AreaStore Class Reference

#include <areastore.h>

Inheritance diagram for AreaStore:

Collaboration diagram for AreaStore:

Public Member Functions
	AreaStore ()
virtual	~AreaStore ()=default
virtual void	reserve (size_t count)
size_t	size () const
virtual bool	insertArea (Area *a)=0
	Add an area to the store. More...
virtual bool	removeArea (u32 id)=0
	Removes an area from the store by ID. More...
void	getAreasForPos (std::vector< Area * > *result, v3s16 pos)
	Finds areas that the passed position is contained in. More...
virtual void	getAreasInArea (std::vector< Area * > *result, v3s16 minedge, v3s16 maxedge, bool accept_overlap)=0
	Finds areas that are completely contained inside the area defined by the passed edges. More...
void	setCacheParams (bool enabled, u8 block_radius, size_t limit)
	Sets cache parameters. More...
const Area *	getArea (u32 id) const
	Returns a pointer to the area coresponding to the passed ID, or NULL if it doesn't exist. More...
void	serialize (std::ostream &is) const
	Serializes the store's areas to a binary ostream. More...
void	deserialize (std::istream &is)
	Deserializes the Areas from a binary istream. More...

Static Public Member Functions
static AreaStore *	getOptimalImplementation ()

Protected Types
typedef std::map< u32, Area >	AreaMap

Protected Member Functions
void	invalidateCache ()
	Invalidates the getAreasForPos cache. More...
virtual void	getAreasForPosImpl (std::vector< Area * > *result, v3s16 pos)=0
	Implementation of getAreasForPos. More...
u32	getNextId () const
	Returns the next area ID and increments it. More...

Protected Attributes
AreaMap	areas_map

Static Private Member Functions
static void	cacheMiss (void *data, const v3s16 &mpos, std::vector< Area * > *dest)
	Called by the cache when a value isn't found in the cache. More...

Private Attributes
bool	m_cache_enabled = true
u8	m_cacheblock_radius = 64
	Range, in nodes, of the getAreasForPos cache. More...
LRUCache< v3s16, std::vector< Area * > >	m_res_cache

Member Typedef Documentation

AreaMap

typedef std::map<u32, Area> AreaStore::AreaMap

protected

Constructor & Destructor Documentation

AreaStore()

AreaStore::AreaStore ( )

inline

~AreaStore()

virtual AreaStore::~AreaStore ( )

virtualdefault

Member Function Documentation

cacheMiss()

void AreaStore::cacheMiss ( void *  data, const v3s16 &  mpos, std::vector< Area * > *  dest  )

staticprivate

Called by the cache when a value isn't found in the cache.

References getAreasInArea(), and m_cacheblock_radius.

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deserialize()

void AreaStore::deserialize

(

std::istream &

is

)

Deserializes the Areas from a binary istream.

This does not currently clear the AreaStore before adding the areas, making it possible to deserialize multiple serialized AreaStores.

References Area::data, insertArea(), Area::maxedge, Area::minedge, readU16(), readU32(), readU8(), readV3S16(), and U32_MAX.

Referenced by deserialization_helper(), and TestAreaStore::testSerialization().

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getArea()

const Area * AreaStore::getArea

(

u32

id

)

const

Returns a pointer to the area coresponding to the passed ID, or NULL if it doesn't exist.

References areas_map.

Referenced by LuaAreaStore::l_get_area().

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getAreasForPos()

void AreaStore::getAreasForPos	(	std::vector< Area * > *	result,
		v3s16	pos
	)

Finds areas that the passed position is contained in.

Stores output in passed vector.

References AST_CONTAINS_PT, getAreasForPosImpl(), getContainerPos(), LRUCache< K, V >::lookupCache(), m_cache_enabled, m_cacheblock_radius, and m_res_cache.

Referenced by TestAreaStore::genericStoreTest(), and LuaAreaStore::l_get_areas_for_pos().

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getAreasForPosImpl()

virtual void AreaStore::getAreasForPosImpl ( std::vector< Area * > *  result, v3s16  pos  )

protectedpure virtual

Implementation of getAreasForPos.

getAreasForPos calls this if the cache is disabled.

Implemented in SpatialAreaStore, and VectorAreaStore.

Referenced by getAreasForPos().

