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Slightly simpler bounds check.

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Bert Peters
2017-12-19 10:16:24 +01:00
parent c1e8d32cd0
commit bbf8ad85e4
1 changed files with 2 additions and 2 deletions
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4
2017/day-19/solution.php
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@@ -16,11 +16,11 @@ while ($maze[$y][$x] != ' ') {
$path .= $maze[$y][$x];
} elseif ($maze[$y][$x] == '+') {
if ($dir[0] == 0) {
$dir[0] = ($x + 1 >= strlen($maze[$y]) || $maze[$y][$x + 1] == ' ') ? -1 : 1;
$dir[0] = ($x == 0 || $maze[$y][$x - 1] == ' ') ? 1 : -1;
$dir[1] = 0;
} else {
$dir[0] = 0;
$dir[1] = ($y + 1 >= count($maze) || $maze[$y + 1][$x] == ' ') ? -1 : 1;
$dir[1] = ($y == 0 || $maze[$y - 1][$x] == ' ') ? 1 : -1;
}
}