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ui: revert mascot from pixel-art crab to simple 3-line bot #116

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Merged
emal-avala merged 1 commit into from
Apr 15, 2026
Merged

ui: revert mascot from pixel-art crab to simple 3-line bot #116

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67 changes: 20 additions & 47 deletions crates/cli/src/ui/repl.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -394,53 +394,26 @@ pub async fn run_repl(engine: &mut QueryEngine) -> anyhow::Result<()> {

println!();

// Render pixel art crab with shimmer animation.
let crab_lines = super::tui::render_crab_banner();
let info_lines = [
String::new(),
String::new(),
format!(" \x1b[1mAgent Code\x1b[0m v{}", env!("CARGO_PKG_VERSION")),
format!(" {} · session {}", model, session_id_display.as_str()),
format!(" {cwd}"),
String::new(),
String::new(),
];

for (i, crab_line) in crab_lines.iter().enumerate() {
let info = info_lines.get(i).cloned().unwrap_or_default();
if info.is_empty() {
println!("{crab_line}");
} else {
println!("{crab_line}{info}");
}
}

// Brief shimmer animation (3 frames, 120ms each).
for frame in 0..3 {
let shimmer_lines = super::tui::render_crab_shimmer(frame);
// Move cursor up to overwrite the crab.
eprint!("\x1b[{}A", shimmer_lines.len());
for (i, crab_line) in shimmer_lines.iter().enumerate() {
let info = info_lines.get(i).cloned().unwrap_or_default();
if info.is_empty() {
println!("{crab_line}");
} else {
println!("{crab_line}{info}");
}
}
std::thread::sleep(std::time::Duration::from_millis(120));
}

// Final static frame.
eprint!("\x1b[{}A", crab_lines.len());
for (i, crab_line) in crab_lines.iter().enumerate() {
let info = info_lines.get(i).cloned().unwrap_or_default();
if info.is_empty() {
println!("{crab_line}");
} else {
println!("{crab_line}{info}");
}
}
// Simple 3-line robot mascot rendered in the current theme accent color.
// Replaces the earlier pixel-art crab — see commit history for the
// rationale (we preferred the minimal look).
println!(
" {} {} v{}",
"▐▛██▜▌".with(t.accent).bold(),
"Agent Code".with(t.text).bold(),
env!("CARGO_PKG_VERSION"),
);
println!(
" {} {} · session {}",
"▝▜██▛▘".with(t.accent),
model.with(t.text).bold(),
session_id_display.as_str().with(t.muted),
);
println!(
" {} {}",
" ▘▘ ".with(t.accent),
cwd.with(t.muted),
);

println!();
println!("{}", divider.with(t.muted));
Expand Down
218 changes: 0 additions & 218 deletions crates/cli/src/ui/tui.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -643,221 +643,3 @@ fn truncate(s: &str, max: usize) -> String {
}
}

// ---- Pixel art crab banner ----

/// Render the crab mascot as pixel art using half-block characters.
/// Each cell uses ▀ with fg=top pixel, bg=bottom pixel for 2x vertical resolution.
/// Returns a Vec of pre-rendered ANSI strings (one per display line).
pub fn render_crab_banner() -> Vec<String> {
// Color palette (matching the pixel art logo).
const X: u8 = 0; // transparent (use terminal default)
const P: u8 = 1; // purple body (#A422E1)
const D: u8 = 2; // dark purple (shadow/outline)
const L: u8 = 3; // light purple (belly highlight)
const W: u8 = 4; // white (eyes)
const B: u8 = 5; // black (pupils)
const G: u8 = 6; // grey (gear)
const T: u8 = 7; // dark grey (terminal screen)
const C: u8 = 8; // cyan (terminal text)

fn palette(idx: u8) -> Option<Color> {
match idx {
0 => None, // transparent
1 => Some(Color::Rgb(164, 34, 225)), // purple #A422E1
2 => Some(Color::Rgb(100, 15, 140)), // dark purple
3 => Some(Color::Rgb(200, 140, 220)), // light purple
4 => Some(Color::White),
5 => Some(Color::Black),
6 => Some(Color::Rgb(150, 150, 160)), // gear grey
7 => Some(Color::Rgb(50, 50, 65)), // terminal dark
8 => Some(Color::Rgb(80, 220, 120)), // terminal green
_ => None,
}
}

// 18 wide x 14 tall pixel grid.
// The crab: claw holding terminal, wide body, big eyes, gear belly, legs.
#[rustfmt::skip]
let pixels: &[&[u8]] = &[
// terminal
&[X,X,X,X,X,X,T,T,T,T,T,X,X,X,X,X,X,X],
&[X,X,X,X,X,X,T,C,C,C,T,X,X,X,X,X,X,X],
&[X,X,X,X,X,X,T,T,T,T,T,X,X,X,X,X,X,X],
// claw up to terminal, body starts
&[X,X,X,D,P,P,D,X,X,X,X,X,X,X,X,X,X,X],
&[X,X,D,P,P,D,D,P,P,P,P,D,X,X,X,X,X,X],
// wide body with eyes
&[X,D,P,P,W,B,P,P,P,P,W,B,P,P,D,X,X,X],
&[X,D,P,P,W,W,P,P,P,P,W,W,P,P,D,X,X,X],
// body with gear
&[X,X,D,P,P,L,L,G,G,L,L,P,P,D,X,X,X,X],
&[X,X,D,P,L,L,G,G,G,G,L,L,P,D,X,X,X,X],
// lower body
&[X,X,X,D,P,P,L,L,L,L,P,P,D,X,X,X,X,X],
&[X,X,X,D,D,P,P,P,P,P,P,D,D,X,X,X,X,X],
// legs
&[X,X,D,P,X,D,P,X,X,P,D,X,P,D,X,X,X,X],
&[X,D,P,X,X,X,D,P,P,D,X,X,X,P,D,X,X,X],
&[D,P,X,X,X,X,X,D,D,X,X,X,X,X,P,D,X,X],
];

let height = pixels.len();
let mut lines = Vec::new();

