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feat: Add bishops to game system

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This commit is contained in:
overflowerror 2023-12-29 23:55:45 +01:00
parent 26f1a295a7
commit aeda1c2e8f
2 changed files with 141 additions and 0 deletions
src/Game
Bishop.php
tests/Game
BishopTest.php

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src/Game/Bishop.php Normal file
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<?php
namespace Game;
class Bishop extends Piece {
public function getName(): string {
return "Bishop";
}
public function getShort(): string {
return "B";
}
public function getMoveCandidateMap(FieldBitMap $occupied, FieldBitMap $captureable, FieldBitMap $threatened): FieldBitMap {
$result = FieldBitMap::empty();
$directions = [true, true, true, true];
for ($i = 1; $i < 8; $i++) {
for ($d = 0; $d < 4; $d++) {
if ($directions[$d]) {
$candidate = new Position(
$this->position->file + $i * ($d % 2 == 0 ? 1 : -1),
$this->position->rank + $i * ($d < 2 ? 1 : -1)
);
if ($candidate->isValid()) {
if ($captureable->has($candidate)) {
$result->add($candidate);
$directions[$d] = false;
} else if ($occupied->has($candidate)) {
$directions[$d] = false;
} else {
$result->add($candidate);
}
} else {
$directions[$d] = false;
}
}
}
}
return $result;
}
}

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tests/Game/BishopTest.php Normal file
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<?php
declare(strict_types=1);
namespace Game;
use PHPUnit\Framework\TestCase;
final class BishopTest extends TestCase {
public function testMoves_unobstructed() {
$subject = new Bishop(new Position(
3, 4
), Side::WHITE);
$result = $subject->getMoveCandidateMap(FieldBitMap::empty(), FieldBitMap::empty(), FieldBitMap::empty());
$this->assertTrue(
$result->equals(new FieldBitMap([
new Position(2, 3),
new Position(1, 2),
new Position(0, 1),
new Position(4, 5),
new Position(5, 6),
new Position(6, 7),
new Position(4, 3),
new Position(5, 2),
new Position(6, 1),
new Position(7, 0),
new Position(2, 5),
new Position(1, 6),
new Position(0, 7),
]))
);
}
public function testMoves_obstructed() {
$subject = new Bishop(new Position(
3, 2
), Side::WHITE);
$result = $subject->getMoveCandidateMap(
new FieldBitMap([
new Position(4, 3),
new Position(5, 0)
]),
new FieldBitMap([
new Position(2, 1)
]),
FieldBitMap::empty()
);
$this->assertTrue(
$result->equals(new FieldBitMap([
new Position(4, 1),
new Position(2, 1),
new Position(2, 3),
new Position(1, 4),
new Position(0, 5)
]))
);
}
public function testCaptureable() {
$subject = new Bishop(
new Position(5, 6),
Side::WHITE,
);
$this->assertTrue(
$subject->getCaptureableMap(true)->equals(new FieldBitMap([
new Position(5, 6)
]))
);
}
public function testCaptureMap() {
$subject = new Bishop(new Position(
5, 2
), Side::WHITE);
$result = $subject->getCaptureMap(
new FieldBitMap([
new Position(6, 3),
new Position(3, 4)
])
);
$this->assertTrue(
$result->equals(new FieldBitMap([
new Position(6, 1),
new Position(7, 0),
new Position(4, 3),
new Position(4, 1),
new Position(3, 0),
]))
);
}
}