minetest/src/mapsector.h
lhofhansl 4bf95703a0
Allow access into MapSector::m_blocks (#14232)
* New API to allow access into MapSector::m_blocks
* Use this API on ClientMap::touchMapBlocks(), ClientMap::updateDrawList(), and ClientMap::updateDrawListShadow() to speed them up
2024-01-10 09:17:26 -08:00

100 lines
2.5 KiB
C++

/*
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.
*/
#pragma once
#include "irrlichttypes.h"
#include "irr_v2d.h"
#include "mapblock.h"
#include <ostream>
#include <map>
#include <vector>
class Map;
class IGameDef;
/*
This is an Y-wise stack of MapBlocks.
*/
#define MAPSECTOR_SERVER 0
#define MAPSECTOR_CLIENT 1
class MapSector
{
public:
MapSector(Map *parent, v2s16 pos, IGameDef *gamedef);
virtual ~MapSector();
void deleteBlocks();
v2s16 getPos() const
{
return m_pos;
}
MapBlock *getBlockNoCreateNoEx(s16 y);
std::unique_ptr<MapBlock> createBlankBlockNoInsert(s16 y);
MapBlock *createBlankBlock(s16 y);
void insertBlock(std::unique_ptr<MapBlock> block);
void deleteBlock(MapBlock *block);
// Remove a block from the map and the sector without deleting it
// Returns an owning ptr to block.
std::unique_ptr<MapBlock> detachBlock(MapBlock *block);
// This makes a copy of the internal collection.
// Prefer getBlocks() if possible.
void getBlocks(MapBlockVect &dest);
// Get access to the internal collection
// This is explicitly only allowed on a const object since modifying anything while iterating is unsafe.
// The caller needs to make sure that this does not happen.
const auto &getBlocks() const { return m_blocks; }
const auto &getBlocks() = delete;
bool empty() const { return m_blocks.empty(); }
int size() const { return m_blocks.size(); }
protected:
// The pile of MapBlocks
std::unordered_map<s16, std::unique_ptr<MapBlock>> m_blocks;
Map *m_parent;
// Position on parent (in MapBlock widths)
v2s16 m_pos;
IGameDef *m_gamedef;
// Last-used block is cached here for quicker access.
// Be sure to set this to nullptr when the cached block is deleted
MapBlock *m_block_cache = nullptr;
s16 m_block_cache_y;
/*
Private methods
*/
MapBlock *getBlockBuffered(s16 y);
};