ass on a TRS-80 or Apple II at the time.

Best $1 purchase ever!

1985 Creative Computing magazine cover
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Mountains After Dark module in Afterglow
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DrawMorph: how it started/how it's going.

The DrawMorph module in After Dark 3.0 comes with a cute little drawing program for editing the animation frames that compose the morphing flip-book style animation. It's a complete one-off UI out of hundreds of modules, but I couldn't resist recreating it in Swift UI and adding a few modern quality of life affordances, like a timeline filmstrip and "show previous layer" onion skin. 👨‍🎨

DrawMorph After Dark module frame editor, in the original software
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DrawMorph After Dark module frame editor, in Afterglow's custom Swift UI editor
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If there's anyone out there who has physical copies of After Dark software and a scanner, please consider contributing box art scans to the Internet Archive so I can include cool spinn-y 3D boxes in my After Dark emulator.

I have After Dark 2.0, More After Dark and Star Trek, but anything else is needed.

Save me from buying all of this stuff on eBay! I would be so grateful! 🙏

After Dark media installer in Afterglow
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I've released Stacks v1.0a17 with many compatibility fixes, with a focus on working through problems in the fascinating "HyperCard 10th Anniversary" stack from the Internet Archive.

What an amazing time capsule of Apple's history this thing is. Card 2 says that among others, the stack was presented to "Steve Jobs, Acting CEO" in late 1997. I can only imagine his enthusiasm!

It's also an absolute flex: animations, music, colors, speech, drag and drop. Not 100% working yet, but progress.

I'm floored by all of the HyperCard enthusiasm out there! Wow.

I've released v1.0a16 with expanded stack compatibility -- including enough XFCN support to render the navigation menus in the "Apple Service Source May 1993" collection of stacks. This one is a huge download from the IA browser, but it's worth it. The exploded isometric pixellated diagrams are so fun to explore!

A glorious isometric technical diagram w/ an exploded view of a 21" Color Display
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An XFCN rendering a menu by running m68k code in Musashi and handling the A-line traps with custom handlers
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