function testShootLaser()
{
$maze = new Maze(3, 3);
$maze->setStart(1, 2, 'S');
# Test no mirror
$results = $maze->shootLaser();
$this->assertEquals(2, $results[0]);
$this->assertEquals(1, $results[1]);
$this->assertEquals(0, $results[2]);
# Test 1 mirror
$maze->setMirror(1, 1, '\\');
$results = $maze->shootLaser();
$this->assertEquals(2, $results[0]);
$this->assertEquals(2, $results[1]);
$this->assertEquals(1, $results[2]);
# Test cycle
$maze->setStart(1, 2, 'E');
$maze->setMirror(2, 2, '\\');
$maze->setMirror(2, 0, '/');
$maze->setMirror(0, 0, '\\');
$maze->setMirror(0, 2, '/');
$results = $maze->shootLaser();
$this->assertEquals(7, $results[0]);
$this->assertEquals(-1, $results[1]);
$this->assertEquals(-1, $results[2]);
}
exit;
}
$input = fopen($input_file, 'r');
while ($line = fgets($input)) {
$coordinates = explode(' ', trim($line));
$x = $coordinates[0];
$y = $coordinates[1];
# Grid dimensions
if (count($coordinates) == 2) {
$maze = new Maze($x, $y);
# Player coordinates
} elseif ($coordinates[2] == 'S') {
$maze->setStart($x, $y, $coordinates[2]);
# Mirror
} elseif ($coordinates[2] == '/' || $coordinates[2] == '\\') {
$maze->setMirror($x, $y, $coordinates[2]);
# Invalid
} else {
print "Usage: php maze ./path/to/input/file ./path/to/output/file\n";
fclose($input);
exit;
}
}
# SHOOT!
$result = $maze->shootLaser();
# Check if they got stuck in a loop and write to output file
$output = fopen($output_file, 'w');
if ($result[1] == -1) {
fwrite($output, "{$result[0]}\r\nStuck in a loop");
} else {
fwrite($output, "{$result[0]}\r\n{$result[1]} {$result[2]}");
