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code guessing, round #42 (completed)

started at ; stage 2 at ; ended at

specification

they just wanna, they just wanna, oh, girls! girls just wanna have fun! so implement 2048 for them. submissions may be written in any language.

2048 is a puzzle game (which you have probably played before) based on sliding blocks on a grid. who could have guessed? it is based on a lineage of very similar games released at the same time, most notably the mobile game Threes, a clone of Threes called 1024, and a distinct clone of 1024 which is also called 2048. confusing, I know.

I'm sure you're quite familiar with how the game works already, but let's go over the rules again. the following specification will match the behaviour of the original JS game exactly.

the game takes place on a 4x4 grid. some spaces are empty, and some may contain tiles, which are labelled with powers of 2. when the game begins, the grid has 2 tiles on it. whenever a tile is placed on the board, it is put in a random empty space and has a 90% chance of being a 2 or a 10% chance of being a 4.

the player's only available move on each turn is to enter one of the 4 orthogonal directions to shift all the tiles in the grid in that direction. the tiles are moved in order of how close they are to the wall being pointed toward, the nearest ones first. they move as far as they can in the given direction, only stopping if they hit the edge of the grid or another tile with a different label.

if a tile hits another tile of the same label, the two merge: the tile moving is removed and the label of the tile it hit is doubled. a tile can only be merged with once in a single move.

after every move, if at least one tile moved, a tile is placed randomly, as described above. if there are no moves remaining that would move tiles, the player has lost; if a 2048 tile has been created, they have won.

here is an example of a move. the grid begins in this state:

4 - 2 2
8 8 8 -
2 2 2 2
2 - - 4

the player then decides to press right, so the tiles move like so:

- - 4 4
- - 8 16
- - 4 4
- - 2 4

after a random tile is placed, the grid may look like this:

- - 4 4
2 - 8 16
- - 4 4
- - 2 4

this process is repeated ad infinitum until the game is over.

your challenge is to implement an interactive playable version of 2048 through any medium you desire. after the player has won, you may allow them to keep playing, but this is not a requirement. this problem allows any language, and describes an interactive application, so there is no fixed API.

results

  1. πŸ‘‘ JJRubes +3 -0 = 3
    1. indigo (away until 9/26) (was taswelll)
    2. Lizzy Fleckenstein
    3. razetime (was kimapr)
    4. olive (was razetime)
    5. kimapr (was olus2000)
    6. Olivia (was indigo (away until 9/26))
    7. LyricLy (was Olivia)
    8. taswelll (was olive)
    9. ultlang
    10. luatic
    11. olus2000 (was LyricLy)
  2. LyricLy +5 -3 = 2
    1. taswelll
    2. Lizzy Fleckenstein
    3. kimapr
    4. ultlang (was razetime)
    5. JJRubes (was olus2000)
    6. luatic (was indigo (away until 9/26))
    7. Olivia
    8. olive
    9. olus2000 (was ultlang)
    10. indigo (away until 9/26) (was JJRubes)
    11. razetime (was luatic)
  3. luatic +5 -3 = 2
    1. olus2000 (was taswelll)
    2. Lizzy Fleckenstein
    3. kimapr
    4. indigo (away until 9/26) (was razetime)
    5. JJRubes (was olus2000)
    6. ultlang (was indigo (away until 9/26))
    7. Olivia
    8. olive
    9. taswelll (was ultlang)
    10. razetime (was JJRubes)
    11. LyricLy
  4. taswelll +4 -2 = 2
    1. olus2000 (was Lizzy Fleckenstein)
    2. kimapr
    3. JJRubes (was razetime)
    4. luatic (was olus2000)
    5. indigo (away until 9/26)
    6. Olivia
    7. Lizzy Fleckenstein (was olive)
    8. ultlang
    9. LyricLy (was JJRubes)
    10. razetime (was luatic)
    11. olive (was LyricLy)
  5. indigo (away until 9/26) +3 -1 = 2
    1. razetime (was taswelll)
    2. Lizzy Fleckenstein
    3. olive (was kimapr)
    4. LyricLy (was razetime)
    5. luatic (was olus2000)
    6. Olivia
    7. JJRubes (was olive)
    8. ultlang
    9. olus2000 (was JJRubes)
    10. taswelll (was luatic)
    11. kimapr (was LyricLy)
  6. razetime +2 -0 = 2
    1. olive (was taswelll)
    2. Lizzy Fleckenstein
    3. indigo (away until 9/26) (was kimapr)
    4. kimapr (was olus2000)
    5. luatic (was indigo (away until 9/26))
    6. Olivia
    7. olus2000 (was olive)
    8. JJRubes (was ultlang)
    9. LyricLy (was JJRubes)
    10. taswelll (was luatic)
    11. ultlang (was LyricLy)
  7. olus2000 +1 -0 = 1
    1. olive (was taswelll)
    2. luatic (was Lizzy Fleckenstein)
    3. LyricLy (was kimapr)
    4. Lizzy Fleckenstein (was razetime)
    5. Olivia (was indigo (away until 9/26))
    6. kimapr (was Olivia)
    7. taswelll (was olive)
    8. ultlang
    9. indigo (away until 9/26) (was JJRubes)
    10. JJRubes (was luatic)
    11. razetime (was LyricLy)
  8. olive +4 -4 = 0
    1. razetime (was taswelll)
    2. Lizzy Fleckenstein
    3. kimapr
    4. indigo (away until 9/26) (was razetime)
    5. JJRubes (was olus2000)
    6. luatic (was indigo (away until 9/26))
    7. Olivia
    8. olus2000 (was ultlang)
    9. taswelll (was JJRubes)
    10. ultlang (was luatic)
    11. LyricLy
  9. Lizzy Fleckenstein +4 -7 = -3
    1. indigo (away until 9/26) (was taswelll)
    2. kimapr
    3. JJRubes (was razetime)
    4. taswelll (was olus2000)
    5. LyricLy (was indigo (away until 9/26))
    6. Olivia
    7. olive
    8. olus2000 (was ultlang)
    9. razetime (was JJRubes)
    10. luatic
    11. ultlang (was LyricLy)
  10. kimapr +3 -6 = -3
    1. Olivia (was taswelll)
    2. Lizzy Fleckenstein
    3. JJRubes (was razetime)
    4. indigo (away until 9/26) (was olus2000)
    5. ultlang (was indigo (away until 9/26))
    6. LyricLy (was Olivia)
    7. olive
    8. olus2000 (was ultlang)
    9. razetime (was JJRubes)
    10. luatic
    11. taswelll (was LyricLy)
  11. ultlang +1 -4 = -3
    1. Lizzy Fleckenstein (was taswelll)
    2. JJRubes (was Lizzy Fleckenstein)
    3. LyricLy (was kimapr)
    4. olus2000 (was razetime)
    5. luatic (was olus2000)
    6. kimapr (was indigo (away until 9/26))
    7. Olivia
    8. indigo (away until 9/26) (was olive)
    9. razetime (was JJRubes)
    10. taswelll (was luatic)
    11. olive (was LyricLy)
  12. Olivia +3 -8 = -5
    1. taswelll
    2. JJRubes (was Lizzy Fleckenstein)
    3. kimapr
    4. indigo (away until 9/26) (was razetime)
    5. luatic (was olus2000)
    6. ultlang (was indigo (away until 9/26))
    7. Lizzy Fleckenstein (was olive)
    8. olus2000 (was ultlang)
    9. razetime (was JJRubes)
    10. olive (was luatic)
    11. LyricLy

entries

you can download all the entries

entry #1

written by taswelll
submitted at
1 like

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comments 0

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2048.apls Unicode text, UTF-8 text
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#!/usr/local/bin/dyalogscript
βŽ•IO←0 β‹„ g←4 4↑~∘0⍀1
c←>/∘⌽¨(,\0βˆ˜β‰ Γ—2=/0,⊒)
r←{⍡+2 4[0=?10]Γ—4 4⍴0=⍋⍒(1+?⍨16)Γ—0=,⍡}
s←{β‰βˆ˜βŒ½β£β΅ gΓ—βˆ˜(1∘⌽+~)∘c⍨g βŒ½βˆ˜β‰β£β΅ ⊒⍺}
lβ†βˆ§/∘,{~⍡[1;1]βˆŠβ΅Γ—3 3⍴0 1}⌺3 3⍀⊣
βŽ•β†'LW'[2048β‰€βŒˆ/,βŽ•β†{
 βŽ• βŽ•β†β΅ 'enter key (wasd): '
 r⍣(A≒⍡)⊒A←⍡s'asdw'β³βŽ•CβŠƒβž
}⍣l r 4 4⍴0]

entry #2

written by Lizzy Fleckenstein
submitted at
2 likes

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comments 0

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dir rs2048
dir src
display.rs Unicode text, UTF-8 text
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use super::game::{Board, Pos};
use crossterm::{cursor, queue, style::*};

enum Mode {
    Roof_,
    Data_,
    Floor,
    Empty,
    Base_,
}

const FIELD_HEIGHT: usize = 3;
const FIELD_WIDTH: usize = 8;

fn write_line(stdout: &mut std::io::Stdout, vec: &[u32], mode: Mode) -> crossterm::Result<()> {
    let mut vec = vec;
    let len = vec.len();

    queue!(
        stdout,
        Print(match mode {
            Mode::Roof_ => "┏",
            Mode::Data_ => "┃",
            Mode::Floor => "β” ",
            Mode::Empty => "┃",
            Mode::Base_ => "β”—",
        })
    )?;

    for i in 0..len {
        let &n = vec.last().unwrap();
        vec = &vec[0..vec.len() - 1];

        match mode {
            Mode::Data_ | Mode::Empty => queue!(stdout, Print(" "))?,
            _ => {}
        }

        match mode {
            Mode::Data_ | Mode::Empty if n != 0 => {
                let (r, g, b) = hsl::HSL {
                    h: (n * 360 / 12) as f64,
                    s: 1.0,
                    l: 0.5,
                }
                .to_rgb();

                queue!(
                    stdout,
                    SetColors(Colors::new(Color::Black, Color::Rgb { r, g, b }))
                )?;
            }
            _ => {}
        };

        queue!(
            stdout,
            Print(match mode {
                Mode::Roof_ | Mode::Base_ => "━".repeat(FIELD_WIDTH),
                Mode::Floor => "─".repeat(FIELD_WIDTH),
                Mode::Data_ if n != 0 => format!("{:^w$}", 1 << n, w = FIELD_WIDTH - 2),
                Mode::Empty | Mode::Data_ => " ".repeat(FIELD_WIDTH - 2),
            })
        )?;

        match mode {
            Mode::Data_ | Mode::Empty => {
                queue!(stdout, SetAttribute(Attribute::Reset), Print(" "))?
            }
            _ => {}
        }

        if i != len - 1 {
            queue!(
                stdout,
                Print(match mode {
                    Mode::Roof_ => "β”―",
                    Mode::Data_ => "β”‚",
                    Mode::Floor => "β”Ό",
                    Mode::Empty => "β”‚",
                    Mode::Base_ => "β”·",
                })
            )?;
        }
    }

    queue!(
        stdout,
        Print(match mode {
            Mode::Roof_ => "β”“",
            Mode::Data_ => "┃",
            Mode::Floor => "┨",
            Mode::Empty => "┃",
            Mode::Base_ => "β”›",
        }),
        cursor::MoveToNextLine(1),
    )?;

    Ok(())
}

pub fn display_board(stdout: &mut std::io::Stdout, board: &Board) -> crossterm::Result<()> {
    let dummy = vec![0; board.size.x as usize];

    write_line(stdout, &dummy, Mode::Roof_)?;

    for y in 0..board.size.y {
        let vec = (0..board.size.x)
            .rev()
            .map(|x| board.get(Pos::new(x, y)).value())
            .collect::<Vec<u32>>();

        for i in 0..FIELD_HEIGHT {
            write_line(
                stdout,
                &vec,
                if i == FIELD_HEIGHT / 2 {
                    Mode::Data_
                } else {
                    Mode::Empty
                },
            )?;
        }

        if y != board.size.y - 1 {
            write_line(stdout, &dummy, Mode::Floor)?;
        }
    }

    write_line(stdout, &dummy, Mode::Base_)?;

