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-   -   "Walking Man" for 8080 computers. (https://www.vintage-radio.net/forum/showthread.php?t=154972)

Argus25 17th Mar 2019 4:52 am

"Walking Man" for 8080 computers.
 
I just finished my "Walking Man" for the 1976 vintage SOL-20 computer. And put up a brief you tube video. The Sol-20 just has character text, no graphics screens.

It was harder than it looks. Part of the problem with a walking stick figure is that if the arms & legs (R&L) don't look different, then when they swing past the central axis (or body) and leave again, the brain can interpret that they have simply reversed directions and in that case a walking motion is not simulated. So to get the brain (visual system) to think they have swung past the body, they need to have a different posture for the R & L arms and legs. Since in this case there are only a limited number of character symbol positions on the screen to get a plausible looking shape is was tricky to get the walking to look realistic. On top of that I have only just learnt some 8080 assembly language and it was a challenge for me to program it (I mainly work on the hardware side of things).

https://www.youtube.com/watch?v=Pebj4s1sUU0

I got the idea for this from some simple walking man graphics I have seen at pedestrian crossings on arrays of LED's and the simplicity of them has always appealed to me.

SiriusHardware 17th Mar 2019 10:49 am

Re: "Walking Man" for 8080 computers.
 
Well done! I look forward to an entirely character based 'Prince Of Persia' with the figure performing various parkour moves next. :)

M0FYA Andy 17th Mar 2019 11:01 am

Re: "Walking Man" for 8080 computers.
 
I'm afraid even with the asymmetry, I just see the image of Harry Worth and his reflection in the shop window!

Alvin 18th Mar 2019 11:03 am

Re: "Walking Man" for 8080 computers.
 
Quote:

Originally Posted by M0FYA Andy (Post 1129563)
I'm afraid even with the asymmetry, I just see the image of Harry Worth and his reflection in the shop window!

:-D:-D

Alvin 18th Mar 2019 11:36 am

Re: "Walking Man" for 8080 computers.
 
Quote:

Originally Posted by M0FYA Andy (Post 1129563)
I'm afraid even with the asymmetry, I just see the image of Harry Worth and his reflection in the shop window!

https://vimeo.com/39133192

PsychMan 19th Mar 2019 3:18 pm

Re: "Walking Man" for 8080 computers.
 
Excellent work, thanks for sharing

Martin Bush 19th Mar 2019 7:31 pm

Re: "Walking Man" for 8080 computers.
 
It works for me and I think it helps to look at the face. I wonder if doing that somehow tells your brain that it's a real person hence it's walking.

I like stuff like this - great work!

ekjdm14 20th Mar 2019 12:04 pm

Re: "Walking Man" for 8080 computers.
 
I think looking at the face is a big factor yes, works well for me if I look at the face first but if I just look at the body, it's Harry Worth!

Quite an achievement though on a character based system, I too would very much enjoy seeing/playing Prince of Persia in this fashion! :D (Might grab the Game Gear and have a blast at it now I'm reminded of it)

ms660 20th Mar 2019 12:55 pm

Re: "Walking Man" for 8080 computers.
 
Not Harry Worth his foot is well elevated....

Lawrence.

MrBungle 20th Mar 2019 1:37 pm

Re: "Walking Man" for 8080 computers.
 
Very cool stuff and a great implementation. Looks really good.


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