92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/************************************************************************
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* Minetest-c55
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* Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
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*
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* serialization.h
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* voxelands - 3d voxel world sandbox game
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* Copyright (C) Lisa 'darkrose' Milne 2014 <lisa@ltmnet.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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* License updated from GPLv2 or later to GPLv3 or later by Lisa Milne
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* for Voxelands.
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************************************************************************/
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#ifndef SERIALIZATION_HEADER
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#define SERIALIZATION_HEADER
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#include "common_irrlicht.h"
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#include "exceptions.h"
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#include <iostream>
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#include "utility.h"
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/*
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Map format serialization version
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--------------------------------
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For map data (blocks, nodes, sectors).
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NOTE: The goal is to increment this so that saved maps will be
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loadable by any version. Other compatibility is not
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maintained.
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0: original networked test with 1-byte nodes
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1: update with 2-byte nodes
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2: lighting is transmitted in param
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3: optional fetching of far blocks
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4: block compression
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5: sector objects NOTE: block compression was left accidentally out
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6: failed attempt at switching block compression on again
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7: block compression switched on again
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8: server-initiated block transfers and all kinds of stuff
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9: block objects
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10: water pressure
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11: zlib'd blocks, block flags
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12: UnlimitedHeightmap now uses interpolated areas
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13: Mapgen v2
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14: NodeMetadata
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15: StaticObjects
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16: larger maximum size of node metadata, and compression
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17: MapBlocks contain timestamp
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18: new generator (not really necessary, but it's there)
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19: new content type handling
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20: many existing content types translated to extended ones
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21: u8 param0 replaced with content_t content
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22: added biome id
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*/
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// This represents an uninitialized or invalid format
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#define SER_FMT_VER_INVALID 255
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// Highest supported serialization version
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#define SER_FMT_VER_HIGHEST 22
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// Lowest supported serialization version
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#define SER_FMT_VER_LOWEST 20
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#define ser_ver_supported(v) (v >= SER_FMT_VER_LOWEST && v <= SER_FMT_VER_HIGHEST)
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/*
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Misc. serialization functions
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*/
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void compressZlib(SharedBuffer<u8> data, std::ostream &os);
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void compressZlib(const std::string &data, std::ostream &os);
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void decompressZlib(std::istream &is, std::ostream &os);
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// These choose between zlib and a self-made one according to version
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void compress(SharedBuffer<u8> data, std::ostream &os, u8 version);
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//void compress(const std::string &data, std::ostream &os, u8 version);
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void decompress(std::istream &is, std::ostream &os, u8 version);
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#endif
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