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Reference API Roblox

PathfindingService

Used to find logical paths between two points.

This class is not replicated. Its interface does not cross the network boundary.
This class is not creatable. Instances of this class cannot be created with Instance.new.
This class is a service. It is a singleton that may be acquired with GetService.
Tags: [NotCreatable, Service, NotReplicated]

Member index 5

HistoryMember
553EmptyCutoff: float
642ComputeRawPathAsync(start: Vector3, finish: Vector3, maxDistance: float): Path
642ComputeSmoothPathAsync(start: Vector3, finish: Vector3, maxDistance: float): Path
642CreatePath(agentParameters: Dictionary = nil): Path
642FindPathAsync(start: Vector3, finish: Vector3): Path
inherited from Instance
553Archivable: bool
635Capabilities: SecurityCapabilities
553Name: string
553Parent: Instance
635Sandboxed: bool
616UniqueId: UniqueId
576AddTag(tag: string): null
573ClearAllChildren(): null
462Clone(): Instance
573Destroy(): null
486FindFirstAncestor(name: string): Instance
486FindFirstAncestorOfClass(className: string): Instance
486FindFirstAncestorWhichIsA(className: string): Instance
486FindFirstChild(name: string, recursive: bool = false): Instance
486FindFirstChildOfClass(className: string): Instance
486FindFirstChildWhichIsA(className: string, recursive: bool = false): Instance
486FindFirstDescendant(name: string): Instance
563GetActor(): Actor
486GetAttribute(attribute: string): Variant
462GetAttributeChangedSignal(attribute: string): RBXScriptSignal
631GetAttributes(): Dictionary
648GetChildren(): Instances
462GetDebugId(scopeLength: int = 4): string
486GetDescendants(): Array
486GetFullName(): string
641GetStyled(name: string): Variant
576GetTags(): Array
576HasTag(tag: string): bool
486IsAncestorOf(descendant: Instance): bool
486IsDescendantOf(ancestor: Instance): bool
580IsPropertyModified(name: string): bool
573Remove(): null
576RemoveTag(tag: string): null
580ResetPropertyToDefault(name: string): null
573SetAttribute(attribute: string, value: Variant): null
462WaitForChild(childName: string, timeOut: double): Instance
648children(): Instances
553clone(): Instance
573destroy(): null
553findFirstChild(name: string, recursive: bool = false): Instance
648getChildren(): Instances
553isDescendantOf(ancestor: Instance): bool
573remove(): null
462AncestryChanged(child: Instance, parent: Instance)
462AttributeChanged(attribute: string)
462ChildAdded(child: Instance)
462ChildRemoved(child: Instance)
462DescendantAdded(descendant: Instance)
462DescendantRemoving(descendant: Instance)
500Destroying()
553childAdded(child: Instance)
inherited from Object
647ClassName: string
647className: string
647GetPropertyChangedSignal(property: string): RBXScriptSignal
647IsA(className: string): bool
650isA(className: string): bool
647Changed(property: string)

Description

PathfindingService is used to find logical paths between two points, ensuring that characters can move between the points without running into walls or other obstacles. By default, the shortest path is calculated, but you can implement pathfinding modifiers to compute smarter paths across various materials, around defined regions, or through obstacles.

See Character Pathfinding for usage details.

History 22

Members 5

ComputeRawPathAsync

Parameters (3)
startVector3
finishVector3
maxDistancefloat
Returns (1)
Path

This function computes and returns a Path between two Vector3s. If the given MaxDistance is greater than 512, an error will be thrown. (MaxDistance is too large).

This function is deprecated. It exists only for backward compatibility, and should not be used for new work. FindPathAsync should be used instead.
This function yields. It will block the calling thread until completion.

History 5

Tags: [Yields, Deprecated]

ComputeSmoothPathAsync

Parameters (3)
startVector3
finishVector3
maxDistancefloat
Returns (1)
Path

This function computes and returns a smooth Path between two Vector3s. This function fulfills the same purpose as PathfindingService:ComputeRawPathAsync(), but creates a much smoother path for an NPC to follow in comparison.

This function is deprecated. It exists only for backward compatibility, and should not be used for new work. FindPathAsync should be used instead.
This function yields. It will block the calling thread until completion.

History 5

Tags: [Yields, Deprecated]

CreatePath

Parameters (1)Default
agentParametersDictionarynil
Returns (1)
Path

Creates a Path object based on various agent parameters. Valid keys and values in the agentParameters table are as follows:

KeyTypeDefaultDescription
AgentRadiusinteger2Determines the minimum amount of horizontal space required for empty space to be considered traversable.
AgentHeightinteger5Determines the minimum amount of vertical space required for empty space to be considered traversable.
AgentCanJumpbooleantrueDetermines whether jumping during pathfinding is allowed.
AgentCanClimbbooleanfalseDetermines whether climbing TrussParts during pathfinding is allowed.
WaypointSpacingnumber4Determines the spacing between intermediate waypoints in path.
Coststable{}Table of materials or defined PathfindingModifiers and their "cost" for traversal. Useful for making the agent prefer certain materials/regions over others. See here for details.

History 3

EmptyCutoff

TypeDefault
float0

This function worked with the legacy pathfinding system. The pathfinding system currently uses a navigation grid and the EmptyCutoff is unused.

When the PathfindingService computes a path using PathfindingService:ComputeRawPathAsync() or PathfindingService:ComputeRawPathAsync() it uses the voxel representation of the world. A voxel is one cube in a grid overlaid on the world. In this case the voxels being used are 4x4x4. This property sets the percent of a voxel has to be occupied to be considered empty. Defaults to 0.16.

This property is deprecated. It exists only for backward compatibility, and should not be used for new work.
This property is not replicated. Its interface does not cross the network boundary.

History 5

Tags: [NotReplicated, Deprecated]

FindPathAsync

Parameters (2)
startVector3
finishVector3
Returns (1)
Path

This function is used to find a Path between two provided points. This path uses the navigation grid created by PathfindingService and makes sure that the path can be followed by a regular-sized Roblox character.

This function returns a Path object which contains the coordinates of the path. If no path is found between the two points, this function will still return a Path object, but that object's Path.Status will be PathStatus.NoPath.

To get the waypoints of a Path object, you can use the Path:GetWaypoints() function.

This function yields. It will block the calling thread until completion.

History 3

Tags: [Yields]

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