// Process 2 rows at a time using ▀ (upper half block).
let mut row = 0;
while row < height {
let mut line = String::new();
line.push_str(" "); // left margin

let top_row = pixels[row];
let bot_row = if row + 1 < height {
pixels[row + 1]
} else {
&[0u8; 18] as &[u8]
};

for (top, bot) in top_row.iter().zip(bot_row.iter()) {
let fg = palette(*top);
let bg = palette(*bot);
render_half_block(&mut line, fg, bg);
}

lines.push(line);
row += 2;
}

lines
}

fn render_half_block(line: &mut String, fg: Option<Color>, bg: Option<Color>) {
match (fg, bg) {
(None, None) => line.push(' '),
(Some(fg_c), None) => {
line.push_str(&format!("\x1b[{}m▀\x1b[0m", rgb_fg(fg_c)));
}
(None, Some(bg_c)) => {
line.push_str(&format!("\x1b[{}m▄\x1b[0m", rgb_fg(bg_c)));
}
(Some(fg_c), Some(bg_c)) => {
line.push_str(&format!("\x1b[{};{}m▀\x1b[0m", rgb_fg(fg_c), rgb_bg(bg_c)));
}
}
}

/// Render a shimmer frame of the crab. The purple pixels shift brightness
/// in a wave pattern based on the frame number.
pub fn render_crab_shimmer(frame: usize) -> Vec<String> {
// Same pixel grid as render_crab_banner but with animated colors.
const X: u8 = 0;
const P: u8 = 1;
const D: u8 = 2;
const L: u8 = 3;
const W: u8 = 4;
const B: u8 = 5;
const G: u8 = 6;
const T: u8 = 7;
const C: u8 = 8;

fn palette_shimmer(idx: u8, col: usize, frame: usize) -> Option<Color> {
match idx {
0 => None,
1 => {
// Purple with wave shimmer.
let wave = ((col + frame * 3) % 6) as i16;
let boost = if wave < 3 { wave * 15 } else { (6 - wave) * 15 };
Some(Color::Rgb(
(164 + boost).min(255) as u8,
(34 + boost / 2).min(100) as u8,
(225 + boost / 3).min(255) as u8,
))
}
2 => Some(Color::Rgb(100, 15, 140)),
3 => {
let wave = ((col + frame * 3) % 6) as i16;
let boost = if wave < 3 { wave * 10 } else { (6 - wave) * 10 };
Some(Color::Rgb(
(200 + boost).min(255) as u8,
(140 + boost).min(200) as u8,
(220 + boost / 2).min(255) as u8,
))
}
4 => Some(Color::White),
5 => Some(Color::Black),
6 => Some(Color::Rgb(150, 150, 160)),
7 => Some(Color::Rgb(50, 50, 65)),
8 => {
// Terminal text blinks.
if frame.is_multiple_of(2) {
Some(Color::Rgb(80, 220, 120))
} else {
Some(Color::Rgb(50, 50, 65))
}
}
_ => None,
}
}

#[rustfmt::skip]
let pixels: &[&[u8]] = &[
&[X,X,X,X,X,X,T,T,T,T,T,X,X,X,X,X,X,X],
&[X,X,X,X,X,X,T,C,C,C,T,X,X,X,X,X,X,X],
&[X,X,X,X,X,X,T,T,T,T,T,X,X,X,X,X,X,X],
&[X,X,X,D,P,P,D,X,X,X,X,X,X,X,X,X,X,X],
&[X,X,D,P,P,D,D,P,P,P,P,D,X,X,X,X,X,X],
&[X,D,P,P,W,B,P,P,P,P,W,B,P,P,D,X,X,X],
&[X,D,P,P,W,W,P,P,P,P,W,W,P,P,D,X,X,X],
&[X,X,D,P,P,L,L,G,G,L,L,P,P,D,X,X,X,X],
&[X,X,D,P,L,L,G,G,G,G,L,L,P,D,X,X,X,X],
&[X,X,X,D,P,P,L,L,L,L,P,P,D,X,X,X,X,X],
&[X,X,X,D,D,P,P,P,P,P,P,D,D,X,X,X,X,X],
&[X,X,D,P,X,D,P,X,X,P,D,X,P,D,X,X,X,X],
&[X,D,P,X,X,X,D,P,P,D,X,X,X,P,D,X,X,X],
&[D,P,X,X,X,X,X,D,D,X,X,X,X,X,P,D,X,X],
];

let height = pixels.len();
let mut lines = Vec::new();

let mut row = 0;
while row < height {
let mut line = String::new();
line.push_str(" ");

let top_row = pixels[row];
let bot_row: &[u8] = if row + 1 < height {
pixels[row + 1]
} else {
&[0u8; 18]
};

for (col, (top, bot)) in top_row.iter().zip(bot_row.iter()).enumerate() {
let fg = palette_shimmer(*top, col, frame);
let bg = palette_shimmer(*bot, col, frame);
render_half_block(&mut line, fg, bg);
}

lines.push(line);
row += 2;
}

lines
}

fn rgb_fg(c: Color) -> String {
match c {
Color::Rgb(r, g, b) => format!("38;2;{r};{g};{b}"),
Color::White => "97".into(),
Color::Black => "30".into(),
_ => "39".into(),
}
}

fn rgb_bg(c: Color) -> String {
match c {
Color::Rgb(r, g, b) => format!("48;2;{r};{g};{b}"),
Color::White => "107".into(),
Color::Black => "40".into(),
_ => "49".into(),
}
}
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