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sstricklsstrickl
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Initial commit of the old rolldice source to github.
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‎.gitignore

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/rolldice.o
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/main.o
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/rolldice
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/rolldice.6.gz

‎COPYING

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‎CREDITS

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John Anderson - For making me write the program in the first place, after I
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told him I needed a project to work with C, and then
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complained about there not being any good free dice rolling
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programs...
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[email protected] - For helping me see that my limits were wrong,
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and that MAXSHORT was the way ;)
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[email protected] - For looking at my code and giving me suggestions for better
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random number generation (the only suggestion taken, so far,
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is the addition of /dev/(u)random... watch this space for
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news! :)
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Adam Northern - For aiding and abetting with the above "credit", now
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changed due to a change of heart on part of the
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upstream programmer (me :)
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[email protected] - For helping with the changelog entry for v1.2 which
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is, again, changed :)

‎Changelog

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v1.11 - 01 Feb 2010
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- Only updating URLs/email addresses. No bugfixes in this revision,
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though I'll get around to soon.
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v1.10 - 25 Nov 2001
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- Forgot to add a couple of entries to the changelogs, I see. Added them
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back in.
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- Truthfully, eventually I should rewrite this code completely, as I did
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originally write it before I really knew how one should write code like
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this. Perhaps over the winter break.
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- This version fixes the problem of urandom always being opened, thanks
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to initializing the (u)random file before reading in the command line
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options. Fixed that, plus replaced my option parsing code with a use
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of getopt_long().
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v1.9 - 10 Mar 2001
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- Never checked result of parse_string for unsuccessful parses. Fixed.
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v1.8 - 17 Oct 1999
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- Segfaulted when one didn't specify how many dice to roll (should default
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to one). Fixed.
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v1.7 - 28 Mar 1999
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- Changed dice string parser code, now more to my liking :)
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- Added ability to use multiple dice strings
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v1.6 - 27 Mar 1999
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- Added ability to drop a number of lowest die rolls and made reading
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from /dev/urandom the default. In fact, there is no longer a method
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that uses the rand() function. If adding this feature back is needed,
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then just contact me and I'll work it back in.
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v1.5 - 10 Mar 1999
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- Added ability to print out each individual die roll and added the long
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version of each of the options
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v1.4 - 12 Feb 1999
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- Added ability to use "d#" type constructions and "d%" for percentages
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v1.3 - 27 Jan 1999
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- Fixed documentation, both in getting rid of childish flames and in
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correcting the dates in the changelog (and anywhere else they might
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be wrong :)
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v1.2 - 27 Jan 1999
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- added /dev/(u)random code
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v1.1 - 20 Jan 1999
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- Fixed bug involving overflowing and underflowingi because of
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too large or negative dice attributes
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v1.0 - 19 Jan 1999
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- Released rolldice

‎Makefile

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# Edited for Debian GNU/Linux
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DESTDIR =
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BIN = $(DESTDIR)/usr/games
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MAN = $(DESTDIR)/usr/share/man/man6
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CC = gcc
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OBJFILES = main.o rolldice.o
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LIBS = -lm
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INCLUDES = rolldice.h
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all: rolldice
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rolldice: $(OBJFILES)
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$(CC) $(OBJFILES) -g -o rolldice $(LIBS)
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main.o: main.c $(INCLUDES)
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$(CC) -g -c main.c
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rolldice.o: rolldice.c $(INCLUDES)
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$(CC) -g -c rolldice.c
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install: $(EXECFILES)
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install -d $(BIN) $(MAN)
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install ./rolldice $(BIN)
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strip $(BIN)/rolldice
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gzip -9 -c rolldice.6 > rolldice.6.gz
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install -m644 rolldice.6.gz $(MAN)
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clean:
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rm -f ./rolldice $(OBJFILES) rolldice.6.gz