    Ok(())
}
game.rs ASCII text
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pub use glam::i32::IVec2 as Pos;
use rand::seq::IteratorRandom;
use std::cell::RefCell;

trait Swap {
    fn swap(self) -> Self;
}

impl Swap for Pos {
    fn swap(self) -> Self {
        Self::new(self.y, self.x)
    }
}

pub struct Field(RefCell<u32>);

enum MergeResult {
    Merged(u32),
    Replaced,
    Blocked,
    Empty,
}

impl Field {
    fn new() -> Self {
        Self(RefCell::new(0))
    }

    pub fn value(&self) -> u32 {
        *self.0.borrow()
    }

    fn merge(&self, other: &Self) -> MergeResult {
        let mut s = self.0.borrow_mut();
        let mut o = other.0.borrow_mut();

        if *o == 0 {
            return MergeResult::Empty;
        }

        if *s == 0 {
            *s = *o;
            *o = 0;

            return MergeResult::Replaced;
        }

        if *s == *o {
            *s += 1;
            *o = 0;

            return MergeResult::Merged(1 << *s);
        }

        MergeResult::Blocked
    }
}

pub struct Board {
    pub size: Pos,
    fields: Vec<Vec<Field>>,
}

pub enum Dir {
    Up,
    Down,
    Left,
    Right,
}

impl Board {
    pub fn new(size: Pos) -> Self {
        Self {
            size,
            fields: (0..size.x)
                .map(|_| (0..size.y).map(|_| Field::new()).collect())
                .collect(),
        }
    }

    pub fn step(&self, dir: Dir) -> Option<u32> {
        let dir = match dir {
            Dir::Up => -Pos::Y,
            Dir::Down => Pos::Y,
            Dir::Left => -Pos::X,
            Dir::Right => Pos::X,
        };

        let step_row = dir.abs().swap();
        let step_col = -dir;

        let len_row = (step_row.abs() * self.size).max_element();
        let len_col = (step_col.abs() * self.size).max_element();

        let start = (dir + Pos::ONE) / 2 * (self.size - Pos::ONE);

        let mut score = None;

        for row in 0..len_row {
            let start_row = start + row * step_row;

            for col1 in 0..len_col - 1 {
                let field1 = self.get(start_row + col1 * step_col);

                for col2 in col1 + 1..len_col {
                    let field2 = self.get(start_row + col2 * step_col);

                    match field1.merge(field2) {
                        MergeResult::Merged(sc) => {
                            score = Some(score.unwrap_or(0) + sc);
                            break;
                        }
                        MergeResult::Replaced => score = Some(score.unwrap_or(0)),
                        MergeResult::Blocked => break,
                        MergeResult::Empty => continue,
                    }
                }
            }
        }

        score
    }

    pub fn get(&self, pos: Pos) -> &Field {
        self.fields
            .get(pos.x as usize)
            .unwrap()
            .get(pos.y as usize)
            .unwrap()
    }

    pub fn spawn<R>(&self, rng: &mut R)
    where
        R: rand::Rng + ?core::marker::Sized,
    {
        if let Some(field) = self
            .fields
            .iter()
            .flat_map(|v| v.iter())
            .filter(|f| f.value() == 0)
            .choose(rng)
        {
            *field.0.borrow_mut() = 1;
        }
    }
}
main.rs ASCII text
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pub mod display;
pub mod game;

use crossterm::{cursor, event, execute, queue, style, terminal};
use game::{Board, Dir::*, Pos};
use std::io::Write;

fn main() {
    let mut rng = rand::thread_rng();

    let mut stdout = std::io::stdout();
    queue!(stdout, terminal::EnterAlternateScreen, cursor::Hide).unwrap();

    terminal::enable_raw_mode().unwrap();

    let board = Board::new(Pos::new(4, 4));
    board.spawn(&mut rng);
    board.spawn(&mut rng);

    let mut score = 0;

    loop {
        queue!(
            stdout,
            terminal::Clear(terminal::ClearType::All),
            cursor::MoveTo(0, 0),
            style::SetAttribute(style::Attribute::Bold),
            style::Print("Score: ".to_string()),
            style::SetAttribute(style::Attribute::Reset),
            style::Print(score.to_string()),
            cursor::MoveToNextLine(1),
        )
        .unwrap();
        display::display_board(&mut stdout, &board).unwrap();
        stdout.flush().unwrap();

        if let Ok(evt) = event::read() {
            match evt {
                event::Event::Key(event::KeyEvent { code, .. }) => match code {
                    event::KeyCode::Char(ch) => {
                        if let Some(sc) = board.step(match ch.to_ascii_lowercase() {
                            'w' => Up,
                            'a' => Left,
                            's' => Down,
                            'd' => Right,
                            'q' => break,
                            _ => continue,
                        }) {
                            score += sc;
                            board.spawn(&mut rng);
                        }
                    }
                    _ => {}
                },
                _ => {}
            }
        } else {
            break;
        }
    }

    terminal::disable_raw_mode().unwrap();
    execute!(stdout, cursor::Show, terminal::LeaveAlternateScreen).unwrap();
}
.gitignore ASCII text
1
/target
Cargo.lock ASCII text
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3

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                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

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entry #3

written by kimapr
submitted at
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kimapr ΒΆ

updated versions available at gitlab and my website

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.gitignore ASCII text
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README.md ASCII text
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# 2048.php

An implementation of 2048 in PHP. Supports arbitrary board sizes.

## Web UI

**NOTE**: Unfinished.

Uses streamed HTML and CSS to create dynamic content without any client-side
JavaScript.

CGI. Communication between the main game process and control scripts (invoked
by form buttons targeting an invisible iframe) is done via UNIX domain datagram
sockets. Will not work on Windows, get a real operating system.

For convenience, a CLI script is provided that runs a pre-configured lighttpd
instance:

    ./server.php [address <port>]

## CLI

Simple CLI. Displays numbers on the board as base 2 logarithms in hexadecimal
(1=>2, 2=>4, b=>2048, etc.).

    ./cli.php [width [height [initial blocks]]]
cli.php ASCII text
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#!/usr/bin/php
<?php
include 'game.php';

class x1p11TextUI {
	private $game;
	private $board;
	private $ents;
	private $w, $h;
	private $lost;
	private $won;
	private $score;
	private const STATES = [
		" ",
		"new" => "!",
		"slide" => ":",
		"merge" => "+",
	];
	private function set($x, $y, $v = null, $new = 0) {
		$v = $v == null ? '.' : dechex(log($v, 2));
		$v = (object) ['v' => $v, 'new' => $new];
		$this->board[$y][$x] = $v;
	}
	private function expire() {
		for ($y = 0; $y < $this->h; $y++) {
			for ($x = 0; $x < $this->w; $x++) {
				$this->board[$y][$x]->new = false;
			}
		}
	}
	private function board_dump() {
		for ($y = 0; $y < $this->h; $y++) {
			echo ' ';
			for ($x = 0; $x < $this->w; $x++) {
				$v = $this->board[$y][$x];
				$v = $v->v . (self::STATES[$v->new]);
				echo $v;
			}
			echo "\n";
		}
	}
	public function __construct(x1p11 $game) {
		$this->game = $game;
		$this->board = [];
		$this->ents = [];
		$this->score = 0;
		[$this->w, $this->h] = $game->dimensions();
		for ($y = 0; $y < $this->h; $y++) {
			for ($x = 0; $x < $this->w; $x++) {
				$this->set($x, $y);
			}
		}
		/*
			// Debug
			$this->game->attach_handler(function ($type, $event) {
				/* //noise
					echo "Event: ";
					print_r($type->name);
					echo "\n";
					foreach ((array)$event as $k=>$v) {
						echo "	$k: ";
						print_r($v);
						echo "\n";
					}
					echo "\n";
				//* /
			});
			$deleting = [];
			$this->game->detach_handler($this->game->attach_handler(function ($type, $event) use (&$deleting) {
				if($type!=BoardEventType::Spawn){
					return;
				}
				$deleting[] = $event->pos;
			}));
			foreach ($deleting as [$x, $y]) {
				$this->game->set($x, $y);
			}
			foreach ([
				[4, 5, 6, 4],
				[1, 4, 2, 2],
				[2, 3, 0, 2],
				[0, 0, 0, 0],
			] as $y => $row) {
				foreach ($row as $x => $v) {
					$this->game->set($x, $y, $v>0?(2 ** $v):null);
				}
			}
		//*/
		$this->game->attach_handler($handler = function ($type, $event) use (&$handler) {
			switch ($type) {
			case BoardEventType::Slide:
				$ent = $this->ents[$event->id];
				[$x, $y] = $ent->pos;
				$this->set($x, $y);
				$ent->pos = $event->pos;
				[$x, $y] = $ent->pos;
				$this->set($x, $y, $ent->value, "slide");
				break;
			case BoardEventType::Merge:
				$src = $this->ents[$event->src];
				$dest = $this->ents[$event->dest];
				$handler(BoardEventType::Despawn, (object) [
					'id' => $event->src,
				]);
				$dest->value += $src->value;
				[$x, $y] = $dest->pos;
				$this->set($x, $y, $dest->value, "merge");
				break;
			case BoardEventType::Score:
				$this->score += $event->value;
				break;
			case BoardEventType::Spawn:
				$ent = (object) [
					'pos' => $event->pos,
					'value' => $event->value,
				];
				$this->ents[$event->id] = $ent;
				[$x, $y] = $ent->pos;
				$this->set($x, $y, $ent->value, "new");
				break;
			case BoardEventType::Despawn:
				$ent = $this->ents[$event->id];
				unset($this->ents[$event->id]);
				[$x, $y] = $ent->pos;
				$this->set($x, $y);
				break;
			case BoardEventType::Lose:
				$this->lost = true;
				if ($this->won) {
					echo "Game over.\n";
				} else {
					echo "You lost the game.\n";
				}
				break;
			case BoardEventType::Win:
				$this->won = true;
				echo "You won!\n";
				break;
			}
		});
		$cmds = [
			'w' => Direction::Up,
			's' => Direction::Down,
			'a' => Direction::Left,
			'd' => Direction::Right,
			'q' => false,
		];
		$this->expire();
		while (1) {
			$this->board_dump();
			echo "Score: {$this->score}\n";
			if ($this->lost) {
				break;
			}
			//var_dump($this->game);
			$cmd = "";
			while (!isset($cmds[$cmd])) {
				$cmd = readline('> ');
				if ($cmd === false) {
					break 2;
				}
				$cmd = strtolower($cmd);
			}
			$cmd = $cmds[$cmd];
			if (!$cmd) {
				break;
			}
			$this->expire();
			$this->game->move($cmd);
		}
	}
}

$w = 4;
$h = 4;
$c = 2;
if (isset($argv[1])) {$w = $argv[1];}
if (isset($argv[2])) {$h = $argv[2];}
if (isset($argv[3])) {$c = $argv[3];}
if (!(is_numeric($w) && is_numeric($h) && is_numeric($c))) {
	echo <<<Eof
	2048.php CLI. WASD to move.
	Numbers are displayed as base 2 logarithms in hex.
	Usage: 2048.php [width [height [initial blocks]]]

	Eof;
	return;
}

new x1p11TextUI(new x1p11($w, $h, $c));
game.php Unicode text, UTF-8 text
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<?php

enum Direction: int {
case Down = 0;
case Left = 1;
case Up = 2;
case Right = 3;
}

enum BoardEventType {
case Spawn;
case Slide;
case Merge;
case Despawn;

case Score;
case Win;
case Lose;
}

class x1p11 {
	private $dirs;
	private $board;
	private $w, $h;
	private $freeds;
	private $ents;
	private $won;
	private $lost;
	private $score;
	private $handlers;
	private function pos($x, $y) {
		return $this->w * $y + $x;
	}
	private function spawn(Callable $handler, ?int $c = 1) {
		$cands = [];
		for ($y = 0; $y < $this->h; $y++) {
			for ($x = 0; $x < $this->w; $x++) {
				if ($this->board[$this->pos($x, $y)] == -1) {
					$cands[] = [$x, $y];
				}
			}
		}
		$c = min(count($cands), $c);
		if ($c == 0) {
			return;
		}
		$ids = array_slice($this->freeds, count($this->freeds) - $c);
		$rands = array_rand($cands, $c);
		if ($c == 1) {
			$rands = [$rands];
		}
		foreach (array_map(function ($k) use (&$cands) {return $cands[$k];}, $rands) as $i => [$x, $y]) {
			$handler(BoardEventType::Spawn, (object) [
				'pos' => [$x, $y],
				'id' => $ids[$i],
				'value' => rand(1, 2) * 2,
			]);
		}
	}
	private function safeset($i, $v) {
		if ($this->board[$i] != -1) {
			$this->apply(BoardEventType::Despawn, (object) [
				'id' => $this->board[$i],
			]);
		}
		$this->board[$i] = $v;
	}
	private function apply(BoardEventType $type, object $event) {
		switch ($type) {
		case BoardEventType::Slide:
			$id = $event->id;
			$pos = $event->pos;

			$ent = $this->ents[$id];
			$this->safeset($this->pos(...$pos), $id);
			$this->board[$this->pos(...$ent->pos)] = -1;
			$ent->pos = $pos;
			break;

		case BoardEventType::Merge:
			$src = $event->src;
			$dest = $event->dest;

			$entsrc = $this->ents[$src];
			$entdest = $this->ents[$dest];
			$this->apply(BoardEventType::Despawn, (object) [
				'id' => $src,
			]);
			$entdest->value += $entsrc->value;
			break;

		case BoardEventType::Score:
			$score = $event->value;

			$this->score += $score;
			break;

		case BoardEventType::Despawn:
			$id = $event->id;

			$ent = $this->ents[$event->id];
			$this->freeds[$event->id] = $event->id;
			unset($this->ents[$event->id]);
			$this->board[$this->pos(...$ent->pos)] = -1;
			break;

		case BoardEventType::Spawn:
			$id = $event->id;
			$pos = $event->pos;
			$value = $event->value;

			unset($this->freeds[$id]);
			$this->safeset($this->pos(...$pos), $id);
			$this->ents[$id] = (object) [
				'pos' => $pos,
				'value' => $value,
			];
			break;

		case BoardEventType::Lose:
			$this->lost = true;
			break;

		case BoardEventType::Win:
			$this->won = true;
			break;
		}
	}
	private function _move(Callable $handler, Direction $dir, bool $check = true) {
		[$ox, $oy, $mc, $mb, $cdx, $cdy, $bdx, $bdy] = $this->dirs[$dir->value];
		$moved = false;
		for ($c = 0; $c < $mc; $c++) {
			[$xπŸ₯Ί, $yπŸ₯Ί] = [$ox, $oy];
			[$x😈, $y😈] = [$ox, $oy];
			for ([$bπŸ₯Ί, $b😈] = [0, 0]; $bπŸ₯Ί < $mb - 1 && $b😈 < $mb;) {
				$idπŸ₯Ί = $this->board[$this->pos($xπŸ₯Ί, $yπŸ₯Ί)];
				$valπŸ₯Ί = $idπŸ₯Ί != -1 ? $this->ents[$idπŸ₯Ί]->value : null;
				$merges = $idπŸ₯Ί == -1 ? 2 : 1;
				for (; $merges > 0;) {
					do {
						[$x😈, $y😈, $b😈] = [$x😈 + $bdx, $y😈 + $bdy, $b😈 + 1];
					} while ($b😈 <= $bπŸ₯Ί);
					if ($b😈 >= $mb) {
						break;
					}
					$id😈 = $this->board[$this->pos($x😈, $y😈)];
					$val😈 = $id😈 != -1 ? $this->ents[$id😈]->value : null;
					if ($id😈 != -1) {
						$merges--;
						if ($idπŸ₯Ί == -1) {
							$handler(BoardEventType::Slide, (object) [
								'id' => $id😈,
								'pos' => [$xπŸ₯Ί, $yπŸ₯Ί],
								'lane' => $c,
							]);
							$valπŸ₯Ί = $val😈;
							$val😈 = null;
							$idπŸ₯Ί = $id😈;
							$id😈 = -1;
							$moved = true;
						} elseif ($valπŸ₯Ί == $val😈) {
							$handler(BoardEventType::Merge, (object) [
								'src' => $id😈,
								'dest' => $idπŸ₯Ί,
								'lane' => $c,
							]);
							$valπŸ₯Ί = $valπŸ₯Ί + $val😈;
							$val😈 = null;
							$idπŸ₯Ί = $id😈;
							$id😈 = -1;
							$handler(BoardEventType::Score, (object) [
								'value' => $valπŸ₯Ί,
							]);
							if ($check && !$this->won && $valπŸ₯Ί >= 2048) {
								$handler(BoardEventType::Win, (object) []);
							}
							$moved = true;
						} else {
							[$x😈, $y😈, $b😈] = [$x😈 - $bdx, $y😈 - $bdy, $b😈 - 1];
							break;
						}
					}
				}
				[$xπŸ₯Ί, $yπŸ₯Ί, $bπŸ₯Ί] = [$xπŸ₯Ί + $bdx, $yπŸ₯Ί + $bdy, $bπŸ₯Ί + 1];
			}
			[$ox, $oy] = [$ox + $cdx, $oy + $cdy];
		}
		if (!$check) {
			return $moved;
		}
		if ($moved) {
			$this->spawn($handler);
		}
		$lost = true;
		foreach (Direction::cases() as $cdir) {
			if ($cdir != $dir && $this->_move(fn() => null, $cdir, false)) {
				$lost = false;
				break;
			}
		}
		if ($lost) {
			$handler(BoardEventType::Lose, (object) []);
		}
	}
	private function handler(...$a) {
		$this->apply(...$a);
		foreach ($this->handlers as $f) {
			$f(...$a);
		}
	}

