DynamicGridObstacle Class Reference

Attach this script to any obstacle with a collider to enable dynamic updates of the graphs around it. More...

Detailed Description

Attach this script to any obstacle with a collider to enable dynamic updates of the graphs around it.

When the object has moved a certain distance (or actually when it's bounding box has changed by a certain amount) defined by updateError it will call AstarPath.UpdateGraphs and update the graph around it.

Make sure that any children colliders do not extend beyond the bounds of the collider attached to the GameObject that the DynamicGridObstacle component is attached to since this script only updates the graph using the bounds of the collider on the same GameObject.

Note

This script only works with GridGraph, PointGraph and LayerGridGraph

See Also

AstarPath.UpdateGraphs

graph-updates

Public Member Functions
void	DoUpdateGraphs ()
	Update the graphs around this object.

Public Attributes
float	checkTime = 0.2F
	Time in seconds between bounding box checks.
float	updateError = 1
	The minimum change in world units along one of the axis of the bounding box of the collider to trigger a graph update.

Private Member Functions
void	OnDestroy ()
	Revert graphs when destroyed.
void	Start ()
void	Update ()

Static Private Member Functions
static float	BoundsVolume (Bounds b)
	Volume of a Bounds object.

Private Attributes
Collider	col
	Collider to get bounds information from.
float	lastCheckTime = -9999
Bounds	prevBounds
	Bounds of the collider the last time the graphs were updated.
bool	prevEnabled
	True if the collider was enabled last time the graphs were updated.
Quaternion	prevRotation
	Rotation of the collider the last time the graphs were updated.
Transform	tr
	Cached transform component.

Member Function Documentation

static float BoundsVolume ( Bounds  b )

staticprivate

Volume of a Bounds object.

X*Y*Z

void DoUpdateGraphs

(

)

Update the graphs around this object.

Note

The graphs will not be updated immediately since the pathfinding threads need to be paused first. If you want to guarantee that the graphs have been updated then call AstarPath.active.FlushGraphUpdates() after the call to this method.

void OnDestroy ( )

private

Revert graphs when destroyed.

When the DynamicObstacle is destroyed, a last graph update should be done to revert nodes to their original state

void Start ( )

private

void Update ( )

private

Member Data Documentation

float checkTime = 0.2F

Time in seconds between bounding box checks.

If AstarPath.batchGraphUpdates is enabled, it is not beneficial to have a checkTime much lower than AstarPath.graphUpdateBatchingInterval because that will just add extra unnecessary graph updates.

In real time seconds (based on Time.realtimeSinceStartup).

Collider col

private

Collider to get bounds information from.

float lastCheckTime = -9999

private

Bounds prevBounds

private

Bounds of the collider the last time the graphs were updated.

bool prevEnabled

private

True if the collider was enabled last time the graphs were updated.

Quaternion prevRotation

private

Rotation of the collider the last time the graphs were updated.

Transform tr

private

Cached transform component.

float updateError = 1

The minimum change in world units along one of the axis of the bounding box of the collider to trigger a graph update.

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

• /Users/arong/Unity/a-pathfinding-project/Assets/AstarPathfindingProject/ExampleScenes/ExampleScripts/DynamicGridObstacle.cs