Public Member Functions
	GridNode (AstarPath astar)

override void	AddConnection (GraphNode node, uint cost)
	Add a connection from this node to the specified node.

override void	ClearConnections (bool alsoReverse)
	Remove all connections from this node.

Vector3	ClosestPointOnNode (Vector3 p)

override void	DeserializeNode (GraphSerializationContext ctx)

override void	FloodFill (Stack< GraphNode > stack, uint region)

bool	GetConnectionInternal (int dir)
	Returns true if the node has a connection in the specified direction.

override void	GetConnections (GraphNodeDelegate del)
	Calls the delegate with all connections from this node.

override bool	GetPortal (GraphNode other, List< Vector3 > left, List< Vector3 > right, bool backwards)
	Add a portal from this node to the specified node.

override void	Open (Path path, PathNode pathNode, PathHandler handler)
	Open the node.

override void	RemoveConnection (GraphNode node)
	Removes any connection from this node to the specified node.

void	ResetConnectionsInternal ()
	Disables all grid connections from this node.

override void	SerializeNode (GraphSerializationContext ctx)

void	SetAllConnectionInternal (int connections)
	Sets the state of all grid connections.

void	SetConnectionInternal (int dir, bool value)
	Enables or disables a connection in a specified direction on the graph.

override void	UpdateRecursiveG (Path path, PathNode pathNode, PathHandler handler)

Static Public Member Functions
static GridGraph	GetGridGraph (uint graphIndex)

static void	SetGridGraph (int graphIndex, GridGraph graph)

Public Attributes
uint[]	connectionCosts

GraphNode[]	connections

Protected Attributes
ushort	gridFlags

Protected Attributes inherited from GridNodeBase
int	nodeInGridIndex

Protected Attributes inherited from GraphNode
uint	flags
	Bitpacked field holding several pieces of data.

Properties
bool	EdgeNode `[get, set]`

ushort	InternalGridFlags `[get, set]`
	Internal use only.

bool	TmpWalkable `[get, set]`
	Temporary variable used by graph updating.

bool	WalkableErosion `[get, set]`
	Stores walkability before erosion is applied.

Properties inherited from GridNodeBase
int	NodeInGridIndex `[get, set]`
	The index of the node in the grid.

Properties inherited from GraphNode
uint	Area `[get, set]`

bool	Destroyed `[get]`

uint	Flags `[get, set]`
	Holds various bitpacked variables.

uint	GraphIndex `[get, set]`

int	NodeIndex `[get]`
	Internal unique index.

uint	Penalty `[get, set]`
	Penalty cost for walking on this node.

uint	Tag `[get, set]`

bool	Walkable `[get, set]`
	True if the node is traversable.

Private Attributes
const int	GridFlagsConnectionBit0 = 1 << GridFlagsConnectionOffset

const int	GridFlagsConnectionMask = 0xFF << GridFlagsConnectionOffset

const int	GridFlagsConnectionOffset = 0

const int	GridFlagsEdgeNodeMask = 1 << GridFlagsEdgeNodeOffset

const int	GridFlagsEdgeNodeOffset = 10

const int	GridFlagsWalkableErosionMask = 1 << GridFlagsWalkableErosionOffset

const int	GridFlagsWalkableErosionOffset = 8

const int	GridFlagsWalkableTmpMask = 1 << GridFlagsWalkableTmpOffset

const int	GridFlagsWalkableTmpOffset = 9

Static Private Attributes
static GridGraph[]	_gridGraphs = new GridGraph[0]

Additional Inherited Members
Protected Member Functions inherited from GridNodeBase
	GridNodeBase (AstarPath astar)

Constructor & Destructor Documentation

GridNode ( AstarPath astar )

Member Function Documentation

override void AddConnection	(	GraphNode	node,
		uint	cost
	)

virtual

Add a connection from this node to the specified node.

If the connection already exists, the cost will simply be updated and no extra connection added.

Note: Only adds a one-way connection. Consider calling the same function on the other node to get a two-way connection.

Implements GraphNode.

override void ClearConnections ( bool alsoReverse )

virtual

Remove all connections from this node.

Parameters

alsoReverse if true, neighbours will be requested to remove connections to this node.

Implements GraphNode.

Vector3 ClosestPointOnNode ( Vector3 p )

override void DeserializeNode ( GraphSerializationContext ctx )

virtual

Reimplemented from GraphNode.

override void FloodFill	(	Stack< GraphNode >	stack,
		uint	region
	)

virtual

Reimplemented from GraphNode.

bool GetConnectionInternal ( int dir )

Returns true if the node has a connection in the specified direction.

