#!/usr/bin/env bash

declare -a VIOLETS=(53 54 55 56 57 89 90 91 92 93 127 128 129)

tput civis 2>/dev/null
tput smcup 2>/dev/null
trap "tput rmcup; tput cnorm 2>/dev/null; exit 0" SIGINT

# This is an alternative to `tput`, for no good reason.
#function term_size() {
#	{ read -p $'\e[18t' -s -r -d t size; } <> /dev/tty
#     	echo ${size#*;}
#}
#function term_cols () {
#	ts=$(term_size)
#	LINES=${ts/*;}
#}
#function term_lines () {
#	ts=$(term_size)
#	COLUMNS=${ts/;*}
#}

function winch_handler() {
	# This adds processing after the terminal handles SIGWINCH.
	# First, pass the SIGWINCH back to the terminal because
	# we can't get the new size until the terminal sees SIGWINCH.
	trap - SIGWINCH
	kill -SIGWINCH $$
	# Now `tput` can query the terminal for the new size.
	COLUMNS=$(tput cols)
	LINES=$(tput lines)
	# Install the trap so this handler will function in the future.
	trap "winch_handler" SIGWINCH
}
# The winch_handler must be called once explicitly to
# initialize COLUMNS and LINES, and to install the signal trap.
winch_handler

one_random_violet_dot() {
	echo -en "\033[$((RANDOM%LINES+1));$((RANDOM%COLUMNS+1))H"
	echo -en "\033[48;5;${VIOLETS[$((RANDOM%13))]}m "
	echo -en "\033[m"
}

random_violet_dots() {
	while :; do
		one_random_violet_dot
		sleep .01
	done
}

clear
random_violet_dots

#
#     ""`...____        _.---...,""
#     \         ".    ."          /
#     |           \  /            |
#     |      _              _     |
#     |   .'"      ()        `.   |
#      \ /        /||\         \ /
#       |      )   /\   (       |
#       |     /          \      |
#        \   |            |    /
#         `--'\          /`--"
#              `-.____.-'
#
-