RPG attributes generator
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:
- 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.
- 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
<lang c>#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;
}</lang>
- 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++
GCC 4.9.2, unoptimised. <lang cpp>#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;
}</lang>
- Output:
Sample run:
Attributes generated : [13, 13, 17, 14, 10, 16] Total: 83, Values above 15 : 2
Go
<lang go>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
}
}</lang>
- 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
<lang javascript>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`);</lang>
- 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
<lang scala>// 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
}
}</lang>
- 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
<lang perl6>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";</lang>
- Output:
(Str => 15 Int => 16 Wis => 13 Dex => 11 Con => 15 Cha => 6) Sum: 76, with 3 attributes >= 15
PHP
<lang php><?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);</lang>
Python
Python: Simple
<lang python>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)</lang>
- Output:
Sample run:
(74, [16, 10, 12, 9, 16, 11])
Python: Nested Comprehensions #1
<lang python>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)</lang>
- Output:
Sample run:
(77, [17, 8, 15, 13, 12, 12])
Python: Nested Comprehensions #2
With comprehensions for checking candidate values in the while expression. <lang python>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())
</lang>
- Output:
81 [12, 17, 9, 9, 17, 17] 75 [16, 7, 13, 12, 15, 12] 81 [15, 11, 15, 16, 10, 14]
REXX
<lang rexx>/* 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)</lang>
- 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
zkl
<lang zkl>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));</lang>
- Output:
Random numbers: 15,15,7,17,10,13 Sums to 77 with 3 >= 15