function find_start_location($start, $lastLocation, $homeLocation, &$scene, &$startPosition, &$startLookAt)
{
$config =& get_config();
$defaultLocation = $config['default_location'];
$scene = null;
if (strtolower($start) == "last") {
if (isset($lastLocation)) {
log_message('debug', sprintf("Finding start location (last) for '%s'", $lastLocation->SceneID));
$scene = lookup_scene_by_id($lastLocation->SceneID);
if (isset($scene)) {
$startPosition = $lastLocation->Position;
$startLookAt = $lastLocation->LookAt;
return true;
}
}
}
if (strtolower($start) == "home") {
if (isset($homeLocation)) {
log_message('debug', sprintf("Finding start location (home) for '%s'", $homeLocation->SceneID));
$scene = lookup_scene_by_id($homeLocation->SceneID);
if (isset($scene)) {
$startPosition = $homeLocation->Position;
$startLookAt = $homeLocation->LookAt;
return true;
}
}
}
if (preg_match('/^uri:([a-zA-Z0-9\\s-_]+)&(\\d+)&(\\d+)&(\\d+)$/', $start, $matches)) {
log_message('debug', sprintf("Finding start location (custom: %s) for '%s'", $start, $matches[1]));
$scene = lookup_scene_by_name($matches[1]);
if (isset($scene)) {
$startPosition = new Vector3($matches[2], $matches[3], $matches[4]);
$startLookAt = new Vector3(1, 0, 0);
return true;
}
}
// Check to see if a valid default location has been set
if (preg_match('/^([a-zA-Z0-9\\s-_]+)\\/(\\d+)\\/(\\d+)\\/(\\d+)$/', $defaultLocation, $matches)) {
log_message('debug', sprintf("Finding start location (default: %s) for '%s'", $defaultLocation, $matches[1]));
$scene = lookup_scene_by_name($matches[1]);
if (isset($scene)) {
$startPosition = new Vector3($matches[2], $matches[3], $matches[4]);
$startLookAt = new Vector3(1, 0, 0);
return true;
}
} else {
log_message('info', 'No valid default_location set');
}
// Last resort lookup
$position = Vector3::Zero();
log_message('debug', sprintf("Finding start location (any: %s) for '%s'", $start, $position));
$scene = lookup_scene_by_position($position, true);
if (isset($scene)) {
$startPosition = new Vector3(($scene->MinPosition->X + $scene->MaxPosition->X) / 2 - $scene->MinPosition->X, ($scene->MinPosition->Y + $scene->MaxPosition->Y) / 2 - $scene->MinPosition->Y, 25);
$startLookAt = new Vector3(1, 0, 0);
return true;
}
return false;
}
function link_region($method_name, $params, $user_data)
{
log_message('info', "link_region called");
$config =& get_config();
$req = $params[0];
if (isset($req['region_name']) && strlen($req['region_name']) > 0) {
$region_name = $req['region_name'];
log_message('debug', "Using specified region name {$region_name}");
} else {
$region_name = $config['hypergrid_default_region'];
log_message('debug', "No region name specified - using {$region_name}");
}
$scene = lookup_scene_by_name($region_name);
$response = array();
if ($scene == null) {
log_message('warn', "Unable to link to unknown region {$region_name} - no scene found");
$response['result'] = 'false';
} else {
$response['result'] = 'true';
$response['uuid'] = $scene->SceneID;
// Yay for 64-bit integer bitmath in PHP
$x = $scene->MinPosition->X;
$y = $scene->MinPosition->Y;
$handle = bitShift($x, 32);
$handle = bitOr($handle, (string) $y, 0);
$response['handle'] = (string) $handle;
$response['region_image'] = "http://" . $scene->ExtraData['ExternalAddress'] . ":" . ($response['server_uri'] = $scene->Address);
$response['external_name'] = $scene->Name;
log_message('debug', "Succesfully linked to {$region_name}@" . $scene->Address);
}
return $response;
}