	public function __construct(?int $w = 4, ?int $h = null, ?int $c = 2) {
		$h = $h == null ? $w : $h;
		$this->board = [];
		$this->freeds = [];
		$this->ents = [];
		$this->handlers = new SplObjectStorage();
		$this->won = false;
		$this->lost = false;
		$this->score = 0;
		$id = 0;
		for ($i = 0; $i < $w * $h; $i++) {
			$this->board[] = -1;
			$this->freeds[$id] = $id;
			$id++;
		}
		array_reverse($this->freeds, true);
		[$mx, $my] = [$w - 1, $h - 1];
		$this->dirs = [
			[0, $my, $w, $h, 1, 0, 0, -1],
			[0, 0, $h, $w, 0, 1, 1, 0],
			[$mx, 0, $w, $h, -1, 0, 0, 1],
			[$mx, $my, $h, $w, 0, -1, -1, 0],
		];
		[$this->w, $this->h] = [$w, $h];
		$this->spawn([$this, 'apply'], $c);
	}
	public function dimensions() {
		return [$this->w, $this->h];
	}
	public function attach_handler(Callable $handler) {
		if (!is_object($handler)) {
			$handler = static function (...$a) use ($handler) {
				return $handler(...$a);
			};
		}
		$this->handlers->attach($handler);
		foreach ($this->ents as $id => $ent) {
			$handler(BoardEventType::Spawn, (object) [
				'id' => $id,
				'pos' => $ent->pos,
				'value' => $ent->value,
			]);
			if ($this->won) {
				$handler(BoardEventType::Win, (object) []);
			}
			if ($this->lost) {
				$handler(BoardEventType::Lose, (object) []);
			}
			$handler(BoardEventType::Score, (object) [
				'value' => $this->score,
			]);
		}
		return $handler;
	}
	public function detach_handler(Callable $handler) {
		$this->handlers->detach($handler);
	}
	public function move(Direction $dir) {
		$this->_move([$this, 'handler'], $dir);
	}
	public function get(int $x, int $y) {
		$pos = $this->pos($x, $y);
		$id = $this->board[$pos];
		if ($this->board[$id] == -1) {
			return null;
		}
		return $this->ents[$id]->value;
	}
	public function set(int $x, int $y, ?int $value = null) {
		$pos = $this->pos($x, $y);
		$id = $this->board[$pos];
		if ($id != -1) {
			$this->handler(BoardEventType::Despawn, (object) [
				'id' => $id,
			]);
		}
		if ($value != null) {
			[$id] = array_slice($this->freeds, count($this->freeds) - 1);
			$this->handler(BoardEventType::Spawn, (object) [
				'id' => $id,
				'pos' => [$x, $y],
				'value' => $value,
			]);
		}
	}
}
index.php ASCII text
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<?php
include 'game.php';
include 'webutil.php';

ignore_user_abort(true);
define("DIR", getenv("C2K48_TMP_PREFIX") ?: "./tmp/c2k48_");

// the handler never runs in practice but not having one makes the script
// terminate on connection abort. i have no idea why.
$alive = true;
pcntl_signal(SIGTERM, function () {
	global $alive;
	$alive = false;
	error_log("bai!");
});

$chunking = false;

class BlockAnims {
	private $stylist;
	private $stack;
	private $buf;
	private $name;
	private $ents;
	private $t;
	//private $loaded;
	private $game;
	private static function valcolor($v) {
		return [255, floor(max(200 - ((log($v, 2) / 11) ** 1) * 200, 0)), floor(max(120 - ((log($v, 2) / 11) ** 1) * 120, 0))];
	}
	public function __construct(StyleMutator $stylist, string $name, x1p11 $game, Callable $write) {
		[$w, $h] = $game->dimensions();
		$entc = $w * $h;
		$this->stack = [];
		$this->name = $name;
		//$this->loaded=false;
		$this->game = $game;
		$this->stylist = $stylist;
		for ($i = 0; $i < $entc; $i++) {
			$ent = (object) [];
			$elid = $name . dechex($i);
			$elem = "<div class=b id=$elid><div>";
			$ent->name = '#' . $elid;
			$ent->num = new CursedNumber($stylist, $elid . "n", appendf($elem), 5);
			$ent->vis = false;
			$ent->real = ['color' => [0, 0, 0], 'pos' => [0, 0], 'z' => 0, 'value' => 0];
			$ent->fake = $ent->real;
			$elem .= "</div></div>\n";
			$write($elem);
			$this->ents[] = $ent;
		}
		$this->draw(0);
		/*$game->attach_handler(function($type,$event){
				if($this->loaded){
					//$realm="slide";
					switch($type){
					case BoardEventType::Slide:
						$id=$event->id;
						$ent=$this->ents[$id];
						break;
					case BoardEventType::Merge:
						break;
					case BoardEventType::Despawn:
						throw new Exception("unimplemented");
						break;
					case BoardEventType::Spawn:
						//$realm="spawn";
						break;
					}
				}else{
				}
			});
		*/
	}
	private function update(float $dt) {
		if ($dt <= 0) {return;}
		if (count($this->stack) == 0) {return;}
		$this->t += $dt;
	}
	public function draw(float $dt) {
		//$this->update($dt);
		foreach ($this->ents as $id => $ent) {
			$ent->vis = false;
		}
		$this->game->detach_handler($this->game->attach_handler(function ($type, $event) {
			if ($type != BoardEventType::Spawn) {
				return;
			}
			$value = $event->value;
			$pos = $event->pos;
			$ent = $this->ents[$event->id];
			$ent->vis = true;
			$ent->real = ['color' => self::valcolor($value), 'pos' => $pos, 'z' => 0, 'value' => $value];
			$ent->fake = $ent->real;
		}));
		[$w, $h] = $this->game->dimensions();
		$stylist = $this->stylist;
		foreach ($this->ents as $id => $ent) {
			$stylist->set($ent->name, "display", $ent->vis ? 'flex' : 'none');
			$stylist->set($ent->name, "z-index", $ent->fake['z']);
			$stylist->set($ent->name, "justify-content", "center");
			$stylist->set($ent->name, "align-items", "center");
			$stylist->set($ent->name, "position", "absolute");
			$stylist->set($ent->name, "background-color", sprintf("#%02X%02X%02X", ...$ent->fake['color']));
			[$x, $y] = $ent->fake['pos'];
			$stylist->set($ent->name, "left", sprintf("%f%%", ($x / $w) * 100));
			$stylist->set($ent->name, "top", sprintf("%f%%", ($y / $w) * 100));
			$stylist->set($ent->name, "width", sprintf("%f%%", (1 / $w) * 100));
			$stylist->set($ent->name, "height", sprintf("%f%%", (1 / $h) * 100));
			$stylist->set($ent->name, "font-size", "2em");
			$ent->num->draw($ent->fake['value']);
		}
	}
	public function mstart() {
		$this->buf = [];
	}
	public function mend() {
		array_push($this->stack, array_values($this->buf));
	}
}

const MOVES = [
	'u' => Direction::Up,
	'd' => Direction::Down,
	'l' => Direction::Left,
	'r' => Direction::Right,
];

function game(&$quitf) {
	global $alive;
	$uid = bin2hex(random_bytes(8));
	$dir = DIR . hash("sha256", $uid);
	$socket = socket_create(AF_UNIX, SOCK_DGRAM, 0);
	socket_bind($socket, $dir);
	socket_set_nonblock($socket);
	$quitf = function () use (&$socket, &$dir) {
		socket_close($socket);
		unlink($dir);
	};
	chunk_start();
	$styles = "";
	$cons = "";
	$elems = "";
	$statusl = "";
	$stwrite = appendf($styles);
	$stylist = new StyleMutator(callf($stwrite));
	foreach ([
		["l", "&lt;", 1, 2],
		["d", "v", 2, 3],
		["u", "^", 2, 1],
		["r", "&gt;", 3, 2],
	] as [$cmd, $label, $x, $y]) {
		$cons .=
			"<form method=post action=act/$uid/$cmd id=cb$cmd name=cb$cmd target=out></form>" .
			"<div class=conbc id=cbd$cmd><button class=conb form=cb$cmd>$label</button></div>";
		$stylist->set("#cbd$cmd", "grid-row-start", $y);
		$stylist->set("#cbd$cmd", "grid-column-start", $x);
	}
	$statusl .= "<div>";
	$tlab = new CursedNumber($stylist, "tcc", appendf($statusl));
	$statusl .= " fps</div><div id=win>You won!</div><div>score: ";
	$scor = new CursedNumber($stylist, "scc", appendf($statusl));
	$tlab->draw(0);
	$scor->draw(0);
	$game = new x1p11(4, 4);
	$gamer = new BlockAnims($stylist, "gg", $game, appendf($elems));
	[$w, $h] = $game->dimensions();
	$statusl .= "</div>";
	unset($cmd, $label);
	$bvalc = 16;
	unset($i, $elem, $elid, $bval, $bvald, $elnc, $elnid);
	$stylist->set("#win", "display", "none");
	$stylist->set("#die", "display", "none");
	$stylist->present();
	$headch = <<<Eof
	<!DOCTYPE html>
	<head><meta name="viewport" content="width=device-width" /><title>2048.php</title></head>
	<style>
	body,html{width:100%;height:100%;margin:0;padding:0;font-size:min(1em,3vmin)}
	#cont{display:flex;width:100%;height:100%;flex-direction:row;}
	#bcont{flex-grow:1;padding:2em;display:flex;align-items:center;justify-content:center}
	.filler{flex-grow:1}
	#sidec{font-size:1.5em;flex-basis:min(13rem,50vmin);padding:1rem;border-left:solid 1px black;display:flex;flex-direction:column;}
	@media(max-aspect-ratio:1/1){
		#cont{flex-direction:column}
		#sidec{flex-direction:row;border-left:initial;border-top:solid 1px black}
	}
	#bcont2{container-name:bbox;container-type:size;width:100%;height:100%;display:flex;justify-content:center;align-items:center}
	#board{aspect-ratio:$w/$h;border:solid 1px black;position:relative}
	@container bbox (max-aspect-ratio:$w/$h) {#board{width:100%}}
	@container bbox not (max-aspect-ratio:$w/$h) {#board{height:100%}}
	#if{display:none}
	#con{display:grid;aspect-ratio:1;}
	.conbc{width:100%;height:100%;}
	.conb{font-size:1em;width:100%;height:100%}
	form{display:none}
	</style>
	$styles<iframe id=if name=out></iframe>
	<div id=cont>
	<div id=bcont><div id=bcont2><div id=board>
	$elems</div></div></div>
	<div id=sidec>
	<div id=status>$statusl</div>
	<div class=filler></div>
	<span id=die>Game over.</span><div id=con>
	$cons
	</div>
	</div>
	</div>

	Eof;
	unset($styles, $elems, $cons, $statusl);
	$stwrite = 'chunk';
	chunk($headch);
	$timer = new DTimer();
	$score = 0;
	$lost = false;
	$won = false;
	$game->attach_handler(function ($type, $event) use (&$lost, &$won, &$score) {
		switch ($type) {
		case BoardEventType::Score:
			$score += $event->value;
			break;
		case BoardEventType::Win:
			$won = true;
			break;
		case BoardEventType::Lose:
			$lost = true;
			break;
		}
	});
	$t = 0;
	$tt = (int) (1000_000 / 30);
	$hidden = false;
	$hidt = 1;
	$tod = 10;
	$ii = 2;
	while (1) {
		$dt = $timer->tick();
		$t += $dt;
		$hidt -= $dt;
		$tod -= $dt;
		if ($hidt <= 0) {
			$hidden = !$hidden;
			$hidt = 0.5;
		}
		//$stylist->set("#board","display",$hidden?"none":"block");
		//$stylist->set("#board", "width", ((sin($t) + 1) / 2 * 25) . 'em');
		//chunk("<!--".str_repeat("-",4096*1024)."-->"); // stress test
		$buf = '';
		while (socket_recv($socket, $buf, 65536, 0) != false) {
			if (MOVES[$buf]) {
				$game->move(MOVES[$buf]);
				if ($lost) {
					$stylist->set("#con", "display", "none");
					$stylist->set("#die", "display", "initial");
				}
				if ($won) {
					$stylist->set("#win", "display", "initial");
				}
			}
		}
		$tlab->draw(1 / $dt);
		$gamer->draw($dt);
		$scor->draw($score);
		$stylist->present();
		if (connection_aborted() || !$alive) {
			error_log("bye!");
			return;
		}
		if ($lost) {
			break;
		}
		usleep(floor(max($tt - $dt, 0)));
		//if(--$ii==0){ break; }
	}
	/*chunk(<<<Eof
		<meta http-equiv="refresh" content="0">

