我正在创建一个使用MySQL数据库创建"游戏场"的游戏。
在MySQL表中,我有两列pointX
和pointY
,都是INT
。我也可以使用POINT
,但在我的情况下,这两列是更好的解决方案。
| id | pointX | pointY | player | game |
|----|--------|--------|--------|------|
| 1 | -2 | 1 | 7 | 10 |
| 2 | -3 | 2 | 5 | 10 |
| 3 | 2 | -2 | 2 | 10 |
| 4 | -2 | -1 | 1 | 10 |
我应该从这个MySQL表生成HTML表。类似这样的东西,但没有坐标头(下面这些只是为了更容易理解):
|-----|----|----|----|----|----|----|
| Y/X | -3 | -2 | -1 | 0 | 1 | 2 |
|-----|----|----|----|----|----|----|
| -2 | | | | | | 2 |
|-----|----|----|----|----|----|----|
| -1 | | 1 | | | | |
|-----|----|----|----|----|----|----|
| 0 | | | | | | |
|-----|----|----|----|----|----|----|
| 1 | | 7 | | | | |
|-----|----|----|----|----|----|----|
| 2 | 5 | | | | | |
|-----|----|----|----|----|----|----|
另外。。每个<td>
应该具有属性data-cell
,该属性包括坐标,例如data-cell="-2x-1"
。
开始的最佳方式是什么?
$rng = $dbh->prepare('
SELECT MIN(pointX) AS minX, MIN(pointY) AS minY,
MAX(pointX) AS maxX, MAX(pointY) AS maxY
FROM field
WHERE game = ?
LOCK IN SHARE MODE
');
$qry = $dbh->prepare('
SELECT pointX, pointY, player
FROM field
WHERE game = ?
ORDER BY pointX, pointY
');
$dbh->beginTransaction();
$rng->execute([$game_id]);
$qry->execute([$game_id]);
$dbh->rollBack();
$limits = $rng->fetch();
$player = $qry->fetch();
echo '<table>';
for ($y = $limits['minY']; $y <= $limits['maxY']; $y++) {
echo '<tr>';
for ($x = $limits['minX']; $x <= $limits['maxX']; $x++) {
printf('<td data-cell="%dx%+dy">', $x, $y);
if ($player and $player['pointX'] == $x and $player['pointY'] == $y) {
echo htmlentities($player['player']);
$player = $qry->fetch();
} else {
echo ' ';
}
echo '</td>';
}
echo '</tr>';
}
echo '</table>';
看起来您已经有了一个良好的开端。假设X和Y的单元格数量分别为$xcells和$ycells,我将采取的下一步是这样构建表:
echo "<table>";
for ($i = -3; $i < $ycells; i++) {
echo "<tr>";
for ($j = -3; $j < $xcells; j++) {
echo "<td data-cell='" . $i . "y" . $j . "x'>";
}
echo "</tr>";
}
echo "</table>";