NavigationMesh

实验性： This class may be changed or removed in future versions.

继承： Resource < RefCounted < Object

A navigation mesh that defines traversable areas and obstacles.

描述

A navigation mesh is a collection of polygons that define which areas of an environment are traversable to aid agents in pathfinding through complicated spaces.

属性
floatagent_height
floatagent_max_climb
floatagent_max_slope
floatagent_radius
floatborder_size
floatcell_height
floatcell_size
floatdetail_sample_distance
floatdetail_sample_max_error
floatedge_max_error
floatedge_max_length
AABBfilter_baking_aabb
Vector3filter_baking_aabb_offset
boolfilter_ledge_spans
boolfilter_low_hanging_obstacles
boolfilter_walkable_low_height_spans
intgeometry_collision_mask
ParsedGeometryTypegeometry_parsed_geometry_type
SourceGeometryModegeometry_source_geometry_mode
StringNamegeometry_source_group_name
floatregion_merge_size
floatregion_min_size
SamplePartitionTypesample_partition_type
floatvertices_per_polygon

方法
voidadd_polygon ( polygon: PackedInt32Array )
voidclear ( )
voidclear_polygons ( )
voidcreate_from_mesh ( mesh: Mesh )
boolget_collision_mask_value ( layer_number: int ) const1
PackedInt32Arrayget_polygon ( idx: int )
intget_polygon_count ( ) const1
PackedVector3Arrayget_vertices ( ) const1
voidset_collision_mask_value ( layer_number: int, value: bool )
voidset_vertices ( vertices: PackedVector3Array )

枚举

enum SamplePartitionType:

SamplePartitionType SAMPLE_PARTITION_WATERSHED = 0

Watershed partitioning. Generally the best choice if you precompute the navigation mesh, use this if you have large open areas.

SamplePartitionType SAMPLE_PARTITION_MONOTONE = 1

Monotone partitioning. Use this if you want fast navigation mesh generation.

SamplePartitionType SAMPLE_PARTITION_LAYERS = 2

Layer partitioning. Good choice to use for tiled navigation mesh with medium and small sized tiles.

SamplePartitionType SAMPLE_PARTITION_MAX = 3

Represents the size of the SamplePartitionType enum.

enum ParsedGeometryType:

ParsedGeometryType PARSED_GEOMETRY_MESH_INSTANCES = 0

Parses mesh instances as geometry. This includes MeshInstance3D, CSGShape3D, and GridMap nodes.

ParsedGeometryType PARSED_GEOMETRY_STATIC_COLLIDERS = 1

Parses StaticBody3D colliders as geometry. The collider should be in any of the layers specified by geometry_collision_mask.

ParsedGeometryType PARSED_GEOMETRY_BOTH = 2

Both PARSED_GEOMETRY_MESH_INSTANCES and PARSED_GEOMETRY_STATIC_COLLIDERS.

ParsedGeometryType PARSED_GEOMETRY_MAX = 3

Represents the size of the ParsedGeometryType enum.

enum SourceGeometryMode:

SourceGeometryMode SOURCE_GEOMETRY_ROOT_NODE_CHILDREN = 0

Scans the child nodes of the root node recursively for geometry.

SourceGeometryMode SOURCE_GEOMETRY_GROUPS_WITH_CHILDREN = 1

Scans nodes in a group and their child nodes recursively for geometry. The group is specified by geometry_source_group_name.

SourceGeometryMode SOURCE_GEOMETRY_GROUPS_EXPLICIT = 2

Uses nodes in a group for geometry. The group is specified by geometry_source_group_name.

SourceGeometryMode SOURCE_GEOMETRY_MAX = 3

Represents the size of the SourceGeometryMode enum.

属性说明

float agent_height = 1.5

  • void set_agent_height ( value: float )
  • float get_agent_height ( )

The minimum floor to ceiling height that will still allow the floor area to be considered walkable.

Note: While baking, this value will be rounded up to the nearest multiple of cell_height.

float agent_max_climb = 0.25

  • void set_agent_max_climb ( value: float )
  • float get_agent_max_climb ( )

The minimum ledge height that is considered to still be traversable.

Note: While baking, this value will be rounded down to the nearest multiple of cell_height.

float agent_max_slope = 45.0

  • void set_agent_max_slope ( value: float )
  • float get_agent_max_slope ( )

The maximum slope that is considered walkable, in degrees.

float agent_radius = 0.5

  • void set_agent_radius ( value: float )
  • float get_agent_radius ( )

The distance to erode/shrink the walkable area of the heightfield away from obstructions.

Note: While baking, this value will be rounded up to the nearest multiple of cell_size.

float border_size = 0.0

  • void set_border_size ( value: float )
  • float get_border_size ( )

The size of the non-navigable border around the bake bounding area.

In conjunction with the filter_baking_aabb and a edge_max_error value at 1.0 or below the border size can be used to bake tile aligned navigation meshes without the tile edges being shrunk by agent_radius.

