NavMesh

class in UnityEngine.AI

Description 描述

Singleton class to access the baked NavMesh.

The NavMesh is a class can be used to do spatial queries, like pathfinding and walkability tests, set the pathfinding cost for specific area types, and to tweak global behavior of pathfinding and avoidance.

In order to use the spatial queries, you need to first bake NavMesh for your Scene.

See also:
• Building a NavMesh – for more information on how to setup and bake NavMesh
• Areas and Costs – to learn how to use different Area types.
• NavMeshAgent – to learn how to control and move NavMesh Agents.
• NavMeshObstacle – to learn how to control NavMesh Obstacles using scripting.
• OffMeshLink – to learn how to control Off-Mesh Links using scripting.

Static Properties

	AllAreas		Area mask constant that includes all NavMesh areas.
	avoidancePredictionTime		Describes how far in the future the agents predict collisions for avoidance.
	onPreUpdate		Set a function to be called before the NavMesh is updated during the frame update execution.
	pathfindingIterationsPerFrame		The maximum amount of nodes processed each frame in the asynchronous pathfinding process.

Static Methods 静态方法

	AddLink		Adds a link to the NavMesh. The link is described by the NavMeshLinkData struct.
	AddNavMeshData		Adds the specified NavMeshData to the game.
	CalculatePath		Calculate a path between two points and store the resulting path.
	CalculateTriangulation		Calculates triangulation of the current navmesh.
	CreateSettings		Creates and returns a new entry of NavMesh build settings available for runtime NavMesh building.
	FindClosestEdge		Locate the closest NavMesh edge from a point on the NavMesh.
	GetAreaCost		Gets the cost for path finding over geometry of the area type.
	GetAreaFromName		Returns the area index for a named NavMesh area type.
	GetSettingsByID		Returns an existing entry of NavMesh build settings.
	GetSettingsByIndex		Returns an existing entry of NavMesh build settings by its ordered index.
	GetSettingsCount		Returns the number of registered NavMesh build settings.
	GetSettingsNameFromID		Returns the name associated with the NavMesh build settings matching the provided agent type ID.
	Raycast		Trace a line between two points on the NavMesh.
	RemoveAllNavMeshData		Removes all NavMesh surfaces and links from the game.
	RemoveLink		Removes a link from the NavMesh.
	RemoveNavMeshData		Removes the specified NavMeshDataInstance from the game, making it unavailable for agents and queries.
	RemoveSettings		Removes the build settings matching the agent type ID.
	SamplePosition		Finds the closest point on NavMesh within specified range.
	SetAreaCost		Sets the cost for finding path over geometry of the area type on all agents.

Delegates

OnNavMeshPreUpdate

A delegate which can be used to register callback methods to be invoked before the NavMesh system updates.