1. Attempting to subscript an atom
- Posted by David Roach <roachd_76 at YAHOO.COM>
Dec 05, 1999
-
Last edited Dec 06, 1999
I am curently woking on a Black Jack game as some of you know. Thanks for
all who have helped me in my endevor. I have come across a new problem.
As per the subject line. I am getting an error of "Attempting to subscript
an atom". :(
-- code with the problem
integer pick
atom dcard1,dcard2,pcard1,pcard2
pick = rand(52)
dcard1 = Deck[pick]
drawBitmap(BlackJack,dcard1,45,45)
playhand = playhand + dcard1[2]--trying to subscript an at
Any ideas on this. My lack of knowlege on computer programing and syntax
in euphoria is holding me back. What I am trying to do overall is take
the value for the card that is selected with "pick" and keep up with
the dealers hand and the players hand in a integers playhand, dealhand.
It just don't work for me. Thanks for your time.
David Roach
roachd_76 at yahoo.com
2. Re: Attempting to subscript an atom
> ---------------------- Information from the mail
header -----------------------
> Sender: Euphoria Programming for MS-DOS
<EUPHORIA at LISTSERV.MUOHIO.EDU>
> Poster: David Roach <roachd_76 at YAHOO.COM>
> Subject: Attempting to subscript an atom
> --------------------------------------------------------------------------
-----
<SNIP>
> -- code with the problem
> integer pick
> atom dcard1,dcard2,pcard1,pcard2
>
> pick = rand(52)
> dcard1 = Deck[pick]
> drawBitmap(BlackJack,dcard1,45,45)
<SNIP>
>
> David Roach
> roachd_76 at yahoo.com
>
dcard2 is an atom (a number)
dcard2 = 45 -- or some other number.
You are attempting to index into the number as if it was a sequences.
sequence s
s = {12, 45}
dcard2 = s[2] -- now dcard2 = 45
? dcard2[2] --this will fail because dcard2 is an atom, not a sequence
-- of length 2 or greater.
-- dcard2 only holds a singe value.
Lucius L. Hilley III
lhilley at cdc.net
+----------+--------------+--------------+
| Hollow | ICQ: 9638898 | AIM: LLHIII |
| Horse +--------------+--------------+
| Software | http://www.cdc.net/~lhilley |
+----------+-----------------------------+
3. Re: Attempting to subscript an atom
David,
It appears to me that the problem starts with the way you have filled in the
variable Deck. It should be a 'sequence of sequences', i.e. 52 elements,
each consisting of a bitmap as the first element and a value as the second.
You can check this by inserting 'print Deck[1]' or '? Deck[1]' after Deck
has been created.
I think Irv and/or David Cuny gave you examples how to fill the sequence
Deck.
Ad
----- Oorspronkelijk bericht -----
Van: David Roach <roachd_76 at YAHOO.COM>
Aan: <EUPHORIA at LISTSERV.MUOHIO.EDU>
Verzonden: maandag 6 december 1999 4:39
Onderwerp: Attempting to subscript an atom
> I am curently woking on a Black Jack game as some of you know. Thanks for
> all who have helped me in my endevor. I have come across a new problem.
> As per the subject line. I am getting an error of "Attempting to subscript
> an atom". :(
> -- code with the problem
> integer pick
> atom dcard1,dcard2,pcard1,pcard2
>
> pick = rand(52)
> dcard1 = Deck[pick]
> drawBitmap(BlackJack,dcard1,45,45)
> playhand = playhand + dcard1[2]--trying to subscript an at
> Any ideas on this. My lack of knowlege on computer programing and syntax
> in euphoria is holding me back. What I am trying to do overall is take
> the value for the card that is selected with "pick" and keep up with
> the dealers hand and the players hand in a integers playhand, dealhand.
> It just don't work for me. Thanks for your time.
>
>
> David Roach
> roachd_76 at yahoo.com
4. Re: Attempting to subscript an atom
On Mon, 6 Dec 1999 08:03:55 +0100, Ad Rienks <kwibus at ZONNET.NL> wrote:
>David,
I figured out what the problem was. I had Deck in a sequence of 52 cards
where Deck[1] was the handle to the bitmap for that card. Deck[2] was the
value of the card and Deck[3] was the alternate value for the aces.
when I pick a card at random instead of this:
pick = rand(52)
hBitmap = Deck[pick]
drawBitmap(BlackJack,hbitmap,x,y)
I needed this:
pick = rand(52)
hBitmap = Deck[pick][1]
drawBitmap(BlackJack,hBitmap,x,y)
That way it wasn't trying to pick the whole element of
{card's handle, value, altenate value} and it would just
pick the cards handle. The rest is just seting up the players hand
and dealers hand to see who wins. I new it was something silly. Thanks for
all your help. I should have this done pretty soon. Ahh! my first computer
program ever. What a feeling.
David Roach
roachd_76 at yahoo.com
>
>It appears to me that the problem starts with the way you have filled in
the
>variable Deck. It should be a 'sequence of sequences', i.e. 52 elements,
>each consisting of a bitmap as the first element and a value as the second.
>You can check this by inserting 'print Deck[1]' or '? Deck[1]' after Deck
>has been created.
>I think Irv and/or David Cuny gave you examples how to fill the sequence
>Deck.
>
>Ad
>
>----- Oorspronkelijk bericht -----
>Van: David Roach <roachd_76 at YAHOO.COM>
>Aan: <EUPHORIA at LISTSERV.MUOHIO.EDU>
>Verzonden: maandag 6 december 1999 4:39
>Onderwerp: Attempting to subscript an atom
>
>
5. Re: Attempting to subscript an atom
David Roach wrote:
>I needed this:
>pick = rand(52)
>hBitmap = Deck[pick][1]
>drawBitmap(BlackJack,hBitmap,x,y)
>
Actually, you can't use rand() in that manner and have a working
card program. Like most true random number generators, rand() is
allowed to repeat itself...even consecutively. In other words, 32 could
be generated twice in a row. There is another type of random number
generator that generates a random sequence without repetition. That
is a much more complex process and few mathematically random
sequences are unique in this manner and can be calculated directly
without some form of subsetting such as I used for my shuffle.
Somebody is likely to send you a nasty letter when your dealer shows
up with two aces of spades.
Everett L.(Rett) Williams
rett at gvtc.com
