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authorShadowNinja <shadowninja@minetest.net>2014-11-21 11:32:01 -0500
committerest31 <MTest31@outlook.com>2015-04-21 22:58:37 +0200
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/*
Minetest
Copyright (C) 2014-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2015-2018 paramat

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.
*/

#pragma once

#include <map>
#include "mg_decoration.h"
#include "util/string.h"

class Map;
class ServerMap;
class Mapgen;
class MMVManip;
class PseudoRandom;
class NodeResolver;
class Server;

/*
	Minetest Schematic File Format

	All values are stored in big-endian byte order.
	[u32] signature: 'MTSM'
	[u16] version: 4
	[u16] size X
	[u16] size Y
	[u16] size Z
	For each Y:
		[u8] slice probability value
	[Name-ID table] Name ID Mapping Table
		[u16] name-id count
		For each name-id mapping:
			[u16] name length
			[u8[]] name
	ZLib deflated {
	For each node in schematic:  (for z, y, x)
		[u16] content
	For each node in schematic:
		[u8] param1
		  bit 0-6: probability
		  bit 7:   specific node force placement
	For each node in schematic:
		[u8] param2
	}

	Version changes:
	1 - Initial version
	2 - Fixed messy never/always place; 0 probability is now never, 0xFF is always
	3 - Added y-slice probabilities; this allows for variable height structures
	4 - Compressed range of node occurence prob., added per-node force placement bit
*/

//// Schematic constants
#define MTSCHEM_FILE_SIGNATURE 0x4d54534d // 'MTSM'
#define MTSCHEM_FILE_VER_HIGHEST_READ  4
#define MTSCHEM_FILE_VER_HIGHEST_WRITE 4

#define MTSCHEM_PROB_MASK       0x7F

#define MTSCHEM_PROB_NEVER      0x00
#define MTSCHEM_PROB_ALWAYS     0x7F
#define MTSCHEM_PROB_ALWAYS_OLD 0xFF

#define MTSCHEM_FORCE_PLACE     0x80

enum SchematicType
{
	SCHEMATIC_NORMAL,
};

enum SchematicFormatType {
	SCHEM_FMT_HANDLE,
	SCHEM_FMT_MTS,
	SCHEM_FMT_LUA,
};

class Schematic : public ObjDef, public NodeResolver {
public:
	Schematic() = default;
	virtual ~Schematic();

	ObjDef *clone() const;

	virtual void resolveNodeNames();