Blockscape File format 
 Version 5 (beta)
 Copyright 2012 ioneo



 Information
--------------------------------------------------------


 The format is chunk based.

 The format is designed to always be backwards 
 compatible and forward compatible when possible.
  
 All chunks (except the Blockscape chunk!) have the 
 following layout:

 +---------------------------+
 | id      | ushort          |
 +---------+-----------------+
 | length  | int             |
 +---------+-----------------+
 | data    |                 |
 +---------+-----------------+

 Value of length is the length of the chunk excluding
 the length of id and length.

 The length field makes it possible for applications to 
 read only those chunks it knows or is interested in
 and skip other chunks.


 Chunks
--------------------------------------------------------


 Blockscape
 ----------

 This chunk is special because it has no length.
 This chunk is the only chunk that is required. 
 This chunk must be the first chunk in the file.

   type      name      value          
 +---------+---------+--------+
 | ushort  | id      | 0      |
 +---------+---------+--------+
 | int     | version | 4      |
 +---------+---------+--------+


 World type
 ----------

   type      name      value          
 +---------+---------+----------------------+
 | ushort  | id      | 9                    |
 +---------+---------+----------------------+
 | int     | length  | 4                    | 
 +---------+---------+----------------------+
 | int     | type    | 0 = Normal           |
 |         |         | 1 = Infinte plane    |
 +---------+---------+----------------------+


 Name
 ----

   type       name      value          
 +----------+---------+----------------------+
 | ushort   | id      | 3                    |
 +----------+---------+----------------------+
 | int      | length  | 16                   | 
 +----------+---------+----------------------+
 | byte[16] | name    |                      |
 +----------+---------+----------------------+


 World seed
 ----------

   type       name      value          
 +----------+---------+----------------------+
 | ushort   | id      | 8                    |
 +----------+---------+----------------------+
 | int      | length  | 4                    | 
 +----------+---------+----------------------+
 | int      | seed    |                      |
 +----------+---------+----------------------+


 Player position
 ---------------

   type       name      value          
 +----------+---------+----------------------+
 | ushort   | id      | 1                    |
 +----------+---------+----------------------+
 | int      | length  | 3*8                  | 
 +----------+---------+----------------------+
 | double   | x       |                      |
 +----------+---------+----------------------+
 | double   | y       |                      |
 +----------+---------+----------------------+
 | double   | z       |                      |
 +----------+---------+----------------------+


 Game type
 ---------

   type      name      value          
 +---------+---------+----------------------+
 | ushort  | id      | 7                    |
 +---------+---------+----------------------+
 | int     | length  | 1                    | 
 +---------+---------+----------------------+
 | byte    | type    | 0 = Normal           |
 |         |         | 1 = God              |
 +---------+---------+----------------------+


 World chunk
 -----------

 This chunk contains sub chunks.

   type       name      value          
 +----------+---------+----------------------+
 | ushort   | id      | 2                    |
 +----------+---------+----------------------+
 | int      | length  | n                    | 
 +----------+---------+----------------------+
 | ...      | ...     | ...                  |
 +----------+---------+----------------------+


 World Chunk Position
 --------------------

 parent: World chunk

 Is the first Chunk in each WorldChunk
 Specifies the Position of the World Chunk in the world chunk 3d grid

   type       name      value          
 +----------+---------+----------------------+
 | ushort   | id      | 12                   |
 +----------+---------+----------------------+
 | int      | length  | 3*4                  | 
 +----------+---------+----------------------+
 | int      | x       |                      |
 +----------+---------+----------------------+
 | int      | y       |                      |
 +----------+---------+----------------------+
 | int      | z       |                      |
 +----------+---------+----------------------+


 Block layer
 -----------

 parent: World chunk

 This chunk represents one horizontal slice of a 
 world chunk.

   type           name      value          
 +--------------+---------+----------------------+
 | ushort       | id      | 13                   |
 +--------------+---------+----------------------+
 | int          | length  | 1+2*32^2             | 
 +--------------+---------+----------------------+
 | int          | y       | relative y position  |
 +--------------+---------+----------------------+
 | byte[2*32^2] | blocks  | *                    |
 +--------------+---------+----------------------+

 * Every block is represented by 2 bytes. 
   byte 0: 00xx xxxx is the block type
	 byte 1: 0xxx xxxx is the block material
	 
 
 Block layer 2
 -----------

 parent: World chunk

 This chunk represents one horizontal slice of a 
 world chunk.

   type           name      value          
 +--------------+---------+----------------------+
 | ushort       | id      | 13                   |
 +--------------+---------+----------------------+
 | int          | length  | 1+2*32^2             | 
 +--------------+---------+----------------------+
 | int          | y       | relative y position  |
 +--------------+---------+----------------------+
 | byte[2*32^2] | blocks  | *                    |
 +--------------+---------+----------------------+

 * Every block is represented by 3 bytes. 
   byte 0: 00xx xxxx is the block type
	 byte 1: 0xxx xxxx is the block material
	 byte 2: xxxx 0000 is the fluid type
	 byte 2: 0000 xxxx is the fluid value