[ -f functions.sh ] && source functions.sh

roll_dice() {
    local count=${1%[dD]*}
    local sides=${1#*[dD]}
    local i
    local total=0
    for i in $(seq $count) ; do
        total=$((total + $RANDOM % $sides + 1))
    done
    echo $total
}

rollString="${3##* }"
if ! [[ "$rollString" =~ ^[1-9][0-9]*[dD][1-9][0-9]*$ ]]; then
    msg "$2" "${1}: Usage is roll #d# where # is greater than 0."
    else
    msg "$2" "$1:: I rolled ${rollString} and got a total of $(roll_dice ${rollString})."
fi