The dir parameter corresponds to directions in the grid as:

[0] = -Y
[1] = +X
[2] = +Y
[3] = -X
[4] = -Y+X
[5] = +Y+X
[6] = +Y-X
[7] = -Y-X

See Also: SetConnectionInternal

override void GetConnections ( GraphNodeDelegate del )

virtual

Calls the delegate with all connections from this node.

Implements GraphNode.

static GridGraph GetGridGraph ( uint graphIndex )

static

override bool GetPortal	(	GraphNode	other,
		List< Vector3 >	left,
		List< Vector3 >	right,
		bool	backwards
	)

virtual

Add a portal from this node to the specified node.

This function should add a portal to the left and right lists which is connecting the two nodes (this and other).

Parameters

other	The node which is on the other side of the portal (strictly speaking it does not actually have to be on the other side of the portal though).
left	List of portal points on the left side of the funnel
right	List of portal points on the right side of the funnel
backwards	If this is true, the call was made on a node with the other node as the node before this one in the path. In this case you may choose to do nothing since a similar call will be made to the other node with this node referenced as other (but then with backwards = true). You do not have to care about switching the left and right lists, that is done for you already.

Returns: True if the call was deemed successful. False if some unknown case was encountered and no portal could be added. If both calls to node1.GetPortal (node2,...) and node2.GetPortal (node1,...) return false, the funnel modifier will fall back to adding to the path the positions of the node.

The default implementation simply returns false.

This function may add more than one portal if necessary.

See Also: http://digestingduck.blogspot.se/2010/03/simple-stupid-funnel-algorithm.html

Reimplemented from GraphNode.

override void Open	(	Path	path,
		PathNode	pathNode,
		PathHandler	handler
	)

virtual

Open the node.

Implements GraphNode.

override void RemoveConnection ( GraphNode node )

virtual

Removes any connection from this node to the specified node.

If no such connection exists, nothing will be done.

Note: This only removes the connection from this node to the other node. You may want to call the same function on the other node to remove its eventual connection to this node.

Implements GraphNode.

void ResetConnectionsInternal ( )

Disables all grid connections from this node.

Note: Other nodes might still be able to get to this node. Therefore it is recommended to also disable the relevant connections on adjacent nodes.

override void SerializeNode ( GraphSerializationContext ctx )

virtual

Reimplemented from GraphNode.

void SetAllConnectionInternal ( int connections )

Sets the state of all grid connections.

Parameters

connections a bitmask of the connections (bit 0 is the first connection, etc.).

See Also: SetConnectionInternal

void SetConnectionInternal	(	int	dir,
		bool	value
	)

Enables or disables a connection in a specified direction on the graph.

See Also: GetConnectionInternal

static void SetGridGraph	(	int	graphIndex,
		GridGraph	graph
	)

static

override void UpdateRecursiveG	(	Path	path,
		PathNode	pathNode,
		PathHandler	handler
	)

virtual

Reimplemented from GraphNode.

Member Data Documentation

GridGraph [] _gridGraphs = new GridGraph[0]

staticprivate

uint [] connectionCosts

GraphNode [] connections

ushort gridFlags

protected

const int GridFlagsConnectionBit0 = 1 << GridFlagsConnectionOffset

private

const int GridFlagsConnectionMask = 0xFF << GridFlagsConnectionOffset

private

const int GridFlagsConnectionOffset = 0

private

const int GridFlagsEdgeNodeMask = 1 << GridFlagsEdgeNodeOffset

private

const int GridFlagsEdgeNodeOffset = 10

private

const int GridFlagsWalkableErosionMask = 1 << GridFlagsWalkableErosionOffset

private

const int GridFlagsWalkableErosionOffset = 8

private

const int GridFlagsWalkableTmpMask = 1 << GridFlagsWalkableTmpOffset

private

const int GridFlagsWalkableTmpOffset = 9

private

Property Documentation

bool EdgeNode

getset

ushort InternalGridFlags

getsetpackage

Internal use only.

bool TmpWalkable

getset

Temporary variable used by graph updating.

bool WalkableErosion

getset

Stores walkability before erosion is applied.

Used by graph updating.

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

/Users/arong/Unity/a-pathfinding-project/Assets/AstarPathfindingProject/Generators/NodeClasses/GridNode.cs

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Attributes

Properties

Private Attributes

Static Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

Property Documentation