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Diffstat (limited to 'fun/pipesx.sh')
| -rw-r--r-- | fun/pipesx.sh | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/fun/pipesx.sh b/fun/pipesx.sh deleted file mode 100644 index 02ed325..0000000 --- a/fun/pipesx.sh +++ /dev/null @@ -1,159 +0,0 @@ -#!/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
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