NEONGRID

Scope: This repository is dedicated to C-family / systems languages only — C, C++, and C#. It exists to demonstrate work outside the JavaScript/TypeScript stack. No React, no Node, no web frameworks live here.

A zero-dependency C# cyberpunk "digital rain" terminal visualizer. Pure console, raw ANSI true-color escape codes, double-buffered diff rendering at ~30 FPS.

Why it stands out

• No libraries. Just .NET'''s System.Console + hand-rolled VT100/ANSI sequences.
• Diff renderer. Only redraws cells that actually changed — smooth on big terminals.
• Alternate screen buffer. Restores your scrollback cleanly on exit.
• Live resize + hotkeys. Resize the window or hit SPACE to cycle themes mid-run.
• 24-bit color. Per-cell RGB tail fading, not the usual 16-color matrix clone.

Build & run

Requires the .NET 8 SDK.

cd neon-grid
dotnet run

Pick a theme up front:

dotnet run -- --neon    # green-cyan (default)
dotnet run -- --acid    # toxic yellow-green
dotnet run -- --blood   # magenta-red
dotnet run -- --ice     # electric blue

Controls

Key	Action
SPACE	Cycle color theme
Q/Esc	Quit
Ctrl+C	Quit

Layout

src/

Program.cs # entry point, render loop, input, resize handling

Ansi.cs # VT100/ANSI escape-code helpers (true color, cursor, alt screen)

Palette.cs # cyberpunk themes + head->tail RGB interpolation

GridRenderer.cs # falling-stream sim + double-buffered diff frame composer