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generate_try1.php
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generate_try1.php
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<html>
<head>
<style type="text/css">
* {
padding: 0;
margin: 0;
}
table {
margin: 10px;
}
table td {
padding: 3px;
}
table td.empty {
background-color: #ddd;
}
table td.room {
background-color: #999;
}
table td.first {
background-color: green;
}
table td.hall {
background-color: #ccc;
}
table td.other {
background-color: red;
}
pre {
margin: 10px;
}
div#grid {
background-color: #ddd;
margin: 10px;
float: left;
}
</style>
</head>
<body>
<?php
echo '<pre>';
// generate dungeon
$tile_scale = 5; // 1 tile = 5 feet
$max_rooms = 40;
$grid_max_width = 100;
$grid_max_height = 50;
$grid_surface_area = $grid_max_height * $grid_max_width;
$rooms_max_surface_area = $grid_surface_area * 0.5;
echo 'Grid dimentions: '.$grid_max_width.'x'.$grid_max_height.', surface area: '.$grid_surface_area."\n";
// init grid
$grid = array();
for ($y = 0; $y < $grid_max_height; $y++) {
$grid[$y] = array();
for ($x = 0; $x < $grid_max_width; $x++) {
$grid[$y][$x] = array();
}
}
//print_r($grid);
// build rooms
$rooms = array();
$room_surface_area = 0;
// first room is the entrance -- on the edge somewhere
$first_room = array();
$first_room['con'] = false;
$first_room['t'] = 'first';
$first_room['w'] = mt_rand(3, 10);
$first_room['h'] = mt_rand(3, 10);
$first_room['x'] = 0;
$first_room['y'] = 0;
$first_room['x2'] = $first_room['x'] + $first_room['w'];
$first_room['y2'] = $first_room['y'] + $first_room['h'];
$room_surface_area += ( $first_room['w'] * $first_room['h'] );
$rooms[] = $first_room;
$room_num = 1;
while ($room_surface_area < $rooms_max_surface_area) {
if (count($rooms) >= $max_rooms) {
$room_surface_area = $rooms_max_surface_area;
}
$new_room = array();
$new_room['con'] = false;
$new_room['t'] = 'room';
$new_room['w'] = mt_rand(3, 10);
$new_room['h'] = mt_rand(3, 10);
$new_room['x'] = mt_rand(0, $grid_max_width);
$new_room['y'] = mt_rand(0, $grid_max_height);
$new_room['x2'] = $new_room['x'] + $new_room['w'];
$new_room['y2'] = $new_room['y'] + $new_room['h'];
if ($new_room['x2'] > $grid_max_width) {
$x_diff = abs($grid_max_width - $new_room['x2']);
$new_room['x'] = $new_room['x'] - $x_diff;
$new_room['x2'] = $new_room['x'] + $new_room['w'];
}
if ($new_room['y2'] > $grid_max_height) {
$y_diff = abs($grid_max_height - $new_room['y2']);
$new_room['y'] = $new_room['y'] - $y_diff;
$new_room['y2'] = $new_room['y'] + $new_room['h'];
}
// collision check
foreach ($rooms as $room) {
if ($new_room['x'] >= $room['x'] && $new_room['x'] <= $room['x2']) {
if ($new_room['y'] >= $room['y'] && $new_room['y'] <= $room['y2']) {
continue 2;
}
}
if ($new_room['x'] >= $room['x'] && $new_room['x'] <= $room['x2']) {
if ($new_room['y2'] >= $room['y'] && $new_room['y2'] <= $room['y2']) {
continue 2;
}
}
if ($new_room['x2'] >= $room['x'] && $new_room['x2'] <= $room['x2']) {
if ($new_room['y'] >= $room['y'] && $new_room['y'] <= $room['y2']) {
continue 2;
}
}
if ($new_room['x2'] >= $room['x'] && $new_room['x2'] <= $room['x2']) {
if ($new_room['y2'] >= $room['y'] && $new_room['y2'] <= $room['y2']) {
continue 2;
}
}
// ((LineB2.Y Ð LineB1.Y) * (LineA2.X Ð LineA1.X)) - ((LineB2.X Ð lineB1.X) * (LineA2.Y - LineA1.Y))
/*
$wut = (($new_room['y2'] - $new_room['y']) * ($room['x2'] - $room['x'])) - (($new_room['x2'] - $new_room['x']) * ($room['y2'] - $room['y']));
if ($wut != 0) {
continue 2;
}
*/
}
$room_color = 'rgb('.rand(0,255).', '.rand(0,255).', '.rand(0,255).')';
//$room_color = 'rgb(127, 127, 127)';
$new_room['c'] = $room_color;
$room_surface_area += ( $new_room['w'] * $new_room['h'] );
$rooms[] = $new_room;
$room_num++;
}
// check for rooms that are already connected to another
foreach ($rooms as &$room) {
if ($room['con'] == true) {
continue;
}
foreach ($rooms as &$other_room) {
if ($room['x'] == $other_room['x'] && $room['y'] == $other_room['y']) {
// the same room! move on
continue;
}
// whether the other room is touching the right edge
if ($other_room['x2']+1 == $room['x'] && $other_room['y'] >= $room['y'] && $other_room['y'] < $room['y2']) {
$room['con'] = true;
$other_room['con'] = true;
}
