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Old 20 April 2018, 10:02   #1
Brick Nash
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Typewrite text on screen (One letter at a time)

I'm looking to make some text appear on screen one by one. I have a nice arcade font sheet which I wrote a grabber procedure for and they are sitting nicely in my Icon bank.

At the moment I've got a rather clumsy bit of code which works within a loop and pastes the appropriate letter one after the other.


For T=1 to 50

If T=1 Then Paste Icon, TX,TY,13
If T=2 Then Paste Icon, TX+8,TY,27
If T=.........
If T=.........etc.

Wait 3
Next T

It's time consuming, but it works and if need be I can just use that method, but I'm wondering if there is a way to use a string to just type out what I have and then to scan the string and allocate each letter within it to a corresponding image number in the Icon bank?

I know there is graphic text, but honestly, it's skimmed over so vaguely in the manual I came away just as clueless as before I read it, and my text fonts are 8x16 not 8x8.

Anyway, any info would be great, thanks!
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Old 20 April 2018, 11:40   #2
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Asc(Mid$(s$,t,1)) will give you the ASCII code for character t in string s$. If capital A is tile 0 in your icon bank, you need to subtract 65 from that, for example.

Also, multiplying t*8 is a bit shift when compiled so that will help your position when looping.
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Old 23 April 2018, 14:10   #3
Brick Nash
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Thanks for the tip! I've not quite got what I want to do yet, but this is certainly an interesting part of the manual to read.

Would I have to set up a Mid$ code for each letter/character, or could I put all the characters in one string (EG: S$= "ABCDEFGH....etc.) and then assign some sort of variable for the returned code? Also, once the ASCII code has been returned, how would I apply that to the images within the Icon bank to be used on screen? Just a paste command with custom variables? E.G. Paste Icon, X,Y,CHAR.

I think I'm getting a good idea of what to do in theory, but it's still a little muddy.

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Old 23 April 2018, 15:18   #4
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Mid$ gives you the character at a certain position, Asc() will give you the ascii code for a character, so Asc(Mid$(S$,T,1)) will give you the ascii code for the character at position T (which could be the counter in a For…Next loop, for instance). The letter A is ascii code 65, so just put your icons in the alphabetical order and subtract the difference between 65 and the position of the letter A in your bank and you'll get the correct icon number to paste.
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Old 23 April 2018, 15:56   #5
Brick Nash
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Ok that's a little clearer, thanks!
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