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Sailing yacht animation in the terminal
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| #!/bin/bash | |
| printf "\e[?25l" | |
| printf "\e[1;1H\e[2J" | |
| trap 'printf "\e[?25h"; exit' INT TERM EXIT | |
| reverse_string() { | |
| local str="$1" | |
| local reversed="" | |
| local len=${#str} | |
| for ((i = len - 1; i >= 0; i--)); do | |
| local char="${str:$i:1}" | |
| case "$char" in | |
| "/") char="\\" ;; | |
| "\\") char="/" ;; | |
| "|") char="|" ;; | |
| "<") char=">" ;; | |
| ">") char="<" ;; | |
| esac | |
| reversed+="$char" | |
| done | |
| echo "$reversed" | |
| } | |
| draw_yacht() { | |
| local pos=$1 | |
| local direction=$2 | |
| local spaces="" | |
| local spaces2="" | |
| local output="" | |
| local terminal_width=80 | |
| for ((i = 0; i < pos; i++)); do | |
| spaces+=" " | |
| spaces2+=" " | |
| done | |
| yacht_lines=( | |
| " " | |
| " <<<| " | |
| " /| " | |
| " / | " | |
| " / |\ " | |
| " / | \ " | |
| " /____| \ " | |
| " ___|___\ " | |
| " ______|_o_o_o_\______ " | |
| " \__________________/ " | |
| ) | |
| water_lines=( | |
| "~~~~~~~~~~~~^~~~~~^~~~~~~~~^~~~~~~~~~^~~~~~~~~~~~~~" | |
| "${spaces} ^ ^^^ ^^ ^^^ " | |
| " ~~~ ~~~ ~~~ ~~~ ~~~ ~~~ ~~~ " | |
| ) | |
| fish_line=" ^^ ~-^:> ^ ^^ " | |
| for line in "${yacht_lines[@]}"; do | |
| local display_line="" | |
| if [[ "$direction" == "right" ]]; then | |
| display_line="${spaces}$(reverse_string "$line")" | |
| else | |
| display_line="${spaces}${line}" | |
| fi | |
| printf -v padded_line "%-${terminal_width}s" "$display_line" | |
| output+="${padded_line}\n" | |
| done | |
| for line in "${water_lines[@]}"; do | |
| printf -v padded_line "%-${terminal_width}s" "$line" | |
| output+="\033[34m${padded_line}\033[0m\n" | |
| done | |
| local fishline_line_f="" | |
| if [[ "$direction" == "right" ]]; then | |
| fish_line_f="${spaces2}$(reverse_string "$fish_line")" | |
| else | |
| fish_line_f="${spaces2}${fish_line}" | |
| fi | |
| printf -v padded_line "%-${terminal_width}s" "$fish_line_f" | |
| output+="\033[34m${padded_line}\033[0m\n" | |
| printf "$output" | |
| } | |
| while true; do | |
| for pos in {0..20}; do | |
| printf "\e[1;1H" | |
| draw_yacht $pos "left" | |
| sleep 0.2 | |
| done | |
| for pos in {20..0}; do | |
| printf "\e[1;1H" | |
| draw_yacht $pos "right" | |
| sleep 0.2 | |
| done | |
| done |
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