Matrix characterfall on your terminal

README.md

Matrix characterfall effect

Abstract

These scripts are written to simulate the matrix characterfall on your terminal.

ASCII version

This is a version with a pure ascii charset of the matrix effect.

matrix-ascii.sh

Hiragana version

This is a version with a unicode hiragana charset of the matrix effect.

matrix-hiragana.sh

matrix-ascii.sh

#!/bin/bash
#
# revamped and adapted from CommandLineMagic on Twitter @climagic
#
# https://twitter.com/climagic/status/1472931718214651912
#
# Ascii charset
#

# ----------------------------------------------------------------------------
# globals
# ----------------------------------------------------------------------------

ROWS=$(tput lines)
COLS=$(tput cols)

# ----------------------------------------------------------------------------
# the character waterfall
# ----------------------------------------------------------------------------

while :
do
    RAND=${RANDOM}
    CHAR=$((32 + (${RAND} % 96)))
    HEXA=$(printf "%02X" "${CHAR}")
    CODE=$(printf "\x${HEXA}")
    echo "${ROWS} ${COLS} $((${RAND} % ${COLS})) ${CODE}"
    sleep 0.05
done | gawk '{a[$3]=0;for (x in a){o=a[x];a[x]=a[x]+1;printf "\033[%s;%sH\033[2;32m%s",o,x,$4;printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,$4;if (a[x] >= $1){a[x]=0;} }}'

# ----------------------------------------------------------------------------
# End-Of-File
# ----------------------------------------------------------------------------

matrix-hiragana.sh

#!/bin/bash
#
# revamped and adapted from CommandLineMagic on Twitter @climagic
#
# https://twitter.com/climagic/status/1472931718214651912
#
# Hiragana charset, thanks to Benjamin Bellamy
#

# ----------------------------------------------------------------------------
# globals
# ----------------------------------------------------------------------------

ROWS=$(tput lines)
COLS=$(tput cols)

# ----------------------------------------------------------------------------
# the character waterfall
# ----------------------------------------------------------------------------

while :
do
    RAND=${RANDOM}
    CHAR=$((12449 + (${RAND} % 89)))
    HEXA=$(printf "%02X" "${CHAR}")
    CODE=$(printf "\u${HEXA}")
    echo "${ROWS} ${COLS} $((${RAND} % ${COLS})) ${CODE}"
    sleep 0.05
done | gawk '{a[$3]=0;for (x in a){o=a[x];a[x]=a[x]+1;printf "\033[%s;%sH\033[2;32m%s",o,x,$4;printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,$4;if (a[x] >= $1){a[x]=0;} }}'

# ----------------------------------------------------------------------------
# End-Of-File
# ----------------------------------------------------------------------------

@benjaminbellamy updated ! Thanks for your contribution :)