From: Mart van de Wege <mvdwege@mail.com>
Subject: Random number generation
Date: Thu, 30 Dec 2010 11:43:40 +0100
Date: 2010-12-30T11:43:40+01:00 [thread overview]
Message-ID: <864o9vbkwz.fsf@gareth.avalon.lan> (raw)
Beginner's question: I'm trying to implement a function that rolls a
number of dice and then adds a modifier. Somehow, it produces the same
number every time. I can't see where I'm going wrong.
Here's the proof of concept code:
with Ada.Numerics.Discrete_Random,Ada.Integer_Text_IO;
use Ada.Integer_Text_IO;
procedure Rolltest is
function Roll ( Number : in Positive;
Size : in Positive;
Modifier : in Integer := 0 ) return Integer is
subtype Die_Size is Positive range 2..Size;
package Die is new Ada.Numerics.Discrete_Random( Die_Size );
G : Die.Generator;
Result : Integer;
Temp : Integer;
begin
Die.Reset(G);
Result := 0;
for I in 1..Number loop
Temp := Die.Random(G);
Result := Result + Temp;
end loop;
Result := Result + Modifier;
return Result;
end Roll;
begin
for I in 1..10 loop
Put(Roll( Number => 3, Size => 6 ));
end loop;
end Rolltest;
Anyone care to at least point me to some documentation that explains
what I'm doing wrong?
Mart
--
"We will need a longer wall when the revolution comes."
--- AJS, quoting an uncertain source.
next reply other threads:[~2010-12-30 10:43 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-30 10:43 Mart van de Wege [this message]
2010-12-30 10:54 ` Random number generation Thomas Løcke
2010-12-30 12:11 ` Mart van de Wege
2010-12-30 11:34 ` Niklas Holsti
2010-12-30 11:53 ` Georg Bauhaus
2010-12-30 12:25 ` Mart van de Wege
2010-12-30 15:29 ` Georg Bauhaus
2010-12-30 15:37 ` Mart van de Wege
2010-12-30 11:51 ` Brian Drummond
2010-12-30 12:16 ` Mart van de Wege
2010-12-30 13:04 ` Dmitry A. Kazakov
2010-12-30 13:22 ` Niklas Holsti
2010-12-30 13:39 ` Dmitry A. Kazakov
2010-12-30 13:30 ` Mart van de Wege
2010-12-31 3:14 ` Gene
-- strict thread matches above, loose matches on Subject: below --
2010-07-13 12:45 tonyg
2010-07-13 12:50 ` Jacob Sparre Andersen
2010-07-13 12:58 ` Dmitry A. Kazakov
2010-07-13 13:17 ` Thomas Løcke
2010-07-13 16:07 ` Jeffrey R. Carter
2010-07-13 20:33 ` John B. Matthews
2010-07-13 23:02 ` Jeffrey R. Carter
2010-07-14 4:42 ` John B. Matthews
2010-07-15 19:01 ` tonyg
2003-09-26 7:14 random " christoph.grein
2003-09-26 7:00 Andrew
2003-09-26 7:35 ` tmoran
2003-09-26 17:58 ` Andrew
2003-09-26 19:25 ` Andrew
2003-09-26 19:35 ` chris
2003-09-26 21:44 ` tmoran
2003-09-27 1:40 ` Robert I. Eachus
2003-09-27 4:48 ` Andrew
1997-12-19 0:00 Mok-kong Shen
1998-01-02 0:00 ` Mok-kong Shen
1998-01-02 0:00 ` Robert Dewar
1996-10-13 0:00 Random Number Generation parker
1996-10-13 0:00 ` Robert Dewar
1996-10-14 0:00 ` Robert A Duff
1996-10-10 0:00 Dr J Parker
1996-10-10 0:00 Dr J Parker
1996-10-12 0:00 ` Keith Thompson
1996-10-12 0:00 ` Geert Bosch
1996-10-02 0:00 Dr J Parker
1996-10-03 0:00 ` Mats Weber
1996-10-07 0:00 ` Geert Bosch
1996-09-23 0:00 Nigel J. Tracey
1996-09-23 0:00 ` Tucker Taft
1996-10-02 0:00 ` Robert I. Eachus
1996-10-02 0:00 ` Nigel J. Tracey
1996-10-03 0:00 ` Nigel J. Tracey
1996-09-25 0:00 ` James_Rogers
1996-09-26 0:00 ` Dale Stanbrough
1996-10-01 0:00 ` Robert I. Eachus
1996-09-30 0:00 ` Dr J Parker
1996-10-01 0:00 ` Tucker Taft
1996-10-01 0:00 ` Keith Thompson
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