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section.php
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section.php
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<?php
/*
* Zed
* (c) 2010, Dereckson, some rights reserved
* Released under BSD license
*
* Story section
*/
require_once('choice.php');
require_once('hook.php');
class StorySection {
/*
* @var string the section ID
*/
public $id;
/*
* @var string the section title
*/
public $title;
/*
* @var string the section description
*/
public $description;
/*
* @var string the local location
*/
public $location_local;
/*
* @var Array the section choices (array of StoryChoice items)
*/
public $choices = array();
/*
* @var Array the section hooks (array of StoryHook items)
*/
public $hooks = array();
/*
* @var boolean if true, it's the story start ; otherwise, false;
*/
public $start;
/*
* @var Story the story calling the section
*/
public $story;
/*
* Initializes a new instance of StorySection class
*/
function __construct ($id, $story = null) {
$this->id = $id;
if ($story !== null) {
$this->story = $story;
}
}
/*
* Gets choice from specified guid
* @return StoryChoice the wanted choice, or null if it doesn't exist
*/
function get_choice ($guid) {
foreach ($this->choices as $choice) {
if ($choice->guid == $guid)
return $choice;
}
return null;
}
/*
* Intializes a story section from an SimpleXMLElement XML fragment
* @param SimpleXMLElement $xml the XML fragment
* @param Story $story the calling story
* @return StorySection the section instance
*/
static function from_xml ($xml, $story = null) {
//Reads attributes
$id = '';
$start = false;
foreach ($xml->attributes() as $key => $value) {
switch ($key) {
case 'start':
if ($value) $start = true;
break;
case 'id':
$id = (string)$value;
break;
default:
message_die(GENERAL_ERROR, "Unknown attribute: $key = \"$value\"", "Story error");
}
}
if (!$id) {
message_die(GENERAL_ERROR, "Section without id. Please add id='' in <section> tag", "Story error");
}
$section = new StorySection($id, $story);
$section->title = (string)$xml->title;
$section->description = (string)$xml->description;
$section->location_local = (string)$xml->local;
$section->start = $start;
//Adds choices
if ($xml->choices) {
foreach ($xml->choices->choice as $choice) {
$section->choices[] = StoryChoice::from_xml($choice);
}
}
//Adds hooks
if ($xml->hooks) {
foreach ($xml->hooks->hook as $hook) {
//<hook type="spatioport" /> will assign 'spatioport' to $hook;
$hook = (string)$hook->attributes()->type;
require_once("hook_$hook.php");
$section->hooks[] = new $class($section->story, $section);
}
}
return $section;
}
}
?>

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