	*/
	chunk_end();
};
$path = explode('/', $_SERVER["REQUEST_URI"]);
$path = array_values(array_filter($path, function ($e) {
	return $e != '';
}));
$spath = implode('/', $path);
if ($spath == '') {
	echo <<<EOF
	<!DOCTYPE html>
	<head><title>2048</title></head>
	<h1>2048.php</h1>
	<p>An implementation of the popular puzzle game <a href="https://en.wikipedia.org/wiki/2048_(video_game)">2048</a>.</p>
	<p>As it relies heavily on progressive HTML rendering and advanced CSS features (e.g. <code>display: none</code>) it might not work in older web browsers.</p>
	<p><a href="play">Start game</a></p>
	EOF;
} else if ($spath == "play") {
	$quitf = function () {};
	try {
		game($quitf);
	} catch (\Throwable $e) {
		error_log($e);
	} finally {
		$quitf();
	}
} else {
	if ($path[0] == "play") {
		array_shift($path);
	}
	if ($path[0] != "act") {
		echo "404\n";
		return;
	}
	array_shift($path);
	if (count($path) < 2) {
		echo "bad\n";
		return;
	}
	$dir = DIR . hash("sha256", $path[0]);
	$socket = socket_create(AF_UNIX, SOCK_DGRAM, 0);
	socket_sendto($socket, $path[1], strlen($path[1]), 0, $dir);
}
server.php ASCII text
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#!/usr/bin/php
<?php
chdir(dirname(realpath($argv[0])));
$cwd = getcwd();
$host = "127.0.0.1";
$port = "4444";
if (count($argv) == 3) {
	$host = $argv[1];
	$port = $argv[2];
} elseif (count($argv) != 1) {
	error_log("invalid argument");
	exit(1);
}
$f = fopen("http.conf", "w");
fwrite($f, <<<Eof
server.document-root = "$cwd"
server.bind = "$host"
server.port = $port
server.stream-response-body = 2
server.modules += ( "mod_cgi", "mod_rewrite" )
url.rewrite-once = ( "^/(.*)" => "/" )
cgi.assign = (".php" => "/usr/bin/php-cgi")
index-file.names = ( "index.php" )
Eof);
fclose($f);
mkdir("tmp");
$httpd = getenv("LIGHTTPD") ?: "/usr/sbin/lighttpd";
system("$httpd -D -f ./http.conf");
webutil.php Unicode text, UTF-8 text
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<?php

function chunk_start() {
	global $chunking;
	if ($chunking) {
		throw new Exception("already chunking");
	}

	$chunking = true;
	if (ob_get_level() == 0) {
		ob_start();
	}

	header("Content-type: text/html; charset=utf-8");
	header("X-Content-Type-Options: nosniff");
	header("Transfer-encoding: chunked");
}

function chunk($str) {
	global $chunking;
	if (!$chunking) {
		throw new Exception("not chunking");
	}

	printf("%s\r\n", dechex(strlen($str)));
	printf("%s\r\n", $str);
	ob_flush();
	flush();
	if ($str == '') {
		$chunking = false;
		ob_end_flush();
	}
}

function chunk_end() {
	chunk("");
}

class DTimer {
	private $last;
	public function __construct() {
		$this->last = 0;
		$this->tick();
	}
	public function tick() {
		$cur = hrtime(true);
		$dt = $cur - $this->last;
		$this->last = $cur;
		return $dt / 1000_000_000;
	}
}
function appendf(&$s) {return function ($a) use (&$s) {$s .= $a;};}
function callf(&$f) {return function (...$a) use (&$f) {return $f(...$a);};}

class StyleMutator {
	private $current;
	private $dirty;
	private $write;
	public function __construct(Callable $write, ?StyleMutator $from = null) {
		if (isset($from)) {
			$this->current =  &$from->current;
			$this->dirty =  &$from->dirty;
		} else {
			$this->current = [];
			$this->dirty = [];
		}
		$this->write = $write;
	}
	public function set($i, $k, $v) {
		$this->dirty[$k][$i] = $v;
		if (isset($this->current[$k][$i]) && $this->current[$k][$i] == $v) {
			unset($this->dirty[$k][$i]);
		}
	}
	public function present() {
		$str = "<style>%s</style>\n";
		$byval = [];
		foreach ($this->dirty as $k => $l) {
			foreach ($l as $i => $v) {
				$byval[$k . ":" . $v][] = $i;
			}
		}
		foreach ($byval as $v => $l) {
			$byval[$v] = sprintf("%s{%s}", implode(',', $l), $v);
		}
		($this->write)(sprintf($str, implode('', $byval)));
		foreach ($this->dirty as $k => $l) {
			foreach ($l as $i => $v) {
				$this->current[$k][$i] = $v;
			}
		}
		$this->dirty = [];
		return true;
	}
}

const SI_BIGGER = [
	['k', 1000 ** 1],
	['M', 1000 ** 2],
	['G', 1000 ** 3],
	['T', 1000 ** 4],
	['P', 1000 ** 5],
	['E', 1000 ** 6],
	['Z', 1000 ** 7],
	['Y', 1000 ** 8],
	['R', 1000 ** 9],
	['Q', 1000 ** 10],
];
const SI_SMALLER = [
	['m', 1000 ** -1],
	['ΞΌ', 1000 ** -2],
	['n', 1000 ** -3],
	['p', 1000 ** -4],
	['a', 1000 ** -5],
	['z', 1000 ** -6],
	['y', 1000 ** -7],
	['r', 1000 ** -8],
	['q', 1000 ** -9],
];

function fnumfitweak($n, $m) {
	$dd = max($m - strlen(sprintf("%.0f", $n)) - 1, 0);
	$s = rtrim(sprintf("%.{$dd}f", $n), ".0");
	return $s == '' ? '0' : $s;
}

function fnumfit($n, $m) {
	$p = '';
	$s = fnumfitweak($n, $m);
	foreach (SI_SMALLER as [$vp, $vm]) {
		if (!($n > 0 && $s == 0)) {
			break;
		}
		$p = $vp;
		$s = fnumfitweak($n / $vm, $m - 1);
	}
	if ($p != '') {
		return [$s, $p];
	}
	foreach (SI_BIGGER as [$vp, $vm]) {
		if (strlen($s . $p) <= $m) {
			break;
		}
		$p = $vp;
		$s = fnumfitweak($n / $vm, $m - 1);
	}
	return [$s, $p];
}

class CursedNumber {
	private $stylist;
	private $maxlen;
	private $name;
	private const DIGITS = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, '.' => 's'];
	public function __construct( ? StyleMutator &$stylist = null, ?string $name = null,  ? Callable $write = null, int $maxlen = 5) {
		$this->stylist =  &$stylist;
		$this->maxlen = $maxlen;
		if (isset($stylist)) {
			if (!(isset($name) && isset($write))) {
				throw new Exception("invalid argument");
			}
			$this->name = $name;
			$str = "<span id=$name>";
			$state = "none";
			for ($i = 0; $i < $maxlen; $i++) {
				foreach (self::DIGITS as $v => $d) {
					$en = $this->elname('d', $i, $d);
					$str .= "<span id=$en>$v</span>";
					$this->stylist->set('#' . $en, "display", $state);
				}
			}
			foreach ([...SI_BIGGER, ...SI_SMALLER] as [$d, $v]) {
				$en = $this->elname('p', $d);
				$str .= "<span id=$en>$d</span>";
				$this->stylist->set('#' . $en, "display", $state);
			}
			$str .= "</span>";
			$write($str);
		}
	}
	private function elname($type, ...$l) {
		$name = $this->name;
		switch ($type) {
		case "d" :
			return "{$name}n{$l[0]}{$l[1]}";
		case "p" :
			return "{$name}p{$l[0]}";
		}
	}
	public function draw($n) {
		$n = fnumfit($n, $this->maxlen);
		for ($i = 0; $i < $this->maxlen; $i++) {
			foreach (self::DIGITS as $v => $d) {
				$en = $this->elname('d', $i, $d);
				$state = "none";
				if (isset($n[0][$i]) && $n[0][$i] == $v) {
					$state = "initial";
				}
				$this->stylist->set('#' . $en, "display", $state);
			}
		}
		foreach ([...SI_BIGGER, ...SI_SMALLER] as [$d, $v]) {
			$en = $this->elname('p', $d);
			$state = "none";
			if ($n[1] == $d) {
				$state = "initial";
			}
			$this->stylist->set('#' . $en, "display", $state);
		}
	}
}

entry #4

written by razetime
submitted at
3 likes

guesses
comments 0

post a comment


slide.puzzlescript ASCII text
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title 2048
author Friedrich Nietzsche
homepage www.puzzlescript.net

========
OBJECTS
========

Background
#bbada0

Empty
#bbada0

Two
#eee4da #776e65 #bbada0
20000
20000
20000
20010
22222

Four
#eee1c9 #776e65 #bbada0
20000
20000
20000
20100
22222

Eight
#f3b27a #f9f6f2 #bbada0
20000
20000
20000
21000
22222

Sixteen
#f69664 #f9f6f2 #bbada0
20000
20000
20001
20000
22222

ThirtyTwo
#f77c5f #f9f6f2 #bbada0
20000
20000
20010
20000
22222

SixtyFour
#f75f3b #f9f6f2 #bbada0
20000
20000
20100
20000
22222

OneTwoEight
#edcf72 #f9f6f2 #bbada0
20000
20000
21000
20000
22222

TwoFiveSix
#edcc61 #f9f6f2 #bbada0
20000
20001
20000
20000
22222

FiveOneTwo
#edc850 #f9f6f2 #bbada0
20000
20010
20000
20000
22222

OneZeroTwoFour
#edc53f #f9f6f2 #bbada0
20000
20100
20000
20000
22222

TwoZeroFourEight
#edc22e #f9f6f2 #bbada0
20000
21000
20000
20000
22222

=======
LEGEND
=======

. = Background
E = Empty
2 = Two
Spawn = Two or Four
Player = Two and Four and Eight and Sixteen and ThirtyTwo and SixtyFour and OneTwoEight and TwoFiveSix and FiveOneTwo and OneZeroTwoFour and TwoZeroFourEight

=======
SOUNDS
=======

================
COLLISIONLAYERS
================

Background
Empty
Two
Four
Eight
Sixteen
ThirtyTwo
SixtyFour
OneTwoEight
TwoFiveSix
FiveOneTwo
OneZeroTwoFour
TwoZeroFourEight


======
RULES
======

[ > Two | Empty ] -> [ Empty | > Two ]
[ > Four | Empty ] -> [ Empty | > Four ]
[ > Eight | Empty ] -> [ Empty | > Eight ]
[ > Sixteen | Empty ] -> [ Empty | > Sixteen ]
[ > ThirtyTwo | Empty ] -> [ Empty | > ThirtyTwo ]
[ > SixtyFour | Empty ] -> [ Empty | > SixtyFour ]
[ > OneTwoEight | Empty ] -> [ Empty | > OneTwoEight ]
[ > TwoFiveSix | Empty ] -> [ Empty | > TwoFiveSix ]
[ > FiveOneTwo | Empty ] -> [ Empty | > FiveOneTwo ]
[ > OneZeroTwoFour | Empty ] -> [ Empty | > OneZeroTwoFour ]
[ > TwoZeroFourEight | Empty ] -> [ Empty | > TwoZeroFourEight ]

[ > Two | Four ] -> [ Two | Four ]
[ > Two | Eight ] -> [ Two | Eight ]
[ > Two | Sixteen ] -> [ Two | Sixteen ]
[ > Two | ThirtyTwo ] -> [ Two | ThirtyTwo ]
[ > Two | SixtyFour ] -> [ Two | SixtyFour ]
[ > Two | OneTwoEight ] -> [ Two | OneTwoEight ]
[ > Two | TwoFiveSix ] -> [ Two | TwoFiveSix ]
[ > Two | FiveOneTwo ] -> [ Two | FiveOneTwo ]
[ > Two | OneZeroTwoFour ] -> [ Two | OneZeroTwoFour ]
[ > Two | TwoZeroFourEight ] -> [ Two | TwoZeroFourEight ]
[ > Four | Two ] -> [ Four | Two ]

[ > Four | Eight ] -> [ Four | Eight ]
[ > Four | Sixteen ] -> [ Four | Sixteen ]
[ > Four | ThirtyTwo ] -> [ Four | ThirtyTwo ]
[ > Four | SixtyFour ] -> [ Four | SixtyFour ]
[ > Four | OneTwoEight ] -> [ Four | OneTwoEight ]
[ > Four | TwoFiveSix ] -> [ Four | TwoFiveSix ]
[ > Four | FiveOneTwo ] -> [ Four | FiveOneTwo ]
[ > Four | OneZeroTwoFour ] -> [ Four | OneZeroTwoFour ]
[ > Four | TwoZeroFourEight ] -> [ Four | TwoZeroFourEight ]
[ > Eight | Two ] -> [ Eight | Two ]
[ > Eight | Four ] -> [ Eight | Four ]

[ > Eight | Sixteen ] -> [ Eight | Sixteen ]
[ > Eight | ThirtyTwo ] -> [ Eight | ThirtyTwo ]
[ > Eight | SixtyFour ] -> [ Eight | SixtyFour ]
[ > Eight | OneTwoEight ] -> [ Eight | OneTwoEight ]
[ > Eight | TwoFiveSix ] -> [ Eight | TwoFiveSix ]
[ > Eight | FiveOneTwo ] -> [ Eight | FiveOneTwo ]
[ > Eight | OneZeroTwoFour ] -> [ Eight | OneZeroTwoFour ]
[ > Eight | TwoZeroFourEight ] -> [ Eight | TwoZeroFourEight ]
[ > Sixteen | Two ] -> [ Sixteen | Two ]
[ > Sixteen | Four ] -> [ Sixteen | Four ]
[ > Sixteen | Eight ] -> [ Sixteen | Eight ]

