Encontróeste guión de imitación de matrizescrito por Derrick.blarg le encantó el efecto que tuvo entre todos los que existen.
Durante los últimos 5 días he estado intentando reelaborar la representación del sendero para que imprima la mitad de las filas menos 1 del tamaño de la ventana de la consola. Nada de lo que he probado produce ese efecto. Además de hacer que el bucle produzca el rastro dos veces para cada columna y comenzar desde la columna central, arreglar dinámicamente las columnas intermedias para deletrear una variable de texto de cadena en el centro de la consola y finalizar los senderos cuando la variable deletrea los caracteres en el variable.
# This script creates a Matrix-style falling text effect in the terminal.
# Define strings for extra characters (Japanese Katakana) and extended ASCII characters
extra_chars="ｶｷｸｹｺｻｼｽｾｿﾀﾁﾂﾃﾄﾅﾆﾇﾈﾉﾊﾋﾌﾍﾎﾏﾐﾑﾒﾓﾔﾕﾖﾗﾘﾙﾚﾛﾜﾝ"
extended_ascii="│┤┐└┴┬├─┼┘┌≡"
# Define arrays of color codes for a fading green color effect, and a static color
fade_colors=('\033[38;2;0;255;0m' '\033[38;2;0;192;0m' '\033[38;2;0;128;0m' '\033[38;2;0;64;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;32;0m' '\033[38;2;0;16;0m' '\033[38;2;0;8;0m') # Fading green colors
static_color='\033[38;2;0;0;0m' # Static dark green color
white_bold='\033[1;37m' # White and bold for the primary character
# Get terminal dimensions
COLUMNS=$(tput cols) # Number of columns in the terminal
ROWS=$(tput lines) # Number of rows in the terminal
# Hide the cursor for a cleaner effect and clear the screen
echo -ne '\033[?25l'
clear
# Function to generate a random character from the set of extra characters and extended ASCII
random_char() {
local chars="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789${extra_chars}${extended_ascii}"
echo -n "${chars:RANDOM%${#chars}:1}"
}
# Generate a list of 1000 random characters
random_chars=""
for (( i=0; i<1000; i++ )); do
random_chars+=$(random_char) # Add a random character to the end of the string
done
# Initialize a counter for cycling through the random characters
char_counter=0 # Counter for cycling through the random characters
# Initialize arrays to keep track of the position and trail characters of each column
positions=() # Array to store the current position in each column
trail_chars=() # Array to store the trail characters in each column
for (( c=1; c<=COLUMNS; c++ )); do
positions[$c]=$((RANDOM % ROWS)) # Random starting position for each column
trail_chars[$c]="" # Start with an empty trail for each column
done
# Function to update the display with the falling text effect
update_line() {
local last_pos=0 # Track the last position to optimize cursor movement
for (( c=1; c<=COLUMNS; c++ )); do
# Randomly skip updating some columns to create a dynamic effect
if [ $((RANDOM % 4)) -ne 0 ]; then
continue
fi
local new_char=${random_chars:$char_counter:1} # Select the next character from the random string
char_counter=$(( (char_counter + 1) % 1000 )) # Update the counter, cycling back after 1000
local pos=${positions[$c]} # Current position in this column
local trail=${trail_chars[$c]} # Current trail of characters in this column
trail_chars[$c]="${new_char}${trail:0:$((ROWS - 1))}" # Update the trail by adding new character at the top
# Render the trail of characters
for (( i=0; i<${#trail}; i++ )); do
local trail_pos=$((pos - i)) # Calculate the position for each character in the trail
if [ $trail_pos -ge 0 ] && [ $trail_pos -lt $ROWS ]; then
local color=${fade_colors[i]:-$static_color} # Choose color from the fade array or static color if beyond the array
if [ $i -eq 0 ]; then
color=$white_bold # First character in the trail is white and bold
fi
if [ $last_pos -ne $trail_pos ]; then
printf "%b" "\033[${trail_pos};${c}H" # Move cursor to the right position
last_pos=$trail_pos
fi
printf "%b" "${color}${trail:$i:1}\033[0m" # Print the character with color
fi
done
positions[$c]=$((pos + 1)) # Update the position for the next cycle
if [ $pos -ge $((ROWS + ${#fade_colors[@]})) ]; then
positions[$c]=0 # Reset position if it moves off screen
trail_chars[$c]=""
fi
done
}
# Main loop for continuous execution of the update_line function
while true; do
update_line
done
# Reset terminal settings on exit (show cursor, clear screen, reset text format)
echo -ne '\033[?25h' # Show cursor
clear
tput sgr0 # Reset text format```