minetest/src/mapsector.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
#pragma once
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#include "irrlichttypes.h"
#include "irr_v2d.h"
#include "mapblock.h"
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#include <ostream>
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#include <map>
#include <vector>
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class Map;
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class IGameDef;
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/*
This is an Y-wise stack of MapBlocks.
*/
#define MAPSECTOR_SERVER 0
#define MAPSECTOR_CLIENT 1
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class MapSector
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{
public:
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MapSector(Map *parent, v2s16 pos, IGameDef *gamedef);
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virtual ~MapSector();
void deleteBlocks();
v2s16 getPos() const
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{
return m_pos;
}
MapBlock *getBlockNoCreateNoEx(s16 y);
std::unique_ptr<MapBlock> createBlankBlockNoInsert(s16 y);
MapBlock *createBlankBlock(s16 y);
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void insertBlock(std::unique_ptr<MapBlock> block);
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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(); }
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protected:
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// The pile of MapBlocks
std::unordered_map<s16, std::unique_ptr<MapBlock>> m_blocks;
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Map *m_parent;
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// Position on parent (in MapBlock widths)
v2s16 m_pos;
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IGameDef *m_gamedef;
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// 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;
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s16 m_block_cache_y;
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/*
Private methods
*/
MapBlock *getBlockBuffered(s16 y);
};