Added color options to The Matrix Screensaver.
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@@ -4,106 +4,180 @@
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# Author: Justin Oros
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# Source: https://github.com/JustinOros
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#!/usr/bin/env python3
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import curses
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import random
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import time
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import argparse
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import sys
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# Main function that runs the Matrix screensaver
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def matrix_rain(stdscr, color_pair):
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# Hide the cursor
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curses.curs_set(0)
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# Start color support and use default colors
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curses.start_color()
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curses.use_default_colors()
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# Available colors (excluding black and white for regular text)
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COLOR_NAMES = ['red', 'green', 'yellow', 'blue', 'purple', 'cyan']
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COLOR_OPTIONS = COLOR_NAMES + ['rgb'] # 'rgb' cycles through colors every 5 seconds
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# Initialize color pair for the text (foreground) color
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curses.init_pair(1, color_pair, -1) # Text color, background color (default black)
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# String of characters to simulate the "Matrix" rain effect
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chars = (
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890@#$%^&*()[]{}|;:,.<>?/~!_`'\"\\±§€£¥∑πΩΔ∫ƒ"
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"αβγδεζηθικλμνξοπρστυφχψω«»≠∞≡∧∨⊕∈∩∪≈αβγπ"
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"ϲπΔΘΩ≺⊂⊆≿⊤⊥⊢∝⇔⇒⇑⇓↔↕⊗⊙⊢⊣"
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"αβγδεζηθικλμνξοπρστυφχψω«»≠∞≡∧∨⊕∈∩∪≈αβγπ"
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"ϲπΔΘΩ≺⊂⊆≿⊤⊥⊢∝⇔⇒⇑⇓↔↕⊗⊙⊢⊣"
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)
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# List to store the current position of each falling character column
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columns = []
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# Infinite loop to keep the screensaver running
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while True:
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# Get the current screen size (height and width)
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sh, sw = stdscr.getmaxyx()
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# If the terminal size changes, update the columns list
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if len(columns) != sw:
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columns = [random.randint(0, sh - 1) for _ in range(sw)]
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# Clear the screen before drawing the next frame
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stdscr.erase()
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# Loop over each column in the terminal window
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for i in range(sw):
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# Create a string of 30 random characters for the falling text
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char_string = ''.join(random.choice(chars) for _ in range(30))
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x = i # X position for the current column
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y = columns[i] # Y position for the current column
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# Loop through each character in the string and apply fade effect
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for j in range(0, 30): # Limit to 30 layers of fade
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fade_y = (y - j) % sh # Loop the y position within screen bounds
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if fade_y < 0: continue # Skip if outside the screen
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# Brightness effect: top characters are bright, others fade out
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brightness = max(0, 30 - j)
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smooth_brightness = int(30 * (1 - (j / 30))) # Linear fade
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# Only draw characters that are within the screen bounds
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if 0 <= fade_y < sh and 0 <= x < sw:
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try:
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# Add the character at position (fade_y, x) with a fade effect
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stdscr.addstr(fade_y, x, char_string[j], curses.color_pair(1) | curses.A_DIM * smooth_brightness)
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except curses.error:
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pass # If the drawing position is out of bounds, just skip it
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# Update the position for the next frame (loop back to the top after reaching the bottom)
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columns[i] = (columns[i] + 1) % sh
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# Refresh the screen to show the changes
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stdscr.refresh()
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# Control the frame rate (how fast the text falls)
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time.sleep(0.05)
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# Map color name to curses color code
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def get_color_pair(color_name):
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color_map = {
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# Mapping from color names to curses color constants
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COLOR_MAP = {
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'black': curses.COLOR_BLACK,
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'red': curses.COLOR_RED,
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'green': curses.COLOR_GREEN,
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'yellow': curses.COLOR_YELLOW,
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'blue': curses.COLOR_BLUE,
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'purple': curses.COLOR_MAGENTA, # Map "purple" to magenta
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'purple': curses.COLOR_MAGENTA,
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'cyan': curses.COLOR_CYAN,
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'white': curses.COLOR_WHITE,
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}
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}
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# Return the mapped color, default to green if invalid
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return color_map.get(color_name.lower(), curses.COLOR_GREEN)
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def matrix_rain(stdscr, color_mode, timeout=None):
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# Initialize curses settings
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curses.curs_set(0) # Hide the cursor
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curses.start_color() # Enable color functionality
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curses.use_default_colors() # Use default terminal background
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# Initialize color pairs for each available color
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for i, name in enumerate(COLOR_NAMES):
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curses.init_pair(i + 1, COLOR_MAP[name], -1) # Foreground color, default background
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# Initialize variables for color cycling (for 'rgb' mode)
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color_index = 0
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current_color = COLOR_NAMES[color_index]
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next_color = current_color
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last_color_change = time.time()
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# Characters used in the Matrix rain effect (mix of ascii and Greek symbols)
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chars = (
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
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"@#$%^&*()[]{}|;:,.<>?/~!_`'\"\\"
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"αβγδεζηθικλμνξοπρστυφχψω∑πΩΔ∫ƒ∞≡∧∨⊕⊗⊙"
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)
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# Signature string that appears as an easter egg every 30 seconds
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signature = "Justin Oros"
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signature_columns = {} # Tracks column and starting Y-position of signature
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signature_visible = False
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signature_visible_until = 0
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last_signature_time = time.time()
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start_time = time.time()
