Commit 0652d1682e7a67f221d93ac168a8fedfaa2eb530
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matrix script
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scripts/matrixish.sh
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| 1 | +#!/bin/bash | |
| 2 | +# | |
| 3 | +# matrix: matrix-ish display for Bash terminal | |
| 4 | +# Author: Brett Terpstra 2012 <http://brettterpstra.com> | |
| 5 | +# Contributors: Lauri Ranta and Carl <http://blog.carlsensei.com/> | |
| 6 | +# | |
| 7 | +# A morning project. Could have been better, but I'm learning when to stop. | |
| 8 | + | |
| 9 | +### Customization: | |
| 10 | +blue="\033[0;34m" | |
| 11 | +brightblue="\033[1;34m" | |
| 12 | +cyan="\033[0;36m" | |
| 13 | +brightcyan="\033[1;36m" | |
| 14 | +green="\033[0;32m" | |
| 15 | +brightgreen="\033[1;32m" | |
| 16 | +red="\033[0;31m" | |
| 17 | +brightred="\033[1;31m" | |
| 18 | +white="\033[1;37m" | |
| 19 | +black="\033[0;30m" | |
| 20 | +grey="\033[0;37m" | |
| 21 | +darkgrey="\033[1;30m" | |
| 22 | +# Choose the colors that will be used from the above list | |
| 23 | +# space-separated list | |
| 24 | +# e.g. `colors=($green $brightgreen $darkgrey $white)` | |
| 25 | +colors=($green $brightgreen) | |
| 26 | +### End customization | |
| 27 | + | |
| 28 | +### Do not edit below this line | |
| 29 | +spacing=${1:-100} # the likelihood of a character being left in place | |
| 30 | +scroll=${2:-0} # 0 for static, positive integer determines scroll speed | |
| 31 | +screenlines=$(expr `tput lines` - 1 + $scroll) | |
| 32 | +screencols=$(expr `tput cols` / 2 - 1) | |
| 33 | + | |
| 34 | +# chars=(a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9 ^) | |
| 35 | +# charset via Carl: | |
| 36 | +chars=(ｱ ｲ ｳ ｴ ｵ ｶ ｷ ｸ ｹ ｺ ｻ ｼ ｽ ｾ ｿ ﾀ ﾁ ﾂ ﾃ ﾄ ﾅ ﾆ ﾇ ﾈ ﾉ ﾊ ﾋ ﾌ ﾍ ﾎ ﾏ ﾐ ﾑ ﾒ ﾓ ﾔ ﾕ ﾖ ﾗ ﾘ ﾙ ﾚ ﾛ ﾜ ﾝ) | |
| 37 | + | |
| 38 | +count=${#chars[@]} | |
| 39 | +colorcount=${#colors[@]} | |
| 40 | + | |
| 41 | +trap "tput sgr0; clear; exit" SIGTERM SIGINT | |
| 42 | + | |
| 43 | +if [[ $1 =~ '-h' ]]; then | |
| 44 | + echo "Display a Matrix(ish) screen in the terminal" | |
| 45 | + echo "Usage: matrix [SPACING [SCROLL]]" | |
| 46 | + echo "Example: matrix 100 0" | |
| 47 | + exit 0 | |
| 48 | +fi | |
| 49 | + | |
| 50 | + | |
| 51 | +clear | |
| 52 | +tput cup 0 0 | |
| 53 | +while : | |
| 54 | + do for i in $(eval echo {1..$screenlines}) | |
| 55 | + do for i in $(eval echo {1..$screencols}) | |
| 56 | + do rand=$(($RANDOM%$spacing)) | |
| 57 | + case $rand in | |
| 58 | + 0) | |
| 59 | + printf "${colors[$RANDOM%$colorcount]}${chars[$RANDOM%$count]} " | |
| 60 | + ;; | |
| 61 | + 1) | |
| 62 | + printf " " | |
| 63 | + ;; | |
| 64 | + *) | |
| 65 | + printf "\033[2C" | |
| 66 | + ;; | |
| 67 | + esac | |
| 68 | + done | |
| 69 | + printf "\n" | |
| 70 | + | |
| 71 | + # sleep .005 | |
| 72 | + done | |
| 73 | + tput cup 0 0 | |
| 74 | + done |