1 /*
2 Minetest
3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4 
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9 
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 GNU Lesser General Public License for more details.
14 
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19 
20 #pragma once
21 
22 #include <unordered_set>
23 #include "metadata.h"
24 
25 /*
26 	NodeMetadata stores arbitary amounts of data for special blocks.
27 	Used for furnaces, chests and signs.
28 
29 	There are two interaction methods: inventory menu and text input.
30 	Only one can be used for a single metadata, thus only inventory OR
31 	text input should exist in a metadata.
32 */
33 
34 class Inventory;
35 class IItemDefManager;
36 
37 class NodeMetadata : public Metadata
38 {
39 public:
40 	NodeMetadata(IItemDefManager *item_def_mgr);
41 	~NodeMetadata();
42 
43 	void serialize(std::ostream &os, u8 version, bool disk=true) const;
44 	void deSerialize(std::istream &is, u8 version);
45 
46 	void clear();
47 	bool empty() const;
48 
49 	// The inventory
getInventory()50 	Inventory *getInventory()
51 	{
52 		return m_inventory;
53 	}
54 
isPrivate(const std::string & name)55 	inline bool isPrivate(const std::string &name) const
56 	{
57 		return m_privatevars.count(name) != 0;
58 	}
59 	void markPrivate(const std::string &name, bool set);
60 
61 private:
62 	int countNonPrivate() const;
63 
64 	Inventory *m_inventory;
65 	std::unordered_set<std::string> m_privatevars;
66 };
67 
68 
69 /*
70 	List of metadata of all the nodes of a block
71 */
72 
73 typedef std::map<v3s16, NodeMetadata *> NodeMetadataMap;
74 
75 class NodeMetadataList
76 {
77 public:
78 	NodeMetadataList(bool is_metadata_owner = true) :
m_is_metadata_owner(is_metadata_owner)79 		m_is_metadata_owner(is_metadata_owner)
80 	{}
81 
82 	~NodeMetadataList();
83 
84 	void serialize(std::ostream &os, u8 blockver, bool disk = true,
85 		bool absolute_pos = false) const;
86 	void deSerialize(std::istream &is, IItemDefManager *item_def_mgr,
87 		bool absolute_pos = false);
88 
89 	// Add all keys in this list to the vector keys
90 	std::vector<v3s16> getAllKeys();
91 	// Get pointer to data
92 	NodeMetadata *get(v3s16 p);
93 	// Deletes data
94 	void remove(v3s16 p);
95 	// Deletes old data and sets a new one
96 	void set(v3s16 p, NodeMetadata *d);
97 	// Deletes all
98 	void clear();
99 
size()100 	size_t size() const { return m_data.size(); }
101 
begin()102 	NodeMetadataMap::const_iterator begin()
103 	{
104 		return m_data.begin();
105 	}
106 
end()107 	NodeMetadataMap::const_iterator end()
108 	{
109 		return m_data.end();
110 	}
111 
112 private:
113 	int countNonEmpty() const;
114 
115 	bool m_is_metadata_owner;
116 	NodeMetadataMap m_data;
117 };
118