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313 lines
9.9 KiB
313 lines
9.9 KiB
use std::env::args;
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use std::io::stdout;
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use std::io::Write;
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use std::thread::sleep;
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use std::time::Duration;
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use chrono::Local;
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use chrono::Timelike;
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use rand::thread_rng;
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use rand::Rng;
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use pixelfoo::color::Color;
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use pixelfoo::point2d::p2d;
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use pixelfoo::point2d::Point2d;
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use pixelfoo::vec2d::v2d;
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use pixelfoo::vec2d::Vec2d;
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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enum Square {
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Unused,
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Unknown { prio: i32 },
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Corridor,
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Wall,
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Start,
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Finish,
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}
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impl Square {
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pub fn is_unknown(&self) -> bool {
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match self {
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Square::Unknown { .. } => true,
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_ => false,
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}
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}
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}
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struct Board(Vec<Vec<Square>>);
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fn send<T: Write>(w: &mut T, board: &Board) -> std::io::Result<()> {
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for line in &board.0 {
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for square in line {
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let c = match square {
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Square::Unused => Color::black(),
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Square::Unknown { prio } => {
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if *prio == 0 {
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Color::black()
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} else if *prio < 0 {
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Color::lightblue()
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} else {
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Color::darkyellow()
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}
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}
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Square::Corridor => Color::yellow(),
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Square::Wall => Color::darkblue(),
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Square::Start => Color::red(),
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Square::Finish => Color::green(),
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};
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w.write_all(&c.rgb())?;
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}
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}
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w.flush()
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}
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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enum Orientation {
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Horizontal,
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Vertical,
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}
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impl Board {
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fn new(board_size: Vec2d, maze_size: Vec2d) -> Board {
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Board(
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(0..board_size.y)
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.map(move |y| {
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(0..board_size.x)
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.map(|x| {
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if x < maze_size.x && y < maze_size.y {
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if x == 0
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|| x == maze_size.x - 1
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|| y == 0
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|| y == maze_size.y - 1
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|| (x % 2 == 0 && y % 2 == 0)
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{
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Square::Wall
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} else {
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Square::Unknown { prio: 0 }
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}
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} else {
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Square::Unused
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}
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})
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.collect::<Vec<_>>()
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})
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.collect::<Vec<_>>(),
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)
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}
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fn get(&self, pos: Point2d) -> Square {
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self.0[pos.y as usize][pos.x as usize]
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}
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fn set(&mut self, pos: Point2d, sq: Square) {
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self.0[pos.y as usize][pos.x as usize] = sq;
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}
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fn set_orientation(&mut self, desired: Orientation, pos: Point2d) {
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let sq = self.get(pos);
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match sq {
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Square::Unknown { .. } => {
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let prio;
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if pos.x % 2 == 0 && pos.y % 2 != 0 {
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// horizontal corridor, vertical wall
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prio = if desired == Orientation::Horizontal {
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10
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} else {
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-10
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};
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} else if pos.x % 2 != 0 && pos.y % 2 == 0 {
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// vertical corridor, horizontal wall
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prio = if desired == Orientation::Vertical {
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10
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} else {
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-10
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};
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} else {
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// always corridor at the end
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prio = 0;
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}
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self.set(pos, Square::Unknown { prio });
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}
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_ => (),
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}
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}
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fn set_horizontal(&mut self, pos: Point2d) {
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self.set_orientation(Orientation::Horizontal, pos);
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}
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fn set_vertical(&mut self, pos: Point2d) {
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self.set_orientation(Orientation::Vertical, pos);
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}
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fn draw_horizontal_segment(&mut self, pos: Point2d, size: Vec2d) {
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for x in 0..size.x {
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let xn = size.x - 1 - x;
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self.set_horizontal(pos + v2d(x, 0));
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for y in 1..x.min(xn).min(size.y / 2) + 1 {
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self.set_horizontal(pos + v2d(x, y));
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self.set_horizontal(pos + v2d(x, -y));
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}
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}
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}
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fn draw_vertical_segment(&mut self, pos: Point2d, size: Vec2d) {
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for y in 0..size.y {
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let yn = size.y - 1 - y;
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self.set_vertical(pos + v2d(0, y));
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for x in 1..y.min(yn).min(size.x / 2) + 1 {
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self.set_vertical(pos + v2d(x, y));
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self.set_vertical(pos + v2d(-x, y));
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}
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}
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}
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fn draw_7_segments(&mut self, pos: Point2d, size: Vec2d, segments: u8) {
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let length = size.x;
