RPG Attributes Generator

From Rosetta Code
Task
RPG Attributes Generator
You are encouraged to solve this task according to the task description, using any language you may know.

You're running a tabletop RPG, and your players are creating characters.

Each character has six core attributes: strength, dexterity, constitution, intelligence, wisdom, and charisma.

One way of generating values for these attributes is to roll four, 6-sided dice (d6) and sum the three highest rolls, discarding the lowest roll.

Some players like to assign values to their attributes in the order they're rolled.

To ensure generated characters don't put players at a disadvantage, the following requirements must be satisfied:

  • The total of all character attributes must be at least 75.
  • At least two of the attributes must be at least 15.

However, this can require a lot of manual dice rolling. A programatic solution would be much faster.

Task

Write a program that:

  1. Generates 4 random, whole values between 1 and 6.
  2. Saves the sum of the 3 largest values.
  3. Generates a total of 6 values this way.
  4. Displays the total, and all 6 values once finished.

  • The order in which each value was generated must be preserved.
  • The total of all 6 values must be at least 75.
  • At least 2 of the values must be 15 or more.

C[edit]

Translation of: Go
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
int compareInts(const void *i1, const void *i2) {
int a = *((int *)i1);
int b = *((int *)i2);
return a - b;
}
 
int main() {
int i, j, nsum, vsum, vcount, values[6], numbers[4];
srand(time(NULL));
for (;;) {
vsum = 0;
for (i = 0; i < 6; ++i) {
for (j = 0; j < 4; ++j) {
numbers[j] = 1 + rand() % 6;
}
qsort(numbers, 4, sizeof(int), compareInts);
nsum = 0;
for (j = 1; j < 4; ++j) {
nsum += numbers[j];
}
values[i] = nsum;
vsum += values[i];
}
if (vsum < 75) continue;
vcount = 0;
for (j = 0; j < 6; ++j) {
if (values[j] >= 15) vcount++;
}
if (vcount < 2) continue;
printf("The 6 random numbers generated are:\n");
printf("[");
for (j = 0; j < 6; ++j) printf("%d ", values[j]);
printf("\b]\n");
printf("\nTheir sum is %d and %d of them are >= 15\n", vsum, vcount);
break;
}
return 0;
}
Output:

Sample run:

The 6 random numbers generated are:
[9 15 15 17 13 8]

Their sum is 77 and 3 of them are >= 15

C++[edit]

GCC 4.9.2, unoptimised.

#include <algorithm>
#include <ctime>
#include <iostream>
#include <cstdlib>
#include <string>
 
using namespace std;
 
int main()
{
srand(time(0));
 
unsigned int attributes_total = 0;
unsigned int count = 0;
int attributes[6] = {};
int rolls[4] = {};
 
while(attributes_total < 75 || count < 2)
{
attributes_total = 0;
count = 0;
 
for(int attrib = 0; attrib < 6; attrib++)
{
for(int roll = 0; roll < 4; roll++)
{
rolls[roll] = 1 + (rand() % 6);
}
 
sort(rolls, rolls + 4);
int roll_total = rolls[1] + rolls[2] + rolls[3];
 
attributes[attrib] = roll_total;
attributes_total += roll_total;
 
if(roll_total >= 15) count++;
}
}
 
cout << "Attributes generated : [";
cout << attributes[0] << ", ";
cout << attributes[1] << ", ";
cout << attributes[2] << ", ";
cout << attributes[3] << ", ";
cout << attributes[4] << ", ";
cout << attributes[5];
 
cout << "]\nTotal: " << attributes_total;
cout << ", Values above 15 : " << count;
 
return 0;
}
Output:

Sample run:

Attributes generated : [13, 13, 17, 14, 10, 16]
Total: 83, Values above 15 : 2

Factor[edit]

Works with: Factor version 0.98
USING: combinators.short-circuit dice formatting io kernel math
math.statistics qw sequences ;
IN: rosetta-code.rpg-attributes-generator
 
CONSTANT: stat-names qw{ Str Dex Con Int Wis Cha }
 
: attribute ( -- n )
4 [ ROLL: 1d6 ] replicate 3 <iota> kth-largests sum ;
 
: stats ( -- seq ) 6 [ attribute ] replicate ;
 
