With all the adventure game discussions on the forum recently, got me tinkering with some really simple ASCII "graphics" stuff that could incorporated into a graphics adventure.
The ASCII art comes from https://www.asciiart.eu/, but I've modified/added some simple animation to make it more interesting.
Anyway, it amuzed me for a few hours!
Many thanks
Paul
Waves2.opl
Owl2.opl
Feet3.opl
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With all the adventure game discussions on the forum recently, got me tinkering with some really simple ASCII "graphics" stuff that could incorporated into a graphics adventure.
The ASCII art comes from https://www.asciiart.eu/, but I've modified/added some simple animation to make it more interesting.
Anyway, it amuzed me for a few hours!
Many thanks
Paul
Waves2.opl
Owl2.opl
Feet3.opl
I hope you don't mind, I have added these to the Newopl tests. Waves2 needed a tweak as I haven't done int->float autoconversion in the runtime yet.
Owl runs:
I keep thinking about the potential that your recreation will offer if you manage to include proper graphics commands in new OPL to take advantage of the full graphics display eg: LINE X1,Y1,X2,Y2, Rect, circ etc...
While UDG are helpful, the 8 x 5 dimensions and max of 8 unique UDG is pretty limiting, and the non graphical regions between the LCD matrix sections limits what's possible further.
That said, for its intended use, the original display does the job I guess. Just fantasising over what could be!!
I keep thinking about the potential that your recreation will offer if you manage to include proper graphics commands in new OPL to take advantage of the full graphics display eg: LINE X1,Y1,X2,Y2, Rect, circ etc...
While UDG are helpful, the 8 x 5 dimensions and max of 8 unique UDG is pretty limiting, and the non graphical regions between the LCD matrix sections limits what's possible further.
That said, for its intended use, the original display does the job I guess. Just fantasising over what could be!!
Many thanks
Paul
Thanks.
Graphics commands should be fairy easy. I'm doing the floating point division at the moment and that isn't quite so easy...
Yes, the code was just hacked together late one evening, and not pretty!
I think there is a lot of opportunity with ASCII art on simple displays like the Org2. I'm particularly interested in the "one line" examples (like the Wave) since these are very well suited to a very limited display. I note that the Psion doesn't have a tilde symbol (~) which a lot of the ASCII art seems to depend on, so you'd have to make an equivalent using a UDG.
It's interesting how the single line "art" relies on the different vertical height variations of the various ASCII symbols to generate shapes - clever stuff, which I guess has been honed over many years, given how fundamental ASCII characters are in the computing world!
Martin wrote: Thu Jan 02, 2025 10:02 pm
Jaap wrote somewhere that if you update a UDG in the code then it updates immediately on the screen..
Martin
Yes, I believe that the UDG command reprograms the character generator RAM so any character with that code will start using the new character immediately. The display isn't bit mapped like a computer display, it has rows of characters specified by codes. Each code maps to a bit pattern, soe of which are in RAM (the UDGs).
