| 1 | #!/bin/bash |
| 2 | |
| 3 | LINES=$(tput lines) |
| 4 | COLUMNS=$(tput cols) |
| 5 | |
| 6 | declare -A snowflakes |
| 7 | declare -A lastflakes |
| 8 | |
| 9 | clear |
| 10 | |
| 11 | function move_flake() { |
| 12 | i="$1" |
| 13 | |
| 14 | if [ "${snowflakes[$i]}" = "" ] || [ "${snowflakes[$i]}" = "$LINES" ]; then |
| 15 | snowflakes[$i]=0 |
| 16 | else |
| 17 | if [ "${lastflakes[$i]}" != "" ]; then |
| 18 | printf "\033[%s;%sH \033[1;1H " ${lastflakes[$i]} $i |
| 19 | fi |
| 20 | fi |
| 21 | |
| 22 | printf "\033[%s;%sH\u274$[($RANDOM%6)+3]\033[1;1H" ${snowflakes[$i]} $i |
| 23 | |
| 24 | lastflakes[$i]=${snowflakes[$i]} |
| 25 | snowflakes[$i]=$((${snowflakes[$i]}+1)) |
| 26 | } |
| 27 | |
| 28 | while : |
| 29 | do |
| 30 | i=$(($RANDOM % $COLUMNS)) |
| 31 | |
| 32 | move_flake $i |
| 33 | |
| 34 | for x in "${!lastflakes[@]}" |
| 35 | do |
| 36 | move_flake "$x" |
| 37 | done |
| 38 | |
| 39 | sleep 0.1 |
| 40 | done |