: valid-stats? ( seq -- ? )
{ [ [ 15 >= ] count 2 >= ] [ sum 75 >= ] } 1&& ;
 
: generate-valid-stats ( -- seq )
f [ dup valid-stats? ] [ drop stats ] do until ;
 
: stats-info ( seq -- )
[ sum ] [ [ 15 >= ] count ] bi
"Total: %d\n# of attributes >= 15: %d\n" printf ;
 
: main ( -- )
generate-valid-stats dup stat-names swap
[ "%s: %d\n" printf ] 2each nl stats-info ;
 
MAIN: main
Output:
Str: 9
Dex: 13
Con: 14
Int: 17
Wis: 17
Cha: 11

Total: 81
# of attributes >= 15: 2

Go[edit]

package main
 
import (
"fmt"
"math/rand"
"sort"
"time"
)
 
func main() {
s := rand.NewSource(time.Now().UnixNano())
r := rand.New(s)
for {
var values [6]int
vsum := 0
for i := range values {
var numbers [4]int
for j := range numbers {
numbers[j] = 1 + r.Intn(6)
}
sort.Ints(numbers[:])
nsum := 0
for _, n := range numbers[1:] {
nsum += n
}
values[i] = nsum
vsum += values[i]
}
if vsum < 75 {
continue
}
vcount := 0
for _, v := range values {
if v >= 15 {
vcount++
}
}
if vcount < 2 {
continue
}
fmt.Println("The 6 random numbers generated are:")
fmt.Println(values)
fmt.Println("\nTheir sum is", vsum, "and", vcount, "of them are >= 15")
break
}
}
Output:

Sample run:

The 6 random numbers generated are:
[16 15 7 14 9 15]

Their sum is 76 and 3 of them are >= 15

JavaScript[edit]

function roll() {
const stats = {
total: 0,
rolls: []
}
let count = 0;
 
for(let i=0;i<=5;i++) {
let d6s = [];
 
for(let j=0;j<=3;j++) {
d6s.push(Math.ceil(Math.random() * 6))
}
 
d6s.sort().splice(0, 1);
rollTotal = d6s.reduce((a, b) => a+b, 0);
 
stats.rolls.push(rollTotal);
stats.total += rollTotal;
}
 
return stats;
}
 
let rolledCharacter = roll();
 
while(rolledCharacter.total < 75 || rolledCharacter.rolls.filter(a => a >= 15).length < 2){
rolledCharacter = roll();
}
 
console.log(`The 6 random numbers generated are:
${rolledCharacter.rolls.join(', ')}
 
Their sum is ${rolledCharacter.total} and ${rolledCharacter.rolls.filter(a => a >= 15).length} of them are >= 15`);
Output:

Sample run:

The 6 random numbers generated are:
11, 17, 12, 12, 9, 16

Their sum is 77 and 2 of them are >= 15

Kotlin[edit]

// Version 1.2.51
 
import java.util.Random
 
fun main(args: Array<String>) {
val r = Random()
while (true) {
val values = IntArray(6)
for (i in 0..5) {
val numbers = IntArray(4) { 1 + r.nextInt(6) }
numbers.sort()
values[i] = numbers.drop(1).sum()
}
val vsum = values.sum()
val vcount = values.count { it >= 15 }
if (vsum < 75 || vcount < 2) continue
println("The 6 random numbers generated are:")
println(values.asList())
println("\nTheir sum is $vsum and $vcount of them are >= 15")
break
}
}
Output:

Sample run:

The 6 random numbers generated are:
[13, 14, 13, 15, 17, 8]

Their sum is 80 and 2 of them are >= 15

Perl 6[edit]

Works with: Rakudo Star version 2018.04.1
my ( $min_sum, $hero_attr_min, $hero_count_min ) = 75, 15, 2;
my @attr-names = <Str Int Wis Dex Con Cha>;
 
sub heroic { + @^a.grep: * >= $hero_attr_min }
 
my @attr;
repeat until @attr.sum >= $min_sum
and heroic(@attr) >= $hero_count_min {
 
