File indexing completed on 2024-04-28 15:07:44

 /* GCompris - balancebox_common.js
  *
  * SPDX-FileCopyrightText: 2015 Holger Kaelberer <holger.k@elberer.de>
  *
  * Authors:
  *   Holger Kaelberer <holger.k@elberer.de>
  *
  *   SPDX-License-Identifier: GPL-3.0-or-later
  */
 
 /**
  * Level description format:
  *
  * Example:
  * [ { "level": 1,
  *     "map": [ [ 0x0000,  0x0308, ... ],
  *              [ 0x0010,  0x0008, ... ],
  *              ...
  *            ],
  *     "targets": [ 1, 2, 3, 5, 10, ... ]
  *   },
  *   { "level": 2, ... }
  *   ...
  * ]
  *
  * "level": Number of the level.
  * "map":   Definition of the map inside the balancebox.
  *          The map is a 2-dimensional array of map cells. A cell is
  *          described by a bitmask of 16 bit with the lower 8bit defining walls,
  *          objects, etc. (cf. below) and the higher 8 bit defining the order of
  *          buttons present on the map. The values of the buttons are described
  *          in the "targets" property.
  * "targets": Values of the buttons present on the map. Most likely these will
  *            be numbers, but letters are also possible. The order in which they
  *            need to be pressed by the ball is defined in the higher 8 bits of
  *            the map fields.
  */
 
 var EMPTY   = 0x0000;
 var NORTH   = 0x0001;
 var EAST    = 0x0002;
 var SOUTH   = 0x0004;
 var WEST    = 0x0008;
 // all the following are mutually exclusive:
 var START   = 0x0010;
 var GOAL    = 0x0020;
 var HOLE    = 0x0040;
 var CONTACT = 0x0080;
 
 var baseUrl = "qrc:/gcompris/src/activities/balancebox/resource";
 var builtinFile = baseUrl + "/levels-default.json";
 
 function validateLevels(doc)
 {
     // minimal syntax check:
     if (undefined === doc || !Array.isArray(doc) || doc.length < 1)
         return false;
     for (var i = 0; i < doc.length; i++) {
         if (undefined === doc[i].map || !Array.isArray(doc[i].map) ||
                 doc[i].map.length < 1)
             return false;
     }
     return true;
 }