Line data Source code
1 : /*
2 : Minetest
3 : Copyright (C) 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 : #include "mapsector.h"
21 : #include "exceptions.h"
22 : #include "mapblock.h"
23 : #include "serialization.h"
24 :
25 244 : MapSector::MapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
26 : differs_from_disk(false),
27 : m_parent(parent),
28 : m_pos(pos),
29 : m_gamedef(gamedef),
30 244 : m_block_cache(NULL)
31 : {
32 244 : }
33 :
34 488 : MapSector::~MapSector()
35 : {
36 244 : deleteBlocks();
37 244 : }
38 :
39 244 : void MapSector::deleteBlocks()
40 : {
41 : // Clear cache
42 244 : m_block_cache = NULL;
43 :
44 : // Delete all
45 2985 : for(std::map<s16, MapBlock*>::iterator i = m_blocks.begin();
46 1990 : i != m_blocks.end(); ++i)
47 : {
48 751 : delete i->second;
49 : }
50 :
51 : // Clear container
52 244 : m_blocks.clear();
53 244 : }
54 :
55 2298900 : MapBlock * MapSector::getBlockBuffered(s16 y)
56 : {
57 : MapBlock *block;
58 :
59 2298900 : if(m_block_cache != NULL && y == m_block_cache_y){
60 1885974 : return m_block_cache;
61 : }
62 :
63 : // If block doesn't exist, return NULL
64 412926 : std::map<s16, MapBlock*>::iterator n = m_blocks.find(y);
65 412926 : if(n == m_blocks.end())
66 : {
67 131651 : block = NULL;
68 : }
69 : // If block exists, return it
70 : else{
71 281275 : block = n->second;
72 : }
73 :
74 : // Cache the last result
75 412926 : m_block_cache_y = y;
76 412926 : m_block_cache = block;
77 :
78 412926 : return block;
79 : }
80 :
81 2298149 : MapBlock * MapSector::getBlockNoCreateNoEx(s16 y)
82 : {
83 2298149 : return getBlockBuffered(y);
84 : }
85 :
86 0 : MapBlock * MapSector::createBlankBlockNoInsert(s16 y)
87 : {
88 : assert(getBlockBuffered(y) == NULL); // Pre-condition
89 :
90 0 : v3s16 blockpos_map(m_pos.X, y, m_pos.Y);
91 :
92 0 : MapBlock *block = new MapBlock(m_parent, blockpos_map, m_gamedef);
93 :
94 0 : return block;
95 : }
96 :
97 0 : MapBlock * MapSector::createBlankBlock(s16 y)
98 : {
99 0 : MapBlock *block = createBlankBlockNoInsert(y);
100 :
101 0 : m_blocks[y] = block;
102 :
103 0 : return block;
104 : }
105 :
106 751 : void MapSector::insertBlock(MapBlock *block)
107 : {
108 751 : s16 block_y = block->getPos().Y;
109 :
110 751 : MapBlock *block2 = getBlockBuffered(block_y);
111 751 : if(block2 != NULL){
112 0 : throw AlreadyExistsException("Block already exists");
113 : }
114 :
115 751 : v2s16 p2d(block->getPos().X, block->getPos().Z);
116 : assert(p2d == m_pos);
117 :
118 : // Insert into container
119 751 : m_blocks[block_y] = block;
120 751 : }
121 :
122 0 : void MapSector::deleteBlock(MapBlock *block)
123 : {
124 0 : s16 block_y = block->getPos().Y;
125 :
126 : // Clear from cache
127 0 : m_block_cache = NULL;
128 :
129 : // Remove from container
130 0 : m_blocks.erase(block_y);
131 :
132 : // Delete
133 0 : delete block;
134 0 : }
135 :
136 21931 : void MapSector::getBlocks(MapBlockVect &dest)
137 : {
138 261714 : for(std::map<s16, MapBlock*>::iterator bi = m_blocks.begin();
139 174476 : bi != m_blocks.end(); ++bi)
140 : {
141 65307 : dest.push_back(bi->second);
142 : }
143 21931 : }
144 :
145 : /*
146 : ServerMapSector
147 : */
148 :
149 0 : ServerMapSector::ServerMapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
150 0 : MapSector(parent, pos, gamedef)
151 : {
152 0 : }
153 :
154 0 : ServerMapSector::~ServerMapSector()
155 : {
156 0 : }
157 :
158 0 : void ServerMapSector::serialize(std::ostream &os, u8 version)
159 : {
160 0 : if(!ser_ver_supported(version))
161 0 : throw VersionMismatchException("ERROR: MapSector format not supported");
162 :
163 : /*
164 : [0] u8 serialization version
165 : + heightmap data
166 : */
167 :
168 : // Server has both of these, no need to support not having them.
169 : //assert(m_objects != NULL);
170 :
171 : // Write version
172 0 : os.write((char*)&version, 1);
173 :
174 : /*
175 : Add stuff here, if needed
176 : */
177 :
178 0 : }
179 :
180 0 : ServerMapSector* ServerMapSector::deSerialize(
181 : std::istream &is,
182 : Map *parent,
183 : v2s16 p2d,
184 : std::map<v2s16, MapSector*> & sectors,
185 : IGameDef *gamedef
186 : )
187 : {
188 : /*
189 : [0] u8 serialization version
190 : + heightmap data
191 : */
192 :
193 : /*
194 : Read stuff
195 : */
196 :
197 : // Read version
198 0 : u8 version = SER_FMT_VER_INVALID;
199 0 : is.read((char*)&version, 1);
200 :
201 0 : if(!ser_ver_supported(version))
202 0 : throw VersionMismatchException("ERROR: MapSector format not supported");
203 :
204 : /*
205 : Add necessary reading stuff here
206 : */
207 :
208 : /*
209 : Get or create sector
210 : */
211 :
212 0 : ServerMapSector *sector = NULL;
213 :
214 0 : std::map<v2s16, MapSector*>::iterator n = sectors.find(p2d);
215 :
216 0 : if(n != sectors.end())
217 : {
218 : dstream<<"WARNING: deSerializing existent sectors not supported "
219 0 : "at the moment, because code hasn't been tested."
220 0 : <<std::endl;
221 :
222 0 : MapSector *sector = n->second;
223 : assert(sector->getId() == MAPSECTOR_SERVER);
224 0 : return (ServerMapSector*)sector;
225 : }
226 : else
227 : {
228 0 : sector = new ServerMapSector(parent, p2d, gamedef);
229 0 : sectors[p2d] = sector;
230 : }
231 :
232 : /*
233 : Set stuff in sector
234 : */
235 :
236 : // Nothing here
237 :
238 0 : return sector;
239 : }
240 :
241 : #ifndef SERVER
242 : /*
243 : ClientMapSector
244 : */
245 :
246 244 : ClientMapSector::ClientMapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
247 244 : MapSector(parent, pos, gamedef)
248 : {
249 244 : }
250 :
251 488 : ClientMapSector::~ClientMapSector()
252 : {
253 491 : }
254 :
255 : #endif // !SERVER
256 :
257 : //END
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