Terminal animation library for Go. Pure Go animations ready to use in your TUI applications.

Effect names and text requirements match the registry in animations/registry.go.

Standalone effects that do not require text input.

• Fire (fire): DOOM PSX-style fire
• Matrix Rain (matrix): classic digital rain
• Rain (rain): falling ASCII characters
• Fireworks (fireworks): particle-based fireworks
• Beams (beams): full-screen light beams
• Aquarium (aquarium): underwater scene with fish and sea life
• Skull (skull): skull with a Tron grid, sonar pulses, and scanline sweep
• Sonar (sonar): pulses radiating from the centre to the screen edges
• Cracktro (cracktro): demoscene animation with stars, raster bars, and wireframe
• SYSC Logo (sysc-logo): spinning 3D braille wordmark
• Cross Logo (cross-logo): spinning 3D braille Latin cross
• Logo Morph (logo-morph): rotating SYSC wordmark and cross morph
• Higgs Field (higgs-field): particle field with travelling waves and vortex motion
• AK-47 (ak-47): Lokeig's braille model with a particle swirl and reconstruction
• Australian L2A1 SAR (l2a1-sar): notcplkerry's braille model with a particle swirl and reconstruction
• Jesus Christ Statue (jesus-christ-statue): amcgi's braille model with continuous horizontal rotation (CC BY 4.0)
• Jason (jason): noe-3d.at's braille model with continuous horizontal rotation (CC BY-NC 4.0)
• Nymphe der Flora (nymphe-der-flora): noe-3d.at's braille model with continuous horizontal rotation (CC BY-NC 4.0)
• Löwe (lowe): noe-3d.at's braille model with continuous horizontal rotation (CC BY-NC 4.0)
• Sculpture of a Roman gladiator (roman-gladiator): Virtual Museums of Małopolska's braille model with continuous horizontal rotation (CC BY 4.0)
• Grabfigur (grabfigur): noe-3d.at's braille model with continuous horizontal rotation (CC BY-NC 4.0)
• Laocoon and His Sons (laocoon-and-his-sons): Rigsters' rotating braille model (CC BY 4.0)
• Napoleon Bust (napoleon-bust): Virtual Museums of Małopolska's bust dissolves into a particle field and reforms (CC BY 4.0)
• Brandenburg Gate (brandenburg-gate): Resinnnn's rotating braille model (CC BY 4.0)
• Louis XIV (louis-xiv): HoangHiepVu's rotating braille model (CC BY 4.0)
• Engel (engel): noe-3d.at's rotating braille model (CC BY-NC 4.0)
• St George (st-george): VIMUNE's rotating braille model (CC BY-SA 4.0)
• Santa Muerte (santa-muerte): Mateusz Woliński's rotating braille model (CC BY-SA 4.0)
• Aspasia (aspasia): noe-3d.at's rotating braille model (CC BY-NC 4.0)
• St Nepomuk (st-nepomuk): noe-3d.at's rotating braille model (CC BY-NC 4.0)
• Lion Statue (lion-statue): Thomas Flynn's rotating braille model (CC0 1.0)
• F-14 Tomcat (f-14-tomcat): bohmerang's braille aircraft banks, climbs and turns (CC BY-NC-SA 4.0)
• F-15E Strike Eagle (f-15e-strike-eagle): bohmerang's braille aircraft banks, climbs and turns (CC BY-NC-SA 4.0)
• F-22 Raptor (f-22-raptor): bohmerang's braille aircraft banks, climbs and turns (CC BY-NC-SA 4.0)
• F/A-18E Super Hornet (fa-18e-super-hornet): 42manako's braille aircraft banks, climbs and turns (CC BY-NC 4.0)
• Great Wave (great-wave): Hokusai's wave with animated ASCII foam and water
• Wasteland (wasteland): animated ASCII scene after Valenberg

Text effects animate ASCII input. The CLI uses SYSC.txt by default; pass -file to choose another file. Blackhole can also run in particle mode without text.

• Fire Text (fire-text): ASCII art consumed by rising flames
• Matrix Art (matrix-art): ASCII art revealed by Matrix-style streams
• Rain Art (rain-art): ASCII art revealed by falling rain
• Beam Text (beam-text): text with animated light beams
• Ring Text (ring-text): rotating coloured rings around ASCII art
• Blackhole (blackhole): text pulled into a swirling blackhole
• Pour (pour): characters fall into position from different directions
• Print (print): typewriter-style text rendering
• Decrypt (decrypt): scrambled text resolves into the supplied text
• AK-47 Text (ak-47-text): the braille model forms the selected ASCII art

Via one-line installer (fastest):

curl -fsSL https://raw.githubusercontent.com/Nomadcxx/sysc-Go/master/install.sh | sudo bash

Via interactive installer:

# Clone and run the TUI installer (requires sudo for system-wide installation).
# Installs both syscgo and syscgo-tui binaries.
# Resolve Go in the current shell, then invoke that toolchain by absolute path.
git clone https://github.com/Nomadcxx/sysc-Go.git
cd sysc-Go
sudo "$(go env GOROOT)/bin/go" run ./cmd/installer/

Via AUR (Arch Linux):

yay -S syscgo

Via Go:

go install github.com/Nomadcxx/sysc-Go/cmd/syscgo@latest
go install github.com/Nomadcxx/sysc-Go/cmd/syscgo-tui@latest

Note: The TUI binary includes the BIT fonts. go install does not install the sample text files; use the installer or AUR package for them.

go get github.com/Nomadcxx/sysc-Go

The easiest way to browse and select animations is through the interactive TUI:

syscgo-tui

Features:

• Visual selector for all animations, themes, and durations
• Built-in ASCII art editor (BIT) with live preview
• 174 block-style fonts for creating ASCII art
• Real-time animation preview
• Export ASCII art to file (Ctrl+S)
• Navigate with arrow keys or vim keybindings (h/j/k/l)
• Instant theme switching

Run any animation directly from command line:

The default duration is 10 seconds. Set -duration 0 to run until interrupted.

