How to make an grapichal adventure available for blind people?

[Ishmael]

Rui, a blind person still wouldn't take offense of it in any way if you told them there is a white house in the field, even if they wouldn't know what white is. You're clinging to insignificant detail here, as the main point is "by what method" and not "in what form", as far as I understood.

And I still say text output for a screen reader. And as for navigating, for example the page up and page down keys browsing through hotspots (no arrow keys here, as they're used to navigate within the text) and maybe enter or space opening a menu for the possible actions, etc.  Have the whole thing toggleable in the options, and maybe wipe off all other graphics than text when it's on so seeing people can't cheat with it

[Rui 'Trovatore' Pires]

Rui, a blind person still wouldn't take offense of it in any way if you told them there is a white house in the field, even if they wouldn't know what white is. You're clinging to insignificant detail here, as the main point is "by what method" and not "in what form", as far as I understood.

I never talked about offence, or if I did I never meant it, and my quoting of that example was just point out to whoever had asked that there only "unhelpful" thing in that desciprtion was the word "white". I was talking about concepts which we take for granted and would probably not work, or not satisfactorily, for someone who was born with a certain deficiency. My main point has always been, and still is, "reproducing, in a visual experience, something for people who can't see is very tricky because:". I most certainly never intended to deal with people denying the concept of "colour" just because.

[Ishmael]

..and I've tried to tell you they interpret the part of whatever's offered to them they can. The rest they ignore, and the best way to convey things so it's most interpreable to them is to deliver the information based on non-visual detail; yet visual detail doesn't hurt. Imagine it as reading a book. The blind people I know read somewhat a lot, and they don't have books written for them specifically.

And about writing a book in Braille... Braille is not a language, it's a typeface. You could write a book in braille, and for a person trained in writing it'd be about as fast as with a normal typewriter. Just a hell of a lot noisier, if writing on paper.

[Rui 'Trovatore' Pires]

..and I've tried to tell you they interpret the part of whatever's offered to them they can. The rest they ignore, and the best way to convey things so it's most interpreable to them is to deliver the information based on non-visual detail; yet visual detail doesn't hurt.

Indeed. But this thread was started with the idea of making adventure games available to blind people, and a lot of what was said showed that people were trying to make slight modifications to a visual genre in order to make it available to blind people. In other words, it's like just making the regular alphabet stick out in relief - which must not have worked, because then there was Braille. There was the necessity of making something based on the same principles (book, sheets, read left-to-right) but with re-vamped "interface" (a different alphabet more suitable for tact than vision).

And about writing a book in Braille... ETC

Whoops, sorry then, my bad for not knowing what I was talking about. Though I didn't mistake it for a language at all (nor do I think morse code is a language), I didn't think it would be such an easy process.

[Ghost]

A braille letter is simply a blank six (as on a die), and raised spots of that six then make a letter. For example, "A" is only the upper left dot raised. A braille typewriter therefore has only seven keys (six for the dot positions, one for space). It's quite easy to use; I was able to type letters after a mere week without checking my translation sheet too often.
"Braille Lines" are used frequently at the playce I work. It's a small device that can be plugged into a computer and then creates the braille signs. There's some plugin software that can transform most word processor documents. And this software also still supports the zMachine format which is used by todays WinFrotz, an interpreter that can run virtually any IF written.
To me, that's the ideal way to make blind people play adventure games. It totally lacks the graphics, of course, but I've seen it in action. It's almost intimidating.

[Ishmael]

Actually, a braille typewriter has seven keys... You forgot the line break