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[Arwin]

Hi Shine et al,

As we discussed privately would be the best approach, I was considering converting the p-sprint c source to a lua example program. But the first problem I run into is that I can't quite see from the reference how to look at combined button presses. If I look at 'controller' after a read, is that basically the same as looking at pad.Buttons in c? Can I do binary comparisons on it?

For example, if I have this function that checks for combined button presses, how would I do this in Lua? (I bolded the most important binary comparisons)

[Dark Killer]

you could just do:

[Arwin]

[Shine]

There are no binary relational operators in the Lua language, but you can write your programs in such a way that you don't need it.

I think your system is a bit complicated, but I'll try it. Let me summarize it: Most sequences are combos of the form: "key press 1", "key release 1", "key press 2", "key release 2" (where "1" and "2" are arbitrary keys, like cross, circle, up etc.). Some special characters, like space and backspace, are only a sequence of "key press 1", "key release 1". The shift modifier is the up-key, which has to be pressed while holding the first key of a combo. For example the sequence "triangle press", "triangle release", "square press", "square release" produces a "r", but the sequence "triangle press", "up press", "up release", "triangle release", "square press", "square release" produces a "R" (the squence "triangle press", "up press", "triangle release", "up release", "square press", "square release" is valid, too, but the sequence "triangle press", "up press", "triangle release", "square press", "square release", "up release" produces nothing, until you add the sequence "square press", "square release", but this looks like unintended behaviour in your program (version 0.50a)).

Some special sequences are used for switching the group. The start group is group 1, where the above sequences are used. You can switch to group 2 with the sequence "up press", "cross press", "cross release", "up release" (there is a bug, I think: when I switch the group, the last directional key is interpreted as the first key press/release sequence of the new sequence instead of starting with an empty sequence, e.g. if I'm in group 2, the sequence "up press", "cross press", "cross release", "up release", "triangle press", "triangle release" produces a "v", which normally is produces with the sequence "up press", "up release", "triangle press", "triangle release"). In group 2 for example the sequence "right press", "right release", "square press", "square release" produces a "k" (while in group 1 the same sequence produces a "m").

Ok, how can you implement it in Lua? I think the easiest way, and to avoid unintended behaviour, would be to list all sequences and which action should be executed for it. One nice feature of Lua is, that you can use functions as values, this simplifies the code:

[Arwin]

[Arwin]

EDIT: ok, I think I should try to make a basic version of p-sprint with your example code. I.e., fill in the rest of the tree. It'll probably give me a headache, but it seems worth it. The real strength for p-sprint would be universal acceptance, after all, because then the (little) effort of memorising the keys easily pays off, and keyboard related development time is reduced for all coders and porters.

Also, if it takes much longer for people to release a text editor, I'll do my best to make something that can edit lua scripts using p-sprint.

EDIT: hmm, in p-sprint it doesn't matter for shifts or controls which button you release first, but in the lua code up it does.

I think for compatibility reasons I should probably try to stick to the original code structure more closely, if possible. If that means I have to make binary comparisons by emulating and and or functions on arrays then I guess that's what I'll have to do ... :S

But I don't quite have Lua in my system yet - this making collections of functions is a new concept to me, and although I understand it, it'll take me a while to see how it works nicely. Can I, for instance, use it directly to make an array function for the buttons?


D$mn, I really miss binary operations. :)

[Arwin]

Ok, so if I understand it correctly, this is how I could expand the tree:

[Arwin]

Shine, there is a problem with your routine, unfortunately. I finally got a charged psp again and tested it, and this causes problems:

[Shine]

[Arwin]

[Shine]