[ > Sixteen | ThirtyTwo ] -> [ Sixteen | ThirtyTwo ]
[ > Sixteen | SixtyFour ] -> [ Sixteen | SixtyFour ]
[ > Sixteen | OneTwoEight ] -> [ Sixteen | OneTwoEight ]
[ > Sixteen | TwoFiveSix ] -> [ Sixteen | TwoFiveSix ]
[ > Sixteen | FiveOneTwo ] -> [ Sixteen | FiveOneTwo ]
[ > Sixteen | OneZeroTwoFour ] -> [ Sixteen | OneZeroTwoFour ]
[ > Sixteen | TwoZeroFourEight ] -> [ Sixteen | TwoZeroFourEight ]
[ > ThirtyTwo | Two ] -> [ ThirtyTwo | Two ]
[ > ThirtyTwo | Four ] -> [ ThirtyTwo | Four ]
[ > ThirtyTwo | Eight ] -> [ ThirtyTwo | Eight ]
[ > ThirtyTwo | Sixteen ] -> [ ThirtyTwo | Sixteen ]

[ > ThirtyTwo | SixtyFour ] -> [ ThirtyTwo | SixtyFour ]
[ > ThirtyTwo | OneTwoEight ] -> [ ThirtyTwo | OneTwoEight ]
[ > ThirtyTwo | TwoFiveSix ] -> [ ThirtyTwo | TwoFiveSix ]
[ > ThirtyTwo | FiveOneTwo ] -> [ ThirtyTwo | FiveOneTwo ]
[ > ThirtyTwo | OneZeroTwoFour ] -> [ ThirtyTwo | OneZeroTwoFour ]
[ > ThirtyTwo | TwoZeroFourEight ] -> [ ThirtyTwo | TwoZeroFourEight ]
[ > SixtyFour | Two ] -> [ SixtyFour | Two ]
[ > SixtyFour | Four ] -> [ SixtyFour | Four ]
[ > SixtyFour | Eight ] -> [ SixtyFour | Eight ]
[ > SixtyFour | Sixteen ] -> [ SixtyFour | Sixteen ]
[ > SixtyFour | ThirtyTwo ] -> [ SixtyFour | ThirtyTwo ]

[ > SixtyFour | OneTwoEight ] -> [ SixtyFour | OneTwoEight ]
[ > SixtyFour | TwoFiveSix ] -> [ SixtyFour | TwoFiveSix ]
[ > SixtyFour | FiveOneTwo ] -> [ SixtyFour | FiveOneTwo ]
[ > SixtyFour | OneZeroTwoFour ] -> [ SixtyFour | OneZeroTwoFour ]
[ > SixtyFour | TwoZeroFourEight ] -> [ SixtyFour | TwoZeroFourEight ]
[ > OneTwoEight | Two ] -> [ OneTwoEight | Two ]
[ > OneTwoEight | Four ] -> [ OneTwoEight | Four ]
[ > OneTwoEight | Eight ] -> [ OneTwoEight | Eight ]
[ > OneTwoEight | Sixteen ] -> [ OneTwoEight | Sixteen ]
[ > OneTwoEight | ThirtyTwo ] -> [ OneTwoEight | ThirtyTwo ]
[ > OneTwoEight | SixtyFour ] -> [ OneTwoEight | SixtyFour ]

[ > OneTwoEight | TwoFiveSix ] -> [ OneTwoEight | TwoFiveSix ]
[ > OneTwoEight | FiveOneTwo ] -> [ OneTwoEight | FiveOneTwo ]
[ > OneTwoEight | OneZeroTwoFour ] -> [ OneTwoEight | OneZeroTwoFour ]
[ > OneTwoEight | TwoZeroFourEight ] -> [ OneTwoEight | TwoZeroFourEight ]
[ > TwoFiveSix | Two ] -> [ TwoFiveSix | Two ]
[ > TwoFiveSix | Four ] -> [ TwoFiveSix | Four ]
[ > TwoFiveSix | Eight ] -> [ TwoFiveSix | Eight ]
[ > TwoFiveSix | Sixteen ] -> [ TwoFiveSix | Sixteen ]
[ > TwoFiveSix | ThirtyTwo ] -> [ TwoFiveSix | ThirtyTwo ]
[ > TwoFiveSix | SixtyFour ] -> [ TwoFiveSix | SixtyFour ]
[ > TwoFiveSix | OneTwoEight ] -> [ TwoFiveSix | OneTwoEight ]

[ > TwoFiveSix | FiveOneTwo ] -> [ TwoFiveSix | FiveOneTwo ]
[ > TwoFiveSix | OneZeroTwoFour ] -> [ TwoFiveSix | OneZeroTwoFour ]
[ > TwoFiveSix | TwoZeroFourEight ] -> [ TwoFiveSix | TwoZeroFourEight ]
[ > FiveOneTwo | Two ] -> [ FiveOneTwo | Two ]
[ > FiveOneTwo | Four ] -> [ FiveOneTwo | Four ]
[ > FiveOneTwo | Eight ] -> [ FiveOneTwo | Eight ]
[ > FiveOneTwo | Sixteen ] -> [ FiveOneTwo | Sixteen ]
[ > FiveOneTwo | ThirtyTwo ] -> [ FiveOneTwo | ThirtyTwo ]
[ > FiveOneTwo | SixtyFour ] -> [ FiveOneTwo | SixtyFour ]
[ > FiveOneTwo | OneTwoEight ] -> [ FiveOneTwo | OneTwoEight ]
[ > FiveOneTwo | TwoFiveSix ] -> [ FiveOneTwo | TwoFiveSix ]

[ > FiveOneTwo | OneZeroTwoFour ] -> [ FiveOneTwo | OneZeroTwoFour ]
[ > FiveOneTwo | TwoZeroFourEight ] -> [ FiveOneTwo | TwoZeroFourEight ]
[ > OneZeroTwoFour | Two ] -> [ OneZeroTwoFour | Two ]
[ > OneZeroTwoFour | Four ] -> [ OneZeroTwoFour | Four ]
[ > OneZeroTwoFour | Eight ] -> [ OneZeroTwoFour | Eight ]
[ > OneZeroTwoFour | Sixteen ] -> [ OneZeroTwoFour | Sixteen ]
[ > OneZeroTwoFour | ThirtyTwo ] -> [ OneZeroTwoFour | ThirtyTwo ]
[ > OneZeroTwoFour | SixtyFour ] -> [ OneZeroTwoFour | SixtyFour ]
[ > OneZeroTwoFour | OneTwoEight ] -> [ OneZeroTwoFour | OneTwoEight ]
[ > OneZeroTwoFour | TwoFiveSix ] -> [ OneZeroTwoFour | TwoFiveSix ]
[ > OneZeroTwoFour | FiveOneTwo ] -> [ OneZeroTwoFour | FiveOneTwo ]

[ > OneZeroTwoFour | TwoZeroFourEight ] -> [ OneZeroTwoFour | TwoZeroFourEight ]
[ > TwoZeroFourEight | Two ] -> [ TwoZeroFourEight | Two ]
[ > TwoZeroFourEight | Four ] -> [ TwoZeroFourEight | Four ]
[ > TwoZeroFourEight | Eight ] -> [ TwoZeroFourEight | Eight ]
[ > TwoZeroFourEight | Sixteen ] -> [ TwoZeroFourEight | Sixteen ]
[ > TwoZeroFourEight | ThirtyTwo ] -> [ TwoZeroFourEight | ThirtyTwo ]
[ > TwoZeroFourEight | SixtyFour ] -> [ TwoZeroFourEight | SixtyFour ]
[ > TwoZeroFourEight | OneTwoEight ] -> [ TwoZeroFourEight | OneTwoEight ]
[ > TwoZeroFourEight | TwoFiveSix ] -> [ TwoZeroFourEight | TwoFiveSix ]
[ > TwoZeroFourEight | FiveOneTwo ] -> [ TwoZeroFourEight | FiveOneTwo ]
[ > TwoZeroFourEight | OneZeroTwoFour ] -> [ TwoZeroFourEight | OneZeroTwoFour ]

[ > Two | Two ] -> [ Empty | Four ]
[ > Four | Four ] -> [ Empty | Eight ]
[ > Eight | Eight ] -> [ Empty | Sixteen ]
[ > Sixteen | Sixteen ] -> [ Empty | ThirtyTwo ]
[ > ThirtyTwo | ThirtyTwo ] -> [ Empty | SixtyFour ]
[ > SixtyFour | SixtyFour ] -> [ Empty | OneTwoEight ]
[ > OneTwoEight | OneTwoEight ] -> [ Empty | TwoFiveSix ]
[ > TwoFiveSix | TwoFiveSix ] -> [ Empty | FiveOneTwo ]
[ > FiveOneTwo | FiveOneTwo ] -> [ Empty | OneZeroTwoFour ]
[ > OneZeroTwoFour | OneZeroTwoFour ] -> [ Empty | TwoZeroFourEight ]


random [ Empty ] -> [ random Spawn ]

==============
WINCONDITIONS
==============
Some TwoZeroFourEight

=======
LEVELS
=======

2EEE
EEEE
EEEE
EEEE

entry #5

written by olus2000
submitted at
0 likes

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2048.lua ASCII text
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l=(function()end)w=(function(st)for i=1,(16)do(l)()if(st[i]==
2              *              2              *              2
* 2*256)then(l ) (5)return(12 ) end(l)(6)end l ()return(l)( 1
) end)l("B")o= ( function(s)l ( )for i=1,(16 ) do(l)()if(l) (
) or(not(s[i]) ) then;return( l (false));end ( l)({5,})if(i %
4 ~=0)and(s[i+ 1 -1]==s[i+2-1 ] )then(l)("D" ) return(l)("c "
) elseif(s[i+1 - 1]==s[i+2+2] ) then(l)(9+10 ) return(((l)( )
) )end(l)()end l ()return(556 ) end)function a (s)n=(94627* 0
) +math.random ( 16)if(s[n]or l ())then(a)(s ) else(s)[n]=( 0
*              2              +              0              +
math.random(4)//4*2+2)end(l)()return(s)end(l)()f=(function(s,
m              )              l              (              1
) if(m=="w"and 4 )then(l)()t= { }for x=0,(3. ) do(l)(21)for y
= 0,(3)do(t)[4 * x+y+1]=s[4*y + x+1]end(l)(0 ) end(l)("smig "
) return(t)end l ()if(m==("s" ) )then(l)("s" ) return(f((f( (
s ),"w")),"d") ) elseif((((m) ) =="d"))then( l )()t=({})for x
= 1,(16)do(t)[ x ]=s[17-x]end ; l("2")return ( t)end;return (
( table.move(s , 1,16,1,{}))) ; end)function b (c);l()local x
, s={}l(69)for i =1,(4)do;if( c [i])then;if( c [i]==s)then( l
)              (              -              4              )
table.insert(x,s*2)s=l()else;table.insert(x,s)s=(c[i])end;end
;              l              (              -              1
) end;l("upi") ; table.insert ( x,s)return(x ) end;function g
( s)l("d!")for i =1,16,(4)do; ; table.move(b ( table.move(s ,
i ,i+3,1,{})), 1 ,4,i,s)end(l ) ()return((s) ) end;function d
( _,s)if(o((s) ) )then(l)(426 ) io.write(j,e , "lost!\n")l( 4
) return;end;l ( )if(w(s)and{ } )then(l)()io . write(j,e,p) ;
; return;end;m = ""while(not( ( l()or(m:find ( ("[wasd]"))) )
) )do;l(5)m=io . read(15+-14) : lower()end;t = f(g(f(s,m)), m
)              l              (              9              )
for i=1,(16)do;if(t[i]~=s[i])then;return(a(t))end;end;return(
s              )              ,              6              ,
1 end;j="You"; p ="won!\n"e=" " q=function() ; l();A(r);l(- 2
) return(u(a(a ( {}))))end;l( ) v=(function( ) return(d),l( )
, (q())end);u= ( function(s); ; for x=1,16,( 4 )do;A(z);for y
= 0,(3)do;if(s [ x+y]and(s[x+ y ]//(100)>-0) ) then;l(32)A( B
: format(s[x+y ] //100))else; A ("|",e,e)end ; end;A("|\n") ;
; for y=0,3 do ; if(s[x+y+-0] ) then;l(g)A(B : format(s[x+y ]
% 100))else;;A ( "|",e,e)end; ; end;A("|\n") ; end;l("dummy "
)              A              (              z              )
return(s)end)r="Move by inputting WASD\n"z="+--+--+--+--+\n"e



=" "B="|%2d"A=(io.write)entry=function()for i in v() do;u(i);
end                                                       end

entry #6

written by indigo (away until 9/26)
submitted at
3 likes

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comments 0

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main.go ASCII text, with CRLF line terminators
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package main

import (
	"cmp"
	"image/color"
	"log"
	"math"
	"math/rand"
	"slices"
	"strconv"

	"golang.org/x/image/font"
	"golang.org/x/image/font/opentype"