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getAreasInArea()

virtual void AreaStore::getAreasInArea ( std::vector< Area * > *  result, v3s16  minedge, v3s16  maxedge, bool  accept_overlap  )

pure virtual

Finds areas that are completely contained inside the area defined by the passed edges.

If accept_overlap is true this finds any areas that intersect with the passed area at any point.

Implemented in SpatialAreaStore, and VectorAreaStore.

Referenced by cacheMiss(), TestAreaStore::genericStoreTest(), and LuaAreaStore::l_get_areas_in_area().

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getNextId()

u32 AreaStore::getNextId ( ) const

protected

Returns the next area ID and increments it.

References areas_map.

Referenced by VectorAreaStore::insertArea(), and SpatialAreaStore::insertArea().

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getOptimalImplementation()

AreaStore * AreaStore::getOptimalImplementation ( )

static

insertArea()

virtual bool AreaStore::insertArea ( Area *  a )

pure virtual

Add an area to the store.

Updates the area's ID if it hasn't already been set.

Returns

Whether the area insertion was successful.

Implemented in SpatialAreaStore, and VectorAreaStore.

Referenced by deserialize(), TestAreaStore::genericStoreTest(), and LuaAreaStore::l_insert_area().

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invalidateCache()

void AreaStore::invalidateCache ( )

protected

Invalidates the getAreasForPos cache.

Call after adding or removing an area.

References LRUCache< K, V >::invalidate(), m_cache_enabled, and m_res_cache.

Referenced by VectorAreaStore::insertArea(), SpatialAreaStore::insertArea(), VectorAreaStore::removeArea(), SpatialAreaStore::removeArea(), and setCacheParams().

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removeArea()

virtual bool AreaStore::removeArea ( u32  id )

pure virtual

Removes an area from the store by ID.

Returns

Whether the area was in the store and removed.

Implemented in SpatialAreaStore, and VectorAreaStore.

Referenced by TestAreaStore::genericStoreTest(), and LuaAreaStore::l_remove_area().

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reserve()

virtual void AreaStore::reserve ( size_t  count )

inlinevirtual

Reimplemented in VectorAreaStore.

Referenced by TestAreaStore::genericStoreTest(), and LuaAreaStore::l_reserve().

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serialize()

void AreaStore::serialize

(

std::ostream &

is

)

const

Serializes the store's areas to a binary ostream.

References areas_map, Area::data, Area::maxedge, Area::minedge, writeU16(), writeU32(), writeU8(), and writeV3S16().

Referenced by LuaAreaStore::l_to_file(), LuaAreaStore::l_to_string(), and TestAreaStore::testSerialization().

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setCacheParams()

void AreaStore::setCacheParams	(	bool	enabled,
		u8	block_radius,
		size_t	limit
	)

Sets cache parameters.

References invalidateCache(), m_cache_enabled, m_cacheblock_radius, m_res_cache, MYMAX, and LRUCache< K, V >::setLimit().

Referenced by LuaAreaStore::l_set_cache_params().

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size()

size_t AreaStore::size ( ) const

inline

References areas_map.

Referenced by TestAreaStore::genericStoreTest(), and TestAreaStore::testSerialization().

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Member Data Documentation

areas_map

AreaMap AreaStore::areas_map

protected

Referenced by getArea(), getNextId(), VectorAreaStore::insertArea(), SpatialAreaStore::insertArea(), VectorAreaStore::removeArea(), SpatialAreaStore::removeArea(), serialize(), size(), and SpatialAreaStore::VectorResultVisitor::visitData().

m_cache_enabled

bool AreaStore::m_cache_enabled = true

private

Referenced by getAreasForPos(), invalidateCache(), and setCacheParams().

m_cacheblock_radius

u8 AreaStore::m_cacheblock_radius = 64

private

Range, in nodes, of the getAreasForPos cache.

If you modify this, call invalidateCache()

Referenced by cacheMiss(), getAreasForPos(), and setCacheParams().

m_res_cache

LRUCache<v3s16, std::vector<Area *> > AreaStore::m_res_cache

private

Referenced by getAreasForPos(), invalidateCache(), and setCacheParams().

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The documentation for this class was generated from the following files:

• util/areastore.h
• util/areastore.cpp