Animations (no text input required):

# Fire effect with Dracula theme (infinite loop)
syscgo -effect fire -theme dracula -duration 0

# Matrix rain with Nord theme for 30 seconds
syscgo -effect matrix -theme nord -duration 30

# Rain effect with Tokyo Night theme
syscgo -effect rain -theme tokyo-night

# Fireworks display
syscgo -effect fireworks -theme catppuccin -duration 20

# Beams effect (full-screen background)
syscgo -effect beams -theme nord -duration 0

# Aquarium effect (infinite)
syscgo -effect aquarium -theme dracula -duration 0

# AK-47: repeating 12-second cycle
syscgo -effect ak-47 -theme kanagawa -duration 0

# Australian L2A1 SAR: repeating 12-second cycle
syscgo -effect l2a1-sar -theme kanagawa -duration 0

# Higgs particle field: repeating 20-second cycle
syscgo -effect higgs-field -theme tokyo-night -duration 0

# Napoleon: dissolve into a particle field and reform over a 20-second cycle
syscgo -effect napoleon-bust -theme nord -duration 0

# Statue effects: continuous horizontal rotation
syscgo -effect jesus-christ-statue -theme kanagawa -duration 0
syscgo -effect jason -theme kanagawa -duration 0
syscgo -effect nymphe-der-flora -theme kanagawa -duration 0
syscgo -effect lowe -theme kanagawa -duration 0
syscgo -effect roman-gladiator -theme kanagawa -duration 0
syscgo -effect grabfigur -theme kanagawa -duration 0

# Fighter aircraft: banking, climbing and turning
syscgo -effect f-14-tomcat -theme kanagawa -duration 0
syscgo -effect f-15e-strike-eagle -theme kanagawa -duration 0
syscgo -effect f-22-raptor -theme kanagawa -duration 0
syscgo -effect fa-18e-super-hornet -theme kanagawa -duration 0

# Use selected artwork as the braille-particle target
syscgo -effect ak-47-text -file /path/to/art.txt -theme kanagawa -duration 0

Text Effects (require -file flag with text/ASCII art):

# Fire text effect with ASCII art
syscgo -effect fire-text -file logo.txt -theme rama -duration 0

# Matrix art effect
syscgo -effect matrix-art -file art.txt -theme eldritch -duration 20

# Rain art effect
syscgo -effect rain-art -file banner.txt -theme tokyo-night -duration 15

# Pour effect with text file
syscgo -effect pour -file message.txt -theme gruvbox -duration 10

# Print effect (typewriter style)
syscgo -effect print -file banner.txt -theme catppuccin -duration 15

# Beam text effect with auto-sizing and display mode
syscgo -effect beam-text -file header.txt -auto -display -theme nord -duration 5

# Ring text effect
syscgo -effect ring-text -file title.txt -theme eldritch -duration 10

# Blackhole effect with text
syscgo -effect blackhole -file text.txt -theme dark -duration 15

Available themes: dracula, gruvbox, nord, tokyo-night, catppuccin, material, solarized, monochrome, transishardjob, rama, eldritch, dark

Text Effect Flags:

• -auto - Auto-size canvas to fit text (beam-text only)
• -display - Complete once and hold at final state (beam-text only)
• -file - Path to text file for text-based effects

When using text effects with -file, syscgo searches for files in the following order:

1. Absolute path - If you provide a full path (e.g., /home/user/art.txt)
2. Current directory - Files in your working directory
3. User assets - ~/.local/share/syscgo/assets/ (where new art is saved)
4. System assets - /usr/local/share/syscgo/assets/ or /usr/share/syscgo/assets/

Where your ASCII art is saved:

When you create ASCII art using the TUI (syscgo-tui) and export it, files are saved to:

~/.local/share/syscgo/assets/

Set XDG_DATA_HOME to save under a different data root. If you already keep a ~/sysc-Go/assets/ directory from a source checkout, exports keep going there.

Example usage:

# Create art in TUI
syscgo-tui
# Use BIT editor, export as "hyprland.txt"

# Use your exported art
syscgo -effect fire-text -file hyprland.txt -theme rama -duration 0

For sysc-walls integration, art exports to ~/.config/sysc-walls/ascii/ instead.

The AK-47 Text preview leads the gallery. The remaining effects appear newest to oldest.

Show the effect gallery

Great Wave

Wasteland

Logo Morph

Cross Logo

SYSC Logo

Cracktro

Sonar

Skull

Fire Text

Blackhole

Ring Text

Rain Art

Matrix Art

Aquarium

Beams

Beam Text

Pour

Print

Fireworks

Rain

Fire

Matrix Rain

Show the TUI preview

Run an effect in a terminal. Press Ctrl+C to stop it.

syscgo -effect great-wave -theme nord -duration 0

See GUIDE.md for detailed CLI usage.

• terminaltexteffects - Inspiration for terminal visual effects
• bit - ASCII art editor and font library integration

Code: MIT. The bundled AK-47 model data is by Lokeig and retains CC BY-NC 4.0, including its noncommercial restriction. See model credits and conversion.

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