Note: While baking and not zero, this value will be rounded up to the nearest multiple of cell_size.

float cell_height = 0.25

  • void set_cell_height ( value: float )
  • float get_cell_height ( )

The cell height used to rasterize the navigation mesh vertices on the Y axis. Must match with the cell height on the navigation map.

float cell_size = 0.25

  • void set_cell_size ( value: float )
  • float get_cell_size ( )

The cell size used to rasterize the navigation mesh vertices on the XZ plane. Must match with the cell size on the navigation map.

float detail_sample_distance = 6.0

  • void set_detail_sample_distance ( value: float )
  • float get_detail_sample_distance ( )

The sampling distance to use when generating the detail mesh, in cell unit.

float detail_sample_max_error = 1.0

  • void set_detail_sample_max_error ( value: float )
  • float get_detail_sample_max_error ( )

The maximum distance the detail mesh surface should deviate from heightfield, in cell unit.

float edge_max_error = 1.3

  • void set_edge_max_error ( value: float )
  • float get_edge_max_error ( )

The maximum distance a simplified contour's border edges should deviate the original raw contour.

float edge_max_length = 0.0

  • void set_edge_max_length ( value: float )
  • float get_edge_max_length ( )

The maximum allowed length for contour edges along the border of the mesh. A value of 0.0 disables this feature.

Note: While baking, this value will be rounded up to the nearest multiple of cell_size.

AABB filter_baking_aabb = AABB(0, 0, 0, 0, 0, 0)

  • void set_filter_baking_aabb ( value: AABB )
  • AABB get_filter_baking_aabb ( )

If the baking AABB has a volume the navigation mesh baking will be restricted to its enclosing area.

Vector3 filter_baking_aabb_offset = Vector3(0, 0, 0)

  • void set_filter_baking_aabb_offset ( value: Vector3 )
  • Vector3 get_filter_baking_aabb_offset ( )

The position offset applied to the filter_baking_aabb AABB.

bool filter_ledge_spans = false

  • void set_filter_ledge_spans ( value: bool )
  • bool get_filter_ledge_spans ( )

If true, marks spans that are ledges as non-walkable.

bool filter_low_hanging_obstacles = false

  • void set_filter_low_hanging_obstacles ( value: bool )
  • bool get_filter_low_hanging_obstacles ( )

If true, marks non-walkable spans as walkable if their maximum is within agent_max_climb of a walkable neighbor.

bool filter_walkable_low_height_spans = false

  • void set_filter_walkable_low_height_spans ( value: bool )
  • bool get_filter_walkable_low_height_spans ( )

If true, marks walkable spans as not walkable if the clearance above the span is less than agent_height.

int geometry_collision_mask = 4294967295

  • void set_collision_mask ( value: int )
  • int get_collision_mask ( )

The physics layers to scan for static colliders.

Only used when geometry_parsed_geometry_type is PARSED_GEOMETRY_STATIC_COLLIDERS or PARSED_GEOMETRY_BOTH.

ParsedGeometryType geometry_parsed_geometry_type = 2

Determines which type of nodes will be parsed as geometry. See ParsedGeometryType for possible values.

SourceGeometryMode geometry_source_geometry_mode = 0

The source of the geometry used when baking. See SourceGeometryMode for possible values.

StringName geometry_source_group_name = &"navigation_mesh_source_group"

The name of the group to scan for geometry.

Only used when geometry_source_geometry_mode is SOURCE_GEOMETRY_GROUPS_WITH_CHILDREN or SOURCE_GEOMETRY_GROUPS_EXPLICIT.

float region_merge_size = 20.0

  • void set_region_merge_size ( value: float )
  • float get_region_merge_size ( )

Any regions with a size smaller than this will be merged with larger regions if possible.

Note: This value will be squared to calculate the number of cells. For example, a value of 20 will set the number of cells to 400.

float region_min_size = 2.0

  • void set_region_min_size ( value: float )
  • float get_region_min_size ( )

The minimum size of a region for it to be created.

Note: This value will be squared to calculate the minimum number of cells allowed to form isolated island areas. For example, a value of 8 will set the number of cells to 64.

SamplePartitionType sample_partition_type = 0

Partitioning algorithm for creating the navigation mesh polys. See SamplePartitionType for possible values.

float vertices_per_polygon = 6.0

  • void set_vertices_per_polygon ( value: float )
  • float get_vertices_per_polygon ( )

The maximum number of vertices allowed for polygons generated during the contour to polygon conversion process.

方法说明

void add_polygon ( polygon: PackedInt32Array )

Adds a polygon using the indices of the vertices you get when calling get_vertices.

void clear ( )

Clears the internal arrays for vertices and polygon indices.

void clear_polygons ( )

Clears the array of polygons, but it doesn't clear the array of vertices.

void create_from_mesh ( mesh: Mesh )

Initializes the navigation mesh by setting the vertices and indices according to a Mesh.

Note: The given mesh must be of type Mesh.PRIMITIVE_TRIANGLES and have an index array.

bool get_collision_mask_value ( layer_number: int ) const1

Returns whether or not the specified layer of the geometry_collision_mask is enabled, given a layer_number between 1 and 32.

PackedInt32Array get_polygon ( idx: int )

Returns a PackedInt32Array containing the indices of the vertices of a created polygon.

int get_polygon_count ( ) const1

Returns the number of polygons in the navigation mesh.

PackedVector3Array get_vertices ( ) const1

Returns a PackedVector3Array containing all the vertices being used to create the polygons.

void set_collision_mask_value ( layer_number: int, value: bool )

Based on value, enables or disables the specified layer in the geometry_collision_mask, given a layer_number between 1 and 32.

void set_vertices ( vertices: PackedVector3Array )

Sets the vertices that can be then indexed to create polygons with the add_polygon method.

2

本方法通常需要用户覆盖才能生效。

1

本方法无副作用，不会修改该实例的任何成员变量。

3

本方法除了能接受在此处描述的参数外，还能够继续接受任意数量的参数。

4

本方法用于构造某个类型。

5

调用本方法无需实例，可直接使用类名进行调用。

6

本方法描述的是使用本类型作为左操作数的有效运算符。

7

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8

无返回值。