‎README

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rolldice is just a simple program that rolls an amount of virtual dice of
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any size. Well, technically, all the attributes of the dice can't exceed
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MAXSHORT, but I think it suffices for any normal FRPG.
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rolldice is a simple program, trying to uphold the UNIX philosophy of doing
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one thing, and doing that thing well. However, this is not a claim that
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rolldice cannot be improved, only that I am satisfied with it, as of right
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now... of course, any improvements will be accepted gladly!
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1999.1.27
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I've had a request to add /dev/(u)random as random number input, and so
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I've added the capability to use the random number devices as random input.
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The -u option gives you /dev/urandom, and the -r /dev/random.
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1999.2.12
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I know I've been a little late in adding some new features, and I apologize,
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but I'm sure you understand, college and all... anyway, there are two new
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features in this version of rolldice: A default for the number of dice to
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roll (so that strings like "d6" are possible now), and the ability to use
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"d%" as a percentage roll (rolls d100). You can also use strings like
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"#d%" to roll # percentage dice at once.
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1999.3.10
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New in this release is the ability to print out each separate die roll.
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When using this feature, you get the following output:
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[sstrickl@midkemia]:~$ rolldice -s 3d6
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Roll #1: 2 4 2 = 8
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[sstrickl@midkemia]:~$ rolldice -s 2x3d6
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Roll #1: 5 2 6 = 13
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Roll #2: 1 6 2 = 9
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Easy? I thought so! :)
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1999.3.27
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I still haven't put in the option to allow multiple dice strings on the
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command line. However, I *have* added the ability to drop a number of
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lowest die rolls. This is for all those other methods of rolling characters
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under AD&D, and I'm sure other gaming systems use this sometimes ;)
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Also, /dev/urandom has been made the default random number generator, and
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the use of rand() has been dropped. If you wish this method to be added
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back to rolldice, just contact me and I'll do so.
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1999.3.28
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I made the parser code much cleaner... this won't really affect the use of
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the program, except now you can kinda shuffle sections around. They will
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still be resolved in the same order as before, however, so:
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[sstrickl@midkemia]:~$ rolldice -s 3d6-1*10
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results in:
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Roll #1: (3 5 2) * 10 - 1 = 99
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not:
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Roll #1: ((3 5 2) - 1) * 10 = 90
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It's not quite that smart, sadly.
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And also, finally, at long last, I've added the ability to use multiple dice
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strings! Woohoo! So this means that unless I find or am asked to add a new
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method to the dice string itself, this might be the last release of diceroll,
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unless I actually do rewrite it to make it neater, find a cleaner parser
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implementation, or just get bored and decide to add something else...
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2010.2.1
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Changing the URL/email at the bottom of this file, both of which are outdated
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since I left Georgia Tech.
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2012.5.4
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Cleaning up this README a bit (or destroying history, however you want to
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look at it) to get it ready for posting at Github. Maybe one day I'll come
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back to it and clean it up as much as it needs, but I'm not optimistic.

