coin.fish

#!/usr/bin/fish
# 抛硬币脚本
# Author: Lucien-X
# LastModified: 2019-02-22
# LastModified: 2019-03-20 by coldnight: porting to fish shell
# Usage: save this file to ~/.config/fish/functions/coin.fish

function coin
  # Define backspace char
  set -l BACKSPACE '\b\b'
  # Loop animation for about 1s
  set -l i "0"
  while test "$i" -lt 24
    for COIN in '🌝' '🌖' '🌗' '🌘' '🌚' '🌒' '🌓' '🌔'
      echo -en "$BACKSPACE$COIN"
      sleep 0.0417; # Insure 24 fps (1/24 ≈ 0.0417)
      set i (math "$i" + 1)
    end
  end
  # Roll the dice eventually
  set -l v (expr (random) % 2)
  echo -en $BACKSPACE
  if test "$v" -eq 0
    echo -en "🌝"
  else
    echo -en "🌚"
  end
end