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story.php
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story.php
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<?php
/**
* Story
*
* Zed. The immensity of stars. The HyperShip. The people.
*
* (c) 2010, Dereckson, some rights reserved.
* Released under BSD license.
*
* This controller is a storytelling engine allowing to explore a place like
* in fighting fantasy gamebooks / livres dont vous êtes le héros.
*
* This controller is called by the explore controller and handles /explore URL.
*
* It uses the Story classes, the story.tpl view and content/stories/*.xml as
* stories content datasource.
*
* @package Zed
* @subpackage Controllers
* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
* @copyright 2010 Sébastien Santoro aka Dereckson
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @version 0.1
* @link http://scherzo.dereckson.be/doc/zed
* @link http://zed.dereckson.be/
* @filesource
*
* @todo Create a separate release from Zed based on this controller and the Story library.
* @todo Add code to handle actions defined in choices like inventory management
*/
//
// Helper method
//
/**
* Gets section to print to the user
* @param Story the story the section to get (yep, we could've global $story)
* @return StorySection the section, or null if not found
*/
function get_section ($story) {
global $url, $smarty, $CurrentPerso;
//If the URL contains a choice guid, use it as story progress source
//e.g. /explore/143f7200-766b-7b8b-e3f4-9fbfeeaeb5dd
if (count($url) > 1) {
$guid = $url[1];
//Ensures we've a StorySection object in the Story variable
if (!array_key_exists('StoryChoices', $_SESSION)) {
$smarty->assign('WAP', lang_get('ExpiredStorySession'));
} else {
//Gets StoryChoice (creating a dummy section to use get_choice method)
$section = new StorySection("void");
$section->choices = $_SESSION['StoryChoices'];
if (!$choice = $section->get_choice($guid)) {
$smarty->assign('WAP', lang_get('InvalidStoryGUID'));
}
//TODO: add code here to handle actions defined in choices
//e.g. item added to inventory
//Gets section
if ($section_id = $choice->goto) {
if (!array_key_exists($section_id, $story->sections)) {
message_die(GENERAL_ERROR, "Choice <em>$choice->text</em> redirects to <em>$section_id</em> but this section doesn't exist.", "Story error");
}
return $story->sections[$section_id];
}
}
}
if (!$CurrentPerso->location_local) {
//Gets start section
return $story->get_start_section();
}
//Gets section matching perso location
return $story->get_section_from_location($CurrentPerso->location_local);
}
//
// Opens .xml file
//
$file = STORIES_DIR . '/' . $CurrentPerso->location_global . '.xml';
if (!file_exists($file)) {
message_die(GENERAL_ERROR, "If you want to write a story for this place, contact Dereckson — $file", "No story defined");
}
//
// Gets story
//
//Loads story and tries to get the section
require_once('includes/story/story.php');
$story = new Story($file);
$section = get_section($story);
//Ensures we've a section
if (!$section) {
message_die(GENERAL_ERROR, "Nothing to do at this location. Contact Dereckson if you think it's a bug or you want to write a story here.", "Story");
}
//Performs section actions
if ($section->location_local) {
//Moves perso to section local location
$CurrentPerso->move_to(null, $section->location_local);
}
//Saves section in session, for choices handling
$_SESSION['StoryChoices'] = $section->choices;
//
// HTML output
//
//Serves header
$smarty->assign('PAGE_TITLE', $story->title);
include('header.php');
//Serves content
$smarty->assign("section", $section);
$smarty->display('story.tpl');
//Serves footer
$smarty->assign('screen', "Story, section $section->id");
include('footer.php');
?>

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