commit 79e006a5a716b72401df46e9c664928ec979d2c6
Author: minerva-jupiter <ryouturn@gmail.com>
Date: Fri, 29 May 2026 11:40:41 +0000
"feat: Initial implementation of Sudoku TUI game"
success to copy to clip
Diffstat:
| A | .gitignore | | | 1 | + |
| A | Cargo.lock | | | 1818 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | Cargo.toml | | | 9 | +++++++++ |
| A | src/board.rs | | | 167 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | src/main.rs | | | 221 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
5 files changed, 2216 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
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+name = "wit-component"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
+dependencies = [
+ "anyhow",
+ "bitflags 2.11.1",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.244.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/Cargo.toml b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "sudoku-rs"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+crossterm = "0.29.0"
+rand = "0.10.1"
+ratatui = "0.30.0"
diff --git a/src/board.rs b/src/board.rs
@@ -0,0 +1,167 @@
+use rand::RngExt;
+
+pub const GRID_SIZE: usize = 9;
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct Cell {
+ pub value: Option<u8>,
+ pub is_fixed: bool,
+}
+
+impl Cell {
+ pub fn new(value: Option<u8>, is_fixed: bool) -> Self {
+ Self { value, is_fixed }
+ }
+}
+
+pub struct Board {
+ pub cells: [[Cell; GRID_SIZE]; GRID_SIZE],
+}
+
+impl Board {
+ pub fn new() -> Self {
+ let cells = [[Cell::new(None, false); GRID_SIZE]; GRID_SIZE];
+ Self { cells }
+ }
+
+ pub fn set_value(&mut self, row: usize, col: usize, value: Option<u8>) {
+ if !self.cells[row][col].is_fixed {
+ self.cells[row][col].value = value;
+ }
+ }
+
+ pub fn is_valid(&self, row: usize, col: usize, val: u8) -> bool {
+ // Check row
+ for c in 0..GRID_SIZE {
+ if c != col && self.cells[row][c].value == Some(val) {
+ return false;
+ }
+ }
+
+ // Check column
+ for r in 0..GRID_SIZE {
+ if r != row && self.cells[r][col].value == Some(val) {
+ return false;
+ }
+ }
+
+ // Check 3x3 box
+ let start_row = (row / 3) * 3;
+ let start_col = (col / 3) * 3;
+ for r in start_row..start_row + 3 {
+ for c in start_col..start_col + 3 {
+ if (r != row || c != col) && self.cells[r][c].value == Some(val) {
+ return false;
+ }
+ }
+ }
+
+ true
+ }
+
+ pub fn is_conflict(&self, row: usize, col: usize) -> bool {
+ if let Some(val) = self.cells[row][col].value {
+ !self.is_valid(row, col, val)
+ } else {
+ false
+ }
+ }
+
+ pub fn is_full(&self) -> bool {
+ self.cells
+ .iter()
+ .all(|row| row.iter().all(|c| c.value.is_some()))
+ }
+
+ pub fn is_solved(&self) -> bool {
+ if !self.is_full() {
+ return false;
+ }
+ for r in 0..GRID_SIZE {
+ for c in 0..GRID_SIZE {
+ if self.is_conflict(r, c) {
+ return false;
+ }
+ }
+ }
+ true
+ }
+
+ pub fn solve(&mut self) -> bool {
+ let mut empty_cell = None;
+ for r in 0..GRID_SIZE {
+ for c in 0..GRID_SIZE {
+ if self.cells[r][c].value.is_none() {
+ empty_cell = Some((r, c));
+ break;
+ }
+ }
+ if empty_cell.is_some() {
+ break;
+ }
+ }
+
+ let (r, c) = match empty_cell {
+ Some(pos) => pos,
+ None => return true, // Solved
+ };
+
+ for val in 1..=9 {
+ if self.is_valid(r, c, val) {
+ self.cells[r][c].value = Some(val);
+ if self.solve() {
+ return true;
+ }
