|
1
|
|
|
<?php declare(strict_types=1); |
|
2
|
|
|
|
|
3
|
|
|
namespace Stratadox\PuzzleSolver\Puzzle\Maze; |
|
4
|
|
|
|
|
5
|
|
|
use Stratadox\PuzzleSolver\Move; |
|
6
|
|
|
use Stratadox\PuzzleSolver\Puzzle; |
|
7
|
|
|
use Stratadox\PuzzleSolver\Moves; |
|
8
|
|
|
use function assert; |
|
9
|
|
|
use function explode; |
|
10
|
|
|
use function implode; |
|
11
|
|
|
use const PHP_EOL; |
|
12
|
|
|
|
|
13
|
|
|
final class MazePuzzle implements Puzzle |
|
14
|
|
|
{ |
|
15
|
|
|
/** @var Maze */ |
|
16
|
|
|
private $maze; |
|
17
|
|
|
/** @var Hero */ |
|
18
|
|
|
private $hero; |
|
19
|
|
|
/** @var Moves */ |
|
20
|
|
|
private $actionsSoFar; |
|
21
|
|
|
|
|
22
|
|
|
public function __construct(Maze $maze, Hero $hero, Moves $actionsSoFar) |
|
23
|
|
|
{ |
|
24
|
|
|
$this->maze = $maze; |
|
25
|
|
|
$this->hero = $hero; |
|
26
|
|
|
$this->actionsSoFar = $actionsSoFar; |
|
27
|
|
|
} |
|
28
|
|
|
|
|
29
|
|
|
public static function withHeroAndMaze(Hero $hero, Maze $maze): Puzzle |
|
30
|
|
|
{ |
|
31
|
|
|
return new self($maze, $hero, Moves::none()); |
|
32
|
|
|
} |
|
33
|
|
|
|
|
34
|
|
|
public function isSolved(): bool |
|
35
|
|
|
{ |
|
36
|
|
|
return $this->maze->isCompletedBy($this->hero); |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
public function movesSoFar(): Moves |
|
40
|
|
|
{ |
|
41
|
|
|
return $this->actionsSoFar; |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
|
|
public function representation(): string |
|
45
|
|
|
{ |
|
46
|
|
|
$maze = explode(PHP_EOL, (string) $this->maze); |
|
47
|
|
|
$maze[$this->hero->y()][$this->hero->x()] = 'H'; |
|
48
|
|
|
return implode(PHP_EOL, $maze); |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
public function possibleMoves(): Moves |
|
52
|
|
|
{ |
|
53
|
|
|
return Action::all()->filterWith(function (Action $action) { |
|
|
|
|
|
|
54
|
|
|
return $this->maze->isValidPosition($this->hero->after($action)); |
|
55
|
|
|
}); |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
public function afterMaking(Move ...$moves): Puzzle |
|
59
|
|
|
{ |
|
60
|
|
|
$new = clone $this; |
|
61
|
|
|
foreach ($moves as $move) { |
|
62
|
|
|
assert($move instanceof Action); |
|
63
|
|
|
$new->hero = $new->hero->after($move); |
|
64
|
|
|
$new->actionsSoFar = $new->actionsSoFar->add($move); |
|
65
|
|
|
} |
|
66
|
|
|
return $new; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
public function hero(): Hero |
|
70
|
|
|
{ |
|
71
|
|
|
return $this->hero; |
|
72
|
|
|
} |
|
73
|
|
|
} |
|
74
|
|
|
|
Stratadox /
PuzzleSolver
Loading history...