	"github.com/hajimehoshi/ebiten/v2"
	"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
	"github.com/hajimehoshi/ebiten/v2/inpututil"
	"github.com/hajimehoshi/ebiten/v2/text"
)

var (
	tileImage *ebiten.Image
	tileFont  font.Face
)

const (
	fontSize              = 48
	innerTileSize         = 90
	tileSize              = 100
	tileSpeed     float64 = 1

	tilePadding = (tileSize - innerTileSize) / 2
)

type Direction int

const (
	DirectionNone Direction = iota
	DirectionLeft
	DirectionRight
	DirectionUp
	DirectionDown
)

type Tile struct {
	screenPos struct{ x, y float64 }
	value     int
	hasMerged bool
}

type Game struct {
	tiles  [4][4]Tile
	isLoss bool

	pressedKeys []ebiten.Key
}

func init() {
	ttf, err := opentype.Parse(fonts.MPlus1pRegular_ttf)

	if err != nil {
		log.Fatal(err)
	}

	tileFont, err = opentype.NewFace(ttf, &opentype.FaceOptions{
		DPI:     72,
		Size:    fontSize,
		Hinting: font.HintingVertical,
	})

	if err != nil {
		log.Fatal(err)
	}

	tileImage = ebiten.NewImage(innerTileSize, innerTileSize)
}

func (g *Game) updateLoss() {
	copy := *g
	g.isLoss = !(copy.stepTiles(DirectionLeft) ||
		copy.stepTiles(DirectionRight) ||
		copy.stepTiles(DirectionUp) ||
		copy.stepTiles(DirectionDown))
}

func (g *Game) IsFull() bool {
	for _, row := range g.tiles {
		for _, tile := range row {
			if tile.value == 0 {
				return false
			}
		}
	}
	return true
}

func (g *Game) SpawnTile() {
	if g.IsFull() {
		g.isLoss = true
		return
	}

	x := rand.Intn(len(g.tiles))
	y := rand.Intn(len(g.tiles[x]))

	for g.tiles[y][x].value != 0 {
		x = rand.Intn(len(g.tiles))
		y = rand.Intn(len(g.tiles[x]))
	}
	if rand.Intn(10) == 0 {
		g.tiles[y][x].value = 4
	} else {
		g.tiles[y][x].value = 2
	}
}

func (g *Game) stepTiles(direction Direction) (hasChanged bool) {
	switch direction {
	case DirectionLeft:
		for y := range g.tiles {
			for x := 1; x < len(g.tiles[y]); x++ {
				if g.tiles[y][x-1].value == 0 {
					g.tiles[y][x-1] = g.tiles[y][x]
					g.tiles[y][x] = Tile{}
					hasChanged = true
				} else if g.tiles[y][x-1].value == g.tiles[y][x].value && !g.tiles[y][x-1].hasMerged && !g.tiles[y][x].hasMerged {
					g.tiles[y][x-1].value *= 2
					g.tiles[y][x-1].hasMerged = true
					g.tiles[y][x] = Tile{}
					hasChanged = true
				}
			}
		}
	case DirectionRight:
		for y := range g.tiles {
			for x := len(g.tiles[y]) - 2; x >= 0; x-- {
				if g.tiles[y][x+1].value == 0 {
					g.tiles[y][x+1] = g.tiles[y][x]
					g.tiles[y][x] = Tile{}
					hasChanged = true
				} else if g.tiles[y][x+1].value == g.tiles[y][x].value && !g.tiles[y][x+1].hasMerged && !g.tiles[y][x].hasMerged {
					g.tiles[y][x+1].value *= 2
					g.tiles[y][x+1].hasMerged = true
					g.tiles[y][x] = Tile{}
					hasChanged = true
				}
			}
		}
	case DirectionUp:
		for y := 1; y < len(g.tiles); y++ {
			for x := range g.tiles[y] {
				if g.tiles[y-1][x].value == 0 {
					g.tiles[y-1][x] = g.tiles[y][x]
					g.tiles[y][x] = Tile{}
					hasChanged = true
				} else if g.tiles[y-1][x].value == g.tiles[y][x].value && !g.tiles[y-1][x].hasMerged && !g.tiles[y][x].hasMerged {
					g.tiles[y-1][x].value *= 2
					g.tiles[y-1][x].hasMerged = true
					g.tiles[y][x] = Tile{}
					hasChanged = true
				}
			}
		}
	case DirectionDown:
		for y := len(g.tiles) - 2; y >= 0; y-- {
			for x := range g.tiles[y] {
				if g.tiles[y+1][x].value == 0 {
					g.tiles[y+1][x] = g.tiles[y][x]
					g.tiles[y][x] = Tile{}
					hasChanged = true
				} else if g.tiles[y+1][x].value == g.tiles[y][x].value && !g.tiles[y+1][x].hasMerged && !g.tiles[y][x].hasMerged {
					g.tiles[y+1][x].value *= 2
					g.tiles[y+1][x].hasMerged = true
					g.tiles[y][x] = Tile{}
					hasChanged = true
				}
			}
		}
	}

	return
}

func (g *Game) MoveTiles(direction Direction) {
	for y := range g.tiles {
		for x := range g.tiles[y] {
			g.tiles[y][x].hasMerged = false
		}
	}

	for {
		old := g.tiles
		g.stepTiles(direction)
		if slices.Equal(g.tiles[:], old[:]) {
			break
		}
	}
}

func (g *Game) Animate() {
	for y, row := range g.tiles {
		for x := range row {
			var targetX = float64(x*tileSize + tilePadding)
			var targetY = float64(y*tileSize + tilePadding)
			g.tiles[y][x].screenPos.x += float64(cmp.Compare(targetX, g.tiles[y][x].screenPos.x)) * tileSpeed
			g.tiles[y][x].screenPos.y += float64(cmp.Compare(targetY, g.tiles[y][x].screenPos.y)) * tileSpeed
		}
	}
}

func (g *Game) Update() error {
	g.Animate()
	g.pressedKeys = inpututil.AppendJustPressedKeys(g.pressedKeys[:0])

	var direction Direction = DirectionNone

Loop:
	for _, key := range g.pressedKeys {
		switch key {
		case ebiten.KeyLeft:
			direction = DirectionLeft
			break Loop

		case ebiten.KeyRight:
			direction = DirectionRight
			break Loop

		case ebiten.KeyUp:
			direction = DirectionUp
			break Loop

		case ebiten.KeyDown:
			direction = DirectionDown
			break Loop
		}
	}

	if direction != DirectionNone {
		old := g.tiles
		g.MoveTiles(direction)
		if !slices.Equal(g.tiles[:], old[:]) {
			g.SpawnTile()
		}
		g.updateLoss()
	}

	return nil
}

func (g *Game) Draw(screen *ebiten.Image) {
	for _, row := range g.tiles {
		for _, tile := range row {
			drawOptions := ebiten.DrawImageOptions{}
			drawOptions.GeoM.Translate(tile.screenPos.x, tile.screenPos.y)

			tileImage.Fill(color.RGBA{R: uint8(50 * math.Log2(float64(tile.value))), G: 0, B: 0, A: 255})

			if tile.value != 0 {
				str := strconv.Itoa(tile.value)
				textBound := text.BoundString(tileFont, str)

				text.Draw(
					tileImage,
					str,
					tileFont,
					innerTileSize/2-textBound.Dx()/2,
					innerTileSize/2+textBound.Dy()/2,
					color.White,
				)
			}

			screen.DrawImage(tileImage, &drawOptions)
		}
	}

	if g.isLoss {
		str := "You lost"
		textBound := text.BoundString(tileFont, str)
		text.Draw(
			screen,
			str,
			tileFont,
			screen.Bounds().Dx()/2-textBound.Dx()/2,
			screen.Bounds().Dy()/2+textBound.Dy()/2,
			color.White,
		)
	}
}

func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
	return 4 * tileSize, 4 * tileSize
}

func main() {
	ebiten.SetWindowSize(640, 640)
	ebiten.SetWindowTitle("Hello, World!")

	game := Game{}
	game.SpawnTile()

	if err := ebiten.RunGame(&game); err != nil {
		log.Fatal(err)
	}
}

entry #7

written by Olivia
submitted at
5 likes

guesses
comments 0

post a comment


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#!/usr/bin/env -S cargo +nightly -Zscript
//! ```cargo
//! [package]
//! edition = "2021"
//! authors = [ "RocketRace <oliviaspalmu@gmail.com>" ]
//! description = "The game of 2048 for the Esolangs Code Guessing round 42"
//! 
//! [dependencies]
//! rand = "0.8.5"
//! ti = { version = "1.2", git = "https://github.com/RocketRace/ti.git", features = ["images"] }
//! ```
use ::{std::ops::{Index, IndexMut}, rand::{seq::IteratorRandom, thread_rng}, ti::{color::Color, event::{Direction, Event}, screen::{Blit, Screen}, sprite::{Atlas, ColorMode, Sprite}}};

#[derive(Clone, Copy, PartialEq, Default)]
struct Cell {
    value: u8,
    offset: (i16, i16),
    intention: (i16, i16),
    speed: i16
}
impl Cell {
    fn new(value: u8) -> Self {
        Cell { value, ..Default::default() }
    }
}
#[derive(Default, PartialEq, Clone, Copy)]
struct Grid([[Option<Cell>; 4]; 4]);
type Slides = Vec<(u16, u16)>;

impl Index<u16> for Grid {
    type Output = Option<Cell>;
    fn index(&self, index: u16) -> &Self::Output {
        &self.0[index as usize / 4][index as usize % 4]
    }
}
impl IndexMut<u16> for Grid {
    fn index_mut(&mut self, index: u16) -> &mut Self::Output {
        &mut self.0[index as usize / 4][index as usize % 4]
    }
}
impl Grid {
    fn iter(&self) -> impl Iterator<Item = &Cell> {
        self.0.iter().flatten().flatten()
    }
    fn iter_mut(&mut self) -> impl Iterator<Item = &mut Cell> {
        self.0.iter_mut().flatten().flatten()
    }
    fn spawn_food(&mut self) -> Option<()> {
        (0..16)
            .filter(|&i| self[i].is_none())
            .choose(&mut thread_rng())
            .map(|i| self[i] = Some(Cell::new(if rand::random::<f64>() < 0.9 { 1 } else { 2 })))
    }
    fn gravity(&mut self, direction: Direction) -> Option<(Slides, Grid, u32)> {
        let vertical   = [[0, 4, 8, 12], [1, 5, 9, 13], [2, 6, 10, 14], [3,  7,  11, 15]];
        let horizontal = [[0, 1, 2, 3 ], [4, 5, 6, 7 ], [8, 9, 10, 11], [12, 13, 14, 15]];
        let slices = match direction {
            Direction::Right => horizontal.map(reversed),
            Direction::Left  => horizontal,
            Direction::Up    => vertical,
            Direction::Down  => vertical.map(reversed),
        };
    
        let mut buf = Grid::default();
        let mut sliders = vec![(0, 0); 16];
        let mut scored = 0;
        for slice in slices {
            let mut dst = 0;
            for src in 0..4 {
                match (self[slice[src]], buf[slice[dst]]) {
                    (None, _) => (),
                    (Some(n), None) => {
                        buf[slice[dst]] = Some(n);
                        sliders.push((slice[src], (src - dst) as u16));
                    }
                    (Some(n), Some(m)) => {
                        if n.value == m.value {
                            buf[slice[dst]] = Some(Cell::new(n.value + 1));
                            sliders.push((slice[src], (src - dst) as u16));
                            scored += 1 << (n.value + 1);
                        } else {
                            // this can never panic: dst <= src && this match arm is only
                            // possible after executing the previous arm once => dst < 3
                            buf[slice[dst + 1]] = Some(n);
                            sliders.push((slice[src], (src - dst - 1) as u16));
                        }
                        dst += 1;
                    }
                }
            }
        }
        if *self != buf { Some((sliders, buf, scored)) } else { None }
    }
}


fn draw_borders(screen: &mut Screen, offset_x: u16, offset_y: u16, color: Color) {
    screen.draw_sprite(&Sprite::rectangle(18, 18, Some(color), 0), offset_x, offset_y, Blit::Set);
    screen.draw_sprite(&Sprite::rectangle(16, 16, None, 0), offset_x + 1, offset_y + 1, Blit::Subtract);
}

fn draw_cells(screen: &mut Screen, grid: Grid, sprites: &[Sprite], offset_x: u16, offset_y: u16) {
    (0..16).for_each(|i| {
        let (x, y) = (i % 4, i / 4);
        let rgb = (0..=5).choose_multiple(&mut thread_rng(), 3);
        let fuzzy = Sprite::rectangle(4, 4, Some(Color::from_ansi_components(rgb[0], rgb[1], rgb[2])), 1);
        if let Some(Cell {value, offset, .. }) = grid[i] {
            let sprite = sprites.get(value as usize - 1).unwrap_or(&fuzzy);
            screen.draw_sprite(sprite, (x * 4 + offset_x).wrapping_add_signed(offset.0), (y * 4 + offset_y).wrapping_add_signed(offset.1), Blit::Set);
        }
    })
}

fn draw_score(screen: &mut Screen, score: u32, offset_x: u16, offset_y: u16, color: Color) {
    for i in 2..32 {
        screen.draw_pixel_colored(offset_x + i % 2, offset_y + i / 2, if score & (1 << i) != 0 { Blit::Add } else { Blit::Subtract}, Some(color));
    }
}

fn reversed<const N: usize, T>(array: [T; N]) -> [T; N] {
    let mut copy = array;
    copy.reverse();
    copy
}

struct Game {
    grid: Grid,
    next_grid: Grid,
    sliding: bool,
    over: bool,
    won: bool,
    score: u32,
    grid_pos: (u16, u16),
    score_pos: (u16, u16)
}

impl Game {
    fn new(grid_pos: (u16, u16), score_pos: (u16, u16)) -> Self {
        let mut this = Game {
            grid: Grid::default(),
            next_grid: Grid::default(),
            sliding: false,
            over: false,
            won: false,
            score: 0,
            grid_pos,
            score_pos
        };
        this.grid.spawn_food();
        this
    }
    fn tick(&mut self, screen: &mut Screen, event: Option<Event>, best: &mut u32, breath: u8, sprites: &[Sprite]) {
        if !self.sliding {
            if let Some(event) = event {
                if let Some(dir) = event.direction_wasd() {
                    if let Some((sliders, new_grid, scored)) = self.grid.gravity(dir) {
                        self.sliding = true;
                        self.score += scored;
                        *best = (*best).max(self.score);
                        self.next_grid = new_grid;
                        for (slider, cells) in sliders {
                            if let Some(c) = self.grid[slider].as_mut() {
                                let dist = cells as i16 * 4;
                                c.speed = cells as i16;
                                c.intention = match dir {
                                    Direction::Up    => (0, -dist),
                                    Direction::Down  => (0,  dist),
                                    Direction::Right => ( dist, 0),
                                    Direction::Left  => (-dist, 0),
                                };
                            };
                        }
                        if !self.won && self.grid.iter().any(|c| c.value >= 11) {
                            // 2^11 = 2048
                            self.won = true;
                        }
                    }
                    else if !self.over && [Direction::Up, Direction::Down, Direction::Right, Direction::Left].into_iter().all(|dir| self.grid.clone().gravity(dir).is_none()) {
                        self.over = true;
                    }
                } else if let Event::Char('r') = event {
                    self.grid = Grid::default();
                    self.grid.spawn_food();
                    self.grid.spawn_food();
                    self.over = false;
                    self.score = 0;
                }
            }
        }
        else if self.grid.iter_mut().fold(true, |equal, cell| {
            if cell.offset != cell.intention { 
                cell.offset.0 += cell.intention.0.signum() * cell.speed;
                cell.offset.1 += cell.intention.1.signum() * cell.speed;
            }
            equal && cell.offset == cell.intention
        }) {
            self.sliding = false;
            self.grid = self.next_grid;
            self.grid.iter_mut().for_each(|cell| *cell = Cell { value: cell.value, ..Default::default() });
            self.grid.spawn_food();
        }
        
