Class GraphUpdateScene Extends GraphModifier

void Apply ()

Updates graphs with a created GUO.

Creates a Pathfinding.GraphUpdateObject with a Pathfinding.GraphUpdateShape representing the polygon of this object and update all graphs using AstarPath.UpdateGraphs. This will not update graphs immediately. See AstarPath.UpdateGraph for more info.

void DisableLegacyMode ()

Disables legacy mode if it is enabled.

Legacy mode is automatically enabled for components when upgrading from an earlier version than 3.8.6.

void DrawGizmos ()

Draws some gizmos.

Bounds GetBounds ()

Calculates the bounds for this component.

This is a relatively expensive operation, it needs to go through all points and run matrix multiplications.

GraphUpdateObject GetGraphUpdate ()

The GraphUpdateObject which would be applied by this component.

No graphs are actually updated by this function. Call AstarPath.active.UpdateGraphs and pass this object if you want that. This method is useful if you want to modify the object before passing it to the UpdateGraphs function.

void InvertSettings ()

Inverts all invertable settings for this GUS.

Namely: penalty delta, walkability, tags.

Penalty delta will be changed to negative penalty delta.
setWalkability will be inverted.
setTag will be stored in a private variable, and the new value will be 0. When calling this function again, the saved value will be the new value.

Calling this function an even number of times without changing any settings in between will be identical to no change in settings.

void OnPostScan ()

Called right after all graphs have been scanned.

void RecalcConvex ()

Recalculate convex hull.

Will not do anything if convex is disabled.

void Start ()

Do some stuff at start.

bool applyOnScan = true

Apply this graph update object whenever a graph is rescanned.

bool applyOnStart = true

Apply this graph update object on start.

bool convex = true

Use the convex hull of the points instead of the original polygon.

bool legacyMode = false

Emulates behavior from before version 4.0.

float minBoundsHeight = 1

Minumum height of the bounds of the resulting Graph Update Object.

Useful when all points are laid out on a plane but you still need a bounds with a height greater than zero since a zero height graph update object would usually result in no nodes being updated.

bool modifyTag

Should the tags of the nodes be modified.

If enabled, set all nodes' tags to setTag

bool modifyWalkability

If true, then all affected nodes will be made walkable or unwalkable according to setWalkability.

int penaltyDelta

Penalty to add to nodes.

Usually you need quite large values, at least 1000-10000. A higher penalty means that agents will try to avoid those nodes more.

Be careful when setting negative values since if a node gets a negative penalty it will underflow and instead get really large. In most cases a warning will be logged if that happens.

Vector3[] points

Points which define the region to update.

bool resetPenaltyOnPhysics = true

Reset penalties to their initial values when updating grid graphs and updatePhysics is true.

If you want to keep old penalties even when you update the graph you may want to disable this option.

The images below shows two overlapping graph update objects, the right one happened to be applied before the left one. They both have updatePhysics = true and are set to increase the penalty of the nodes by some amount.

The first image shows the result when resetPenaltyOnPhysics is false. Both penalties are added correctly.

This second image shows when resetPenaltyOnPhysics is set to true. The first GUO is applied correctly, but then the second one (the left one) is applied and during its updating, it resets the penalties first and then adds penalty to the nodes. The result is that the penalties from both GUOs are not added together. The green patch in at the border is there because physics recalculation (recalculation of the position of the node, checking for obstacles etc.) affects a slightly larger area than the original GUO bounds because of the Grid Graph -> Collision Testing -> Diameter setting (it is enlarged by that value). So some extra nodes have their penalties reset.

PathfindingTag setTag

If modifyTag is enabled, set all nodes' tags to this value.

bool setWalkability

Nodes will be made walkable or unwalkable according to this value if modifyWalkability is true.

bool updateErosion = true

Update Erosion for GridGraphs.

When enabled, erosion will be recalculated for grid graphs after the GUO has been applied.

In the below image you can see the different effects you can get with the different values.
The first image shows the graph when no GUO has been applied. The blue box is not identified as an obstacle by the graph, the reason there are unwalkable nodes around it is because there is a height difference (nodes are placed on top of the box) so erosion will be applied (an erosion value of 2 is used in this graph). The orange box is identified as an obstacle, so the area of unwalkable nodes around it is a bit larger since both erosion and collision has made nodes unwalkable.
The GUO used simply sets walkability to true, i.e making all nodes walkable.

When updateErosion=True, the reason the blue box still has unwalkable nodes around it is because there is still a height difference so erosion will still be applied. The orange box on the other hand has no height difference and all nodes are set to walkable.

When updateErosion=False, all nodes walkability are simply set to be walkable in this example.

bool updatePhysics

Update node's walkability and connectivity using physics functions.

For grid graphs, this will update the node's position and walkability exactly like when doing a scan of the graph. If enabled for grid graphs, modifyWalkability will be ignored.

For Point Graphs, this will recalculate all connections which passes through the bounds of the resulting Graph Update Object using raycasts (if enabled).

EventType

GraphModifier event type.

void FindAllModifiers ()

void OnGraphsPostUpdate ()

Called after graphs have been updated using GraphUpdateObjects or navmesh cutting.

This is among other times called after graphs have been scanned, updated using GraphUpdateObjects, navmesh cuts, or GraphUpdateScene components.

Area recalculations (see HierarchicalGraph) have been done at this stage so things like PathUtilities.IsPathPossible will work.

Use OnGraphsPostUpdateBeforeAreaRecalculation instead if you are modifying the graph in any way, especially connections and walkability. This is because if you do this then area recalculations

void OnGraphsPostUpdateBeforeAreaRecalculation ()

Called after graphs have been updated.

This is among other times called after graphs have been scanned, updated using GraphUpdateObjects, navmesh cuts, or GraphUpdateScene components.

Use this if you are modifying any graph connections or walkability.

void OnGraphsPreUpdate ()

Called before graphs are updated using GraphUpdateObjects.

void OnLatePostScan ()

Called at the end of the scanning procedure.

This is the absolute last thing done by Scan.

void OnPostCacheLoad ()

Called after cached graphs have been loaded.

When using cached startup, this event is analogous to OnLatePostScan and implementing scripts should do roughly the same thing for both events.

void OnPostGraphLoad ()

Called after a graph has been deserialized and loaded.

This will be called often outside of play mode. Make sure to check Application.isPlaying if appropriate.

void OnPreScan ()

Called right before graphs are going to be scanned.

void TriggerEvent (

GraphModifier.EventType

type

)

Triggers an event for all active graph modifiers.

void Awake ()

List<T> GetModifiersOfType<T> ()

void OnDestroy ()

void OnDisable ()

Removes this modifier from list of active modifiers.

void OnEnable ()

Adds this modifier to list of active modifiers.

int OnUpgradeSerializedData (

int	version
bool	unityThread

)

Handle serialization backwards compatibility.

void Reset ()

Handle serialization backwards compatibility.

Vector3[] convexPoints

Private cached convex hull of the points.

bool firstApplied

Has apply been called yet.

Used to prevent applying twice when both applyOnScan and applyOnStart are enabled

bool legacyUseWorldSpace

Use world space for coordinates.

If true, the shape will not follow when moving around the transform.

int setTagCompatibility = -1

PathfindingTag setTagInvert

Private cached inversion of setTag.

Used for InvertSettings()

ulong uniqueID

Unique persistent ID for this component, used for serialization.

Dictionary<ulong,GraphModifier> usedIDs = new Dictionary<ulong, GraphModifier>()

Maps persistent IDs to the component that uses it.