Feu d artifice

Vu sur linux journal un fue d artifice en bash :D sympa



Pour ceux qui ont encore un mauvais navigateur la video c est par ici et penser a passer sur firefox3.5

Le code: (modifier pour le 14 juillet )

#!/bin/bash

rows=$(tput lines)
cols=$(tput cols)
colors=(red green blue purple cyan yellow brown)
lock_file=
lock_file_base=/tmp/$(basename $0 .sh)

multiple=0
if [[ "$1" ]]; then
nsingle=$1
shift
else
nsingle=10
fi
if [[ "$1" ]]; then
nmultiple=$1
shift
if [[ $nmultiple -gt 8 ]]; then nmultiple=8; fi
else
nmultiple=6
fi


function colorstr()
{
local row=$1
local col=$2
local color=$3
local v
case "$color" in
red) v=31;;
green) v=34;;
blue) v=32;;
purple) v=35;;
cyan) v=36;;
yellow) v=33;;
brown) v=33;;
white) v=37;;
*) v=;;
esac
shift 3

if [[ $multiple -ne 0 ]]; then
touch $lock_file
while [[ $(ls $lock_file_base.* 2>/dev/null | head -n 1) != $lock_file ]]
do
sleep 0.05
done
fi

tput cup $row $col
echo -n -e "\e["$v"m"
set -f
echo -n $*
set +f
if [[ $multiple -ne 0 ]]; then
rm -f $lock_file
fi
}

function center_colorstr()
{
local row=$1
local color=$2
shift 2
local s="$*"
local slen=${#s}
colorstr $row $(((cols / 2) - (slen / 2))) $color "$s"
}

function fireworks()
{
local row=$((rows - 1))
local col=$(((RANDOM % (cols / 2)) + (cols / 4)))
local height=$((RANDOM % rows - 2))
local slant
local h
local color1=${colors[$((RANDOM % ${#colors[*]}))]}
local color2=${colors[$((RANDOM % ${#colors[*]}))]}
local color3=${colors[$((RANDOM % ${#colors[*]}))]}
while [[ $color1 == $color2 || $color1 == $color3 || $color2 == $color3 ]]
do
color2=${colors[$((RANDOM % ${#colors[*]}))]}
color3=${colors[$((RANDOM % ${#colors[*]}))]}
done

case $((RANDOM % 4)) in
0) slant=-2;;
1) slant=-1;;
2) slant=1;;
3) slant=2;;
esac

if [[ $height -gt 5 ]]; then
h=$height

while [[ $h -gt 0 ]]
do
colorstr $row $col $color1 '.'
let row--
if [[ $((col + slant)) -ge $((cols - 3)) || $((col + slant)) -le 2 ]]; then break; fi
let col+=slant
let h--
sleep 0.1
done

if [[ $((col + slant)) -lt $((cols - 3)) && $((col + slant)) -gt 2 ]]; then

h=$((height / 5))

while [[ $h -gt 0 ]]
do
colorstr $row $col $color2 '.'
let row++
if [[ $((col + slant)) -ge $((cols - 3)) || $((col + slant)) -le 2 ]]; then break; fi
let col+=slant
let h--
sleep 0.1
done
fi

colorstr $((row)) $((col - 1)) $color3 '***'
colorstr $((row - 1)) $((col)) $color3 '*'
colorstr $((row + 1)) $((col)) $color3 '*'
fi
}

for i in $(seq 1 $nsingle)
do
clear
fireworks
sleep 1
done

clear

pids=
for i in $(seq 1 $nmultiple)
do
let multiple++
lock_file=$lock_file_base.$i
fireworks &
pids="$pids $!"
done

trap "kill -9 $pids 2>/dev/null" EXIT

wait $pids
sleep 3

clear
center_colorstr $((rows / 2 - 1)) red "Vous avez apprecie le Show !!!!"
center_colorstr $((rows / 2 + 1)) red "Bon 14 Juillet"
center_colorstr $((rows / 2 + 3)) red "Les amis de linux journal"
sleep 3
clear