+ self.cells[r][c].value = None;
+ }
+ }
+
+ false
+ }
+
+ pub fn generate(&mut self) {
+ // Clear board
+ *self = Board::new();
+
+ // Fill diagonal 3x3 boxes
+ for i in (0..GRID_SIZE).step_by(3) {
+ self.fill_box(i, i);
+ }
+
+ // Solve the rest
+ self.solve();
+
+ // Set all as fixed for now (as the base)
+ for r in 0..GRID_SIZE {
+ for c in 0..GRID_SIZE {
+ self.cells[r][c].is_fixed = true;
+ }
+ }
+
+ // Randomly remove cells
+ let mut rng = rand::rng();
+ let cells_to_remove = 40;
+ let mut count = 0;
+ while count < cells_to_remove {
+ let r = rng.random_range(0..GRID_SIZE);
+ let c = rng.random_range(0..GRID_SIZE);
+ if self.cells[r][c].value.is_some() {
+ self.cells[r][c].value = None;
+ self.cells[r][c].is_fixed = false;
+ count += 1;
+ }
+ }
+ }
+
+ fn fill_box(&mut self, row: usize, col: usize) {
+ use rand::seq::SliceRandom;
+ let mut nums: Vec<u8> = (1..=9).collect();
+ let mut rng = rand::rng();
+ nums.shuffle(&mut rng);
+ for r in 0..3 {
+ for c in 0..3 {
+ self.cells[row + r][col + c].value = Some(nums[r * 3 + c]);
+ }
+ }
+ }
+}
diff --git a/src/main.rs b/src/main.rs
@@ -0,0 +1,221 @@
+mod board;
+
+use board::{Board, GRID_SIZE};
+use crossterm::{
+ event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode},
+ execute,
+ terminal::{EnterAlternateScreen, LeaveAlternateScreen, disable_raw_mode, enable_raw_mode},
+};
+use ratatui::{
+ Frame, Terminal,
+ backend::{Backend, CrosstermBackend},
+ layout::{Constraint, Direction, Layout, Rect},
+ style::{Color, Modifier, Style},
+ text::{Line, Span},
+ widgets::{Block, Borders, Paragraph},
+};
+use std::io;
+
+struct App {
+ board: Board,
+ cursor: (usize, usize), // (row, col)
+}
+
+impl App {
+ fn new() -> Self {
+ let mut board = Board::new();
+ board.generate();
+ Self {
+ board,
+ cursor: (0, 0),
+ }
+ }
+
+ fn move_cursor(&mut self, row_delta: isize, col_delta: isize) {
+ if self.board.is_solved() {
+ return;
+ }
+ let new_row =
+ (self.cursor.0 as isize + row_delta).clamp(0, (GRID_SIZE - 1) as isize) as usize;
+ let new_col =
+ (self.cursor.1 as isize + col_delta).clamp(0, (GRID_SIZE - 1) as isize) as usize;
+ self.cursor = (new_row, new_col);
+ }
+
+ fn set_cell_value(&mut self, val: Option<u8>) {
+ if self.board.is_solved() {
+ return;
+ }
+ self.board.set_value(self.cursor.0, self.cursor.1, val);
+ }
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+ enable_raw_mode()?;
+ let mut stdout = io::stdout();
+ execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
+ let backend = CrosstermBackend::new(stdout);
+ let mut terminal = Terminal::new(backend)?;
+
+ let mut app = App::new();
+ let res = run_app(&mut terminal, &mut app);
+
+ disable_raw_mode()?;
+ execute!(
+ terminal.backend_mut(),
+ LeaveAlternateScreen,
+ DisableMouseCapture
+ )?;
+ terminal.show_cursor()?;
+
+ if let Err(err) = res {
+ eprintln!("{:?}", err)
+ }
+
+ Ok(())
+}
+
+fn run_app<B: Backend>(
+ terminal: &mut Terminal<B>,
+ app: &mut App,
+) -> Result<(), Box<dyn std::error::Error>>
+where
+ B::Error: std::error::Error + 'static,
+{
+ loop {
+ terminal.draw(|f| ui(f, app))?;
+
+ if let Event::Key(key) = event::read()? {
+ match key.code {
+ KeyCode::Char('q') => return Ok(()),
+ KeyCode::Char('n') if app.board.is_solved() => {
+ app.board.generate();
+ app.cursor = (0, 0);
+ }
+ KeyCode::Char('s') => {
+ app.board.solve();
+ }
