From b58ff155f74cbe76f51aa0074d8d2218de774613 Mon Sep 17 00:00:00 2001
From: xero <x@xero.nu>
Date: Sat, 8 Mar 2014 22:05:02 -0500
Subject: reorganize scripts, and system automation scripts for hybrid
graphics, touchpad management, and file comparison
---
code/fun/pipesx | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 159 insertions(+)
create mode 100755 code/fun/pipesx
(limited to 'code/fun/pipesx')
diff --git a/code/fun/pipesx b/code/fun/pipesx
new file mode 100755
index 0000000..02ed325
--- /dev/null
+++ b/code/fun/pipesx
@@ -0,0 +1,159 @@
+#!/bin/bash
+W=$(tput cols) H=$(tput lines)
+# maximal random value + 1
+M=32768
+
+SETS=('╱╲' '/\')
+COLORS=(31 32 33 34 35 36 37)
+
+# default values
+N=1
+T=0
+I=0.05
+P=25
+R=$((W * H / 4))
+
+HELP="Usage: $(basename $0) [OPTIONS]
+Animated pipes.sh terminal screensaver at an angle.
+
+Options:
+
+ -n [1-] number of pipes. (Default: $N)
+ -t [0-$((${#SETS[@]} - 1))] type of pipes. (Default: $T)
+ -i [float] piping interval or maze generation interval. (Default: $I)
+ -P [0-100] probability of a turning pipe or of \\ in maze generation. (Default: $P)
+ -r [LIMIT] reset after x characters, 0 if no limit. (Default: $R)
+ -R random starting point.
+ -C no color.
+ -X maze generation.
+ -h this help message.
+"
+
+while getopts "n:t:i:P:r:RCXh" arg; do
+ case $arg in
+ n)
+ ((N = OPTARG > 0 ? OPTARG : N))
+ ;;
+ t)
+ ((T = (OPTARG >= 0 && OPTARG < ${#SETS[@]}) ? OPTARG : T))
+ ;;
+ i)
+ I=$OPTARG
+ ;;
+ P)
+ ((P = (OPTARG >= 0 && OPTARG <= 100) ? OPTARG : P))
+ ;;
+ r)
+ ((R = OPTARG >= 0 ? OPTARG : R))
+ ;;
+ R)
+ RNDSTART=1
+ ;;
+ C)
+ NOCOLOR=1
+ ;;
+ X)
+ MAZE=1
+ ;;
+ h)
+ echo -e "$HELP"
+ exit 0
+ ;;
+ esac
+done
+
+do_exit() {
+ # Show cursor and echo stdin
+ echo -ne "\e[?25h"
+ stty echo
+ clear
+ exit 0
+ }
+trap do_exit INT TERM
+
+# No echo stdin and hide the cursor
+stty -echo
+echo -ne "\e[?25l"
+
+# maze geneartion
+while [[ $MAZE ]] && clear; do
+ [[ $NOCOLOR ]] || echo -ne "\e[1;${COLORS[${#COLORS[@]} * RANDOM / M]}m"
+ for ((i = 0; i < W * H; i++ )); do
+ echo -ne ${SETS[T]:100 * RANDOM / M < P:1}
+ done
+ read -t $I -n 1 && [[ $REPLY =~ q|Q ]] && do_exit
+done
+
+# initialze values
+for ((n = 0; n < N; n++)); do
+ ((X[n] = RNDSTART ? (W + 2) * RANDOM / M : W / 2))
+ ((Y[n] = RNDSTART ? (H + 2) * RANDOM / M : H / 2))
+ D[n]=$((4 * RANDOM / M))
+ C[n]=${COLORS[${#COLORS[@]} * RANDOM / M]}
+done
+
+clear
+while :; do
+ for ((n = 0; n < N; n++, CC = 0)); do
+ x=${X[n]} y=${Y[n]}
+ d=${D[n]} c=${C[n]}
+
+ # calculate new direction `d`
+ # 1 0
+ # \/ 4 directions 0 to 3
+ # /\
+ # 2 3
+ # valid directions: d: dd', d' is the new direction
+ # d
+ # 0: / 00 \ 01 03
+ # / / /\
+ # 1: / 10 \ 11 12
+ # \ \ /\
+ # 2: \/ 21 / 22 / 23
+ # / \
+ # 3: \/ 30 \ 32 \ 33
+ # / \
+ ((d = (100 * RANDOM / M) < P ? ((d + 1) + 2 * (RANDOM % 2)) % 4 : d))
+ ((e = (d + 1) % 4))
+
+ # calculate new position
+ # d' x' y'
+ # 0: x+1 y-1
+ # 1: x-1 y-1
+ # 2: x-1 y+1
+ # 3: x+1 y+1
+ ((xn = e < 2 ? x + 1 : x - 1))
+ ((yn = d < 2 ? y - 1 : y + 1))
+
+ # adjust position and change color?
+ ((d < 2 && y == 0)) && ((yn--, CC=1))
+ ((e > 1 && x == 0)) && ((xn--, CC=1))
+ ((d > 1 && y == H)) && ((yn++, CC=1))
+ ((e < 2 && x == W)) && ((xn++, CC=1))
+ ((CC)) && c=${COLORS[${#COLORS[@]} * RANDOM / M]}
+
+ # warp pipe
+ ((xn = (xn + W + 1) % (W + 1)))
+ ((yn = (yn + H + 1) % (H + 1)))
+
+ # calculate position in terminal
+ # d' xt yt
+ # 0: x' y'+1
+ # 1: x'+1 y'+1
+ # 2: x'+1 y'
+ # 3: x' y'
+ ((xt = e < 2 ? xn : xn + 1))
+ ((yt = d < 2 ? yn + 1 : yn))
+
+ echo -ne "\e[${yt};${xt}H"
+ [[ $NOCOLOR ]] || echo -ne "\e[1;${c}m"
+ echo -n "${SETS[T]:d%2:1}"
+
+ X[n]=$xn Y[n]=$yn
+ D[n]=$d C[n]=$c
+ done
+ read -t $I -n 1 && [[ $REPLY =~ q|Q ]] && do_exit
+ ((R)) && ((r += N, r >= R)) && r=0 && clear
+done
+
+do_exit
\ No newline at end of file
--
cgit v1.2.1