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- /*
- Minetest
- Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #ifndef SERIALIZATION_HEADER
- #define SERIALIZATION_HEADER
- #include "irrlichttypes.h"
- #include "exceptions.h"
- #include <iostream>
- #include "util/pointer.h"
- /*
- Map format serialization version
- --------------------------------
- For map data (blocks, nodes, sectors).
-
- NOTE: The goal is to increment this so that saved maps will be
- loadable by any version. Other compatibility is not
- maintained.
-
- 0: original networked test with 1-byte nodes
- 1: update with 2-byte nodes
- 2: lighting is transmitted in param
- 3: optional fetching of far blocks
- 4: block compression
- 5: sector objects NOTE: block compression was left accidentally out
- 6: failed attempt at switching block compression on again
- 7: block compression switched on again
- 8: server-initiated block transfers and all kinds of stuff
- 9: block objects
- 10: water pressure
- 11: zlib'd blocks, block flags
- 12: UnlimitedHeightmap now uses interpolated areas
- 13: Mapgen v2
- 14: NodeMetadata
- 15: StaticObjects
- 16: larger maximum size of node metadata, and compression
- 17: MapBlocks contain timestamp
- 18: new generator (not really necessary, but it's there)
- 19: new content type handling
- 20: many existing content types translated to extended ones
- 21: dynamic content type allocation
- 22: minerals removed, facedir & wallmounted changed
- 23: new node metadata format
- 24: 16-bit node ids and node timers (never released as stable)
- 25: Improved node timer format
- 26: Never written; read the same as 25
- */
- // This represents an uninitialized or invalid format
- #define SER_FMT_VER_INVALID 255
- // Highest supported serialization version
- #define SER_FMT_VER_HIGHEST_READ 26
- // Saved on disk version
- #define SER_FMT_VER_HIGHEST_WRITE 25
- // Lowest supported serialization version
- #define SER_FMT_VER_LOWEST 0
- #define ser_ver_supported(v) (v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST_READ)
- /*
- Misc. serialization functions
- */
- void compressZlib(SharedBuffer<u8> data, std::ostream &os, int level = -1);
- void compressZlib(const std::string &data, std::ostream &os, int level = -1);
- void decompressZlib(std::istream &is, std::ostream &os);
- // These choose between zlib and a self-made one according to version
- void compress(SharedBuffer<u8> data, std::ostream &os, u8 version);
- //void compress(const std::string &data, std::ostream &os, u8 version);
- void decompress(std::istream &is, std::ostream &os, u8 version);
- #endif
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