+ KeyCode::Char('h') | KeyCode::Left => app.move_cursor(0, -1),
+ KeyCode::Char('j') | KeyCode::Down => app.move_cursor(1, 0),
+ KeyCode::Char('k') | KeyCode::Up => app.move_cursor(-1, 0),
+ KeyCode::Char('l') | KeyCode::Right => app.move_cursor(0, 1),
+ KeyCode::Char(c) if c.is_digit(10) => {
+ let val = c.to_digit(10).unwrap() as u8;
+ if val == 0 {
+ app.set_cell_value(None);
+ } else {
+ app.set_cell_value(Some(val));
+ }
+ }
+ KeyCode::Char('x') | KeyCode::Backspace => app.set_cell_value(None),
+ _ => {}
+ }
+ }
+ }
+}
+
+fn ui(f: &mut Frame, app: &App) {
+ let chunks = Layout::default()
+ .direction(Direction::Vertical)
+ .constraints([Constraint::Min(13), Constraint::Length(3)].as_ref())
+ .split(f.area());
+
+ draw_board(f, chunks[0], app);
+ draw_help(f, chunks[1], app.board.is_solved());
+}
+
+fn draw_board(f: &mut Frame, area: Rect, app: &App) {
+ let board_width = 9 * 2 + 2;
+ let board_height = 9 + 2;
+
+ let board_area = Rect::new(
+ area.x + (area.width.saturating_sub(board_width as u16)) / 2,
+ area.y + (area.height.saturating_sub(board_height as u16)) / 2,
+ board_width as u16,
+ board_height as u16,
+ );
+
+ let block = Block::default().borders(Borders::ALL).title(" Sudoku ");
+ f.render_widget(block, board_area);
+
+ let inner = board_area.inner(ratatui::layout::Margin {
+ vertical: 1,
+ horizontal: 1,
+ });
+
+ for r in 0..GRID_SIZE {
+ for c in 0..GRID_SIZE {
+ let cell = app.board.cells[r][c];
+ let is_cursor = (r, c) == app.cursor;
+ let is_conflict = app.board.is_conflict(r, c);
+
+ let mut style = Style::default();
+ if cell.is_fixed {
+ style = style.add_modifier(Modifier::BOLD);
+ } else {
+ style = style.fg(Color::Cyan);
+ }
+
+ if is_conflict {
+ style = style.bg(Color::Red).fg(Color::White);
+ }
+
+ if is_cursor {
+ style = style.bg(Color::White).fg(Color::Black);
+ }
+
+ let text = match cell.value {
+ Some(v) => v.to_string(),
+ None => " ".to_string(),
+ };
+
+ let x_offset = c as u16 * 2;
+
+ f.render_widget(
+ Paragraph::new(text).style(style),
+ Rect::new(inner.x + x_offset, inner.y + r as u16, 1, 1),
+ );
+
+ if c % 3 == 2 && c < 8 {
+ f.render_widget(
+ Paragraph::new("│").style(Style::default().fg(Color::DarkGray)),
+ Rect::new(inner.x + x_offset + 1, inner.y + r as u16, 1, 1),
+ );
+ }
+ }
+ }
+}
+
+fn draw_help(f: &mut Frame, area: Rect, solved: bool) {
+ let help_text = if solved {
+ vec![Line::from(vec![
+ Span::styled(
+ "CONGRATULATIONS! ",
+ Style::default()
+ .fg(Color::Yellow)
+ .add_modifier(Modifier::BOLD),
+ ),
+ Span::raw("Press "),
+ Span::styled("n", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(" for new game, "),
+ Span::styled("q", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": quit"),
+ ])]
+ } else {
+ vec![Line::from(vec![
+ Span::styled("hjkl/Arrows", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": move, "),
+ Span::styled("1-9", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": input, "),
+ Span::styled("x/0/BS", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": delete, "),
+ Span::styled("s", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": solve, "),
+ Span::styled("q", Style::default().add_modifier(Modifier::BOLD)),
+ Span::raw(": quit"),
+ ])]
+ };
+ let help =
+ Paragraph::new(help_text).block(Block::default().borders(Borders::ALL).title(" Help "));
+ f.render_widget(help, area);
+}