@attr = @attr-names.map: { (1..6).roll(4).sort(+*).skip(1).sum };
}
 
say @attr-names Z=> @attr;
say "Sum: {@attr.sum}, with {heroic(@attr)} attributes >= $hero_attr_min";
Output:
(Str => 15 Int => 16 Wis => 13 Dex => 11 Con => 15 Cha => 6)
Sum: 76, with 3 attributes >= 15

PHP[edit]

<?php
 
$attributesTotal = 0;
$count = 0;
 
while($attributesTotal < 75 || $count < 2) {
$attributes = [];
 
foreach(range(0, 5) as $attribute) {
$rolls = [];
 
foreach(range(0, 3) as $roll) {
$rolls[] = rand(1, 6);
}
 
sort($rolls);
array_shift($rolls);
 
$total = array_sum($rolls);
 
if($total >= 15) {
$count += 1;
}
 
$attributes[] = $total;
}
 
$attributesTotal = array_sum($attributes);
}
 
print_r($attributes);

Python[edit]

Python: Simple[edit]

import random
random.seed()
attributes_total = 0
count = 0
 
while attributes_total < 75 or count < 2:
attributes = []
 
for attribute in range(0, 6):
rolls = []
 
for roll in range(0, 4):
result = random.randint(1, 6)
rolls.append(result)
 
sorted_rolls = sorted(rolls)
largest_3 = sorted_rolls[1:]
rolls_total = sum(largest_3)
 
if rolls_total >= 15:
count += 1
 
attributes.append(rolls_total)
 
attributes_total = sum(attributes)
 
print(attributes_total, attributes)
Output:

Sample run:

(74, [16, 10, 12, 9, 16, 11])

Python: Nested Comprehensions #1[edit]

import random
random.seed()
total = 0
count = 0
 
while total < 75 or count < 2:
attributes = [(sum(sorted([random.randint(1, 6) for roll in range(0, 4)])[1:])) for attribute in range(0, 6)]
 
for attribute in attributes:
if attribute >= 15:
count += 1
 
total = sum(attributes)
 
print(total, attributes)
Output:

Sample run:

(77, [17, 8, 15, 13, 12, 12])

Python: Nested Comprehensions #2[edit]

With comprehensions for checking candidate values in the while expression.

import random
 
def compute():
values = []
while (sum(values) < 75 # Total must be >= 75
or sum(1 for v in values if v >= 15) < 2): # Two must be >= 15
values = [sum(sorted(random.randint(1, 6) for _ in range(4))[1:]) for _ in range(6)]
return sum(values), values
 
for i in range(3):
print(*compute())
 
Output:
81 [12, 17, 9, 9, 17, 17]
75 [16, 7, 13, 12, 15, 12]
81 [15, 11, 15, 16, 10, 14]

REXX[edit]

version 1[edit]

/* REXX
Generates 4 random, whole values between 1 and 6.
Saves the sum of the 3 largest values.
Generates a total of 6 values this way.
Displays the total, and all 6 values once finished.
*/

Do try=1 By 1
ge15=0
sum=0
ol=''
Do i=1 To 6
rl=''
Do j=1 To 4
rl=rl (random(5)+1)
End
rl=wordsort(rl)
rsum.i=maxsum()
If rsum.i>=15 Then ge15=ge15+1
sum=sum+rsum.i
ol=ol right(rsum.i,2)
End
Say ol '->' ge15 sum
If ge15>=2 & sum>=75 Then Leave
End
Say try 'iterations'
Say ol '=>' sum
Exit
 
maxsum: procedure Expose rl
/**********************************************************************
* Comute the sum of the 3 largest values
**********************************************************************/

m=0
Do i=2 To 4
m=m+word(rl,i)
End
Return m
 
wordsort: Procedure
/**********************************************************************
* Sort the list of words supplied as argument. Return the sorted list
**********************************************************************/

Parse Arg wl
wa.=''
wa.0=0
Do While wl<>''
Parse Var wl w wl
Do i=1 To wa.0
If wa.i>w Then Leave
End
If i<=wa.0 Then Do
Do j=wa.0 To i By -1
ii=j+1
wa.ii=wa.j
End
End
wa.i=w
wa.0=wa.0+1
End
swl=''
Do i=1 To wa.0
swl=swl wa.i
End
Return strip(swl)
Output:
I:\>rexx cast
 13 13  8 15 14 11 -> 1 74
 10  9 13  7 15  9 -> 1 63
 15 15 14 13 17 14 -> 3 88
3 iterations
 15 15 14 13 17 14 => 88

version 2[edit]

This REXX version doesn't need a sort to compute the sum of the largest three (of four) values.