        let playing_color = Color::from_ansi_greyscale(breath / 4 + 6);
        let c = breath * 3 + 112;
        let lost_color    = Color::from_rgb_approximate(c,  64, 64);
        let won_color     = Color::from_rgb_approximate(64, c,  64);
        let score_color   = Color::from_rgb_approximate(c,  64, c );
        let record_color  = Color::from_rgb_approximate(c,  c,  64);
        let border_color = if self.over { if self.won { won_color } else { lost_color }} else { playing_color };
        draw_borders(screen, self.grid_pos.0, self.grid_pos.1, border_color);
        draw_cells(screen, self.grid, sprites, self.grid_pos.0 + 1, self.grid_pos.1 + 1);
        draw_score(screen, self.score, self.score_pos.0, self.score_pos.1, if self.score == *best { record_color } else { score_color });
    }
}

fn main() {
    let mut screen = Screen::new_pixels(54, 24);
    let sprites = Atlas::open("atlas.png", ColorMode::Rgb, true).map(|atlas| (0..16).map(|i| atlas.sprite(i % 4 * 4, i / 4 * 4, 4, 4, 1, 1)).collect::<Vec<Sprite>>()).expect("sprite error");
    
    let mut game = Game::new((1, 3), (22, 4));
    let mut redo = false;
    let mut p2 = Game::new((35, 3), (30, 4));
    let mut best = 0;

    let mut inhaling = true;
    let mut breath = 0;

    screen
        .start_loop(60, |screen, event| {
            if let Some(Event::Char('y')) = event {
                redo = true;
            }
            if inhaling {
                breath += 1; if breath == 47 { inhaling = false; }
            } else {
                breath -= 1; if breath == 0  { inhaling = true;  }
            }
            game.tick(screen, event, &mut best, breath, &sprites);
            if redo {
                p2.tick(screen, event, &mut best, breath, &sprites);
            }
            let best_color = Color::from_rgb_approximate(64, breath * 3 + 112, 64);
            draw_score(screen, best, 26, 4, best_color);
            Ok(())
        })
        .unwrap()
}
atlas.png PNG image data, 16 x 16, 8-bit/color RGBA, non-interlaced
demo.mp4 ISO Media, MP4 Base Media v1 [ISO 14496-12:2003]
instructions ASCII text
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slide: arrows/WASD
retry: R
exit: ^C
there is no undo feature, it's cheating
redo: Y

use a font with proper braille (example in the RocketRace/ti repository)

entry #8

written by olive
submitted at
1 like

guesses
comments 0

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main.lua ASCII text, with CRLF line terminators
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local floor, ceil = math.floor, math.ceil
local min, max = math.min, math.max

local lg = love.graphics
lg.setColour, lg.setColor = lg.setColor, nil

math.randomseed(os.time())
love.window.setMode(600, 600, { resizable = true })
lg.setFont(lg.newFont(12))

local width, height = 4, 4
local grid = {}

local colours = {
	[ 1] = { 11/11, 11/11, 11/11 },
	[ 2] = { 10/11, 10/11, 10/11 },
	[ 3] = {  9/11,  9/11,  9/11 },
	[ 4] = {  8/11,  8/11,  8/11 },
	[ 5] = {  7/11,  7/11,  7/11 },
	[ 6] = {  6/11,  6/11,  6/11 },
	[ 7] = {  5/11,  5/11,  5/11 },
	[ 8] = {  4/11,  4/11,  4/11 },
	[ 9] = {  3/11,  3/11,  3/11 },
	[10] = {  2/11,  2/11,  2/11 },
	[11] = {  1/11,  1/11,  1/11 },
}
assert(2^11 == 2048)

local function addrandomly()
	local value = math.random(1,2)
	local index repeat
		index = math.random(0,width*height-1)
	until not grid[index]
	grid[index] = value
end

local state = "begin"

local function getr()
	local t = love.timer.getTime()
	local w, h = lg.getDimensions()
	local r = min(w,h)
	local pad = min(60, r*0.1)*(0.98 + 0.2 * math.sin(t/8*math.pi*2))
	local xshif = max(0,floor((w-h)/2))
	local yshif = max(0,floor((h-w)/2))
	return r-pad*2, pad, xshif, yshif
end

local function perr(x,y)
	local r, pad, xshif, yshif = getr()
	x = (x - pad - xshif) / r
	y = (y - pad - yshif) / r
	return x, y
end

local drawers = {
	begin = function()
		lg.setColour(0.80, 0.90, 0.80)
		lg.rectangle("fill", 0,0, 1,1)
	end,
	playing = function()
		local tp = love.timer.getTime()*math.pi*2
		lg.setColour(0.85, 0.85, 0.85+0.05*math.sin(tp/5))
		lg.rectangle("fill", 0,0, 1,1)
		for x = 0, width-1 do
			for y = 0, height-1 do
				local v = grid[x+y*width]
				if v then
					lg.setColour(colours[v])
					lg.rectangle("fill", x*0.25+0.01, y*0.25+0.01, 0.23, 0.23)
					lg.setColour(0,0,0)
					for i = 1, v do
						lg.circle("fill", x*0.25+0.01+0.04*i, y*0.25+0.01+0.04, 0.02)
					end
				end
			end
		end
	end,
	over = function()
		lg.setColour(0.90, 0.80, 0.80)
		lg.rectangle("fill", 0,0, 1,1)
	end,
}

local clickers = {
	begin = function(x,y)
		state = "playing"
		addrandomly()
		addrandomly()
	end,
	playing = function(x,y)
	end,
	over = function(x,y)
		state = "begin"
	end,
}

local keybers = {
	begin = function()
	end,
	playing = function(key)
		
		-- I am ashamed
		
		if key == "left" then
			for y = 0, 3 do
				for x = 1, 3 do
					if grid[x+y*width] then
						for xx = x-1, 0, -1 do
							if not grid[xx+y*width] then
								grid[xx+y*width] = grid[(xx+1)+y*width]
								grid[(xx+1)+y*width] = nil
							elseif grid[xx+y*width] == grid[(xx+1)+y*width] then
								grid[xx+y*width] = grid[xx+y*width] + 1
								grid[(xx+1)+y*width] = nil
								break
							else
								break
							end
						end
					end
				end
			end
		elseif key == "right" then
			for y = 0, 3 do
				for x = 2, 0, -1 do
					if grid[x+y*width] then
						for xx = x+1, 3 do
							if not grid[xx+y*width] then
								grid[xx+y*width] = grid[(xx-1)+y*width]
								grid[(xx-1)+y*width] = nil
							elseif grid[xx+y*width] == grid[(xx-1)+y*width] then
								grid[xx+y*width] = grid[xx+y*width] + 1
								grid[(xx-1)+y*width] = nil
								break
							else
								break
							end
						end
					end
				end
			end
		elseif key == "up" then
			for x = 0, 3 do
				for y = 1, 3 do
					if grid[x+y*width] then
						for yy = y-1, 0, -1 do
							if not grid[x+yy*width] then
								grid[x+yy*width] = grid[x+(yy+1)*width]
								grid[x+(yy+1)*width] = nil
							elseif grid[x+yy*width] == grid[x+(yy+1)*width] then
								grid[x+yy*width] = grid[x+yy*width] + 1
								grid[x+(yy+1)*width] = nil
								break
							else
								break
							end
						end
					end
				end
			end
		elseif key == "down" then
			for x = 0, 3 do
				for y = 2, 0, -1 do
					if grid[x+y*width] then
						for yy = y+1, 3 do
							if not grid[x+yy*width] then
								grid[x+yy*width] = grid[x+(yy-1)*width]
								grid[x+(yy-1)*width] = nil
							elseif grid[x+yy*width] == grid[x+(yy-1)*width] then
								grid[x+yy*width] = grid[x+yy*width] + 1
								grid[x+(yy-1)*width] = nil
								break
							else
								break
							end
						end
					end
				end
			end
		end

		addrandomly()

		local filled = 0
		for i = 0, width*height-1 do
			if grid[i] == 11 then
				state = over
			elseif grid[i] then
				filled = filled + 1
			end
		end
		if filled == width*height then
			state = over
		end
	end,
	over = function()
	end,
}

function love.draw()
	lg.clear(1,1,1)
	do
		local r, pad, xshif, yshif = getr()
		lg.translate(pad, pad)
		lg.translate(xshif, yshif)
		lg.scale(r)
	end

	drawers[state]()
end

function love.mousepressed(x,y)
	clickers[state](perr(x,y))
end

function love.keypressed(key, scancode)
	keybers[state](key, scancode)
end

entry #9

written by ultlang
submitted at
5 likes

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comments 0

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cg.sb3 Zip archive data, at least v1.0 to extract, compression method=deflate

entry #10

written by JJRubes
submitted at
3 likes

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comments 0

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2048.c ASCII text, with very long lines (302)
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#define _ -1
int board[16] = {
//  +-------+-------+-------+-------+
//  |       |       |       |       |
         -1 ,    -1 ,    -1 ,    -1 ,
//  |       |       |       |       |
//  +-------+-------+-------+-------+
//  |       |       |       |       |
         -1 ,    -1 ,    -1 ,     2 ,
//  |       |       |       |       |
//  +-------+-------+-------+-------+
//  |       |       |       |       |
         -1 ,     2 ,    -1 ,    -1 ,
//  |       |       |       |       |
//  +-------+-------+-------+-------+
//  |       |       |       |       |
         -1 ,    -1 ,    -1 ,    -1 ,
//  |       |       |       |       |
//  +-------+-------+-------+-------+
};

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#ifdef NEW_GAME
#define val(i, j) board[i * 4 + (0 + j)]
#endif
#ifdef LEFT
#define val(i, j) board[i * 4 + (0 + j)]
#endif
#ifdef RIGHT
#define val(i, j) board[i * 4 + (3 - j)]
#endif
#ifdef DOWN
#define val(i, j) board[i + (3 - j) * 4]
#endif
#ifdef UP
#define val(i, j) board[i + (0 + j) * 4]
#endif
#define s(x) #x
#define S(x) #x " " s(x)

#define AA "#define "
#define AB "//  |       |       |       |       |\n"
#define AC "//  +-------+-------+-------+-------+\n"
#define AD int gameOver() {
#define AE for(int i = 0; i < 4; i++) {
#define AF int prevRow = -1; int prevCol = -1;
#define AG for(int j = 0; j < 4; j++) {
#define AL } } return 1; }

#define AM void addRandom() {
#define AN while(1) { int index = rand() % 16;
#define AO if(board[index] == -1) {
#define AP board[index] = rand() % 100 < 90 ? 2 : 4;
#define AQ return; } } }

#define AR int move() {
#define AS int changed = 0;
#define AT for(int i = 0; i < 4; i++) {
#define AU int k = 0;
#define AV for(int j = 1; j < 4; j++) {
#define BD } else { k++;
#define BG } } } } return changed; }

#define BH void newGame() {
#define BI for(int i = 0; i < 16; i++) {
#define BJ board[i] = -1;
#define BK } addRandom(); addRandom(); }

