44 lines
1.3 KiB
PHP
44 lines
1.3 KiB
PHP
<?php
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header('Content-Type: image/x-icon');
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const SIZE = 16;
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const WALL = 1;
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const GROUND = 0;
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$favicon = imagecreatetruecolor(SIZE, SIZE);
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$wallColor = imagecolorallocate($favicon, 165, 80, 30);
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$groundColor = imagecolorallocate($favicon, 203, 162, 133);
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imagefill($favicon, 0, 0, $wallColor);
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$maze = array();
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for ($y = 0; $y < SIZE; $y++) {
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$maze[$y] = array();
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for ($x = 0; $x < SIZE; $x++) {
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$maze[$y][$x] = WALL;
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}
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}
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function dig($position) {
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global $maze;
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global $favicon;
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global $groundColor;
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$directions = [[0, 1], [0, -1], [1, 0], [-1, 0]];
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shuffle($directions);
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foreach ($directions as $direction) {
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$step1 = [$position[0] + $direction[0], $position[1] + $direction[1]];
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$step2 = [$step1[0] + $direction[0], $step1[1] + $direction[1]];
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if (0 <= $step2[1] and $step2[1] < SIZE and 0 <= $step2[0] and $step2[0] < SIZE and $maze[$step2[1]][$step2[0]] == WALL) {
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$maze[$step1[1]][$step1[0]] = GROUND;
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imagesetpixel($favicon, $step1[0], $step1[1], $groundColor);
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$maze[$step2[1]][$step2[0]] = GROUND;
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imagesetpixel($favicon, $step2[0], $step2[1], $groundColor);
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dig($step2);
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}
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}
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}
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dig([1, 1]);
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imagebmp($favicon);
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imagedestroy($favicon);
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?>
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