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let width = size.y;
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let delta = length + 1;
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let hsize = v2d(length, width);
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let vsize = v2d(width, length);
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if (segments & (1 << 0)) != 0 {
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self.draw_horizontal_segment(pos + v2d(1, 0), hsize);
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}
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if (segments & (1 << 1)) != 0 {
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self.draw_vertical_segment(pos + v2d(delta, 1), vsize);
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}
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if (segments & (1 << 2)) != 0 {
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self.draw_vertical_segment(pos + v2d(delta, delta + 1), vsize);
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}
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if (segments & (1 << 3)) != 0 {
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self.draw_horizontal_segment(pos + v2d(1, 2 * delta), hsize);
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}
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if (segments & (1 << 4)) != 0 {
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self.draw_vertical_segment(pos + v2d(0, delta + 1), vsize);
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}
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if (segments & (1 << 5)) != 0 {
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self.draw_vertical_segment(pos + v2d(0, 1), vsize);
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}
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if (segments & (1 << 6)) != 0 {
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self.draw_horizontal_segment(pos + v2d(1, delta), hsize);
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}
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}
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fn draw_digit(&mut self, pos: Point2d, size: Vec2d, digit: u8) {
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let segment_table = vec![0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f];
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let segments = segment_table[digit as usize];
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self.draw_7_segments(pos, size, segments);
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}
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}
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struct Move {
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from: Point2d,
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dir: Vec2d,
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prio: i32,
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}
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fn add_move<R>(board: &Board, open: &mut Vec<Move>, rng: &mut R, from: Point2d, dir: Vec2d)
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where
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R: Rng,
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{
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if let Square::Unknown { prio } = board.get(from + dir) {
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open.push(Move {
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from,
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dir,
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prio: prio * 100 + rng.gen_range(0, 1000),
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});
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}
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}
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const DEFAULT_ARG: isize = 16;
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fn main() -> std::io::Result<()> {
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let args = args().collect::<Vec<_>>();
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eprintln!("executing {}", args[0]);
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let x_size = args[1].parse::<usize>().unwrap();
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let y_size = args[2].parse::<usize>().unwrap();
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let arg = args[3].parse::<isize>().unwrap_or(DEFAULT_ARG);
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eprintln!("screen size {}x{}, arg {}", x_size, y_size, arg);
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let mut rng = thread_rng();
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let t_frame = 0.040; // s
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let delay = Duration::new(0, (1_000_000_000.0 * t_frame) as u32);
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let board_size = v2d(x_size as i32, y_size as i32);
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// round down to odd size for maze
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let maze_size = v2d(
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(board_size.x - 1) / 2 * 2 + 1,
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(board_size.y - 1) / 2 * 2 + 1,
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);
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// pick odd position at or near the middle
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let maze_mid = p2d((maze_size.x - 1) / 4 * 2 + 1, (maze_size.y - 1) / 4 * 2 + 1);
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let mut board = Board(Vec::new());
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let mut open = Vec::new();
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let mut last_drawn_minute = 99;
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loop {
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if open.is_empty() {
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// get time
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let dt = Local::now();
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let h = dt.hour();
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let m = dt.minute();
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if m != last_drawn_minute {
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last_drawn_minute = m;
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board = Board::new(board_size, maze_size);
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// draw time in prios
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let segment_size = v2d(11, 5);
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board.draw_digit(p2d(6, 8), segment_size, (h / 10) as u8);
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board.draw_digit(p2d(24, 8), segment_size, (h % 10) as u8);
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board.draw_digit(p2d(42, 8), segment_size, (m / 10) as u8);
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board.draw_digit(p2d(60, 8), segment_size, (m % 10) as u8);
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// start in the middle
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board.set(maze_mid, Square::Corridor);
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add_move(&board, &mut open, &mut rng, maze_mid, v2d(1, 0));
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add_move(&board, &mut open, &mut rng, maze_mid, v2d(0, 1));
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add_move(&board, &mut open, &mut rng, maze_mid, v2d(-1, 0));
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add_move(&board, &mut open, &mut rng, maze_mid, v2d(0, -1));
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}
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}
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// draw maze
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let work = arg.max(1);
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let mut count = 0;
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while !open.is_empty() && count < work {
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open.sort_unstable_by(|Move { prio: pa, .. }, Move { prio: pb, .. }| pa.cmp(pb));
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let Move {
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from: p0,
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dir: dir0,
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..
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} = open.pop().unwrap();
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let p1 = p0 + dir0;
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let p2 = p1 + dir0;
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if board.get(p1).is_unknown() {
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board.set(p1, Square::Corridor);
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board.set(p2, Square::Corridor);
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for dir1 in Vec2d::directions() {
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let p3 = p2 + dir1;
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let p4 = p3 + dir1;
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if board.get(p3).is_unknown() {
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if board.get(p4).is_unknown() {
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add_move(&board, &mut open, &mut rng, p2, dir1);
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} else {
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board.set(p3, Square::Wall);
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}
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}
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}
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count += 1;
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}
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if open.is_empty() {
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board.set(p2d(1, 1), Square::Start);
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board.set(p2d(maze_size.x - 2, maze_size.y - 2), Square::Finish);
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}
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}
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let mut buf = Vec::with_capacity((board_size.x * board_size.y * 3) as usize);
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send(&mut buf, &board)?;
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stdout().write_all(&buf)?;
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stdout().flush()?;
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sleep(delay);
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}
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}
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