‎main.c

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/*
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* main.c - v1.11 - 01 Feb 2010
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* (c) Stevie Strickland, 1999-2010
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*
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* This program has been placed under the GPL. Any bugfixes or enhancements
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* will be greatly appreciated :)
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*
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* Stevie Strickland - [email protected]
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*/
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#include "rolldice.h"
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/* The version number :) */
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static const int MAJOR_VERSION = 1;
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static const int MINOR_VERSION = 10;
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/* The long options for this program in an struct option array */
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struct option long_opts[] = {{"help", 0, NULL, 'h'},
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{"version", 0, NULL, 'v'},
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{"random", 0, NULL, 'r'},
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{"urandom", 0, NULL, 'u'},
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{"separate", 0, NULL, 's'}};
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/* For getopt usage */
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extern int optind;
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/* Stores the random number file to use */
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rand_type rand_file = UNDEF;
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/* Should we print out the separate results of the dice rolls or not? */
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static int print_separate;
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/*
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* print_usage() - Prints the usage for rolldice
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*
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* Parameters: Value with which to exit program
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* Returns: none
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*/
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static void print_usage(int exitval) {
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fprintf(stderr, "Usage: rolldice [options] <dice string>\n");
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fprintf(stderr, "For dice string format and options, ");
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fprintf(stderr, "see rolldice(6).\n");
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exit(exitval);
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}
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/*
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* print_version() - Prints the version number
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*
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* Parameters: none
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* Returns: none
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*/
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static void print_version() {
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printf("rolldice, v%d.%d\n", MAJOR_VERSION, MINOR_VERSION);
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printf("Written by Stevie Strickland ([email protected])\n");
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exit(EXIT_SUCCESS);
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}
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/* print_rolls() - Prints the rolls, either just the totals or the
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* separate rolls, also.
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*
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* Parameters: Dice string with which to calculate dice rolls
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* Returns: None
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*/
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void print_rolls(int *dice_nums) {
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int i, j, k, temp_int, temp_index, temp_total;
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int* temp_roll;
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if(dice_nums == NULL) {
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fprintf(stderr, "Problems with the dice string, either malformed "
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"or numbers are too large,\nso quitting!\n");
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exit(EXIT_FAILURE);
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}
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if((temp_roll = malloc(sizeof(*temp_roll) * dice_nums[NUM_DICE])) == NULL) {
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perror("rolldice");
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exit(EXIT_FAILURE);
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}
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for(i = 0; i < dice_nums[NUM_ROLLS]; i++) {
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temp_total = 0;
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if(print_separate) printf("Roll #%d: (", i+1);
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for(j = 0; j < dice_nums[NUM_DICE]; j++) {
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temp_roll[j] = rolldie(dice_nums[NUM_SIDES]);
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if(print_separate) printf("%d ", temp_roll[j]);
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temp_total += temp_roll[j];
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}
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for(j = 0; j < dice_nums[NUM_DROP]; j++) {
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temp_int = MAXSHORT;
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for(k = 0; k < dice_nums[NUM_DICE]; k++)
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if(temp_int > temp_roll[k]) {
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temp_int = temp_roll[k];
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temp_index = k;
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}
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if(print_separate) printf("- %d ", temp_int);
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temp_total -= temp_int;
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temp_roll[temp_index] = MAXSHORT;
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}
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if(print_separate) printf(") ");
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if(dice_nums[MULTIPLIER] != 1) {
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if(print_separate) printf("* %d ", dice_nums[MULTIPLIER]);
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temp_total *= dice_nums[MULTIPLIER];
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}
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if(dice_nums[MODIFIER]) {
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if(print_separate) printf("+ %d ", dice_nums[MODIFIER]);
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temp_total += dice_nums[MODIFIER];
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}
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if(print_separate) printf("= ");
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printf("%d ", temp_total);
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if(print_separate) printf("\n");
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}
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if(!print_separate) printf("\n");
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}
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int main(int argc, char **argv) {
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int c, index, *totals, *dice_nums;
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dice_nums = NULL;
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while((c = getopt_long(argc, argv, "hvrus", long_opts, NULL)) != -1) {
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switch(c) {
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case 'h':
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print_usage(EXIT_SUCCESS); break;
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case 'v':
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print_version(); break;
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case 'r':
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if(rand_file == URANDOM) {
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fprintf(stderr, "Choose either '-r' or '-u', please.\n");
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return EXIT_FAILURE;
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}
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rand_file = RANDOM; break;
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case 'u':
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if(rand_file == RANDOM) {
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fprintf(stderr, "Choose either '-r' or '-u', please.\n");
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return EXIT_FAILURE;
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}
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rand_file = URANDOM; break;
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case 's':
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print_separate = 1; break;
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}
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}
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init_random(rand_file);
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if ( argc < 2 ) {
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print_usage(EXIT_FAILURE);
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}
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for(index = optind; argv[index] != NULL; index++) {
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dice_nums = parse_string( argv[index] );
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if ( dice_nums == NULL ) {
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fprintf(stderr, "%s: Failure in getting dice attributes\n", argv[0]);
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return EXIT_FAILURE;
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}
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print_rolls(dice_nums);
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free(dice_nums);
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}
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return EXIT_SUCCESS;
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}

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