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/*
* main.c - v1.10 - 25 Nov 2001
* (c) Stevie Strickland, 1999-2001
*
* This program has been placed under the GPL. Any bugfixes or enhancements
* will be greatly appreciated :)
*
* Stevie Strickland - sstrickl@cc.gatech.edu
*/
#include "rolldice.h"
/* The version number :) */
static const int MAJOR_VERSION = 1;
static const int MINOR_VERSION = 10;
/* The long options for this program in an struct option array */
struct option long_opts[] = {{"help", 0, NULL, 'h'},
{"version", 0, NULL, 'v'},
{"random", 0, NULL, 'r'},
{"urandom", 0, NULL, 'u'},
{"separate", 0, NULL, 's'}};
/* For getopt usage */
extern int optind;
/* Stores the random number file to use */
rand_type rand_file = UNDEF;
/* Should we print out the separate results of the dice rolls or not? */
static int print_separate;
/*
* print_usage() - Prints the usage for rolldice
*
* Parameters: Value with which to exit program
* Returns: none
*/
static void print_usage(int exitval) {
fprintf(stderr, "Usage: rolldice [options] <dice string>\n");
fprintf(stderr, "For dice string format and options, ");
fprintf(stderr, "see rolldice(6).\n");
exit(exitval);
}
/*
* print_version() - Prints the version number
*
* Parameters: none
* Returns: none
*/
static void print_version() {
printf("rolldice, v%d.%d\n", MAJOR_VERSION, MINOR_VERSION);
printf("Written by Stevie Strickland (sstrickl@resnet.gatech.edu)\n");
exit(EXIT_SUCCESS);
}
/* print_rolls() - Prints the rolls, either just the totals or the
* separate rolls, also.
*
* Parameters: Dice string with which to calculate dice rolls
* Returns: None
*/
void print_rolls(int *dice_nums) {
int i, j, k, temp_int, temp_index, temp_total;
int* temp_roll;
if(dice_nums == NULL) {
fprintf(stderr, "Problems with the dice string, either malformed "
"or numbers are too large,\nso quitting!\n");
exit(EXIT_FAILURE);
}
if((temp_roll = malloc(sizeof(*temp_roll) * dice_nums[NUM_DICE])) == NULL) {
perror("rolldice");
exit(EXIT_FAILURE);
}
for(i = 0; i < dice_nums[NUM_ROLLS]; i++) {
temp_total = 0;
if(print_separate) printf("Roll #%d: (", i+1);
for(j = 0; j < dice_nums[NUM_DICE]; j++) {
temp_roll[j] = rolldie(dice_nums[NUM_SIDES]);
if(print_separate) printf("%d ", temp_roll[j]);
temp_total += temp_roll[j];
}
for(j = 0; j < dice_nums[NUM_DROP]; j++) {
temp_int = MAXSHORT;
for(k = 0; k < dice_nums[NUM_DICE]; k++)
if(temp_int > temp_roll[k]) {
temp_int = temp_roll[k];
temp_index = k;
}
if(print_separate) printf("- %d ", temp_int);
temp_total -= temp_int;
temp_roll[temp_index] = MAXSHORT;
}
if(print_separate) printf(") ");
if(dice_nums[MULTIPLIER] != 1) {
if(print_separate) printf("* %d ", dice_nums[MULTIPLIER]);
temp_total *= dice_nums[MULTIPLIER];
}
if(dice_nums[MODIFIER]) {
if(print_separate) printf("+ %d ", dice_nums[MODIFIER]);
temp_total += dice_nums[MODIFIER];
}
if(print_separate) printf("= ");
printf("%d ", temp_total);
if(print_separate) printf("\n");
}
if(!print_separate) printf("\n");
}
int main(int argc, char **argv) {
int c, index, *totals, *dice_nums;
dice_nums = NULL;
while((c = getopt_long(argc, argv, "hvrus", long_opts, NULL)) != -1) {
switch(c) {
case 'h':
print_usage(EXIT_SUCCESS); break;
case 'v':
print_version(); break;
case 'r':
if(rand_file == URANDOM) {
fprintf(stderr, "Choose either '-r' or '-u', please.\n");
return EXIT_FAILURE;
}
rand_file = RANDOM; break;
case 'u':
if(rand_file == RANDOM) {
fprintf(stderr, "Choose either '-r' or '-u', please.\n");
return EXIT_FAILURE;
}
rand_file = URANDOM; break;
case 's':
print_separate = 1; break;
}
}
init_random(rand_file);
if ( argc < 2 ) {
print_usage(EXIT_FAILURE);
}
for(index = optind; argv[index] != NULL; index++) {
dice_nums = parse_string( argv[index] );
if ( dice_nums == NULL ) {
fprintf(stderr, "%s: Failure in getting dice attributes\n", argv[0]);
return EXIT_FAILURE;
}
print_rolls(dice_nums);
free(dice_nums);
}
return EXIT_SUCCESS;
}
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