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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.
*/
#include "mapsector.h"
#include "exceptions.h"
#include "mapblock.h"
#include "serialization.h"
MapSector::MapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
differs_from_disk(false),
m_parent(parent),
m_pos(pos),
m_gamedef(gamedef),
m_block_cache(NULL)
{
}
MapSector::~MapSector()
{
deleteBlocks();
}
void MapSector::deleteBlocks()
{
// Clear cache
m_block_cache = NULL;
// Delete all
for (UNORDERED_MAP<s16, MapBlock*>::iterator i = m_blocks.begin();
i != m_blocks.end(); ++i) {
delete i->second;
}
// Clear container
m_blocks.clear();
}
MapBlock * MapSector::getBlockBuffered(s16 y)
{
MapBlock *block;
if (m_block_cache != NULL && y == m_block_cache_y) {
return m_block_cache;
}
// If block doesn't exist, return NULL
UNORDERED_MAP<s16, MapBlock*>::iterator n = m_blocks.find(y);
block = (n != m_blocks.end() ? n->second : NULL);
// Cache the last result
m_block_cache_y = y;
m_block_cache = block;
return block;
}
MapBlock * MapSector::getBlockNoCreateNoEx(s16 y)
{
return getBlockBuffered(y);
}
MapBlock * MapSector::createBlankBlockNoInsert(s16 y)
{
assert(getBlockBuffered(y) == NULL); // Pre-condition
v3s16 blockpos_map(m_pos.X, y, m_pos.Y);
MapBlock *block = new MapBlock(m_parent, blockpos_map, m_gamedef);
return block;
}
MapBlock * MapSector::createBlankBlock(s16 y)
{
MapBlock *block = createBlankBlockNoInsert(y);
m_blocks[y] = block;
return block;
}
void MapSector::insertBlock(MapBlock *block)
{
s16 block_y = block->getPos().Y;
MapBlock *block2 = getBlockBuffered(block_y);
if(block2 != NULL){
throw AlreadyExistsException("Block already exists");
}
v2s16 p2d(block->getPos().X, block->getPos().Z);
assert(p2d == m_pos);
// Insert into container
m_blocks[block_y] = block;
}
void MapSector::deleteBlock(MapBlock *block)
{
s16 block_y = block->getPos().Y;
// Clear from cache
m_block_cache = NULL;
// Remove from container
m_blocks.erase(block_y);
// Delete
delete block;
}
void MapSector::getBlocks(MapBlockVect &dest)
{
for (UNORDERED_MAP<s16, MapBlock*>::iterator bi = m_blocks.begin();
bi != m_blocks.end(); ++bi) {
dest.push_back(bi->second);
}
}
/*
ServerMapSector
*/
ServerMapSector::ServerMapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
MapSector(parent, pos, gamedef)
{
}
ServerMapSector::~ServerMapSector()
{
}
void ServerMapSector::serialize(std::ostream &os, u8 version)
{
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapSector format not supported");
/*
[0] u8 serialization version
+ heightmap data
*/
// Server has both of these, no need to support not having them.
//assert(m_objects != NULL);
// Write version
os.write((char*)&version, 1);
/*
Add stuff here, if needed
*/
}
ServerMapSector* ServerMapSector::deSerialize(
std::istream &is,
Map *parent,
v2s16 p2d,
std::map<v2s16, MapSector*> & sectors,
IGameDef *gamedef
)
{
/*
[0] u8 serialization version
+ heightmap data
*/
/*
Read stuff
*/
// Read version
u8 version = SER_FMT_VER_INVALID;
is.read((char*)&version, 1);
if(!ser_ver_supported(version))
throw VersionMismatchException("ERROR: MapSector format not supported");
/*
Add necessary reading stuff here
*/
/*
Get or create sector
*/
ServerMapSector *sector = NULL;
std::map<v2s16, MapSector*>::iterator n = sectors.find(p2d);
if(n != sectors.end())
{
warningstream<<"deSerializing existent sectors not supported "
"at the moment, because code hasn't been tested."
<<std::endl;
MapSector *sector = n->second;
assert(sector->getId() == MAPSECTOR_SERVER);
return (ServerMapSector*)sector;
}
else
{
sector = new ServerMapSector(parent, p2d, gamedef);
sectors[p2d] = sector;
}
/*
Set stuff in sector
*/
// Nothing here
return sector;
}
#ifndef SERVER
/*
ClientMapSector
*/
ClientMapSector::ClientMapSector(Map *parent, v2s16 pos, IGameDef *gamedef):
MapSector(parent, pos, gamedef)
{
}
ClientMapSector::~ClientMapSector()
{
}
#endif // !SERVER
//END
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