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NavigationPolygon¶

Inherits: Resource < RefCounted < Object

A navigation polygon that defines traversable areas and obstacles.

描述¶

There are two ways to create polygons. Either by using the add_outline method, or using the add_polygon method.

Using add_outline:

var polygon = NavigationPolygon.new()
var outline = PackedVector2Array([Vector2(0, 0), Vector2(0, 50), Vector2(50, 50), Vector2(50, 0)])
polygon.add_outline(outline)
polygon.make_polygons_from_outlines()
$NavigationRegion2D.navigation_polygon = polygon

var polygon = new NavigationPolygon();
var outline = new Vector2[] { new Vector2(0, 0), new Vector2(0, 50), new Vector2(50, 50), new Vector2(50, 0) };
polygon.AddOutline(outline);
polygon.MakePolygonsFromOutlines();
GetNode<NavigationRegion2D>("NavigationRegion2D").NavigationPolygon = polygon;

Using add_polygon and indices of the vertices array.

var polygon = NavigationPolygon.new()
var vertices = PackedVector2Array([Vector2(0, 0), Vector2(0, 50), Vector2(50, 50), Vector2(50, 0)])
polygon.vertices = vertices
var indices = PackedInt32Array([0, 1, 2, 3])
polygon.add_polygon(indices)
$NavigationRegion2D.navigation_polygon = polygon

var polygon = new NavigationPolygon();
var vertices = new Vector2[] { new Vector2(0, 0), new Vector2(0, 50), new Vector2(50, 50), new Vector2(50, 0) };
polygon.Vertices = vertices;
var indices = new int[] { 0, 1, 2, 3 };
polygon.AddPolygon(indices);
GetNode<NavigationRegion2D>("NavigationRegion2D").NavigationPolygon = polygon;

教程¶

属性¶

float

cell_size

1.0

Methods¶

void	add_outline ( PackedVector2Array outline )
void	add_outline_at_index ( PackedVector2Array outline, int index )
void	add_polygon ( PackedInt32Array polygon )
void	clear ( )
void	clear_outlines ( )
void	clear_polygons ( )
NavigationMesh	get_navigation_mesh ( )
PackedVector2Array	get_outline ( int idx ) const
int	get_outline_count ( ) const
PackedInt32Array	get_polygon ( int idx )
int	get_polygon_count ( ) const
PackedVector2Array	get_vertices ( ) const
void	make_polygons_from_outlines ( )
void	remove_outline ( int idx )
void	set_outline ( int idx, PackedVector2Array outline )
void	set_vertices ( PackedVector2Array vertices )

Property Descriptions¶

float cell_size = 1.0

void set_cell_size ( float value )
float get_cell_size ( )

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

Method Descriptions¶

void add_outline ( PackedVector2Array outline )

Appends a PackedVector2Array that contains the vertices of an outline to the internal array that contains all the outlines. You have to call make_polygons_from_outlines in order for this array to be converted to polygons that the engine will use.

void add_outline_at_index ( PackedVector2Array outline, int index )

Adds a PackedVector2Array that contains the vertices of an outline to the internal array that contains all the outlines at a fixed position. You have to call make_polygons_from_outlines in order for this array to be converted to polygons that the engine will use.

void add_polygon ( PackedInt32Array polygon )

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_outlines ( )

Clears the array of the outlines, but it doesn't clear the vertices and the polygons that were created by them.

void clear_polygons ( )

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

Returns the NavigationMesh resulting from this navigation polygon. This navigation mesh can be used to update the navigation mesh of a region with the NavigationServer3D.region_set_navigation_mesh API directly (as 2D uses the 3D server behind the scene).

PackedVector2Array get_outline ( int idx ) const

Returns a PackedVector2Array containing the vertices of an outline that was created in the editor or by script.

int get_outline_count ( ) const

Returns the number of outlines that were created in the editor or by script.

PackedInt32Array get_polygon ( int idx )

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

int get_polygon_count ( ) const

Returns the count of all polygons.

PackedVector2Array get_vertices ( ) const

Returns a PackedVector2Array containing all the vertices being used to create the polygons.

void make_polygons_from_outlines ( )

Creates polygons from the outlines added in the editor or by script.

void remove_outline ( int idx )

Removes an outline created in the editor or by script. You have to call make_polygons_from_outlines for the polygons to update.

void set_outline ( int idx, PackedVector2Array outline )

Changes an outline created in the editor or by script. You have to call make_polygons_from_outlines for the polygons to update.

void set_vertices ( PackedVector2Array vertices )

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