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columns = [] # Y positions of falling characters for each column
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column_speeds = [] # Speed at which each column falls (some variation)
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column_colors = [] # Color of each column (for 'rgb' cycling)
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try:
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while True:
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now = time.time()
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if timeout and (now - start_time) > timeout:
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break # Exit if timeout reached
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sh, sw = stdscr.getmaxyx() # Get screen height and width
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# Initialize columns if screen width changes
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if len(columns) != sw:
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columns = [random.randint(0, sh - 1) for _ in range(sw)]
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column_speeds = [random.choice([1, 1, 2]) for _ in range(sw)] # Mostly speed 1, sometimes 2
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column_colors = [current_color] * sw
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# Handle color cycling for 'rgb' mode every 5 seconds
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if color_mode == 'rgb' and (now - last_color_change >= 5):
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color_index = (color_index + 1) % len(COLOR_NAMES)
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next_color = COLOR_NAMES[color_index]
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last_color_change = now
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# Gradually switch column colors in 'rgb' mode with some randomness
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if color_mode == 'rgb':
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for i in range(sw):
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if column_colors[i] != next_color and random.random() < 0.03:
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column_colors[i] = next_color
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elif color_mode in COLOR_NAMES:
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column_colors = [color_mode] * sw
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# Show signature every 30 seconds for 5 seconds
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if not signature_visible and (now - last_signature_time >= 30):
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signature_columns.clear()
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col = random.randint(0, sw - len(signature)) # Random horizontal position
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y_start = random.randint(5, max(6, sh - len(signature))) # Random vertical position within bounds
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signature_columns[col] = y_start
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signature_visible = True
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signature_visible_until = now + 5 # Display duration of 5 seconds
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last_signature_time = now
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# Hide signature after display time ends
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if signature_visible and now > signature_visible_until:
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signature_visible = False
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signature_columns.clear()
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stdscr.erase() # Clear screen before drawing new frame
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for i in range(sw):
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x = i
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y = columns[i]
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speed = column_speeds[i]
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color_name = column_colors[i]
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color_id = COLOR_NAMES.index(color_name) + 1
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# Draw signature if visible in this column
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if signature_visible and i in signature_columns:
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y_start = signature_columns[i]
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for j, ch in enumerate(signature):
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pos_y = (y_start + j) % sh
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try:
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attr = curses.color_pair(color_id) | curses.A_BOLD
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stdscr.addstr(pos_y, i, ch, attr)
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except curses.error:
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pass
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else:
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# Draw normal falling characters with fade effect
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char_string = ''.join(random.choice(chars) for _ in range(30))
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for j in range(30):
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fade_y = (y - j) % sh
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if 0 <= fade_y < sh:
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try:
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if j == 0:
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attr = curses.color_pair(color_id) | curses.A_BOLD
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elif j < 10:
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attr = curses.color_pair(color_id)
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else:
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attr = curses.color_pair(color_id) | curses.A_DIM
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stdscr.addstr(fade_y, x, char_string[j], attr)
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except curses.error:
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pass
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columns[i] = (columns[i] + speed) % sh # Move column down for next frame
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stdscr.refresh() # Update screen with changes
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time.sleep(0.05) # Frame rate control (~20 FPS)
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except KeyboardInterrupt:
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pass # Graceful exit on Ctrl+C
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# Command-line argument parsing and running the screensaver
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def main():
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# Create a parser for command-line arguments
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parser = argparse.ArgumentParser(description="Matrix Screensaver")
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# Add an argument for choosing the color of the falling text
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parser.add_argument('-color', type=str, default='green', help="Choose the color of the falling text")
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parser = argparse.ArgumentParser(
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description="Matrix Screensaver - Simulate falling code in the terminal",
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formatter_class=argparse.RawTextHelpFormatter
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)
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parser.add_argument('-c', '--color', type=str, default='green',
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help="Set the falling text color (use -l to list options)")
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parser.add_argument('-t', '--timeout', type=int, default=None,
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help="Exit after N seconds (optional)")
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parser.add_argument('-l', '--list-colors', action='store_true',
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help="List available color options and exit")
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args = parser.parse_args()
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# Initialize curses and pass the chosen color to the screensaver function
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curses.wrapper(lambda stdscr: matrix_rain(stdscr, get_color_pair(args.color)))
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if args.list_colors:
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print("Available colors:")
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for color in COLOR_OPTIONS:
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print(f" - {color}")
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sys.exit(0)
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chosen_color = args.color.lower()
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if chosen_color not in COLOR_OPTIONS:
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print(f"Error: Invalid color '{chosen_color}'. Use -l to list available options.")
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sys.exit(1)
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curses.wrapper(lambda stdscr: matrix_rain(stdscr, chosen_color, args.timeout))
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# Run the script if executed directly
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if __name__ == "__main__":
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main()
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