_functions_extras

#!/usr/bin/env bash
### .functions_extra - more complicated aliases for silly reasons

# countdown: start a full-screen countdown
function countdown() {
  start=${1:60}
  now=$(date +%s)
  watch -tn1 echo "$((now-$(date +%s)+start))"
}

# color show in your terminal
# source: https://twitter.com/climagic/status/817405740772184065
function display_colors {
  yes "$(seq 16 231)" | while read -r i;
  do printf "\x1b[48;5;%im\n" "${i}";
  sleep .02;
  done
}

# make it snow in your terminal
# source: http://climagic.org/coolstuff/let-it-snow.html
function display_snow {
  export LINES COLUMNS;
  clear;
  while :;
  do echo "${LINES}" "${COLUMNS}" $((RANDOM % COLUMNS));
  sleep 0.1;
  done|gawk '{a[$3]=0;for(x in a) {o=a[x];a[x]=a[x]+1;printf "\033[%s;%sH ",o,x; printf "\033[%s;%sH*\033[0;0H",a[x],x;}}'
}

# roll a die (d6 default)
function roll() {
  if [[ $# -ge 1 ]]; then
    echo $((RANDOM % $1 + 1))
  else
    echo $((RANDOM % 6 + 1))
  fi
}