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GridNodeBase Class Reference

Base class for GridNode and LevelGridNode. More...

Detailed Description

Base class for GridNode and LevelGridNode.

Public Member Functions

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.
 
override bool ContainsConnection (GraphNode node)
 Checks if this node has a connection to the specified node.
 
override void DeserializeReferences (GraphSerializationContext ctx)
 Used to deserialize references to other nodes e.g connections.
 
override void FloodFill (System.Collections.Generic.Stack< GraphNode > stack, uint region)
 
override void GetConnections (GraphNodeDelegate del)
 Calls the delegate with all connections from this node.
 
override void Open (Path path, PathNode pathNode, PathHandler handler)
 Open the node.
 
override Vector3 RandomPointOnSurface ()
 A random point on the surface of the node.
 
override void RemoveConnection (GraphNode node)
 Removes any connection from this node to the specified node.
 
override void SerializeReferences (GraphSerializationContext ctx)
 Used to serialize references to other nodes e.g connections.
 
override float SurfaceArea ()
 The surface area of the node in square world units.
 
override void UpdateRecursiveG (Path path, PathNode pathNode, PathHandler handler)
 
- Public Member Functions inherited from GraphNode
virtual void DeserializeNode (GraphSerializationContext ctx)
 
virtual void FloodFill (Stack< GraphNode > stack, uint region)
 
virtual bool GetPortal (GraphNode other, List< Vector3 > left, List< Vector3 > right, bool backwards)
 Add a portal from this node to the specified node.
 
virtual void RecalculateConnectionCosts ()
 Recalculates all connection costs from this node.
 
virtual void SerializeNode (GraphSerializationContext ctx)
 
void UpdateG (Path path, PathNode pathNode)
 

Public Attributes

uint[] connectionCosts
 
GraphNode[] connections
 
- Public Attributes inherited from GraphNode
const uint MaxAreaIndex = FlagsAreaMask >> FlagsAreaOffset
 
const uint MaxGraphIndex = FlagsGraphMask >> FlagsGraphOffset
 Max number of graphs-1.
 
Int3 position
 Position of the node in world space.
 

Protected Member Functions

 GridNodeBase (AstarPath astar)
 
- Protected Member Functions inherited from GraphNode
 GraphNode (AstarPath astar)
 Constructor for a graph node.
 

Protected Attributes

ushort gridFlags
 
int nodeInGridIndex
 
- Protected Attributes inherited from GraphNode
uint flags
 Bitpacked field holding several pieces of data.
 

Properties

int NodeInGridIndex [get, set]
 The index of the node in the grid.
 
bool TmpWalkable [get, set]
 Temporary variable used internally when updating the graph.
 
bool WalkableErosion [get, set]
 Stores walkability before erosion is applied.
 
- 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 GridFlagsWalkableErosionMask = 1 << GridFlagsWalkableErosionOffset
 
const int GridFlagsWalkableErosionOffset = 8
 
const int GridFlagsWalkableTmpMask = 1 << GridFlagsWalkableTmpOffset
 
const int GridFlagsWalkableTmpOffset = 9
 

Static Private Attributes

static readonly System.Version VERSION_3_8_3 = new System.Version(3, 8, 3)
 Cached to avoid allocations.
 

Additional Inherited Members

- Package Functions inherited from GraphNode
void Destroy ()
 Destroys the node.
 

Constructor & Destructor Documentation

GridNodeBase ( AstarPath  astar)
protected

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

Implements GraphNode.

override bool ContainsConnection ( GraphNode  node)
virtual

Checks if this node has a connection to the specified node.

Reimplemented from GraphNode.

override void DeserializeReferences ( GraphSerializationContext  ctx)
virtual

Used to deserialize references to other nodes e.g connections.

Use the GraphSerializationContext.GetNodeIdentifier and GraphSerializationContext.GetNodeFromIdentifier methods for serialization and deserialization respectively.

Nodes must override this method and serialize their connections. Graph generators do not need to call this method, it will be called automatically on all nodes at the correct time by the serializer.

Reimplemented from GraphNode.

override void FloodFill ( System.Collections.Generic.Stack< GraphNode stack,
uint  region 
)
override void GetConnections ( GraphNodeDelegate  del)
virtual

Calls the delegate with all connections from this node.

Implements GraphNode.

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

Open the node.

Implements GraphNode.

override Vector3 RandomPointOnSurface ( )
virtual

A random point on the surface of the node.

For point nodes and other nodes which do not have a surface, this will always return the position of the node.

Reimplemented from 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.

override void SerializeReferences ( GraphSerializationContext  ctx)
virtual

Used to serialize references to other nodes e.g connections.

Use the GraphSerializationContext.GetNodeIdentifier and GraphSerializationContext.GetNodeFromIdentifier methods for serialization and deserialization respectively.

Nodes must override this method and serialize their connections. Graph generators do not need to call this method, it will be called automatically on all nodes at the correct time by the serializer.

Reimplemented from GraphNode.

override float SurfaceArea ( )
virtual

The surface area of the node in square world units.

Reimplemented from GraphNode.

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

Reimplemented from GraphNode.

Member Data Documentation

uint [] connectionCosts
GraphNode [] connections
ushort gridFlags
protected
const int GridFlagsWalkableErosionMask = 1 << GridFlagsWalkableErosionOffset
private
const int GridFlagsWalkableErosionOffset = 8
private
const int GridFlagsWalkableTmpMask = 1 << GridFlagsWalkableTmpOffset
private
const int GridFlagsWalkableTmpOffset = 9
private
int nodeInGridIndex
protected
readonly System.Version VERSION_3_8_3 = new System.Version(3, 8, 3)
staticprivate

Cached to avoid allocations.

Property Documentation

int NodeInGridIndex
getset

The index of the node in the grid.

This is x + z*graph.width So you can get the X and Z indices using

int index = node.NodeInGridIndex;
int x = index % graph.width;
int z = index / graph.width;
// where graph is GridNode.GetGridGraph (node.graphIndex), i.e the graph the nodes are contained in.
bool TmpWalkable
getset

Temporary variable used internally when updating the graph.

bool WalkableErosion
getset

Stores walkability before erosion is applied.

Used internally when updating the graph.


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