/*REXX program generates values for six core attributes for a  RPG  (Role Playing Game).*/
do until m>=2 & $$>=75; list= /*do rolls 'til the requirments are met*/
m=0 /*the number of values ≥ 15 (so far).*/
$$=0 /*the sum of the best 3 of 4 valsues.*/
do 6 /*generate 6 values that meet criteria.*/
$=0 /*the sum of attribute values (so far).*/
do d=1 for 4; @.d=random(1, 6) /*roll four random dice (six sided die)*/
$= $ + @.d /*also obtain their sum (of die pips).*/
end /*d*/ /* [↓] use of MIN BIF avoids sorting.*/
$= $ - min(@.1, @.2, @.3, @.4) /*obtain the sum of the highest 3 rolls*/
list= list $ /*append the above sum to a list. */
$$= $$ + $ /*add this sum to the overall sum. */
m= m + ($>=15) /*get # of rolls that meet the minimum.*/
end /*do 6*/ /* [↑] gen six core attribute values. */
end /*until*/ /*stick a fork in it, we're all done. */
/* [↓] display: list, sum, minimum.*/
say 'the total for ' list " is ──► " $$', ' m " entries are ≥ 15."
output   when using the default (internal) inputs:
the total for   14 12 15 16 14 15   is ──►  86,  3  entries are ≥ 15.

version 3[edit]

A variation of version 2

/*REXX program generates values for six core attributes for an RPG (Role Playing Game).*/
Do n=1 By 1 until m>=2 & tot>=75;
slist=''
tot=0
m=0
Do 6
sum=0
Do d=1 To 4;
cast.d=random(1,6)
sum=sum+cast.d
End
min=min(cast.1,cast.2,cast.3,cast.4)
sum=sum-min
slist=slist sum
tot=tot+sum
m=m+(sum>=15)
end
Say 'the total for' space(slist) 'is -->' tot', 'm' entries are >= 15.'
end
Say 'Solution found with' n 'iterations'
Output:
I:\>rexx rpg
the total for 12 14 14 13 12 9 is --> 74, 0 entries are >= 15.
the total for 15 11 13 14 10 10 is --> 73, 1 entries are >= 15.
the total for 18 12 12 11 16 10 is --> 79, 2 entries are >= 15.
Solution found with 3 iterations

Ring[edit]

 
# Project  : RPG Attributes Generator
 
load "stdlib.ring"
attributestotal = 0
count = 0
while attributestotal < 75 or count < 2
attributes = []
for attribute = 0 to 6
rolls = []
largest3 = []
for roll = 0 to 4
result = random(5)+1
add(rolls,result)
next
sortedrolls = sort(rolls)
sortedrolls = reverse(sortedrolls)
for n = 1 to 3
add(largest3,sortedrolls[n])
next
rollstotal = sum(largest3)
if rollstotal >= 15
count = count + 1
ok
add(attributes,rollstotal)
next
attributestotal = sum(attributes)
end
showline()
 
func sum(aList)
num = 0
for n = 1 to len(aList)
num = num + aList[n]
next
return num
 
func showline()
line = "(" + attributestotal + ", ["
for n = 1 to len(attributes)
line = line + attributes[n] + ", "
next
line = left(line,len(line)-2)
line = line + "])"
see line + nl
 

Output:

(95, [14, 11, 14, 13, 16, 11, 16])

zkl[edit]

reg attrs=List(), S,N;
do{
attrs.clear();
do(6){
abcd:=(4).pump(List,(0).random.fp(1,7)); // list of 4 [1..6] randoms
attrs.append(abcd.sum(0) - (0).min(abcd)); // sum and substract min
}
}while((S=attrs.sum(0))<75 or (N=attrs.filter('>=(15)).len())<2);
println("Random numbers: %s\nSums to %d, with %d >= 15"
.fmt(attrs.concat(","),S,N));
Output:
Random numbers: 15,15,7,17,10,13
Sums to 77 with 3 >= 15