ping pong!

pingpong-sprites

( •_•)O*           a(•_• )
( •_•)O*¯          a(•_• )
( •_•)O* `         a(•_• )
( •_•)O   ·        a(•_• )
( •_•)o    .       a(•_• )
( •_•)o     ¸      a(•_• )
( •_•)o      .     a(•_• )
( •_•)o       ·    a(•_• )
( •_•)o        ´   q(•_• )
( •_•)o         ¯  q(•_• )
( •_•)o          ` Q(•_• )
( •_•)o           °Q(•_• )
( •_•)o           °Q(•_• )
( •_•)o          ` Q(•_• )
( •_•)o         ¯  Q(•_• )
( •_•)o        ´   q(•_• )
( •_•)o       ·    q(•_• )
( •_•)o      .     q(•_• )
( •_•)o     ¸      q(•_• )
( •_•)o    .       a(•_• )
( •_•)O   ·        a(•_• )
( •_•)O  `         a(•_• )
( •_•)O ¯          a(•_• )

pingpong.sh

function title() {
  local text="$*"
  echo -ne "\033]0;$text\007"
  #          ESC         BEL
  # http://tldp.org/HOWTO/Xterm-Title-4.html
}

ping_pong() {
  local __i=1
  local sprite_sheet=$(cat pingpong-sprites)
  local modulus=$(echo "$sprite_sheet" | wc -l)
  while true
  do
    title "$(echo "$sprite_sheet" | head -n $__i | tail -n 1)"
    __i=$(((($__i + 1) % 24) + 1))
    sleep 0.1
  done
}

ping_pong &