// whether the other room is touching the left edge
if ($other_room['x']-1 == $room['x'] && $other_room['y'] >= $room['y'] && $other_room['y'] < $room['y2']) {
$room['con'] = true;
$other_room['con'] = true;
}
// whether the other room is touching the top edge
if ($other_room['y']+1 == $room['y'] && $other_room['x'] >= $room['x'] && $other_room['x'] < $room['x2']) {
$room['con'] = true;
$other_room['con'] = true;
}
// whether the other room is touching the bottom edge
if ($other_room['y2']-1 == $room['y'] && $other_room['x'] >= $room['x'] && $other_room['x'] < $room['x2']) {
$room['con'] = true;
$other_room['con'] = true;
}
}
unset($other_room);
}
unset($room);
//print_r($rooms);
$rooms = array();
$rooms[] = array('w' => 10, 'h' => 10, 't' => 'room', 'con' => false, 'con_num' => 0, 'x' => 10, 'y' => 10, 'x2' => 20, 'y2' => 20, 'c' => 'green' );
$rooms[] = array('w' => 10, 'h' => 10, 't' => 'room', 'con' => false, 'con_num' => 0, 'x' => 30, 'y' => 15, 'x2' => 40, 'y2' => 25, 'c' => 'blue' );
$rooms[] = array('w' => 10, 'h' => 10, 't' => 'room', 'con' => false, 'con_num' => 0, 'x' => 50, 'y' => 10, 'x2' => 60, 'y2' => 20, 'c' => 'red' );
// do hallways
foreach ($rooms as $room) {
if ($room['con_num'] == 0) {
// connect it to something!
// find another room nearby to connect to...?
$top_left = array('x' => $room['x'], 'y' => $room['y']);
$top_right = array('x' => $room['x2'], 'y' => $room['y']);
$bottom_left = array('x' => $room['x'], 'y' => $room['y2']);
$bottom_right = array('x' => $room['x2'], 'y' => $room['y2']);
// if there is another room within... 20 units? connect to it
$unit_radius = 15;
foreach ($rooms as $other_room) {
if ($other_room['x'] == $room['x'] && $other_room['y'] == $room['y']) {
continue;
}
echo $room['c'].' checking against '.$other_room['c']."\n";
$other_top_left = array('x' => $other_room['x'], 'y' => $other_room['y']);
$other_top_right = array('x' => $other_room['x2'], 'y' => $other_room['y']);
$other_bottom_left = array('x' => $other_room['x'], 'y' => $other_room['y2']);
$other_bottom_right = array('x' => $other_room['x2'], 'y' => $other_room['y2']);
// check from room top left to other top left
$dx = $other_room['x'] - $top_left['x'];
$dy = $other_room['y'] - $top_left['y'];
if (($dx * $dx) + ($dy * $dy) < ($unit_radius*$unit_radius)) {
echo $room['c'].' collides with '.$other_room['c'].' from top left!'."\n";
}
// check from room top right to other top left
$dx = $other_room['x'] - $top_right['x'];
$dy = $other_room['y'] - $top_right['y'];
if (($dx * $dx) + ($dy * $dy) < ($unit_radius*$unit_radius)) {
echo $room['c'].' collides with '.$other_room['c'].' from top right!'."\n";
}
// check from room bottom left to other top left
$dx = $other_room['x'] - $bottom_left['x'];
$dy = $other_room['y'] - $bottom_left['y'];
if (($dx * $dx) + ($dy * $dy) < ($unit_radius*$unit_radius)) {
echo $room['c'].' collides with '.$other_room['c'].' from bottom left!'."\n";
}
// check from room bottom right to other top left
$dx = $other_room['x'] - $bottom_right['x'];
$dy = $other_room['y'] - $bottom_right['y'];
if (($dx * $dx) + ($dy * $dy) < ($unit_radius*$unit_radius)) {
echo $room['c'].' collides with '.$other_room['c'].' from bottom right!'."\n";
}
}
unset($other_room);
}
}
unset($room);
echo count($rooms).' rooms.'."\n";
echo '</pre>';
// display grid
foreach ($rooms as $room) {
for ($x = $room['x']; $x < $room['x2']; $x++) {
for ($y = $room['y']; $y < $room['y2']; $y++) {
$grid[$x][$y] = $room;
}
}
}
echo '<div id="grid">';
echo '<table cellpadding="0" cellspacing="0">';
for ($y = 0; $y < $grid_max_height; $y++) {
echo '<tr>';
for ($x = 0; $x < $grid_max_width; $x++) {
$class = 'empty';
if (isset($grid[$x][$y]['t'])) {
$this_room = $rooms[$grid[$x][$y]['id']];
switch ($grid[$x][$y]['t']) {
case 'room':
case 'first':
echo '<td class="'.$grid[$x][$y]['t'].'" style="background-color:'.$grid[$x][$y]['c'].'" title="room '.$grid[$x][$y]['id'].', '.(($this_room['con']) ? 'connected': 'not connected').'"> </td>';
break;
case 'hall':
echo '<td class="'.$class.'"> </td>';
break;
default:
$class = 'other';
echo '<td class="'.$class.'"> </td>';
}
} else {
echo '<td class="empty"> </td>';
}
}
echo '</tr>';
}
echo '</table>';
echo '</div>';
?>
</body>
</html>