116 lines
2.4 KiB
Bash
Executable File
116 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# v1: initial version
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# v2: cleanup, replaced while loops with for loops when possible
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# external tools: none
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# set to 0 to disable log function output, 1 otherwise
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debug=0
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declare -a abilities=( strength dexterity intelligence wisdom charisma constitution )
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usage() {
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echo "dnd_characters.sh generate|modifier <n>" >&2
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exit 1
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}
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# log function takes 1 argument which is echoed if $debug is > 0
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# todo: Add another argument (mask ?) to selectively log portions of code
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log () {
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(( $debug )) && echo "$*"
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}
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# simple bubble sort for numeric array (descending)
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# args: 1: the array
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# todo: add a parameter for asc/desc order.
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sort_n() {
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local -a array=( "$@" )
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local -i max=$(( ${#array[@]} - 1 ))
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for (( max= $(( ${#array[@]} - 1 )); max > 0; max-- )); do
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local -i i
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for (( i=0; i<max; i++ )); do
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local -i val1=${array[$i]}
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local -i val2=${array[$((i + 1))]}
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# switch if necessary
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if (( $val1 < $val2 )); then
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local tmp=$val1
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array[$i]=$val2
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array[$(($i + 1))]=$tmp
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fi
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done
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done
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echo "${array[@]}"
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}
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# roll $2 times a $1 faces dice
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roll() {
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local -a rolls
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local -i i
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for (( i=1; i<=$2; i++ )); do
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rolls[$i]=$((RANDOM % $1 + 1))
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done
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echo ${rolls[@]}
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}
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modifier() {
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local -i res
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local -i in=$1
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local -i out=$(( $in - 10 ))
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log modifier in "$1"
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res=$(( $out / 2 )) # will alwaid round down
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log modifier div "$res"
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# adjust for negative numbers
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(( $out < 0 )) && (( $out % 2 )) && (( res-- ))
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log modifier adjust negative "$res"
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echo $res
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}
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generate() {
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local -i s
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local -a dices
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for ability in ${abilities[@]}; do
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dices=( $(roll 6 4) )
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s=( $(sort_n ${dices[@]}) )
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sum=$(( ${s[1]} + ${s[2]} + ${s[3]} ))
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echo $ability $sum
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if [[ $ability == "constitution" ]]; then
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echo "hitpoints $(( 10 - $(modifier $sum) ))"
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fi
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done
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}
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command="$1"
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case "$command" in
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"modifier")
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(( $# != 2 )) && usage
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modifier "$2"
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;;
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"generate")
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(( $# != 1 )) && usage
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generate
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;;
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*)
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usage
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;;
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esac
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exit 0
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# Indent style for emacs
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# Local Variables:
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# sh-basic-offset: 4
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# sh-indentation: 4
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# indent-tabs-mode: nil
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# comment-column: 60
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# End:
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