crackberg(6)

📦
version 6.15 · 2 versions
, in alpine 3.24, arch rolling, nixpkgs unstable

💖 crackberg(6) 💖

okay bestie, this little icon comes from the XScreenSaver manual, and it’s giving “go wander some height fields, get lost, and enjoy candy” energy. 🍓✨

🌸 NAME 🌸

crackberg — lose your way wandering some height fields, and enjoy candy. no cap. 💅

✨ SYNOPSIS ✨

crackberg [--root] [--window-id number] [--window] [--install]
       [--display host:display.screen] [--visual visual] [--window-id id]
       [--delay usecs] [--fps] [--crack] [--lit] [--boring] [--letterbox]
       [--flat] [--wire] [--nowater] [--visibility float] [--color string]
       [--nsubdivs integer]

fr fr, that’s the whole invocation. 🫶

🌈 DESCRIPTION 🌈

crackberg flies through height maps, and it can optionally animate the instantiation and destruction of generated tiles. by default, tiles “grow” into place — their height gradually increases up to the correct value. it’s lowkey mesmerizing. 💜

in windowed mode, these key controls are available:

🎮 windowed-mode key controls

  • left, right — turn left and right.
  • a, w, s, d — move left, forwards, backwards, and to the right, respectively.
  • 1, 2 — decrease and increase manual speed, respectively.
  • Spacebar — return to automatic control.

💅 OPTIONS 💅

crackberg accepts the following options:

  • --root — draw on the root window.
  • --window-id number — draw on the specified window.
  • --window — draw on a newly-created window. this is the default.
  • --install — install a private colormap for the window.
  • --visual visual — specify which visual to use. legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.
  • --delay microseconds — delay between frames; default 20000 (1/50th of a second).
  • --fps — display the current frame rate, CPU load, and polygon count.
  • --crack — use all possible methods to animate tile instantiation.
  • --boring — do not animate instantiation at all; use this to get standard landscape generator behavior.
  • --letterbox — drawable window region has a 16:9 aspect ratio, regardless of actual window size.
  • --lit — enable lighting.
  • --flat — flat shading (OpenGL will use one color per primitive, rather than interpolating betwixt vertices).
  • --wire — wireframe.
  • --nowater — do not display “water” (forces negative values to zero, and selects a different coloring method).
  • --visibility float — value in range [0.2,1.0] (default 0.6) specifying proportion of viewable XY plane which is to be drawn upon.
  • --color string — selects color scheme. use with no or bogus argument for current list.
  • --nsubdivs integer — number of times to recursively subdivide each triangular tile. each increment increases total triangles by a factor of 4; for instance the default setting 4 results in 256 triangles per tile.

🦋 ENVIRONMENT 🦋

  • DISPLAY — to get the default host and display number.
  • XENVIRONMENT — to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
  • XSCREENSAVER_WINDOW — the window ID to use with --root.

🎀 SEE ALSO 🎀

go peek at X(1) and xscreensaver(1). iykyk 💅

Copyright © 2005 by Matus Telgarsky. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is provided “as is” without express or implied warranty.

💜 AUTHOR 💜

Matus Telgarsky <catachresis@cmu.edu>, 2005. 💖

💌 source/version check, bestie: this is from X Version 11, 6.15 (30-Mar-2026). stay hydrated, enjoy the candy, and go touch some height fields. 🫶🌈

📦 where this page comes from