#define BL int main() {
#define BM "//  +------ *** Game Over *** ------+\n"
#define BN char* mid = (gameOver() ? "//  +------ *** Game Over *** ------+\n" : "//  +-------+-------+-------+-------+\n");
#define BO newGame();
#define BP srand(time(((void *)0)));
#define BQ if(move()) addRandom();
#define BR ,
#define BS "%1$s%2$s\nint board[16] = {\n%3$s%4$s%5$11d ,%6$6d ,%7$6d ,%8$6d ,\n"
#define BT "%4$s%3$s%4$s%9$11d ,%10$6d ,%11$6d ,%12$6d ,\n%4$s%3$s%4$s%13$11d ,%14$6d ,%15$6d ,%16$6d ,\n"
#define BU "%4$s%3$s%4$s%17$11d ,%18$6d ,%19$6d ,%20$6d ,\n%4$s%3$s};\n\n"
#define BV "#include <stdio.h>\n#include <stdlib.h>\n#include <string.h>\n#include <time.h>\n"
#define BW "#ifdef NEW_GAME\n#define val(i, j) board[i * 4 + (0 + j)]\n#endif\n"
#define BX "#ifdef LEFT\n#define val(i, j) board[i * 4 + (0 + j)]\n#endif\n"
#define BY "#ifdef RIGHT\n#define val(i, j) board[i * 4 + (3 - j)]\n#endif\n"
#define BZ "#ifdef DOWN\n#define val(i, j) board[i + (3 - j) * 4]\n#endif\n"
#define CA "#ifdef UP\n#define val(i, j) board[i + (0 + j) * 4]\n#endif\n"
#define CB "#define s(x) #x\n#define S(x) #x \" \" s(x)\n\n"
#define CC "%1$s%21$s\n%1$s%22$s\n%1$s%23$s\n%1$s%24$s\n%1$s%25$s\n%1$s%26$s\n"
#define CD "%1$s%27$s\n%1$s%28$s\n\n%1$s%29$s\n%1$s%30$s\n%1$s%31$s\n%1$s%32$s\n"
#define CE "%1$s%33$s\n\n%1$s%34$s\n%1$s%35$s\n%1$s%36$s\n%1$s%37$s\n%1$s%38$s\n"
#define CF "%1$s%39$s\n%1$s%40$s\n\n%1$s%41$s\n%1$s%42$s\n%1$s%43$s\n%1$s%44$s\n\n"
#define CG "%1$s%45$s\n%1$s%46$s\n%1$s%47$s\n%1$s%48$s\n%1$s%49$s\n%1$s%50$s\n#define BR ,\n"
#define CH "%1$s%51$s\n%1$s%52$s\n%1$s%53$s\n%1$s%54$s\n%1$s%55$s\n%1$s%56$s\n"
#define CI "%1$s%57$s\n%1$s%58$s\n%1$s%59$s\n%1$s%60$s\n%1$s%61$s\n"
#define CJ "%1$s%62$s\n%1$s%63$s\n%1$s%64$s\n%1$s%65$s\n%1$s%66$s\n%1$s%67$s\n"
#define CK "%1$s%68$s\n%1$s%69$s\n%1$s%70$s\n%1$s%71$s\n%1$s%72$s\n%1$s%73$s\n"
#define CL "%1$s%74$s\n%1$s%75$s\n%1$s%76$s\n%1$s%77$s\n%1$s%78$s\n%1$s%79$s\n"
#define CM "%1$s%80$s\n%1$s%81$s\n%1$s%82$s\n%1$s%83$s\n%1$s%84$s\n%1$s%85$s\n"
#define CN "%1$s%86$s\n%1$s%87$s\n%1$s%88$s\n%1$s%89$s\n%1$s%90$s\n%1$s%91$s\n"
#define CO "%1$s%92$s\n%1$s%93$s\n%1$s%94$s\n%1$s%95$s\n%1$s%96$s\n%1$s%97$s\n"
#define CP "%1$s%98$s\n%1$s%99$s\n%1$s%100$s\n%1$s%101$s\n%1$s%102$s\n%1$s%103$s\n"
#define CQ "%1$s%104$s\n%1$s%105$s\n%1$s%106$s\n"
#define CR ""
#define CS "AD\nAE\nAF\nAG\nif(val(i, j) == _ || val(i, j) == prevRow) return 0;\nprevRow = val(i, j);\nif(val(j, i) == _ || val(j, i) == prevCol) return 0;\nprevCol = val(j, j);\nAL\nAM\nAN\nAO\nAP\nAQ\nAR\nAS\nAT\n"
#define CT "AU\nAV\nif (val(i, j) == _) continue;\nif (val(i, k) == _) {\nval(i, k) = val(i, j);\nval(i, j) = _; changed = 1;\n} else if (val(i, k) == val(i, j)) {\nval(i, k) += val(i, j);\nval(i, j) = _; k++; changed = 1;\nBD\nval(i, k) = val(i, j);\nif(k != j) { val(i, j) = _;\nBG\nBH\nBI\nBJ\nBK\n"
#define CU "BL\nBN\n#ifdef NEW_GAME\nBO\n#else\nBP\nBQ\n#endif\nprintf(\nBS\nBT\nBU\n"
#define CV "BV\nBW\nBX\nBY\nBZ\nCA\nCB\nCC\nCD\nCE\nCF\nCG\nCH\nCI\nCJ\nCK\nCL\n"
#define CW "CM\nCN\nCO\nCP\nCQ\nCR\nCS\nCT\nCU\nCV\nCW\nCX,\nCY\nCZ\nDA\nDB\nDC\n"
#define CX "DD\nDE\nDF\nDG\nDH\nDI\nDJ\nDK\nDL\nDM\nDN\nDO\nDP\nDQ\nDR\nDS\nDT\nDU);}"
#define CY AA, S(_), AC, AB, board[0], board[1], board[2], board[3], board[4], board[5], board[6],
#define CZ board[7], board[8], board[9], board[10], board[11], board[12], board[13], board[14], board[15], S(AA),
#define DA S(AB), S(AC), S(AD), S(AE), S(AF), S(AG),
#define DB S(AL), S(AM), S(AN), S(AO), S(AP), S(AQ), S(AR), S(AS), S(AT), S(AU),
#define DC S(AV), S(BD),
#define DD S(BG), S(BH), S(BI), S(BJ), S(BK),
#define DE S(BL), S(BM), S(BN), S(BO),
#define DF S(BP), S(BQ), S(BS), S(BT), S(BU), S(BV), S(BW), S(BX), S(BY),
#define DG S(BZ), S(CA), S(CB), S(CC), S(CD), S(CE), S(CF), S(CG), S(CH), S(CI),
#define DH S(CJ), S(CK), S(CL), S(CM), S(CN), S(CO), S(CP), S(CQ), S(CR), S(CS),
#define DI S(CT), S(CU), S(CV), S(CW), S(CX), DK, DL, DM, DN, DO, DP, DQ, DR, DS,
#define DJ DT, DU, DV, S(DK), S(DL), S(DM), S(DN), S(DO), S(DP), S(DQ), S(DR), S(DS), S(DT), S(DU), S(DV),
#define DK "CY AA, S(_), AC, AB, board[0], board[1], board[2], board[3], board[4], board[5], board[6],"
#define DL "CZ board[7], board[8], board[9], board[10], board[11], board[12], board[13], board[14], board[15], S(AA),"
#define DM "DA S(AB), S(AC), S(AD), S(AE), S(AF), S(AG),"
#define DN "DB S(AL), S(AM), S(AN), S(AO), S(AP), S(AQ), S(AR), S(AS), S(AT), S(AU),"
#define DO "DC S(AV), S(BD),"
#define DP "DD S(BG), S(BH), S(BI), S(BJ), S(BK),"
#define DQ "DE S(BL), S(BM), S(BN), S(BO),"
#define DR "DF S(BP), S(BQ), S(BS), S(BT), S(BU), S(BV), S(BW), S(BX), S(BY),"
#define DS "DG S(BZ), S(CA), S(CB), S(CC), S(CD), S(CE), S(CF), S(CG), S(CH), S(CI),"
#define DT "DH S(CJ), S(CK), S(CL), S(CM), S(CN), S(CO), S(CP), S(CQ), S(CR), S(CS),"
#define DU "DI S(CT), S(CU), S(CV), S(CW), S(CX), DK, DL, DM, DN, DO, DP, DQ, DR, DS,"
#define DV "DJ DT, DU, DV, S(DK), S(DL), S(DM), S(DN), S(DO), S(DP), S(DQ), S(DR), S(DS), S(DT), S(DU), S(DV),"
AD
AE
AF
AG
if(val(i, j) == _ || val(i, j) == prevRow) return 0;
prevRow = val(i, j);
if(val(j, i) == _ || val(j, i) == prevCol) return 0;
prevCol = val(j, j);
AL
AM
AN
AO
AP
AQ
AR
AS
AT
AU
AV
if (val(i, j) == _) continue;
if (val(i, k) == _) {
val(i, k) = val(i, j);
val(i, j) = _; changed = 1;
} else if (val(i, k) == val(i, j)) {
val(i, k) += val(i, j);
val(i, j) = _; k++; changed = 1;
BD
val(i, k) = val(i, j);
if(k != j) { val(i, j) = _;
BG
BH
BI
BJ
BK
BL
BN
#ifdef NEW_GAME
BO
#else
BP
BQ
#endif
printf(
BS
BT
BU
BV
BW
BX
BY
BZ
CA
CB
CC
CD
CE
CF
CG
CH
CI
CJ
CK
CL
CM
CN
CO
CP
CQ
CR
CS
CT
CU
CV
CW
CX,
CY
CZ
DA
DB
DC
DD
DE
DF
DG
DH
DI
DJ
DK
DL
DM
DN
DO
DP
DQ
DR
DS
DT
DU);}
Makefile ASCII text
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NO_MOVE:
	@echo "use make <direction> to move the board in that direction"
	@echo "or make NEW_GAME to start a new game"

left: LEFT
LEFT:
	@gcc 2048.c -o 2048 -D LEFT -w
	@./2048 > 2048.c
	@head -n 19 2048.c | tail -n 17

right: RIGHT
RIGHT:
	@gcc 2048.c -o 2048 -D RIGHT -w
	@./2048 > 2048.c
	@head -n 19 2048.c | tail -n 17

up: UP
UP:
	@gcc 2048.c -o 2048 -D UP -w
	@./2048 > 2048.c
	@head -n 19 2048.c | tail -n 17

down: DOWN
DOWN:
	@gcc 2048.c -o 2048 -D DOWN -w
	@./2048 > 2048.c
	@head -n 19 2048.c | tail -n 17

new_game: NEW_GAME
NEW_GAME:
	@gcc 2048.c -o 2048 -D NEW_GAME -w
	@./2048 > 2048.c
	@head -n 19 2048.c | tail -n 17

entry #11

written by luatic
submitted at
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dir 42
dir src
main.rs ASCII text
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// Simple 2048 game for the terminal

use crossterm::{
    self, cursor,
    event::{read, Event, KeyCode},
    execute, queue, terminal,
};
use rand::Rng;
use std::{
    fmt,
    io::{self, Stdout, Write},
};

#[derive(Copy, Clone, PartialEq)]
enum Move {
    Left,
    Right,
    Up,
    Down,
}

impl TryFrom<KeyCode> for Move {
    type Error = ();
    fn try_from(value: KeyCode) -> Result<Self, Self::Error> {
        match value {
            KeyCode::Left | KeyCode::Char('a') => Ok(Move::Left),
            KeyCode::Right | KeyCode::Char('d') => Ok(Move::Right),
            KeyCode::Up | KeyCode::Char('w') => Ok(Move::Up),
            KeyCode::Down | KeyCode::Char('s') => Ok(Move::Down),
            _ => Err(()),
        }
    }
}

#[derive(PartialEq, Clone)]
struct Board {
    tiles: [[u8; 4]; 4],
}

impl Board {
    fn random_tile() -> u8 {
        if rand::thread_rng().gen_range(1..=10) == 10 {
            2
        } else {
            1
        }
    }
    fn place_random_tile(&mut self) {
        loop {
            let y = rand::thread_rng().gen_range(0..4);
            let x = rand::thread_rng().gen_range(0..4);
            if self.tiles[y][x] == 0 {
                self.tiles[y][x] = Self::random_tile();
                break;
            }
        }
    }
    fn init() -> Self {
        let mut this = Self { tiles: [[0; 4]; 4] };
        this.place_random_tile();
        this.place_random_tile();
        this
    }
    fn transpose(&mut self) {
        let tiles = &mut self.tiles;
        for y in 0..tiles.len() {
            for x in 0..y {
                (tiles[y][x], tiles[x][y]) = (tiles[x][y], tiles[y][x]);
            }
        }
    }
    fn reverse_rows(&mut self) {
        for row in self.tiles.as_mut() {
            row.reverse()
        }
    }
    fn move_left(&mut self) {
        for row in self.tiles.as_mut() {
            for x in 1..4 {
                let mut nx = x;
                while nx > 0 && row[nx - 1] == 0 {
                    nx -= 1;
                }
                if nx > 0 && row[nx - 1] == row[x] {
                    row[nx - 1] += 1;
                    row[x] = 0;
                } else if nx < x {
                    row[nx] = row[x];
                    row[x] = 0;
                }
            }
        }
    }
    fn make_move(&mut self, mov: Move) {
        match mov {
            Move::Left => self.move_left(),
            Move::Right => {
                self.reverse_rows();
                self.move_left();
                self.reverse_rows();
            }
            Move::Up => {
                self.transpose();
                self.move_left();
                self.transpose();
            }
            Move::Down => {
                self.transpose();
                self.reverse_rows();
                self.move_left();
                self.reverse_rows();
                self.transpose();
            }
        }
    }
    fn valid_moves(&self) -> impl Iterator<Item = &Move> {
        [Move::Left, Move::Right, Move::Up, Move::Down]
            .iter()
            .filter(|&&mov| {
                let mut clone = self.clone();
                clone.make_move(mov);
                clone != *self
            })
    }
    fn won(&self) -> bool {
        const TILE_2048: u8 = 11;
        self.tiles.iter().flatten().any(|&t| t == TILE_2048)
    }
}

// TODO (...) the hardcoded carriage returns for raw terminal mode feel dirty.
impl fmt::Display for Board {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let sep: String = "+----".repeat(4) + "+\r\n";
        for row in self.tiles {
            f.write_str(&sep)?;
            f.write_str(
                &(String::from("|")
                    + &row
                        .map(|tile| {
                            if tile == 0 {
                                "    ".into()
                            } else {
                                format!("{:^4}", 1 << tile)
                            }
                        })
                        .join("|")
                    + "|\r\n"),
            )?;
        }
        f.write_str(&sep)?;
        Ok(())
    }
}

struct RawTerminal {
    stdout: Stdout,
}
impl RawTerminal {
    fn init() -> Result<Self, io::Error> {
        terminal::enable_raw_mode()?;
        let mut stdout = io::stdout();
        execute!(
            stdout,
            terminal::EnterAlternateScreen,
            crossterm::cursor::Hide
        )?;
        Ok(Self { stdout })
    }
    fn queue_reset(&mut self) -> Result<(), io::Error> {
        queue!(
            self.stdout,
            terminal::Clear(terminal::ClearType::FromCursorUp),
            cursor::MoveTo(0, 0)
        )
    }
    fn flush(&mut self) -> Result<(), io::Error> {
        self.stdout.flush()
    }
}
impl Drop for RawTerminal {
    fn drop(&mut self) {
        execute!(
            self.stdout,
            crossterm::cursor::Show,
            terminal::LeaveAlternateScreen
        )
        .unwrap();
        terminal::disable_raw_mode().unwrap();
    }
}

enum GameOutcome {
    Win,
    Loss,
    Quit,
}

fn play() -> Result<GameOutcome, io::Error> {
    let mut terminal = RawTerminal::init()?;
    let mut board = Board::init();
    'game: loop {
        terminal.queue_reset()?;
        print!("{board}");
        print!("arrow keys or WASD to play, q to quit");
        terminal.flush()?;
        if board.won() {
            return Ok(GameOutcome::Win);
        }
        let valid_moves: Vec<&Move> = board.valid_moves().collect();
        if valid_moves.is_empty() {
            return Ok(GameOutcome::Loss);
        }
        let mov = loop {
            match read()? {
                Event::Key(event) => {
                    if event.code == KeyCode::Char('q') {
                        return Ok(GameOutcome::Quit);
                    }
                    if let Ok(mov) = Move::try_from(event.code) {
                        if valid_moves.contains(&&mov) {
                            break mov;
                        }
                    }
                }
                Event::Resize(_, _) => {
                    continue 'game;
                }
                _ => (),
            }
        };
        board.make_move(mov);
        board.place_random_tile();
    }
}

fn main() {
    let outcome = play().unwrap();
    println!(
        "{}",
        match outcome {
            GameOutcome::Win => "You win!",
            GameOutcome::Loss => "You lose!",
            GameOutcome::Quit => "quit",
        }
    );
}
Cargo.lock ASCII text
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3

[[package]]
name = "_2048"
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