a30e5805af
- Document using convex decomposition in the editor. - Mention that "trimesh" is synonymous with a concave collision shape. - Add performance hints for each collision shape.
18 lines
1.9 KiB
XML
18 lines
1.9 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
|
|
<class name="ConcavePolygonShape2D" inherits="Shape2D" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
|
|
<brief_description>
|
|
Concave polygon shape resource for 2D physics.
|
|
</brief_description>
|
|
<description>
|
|
2D concave polygon shape to be added as a [i]direct[/i] child of a [PhysicsBody2D] or [Area2D] using a [CollisionShape2D] node. It is made out of segments and is optimal for complex polygonal concave collisions. However, it is not advised to use for [RigidDynamicBody2D] nodes. A CollisionPolygon2D in convex decomposition mode (solids) or several convex objects are advised for that instead. Otherwise, a concave polygon 2D shape is better for static collisions.
|
|
The main difference between a [ConvexPolygonShape2D] and a [ConcavePolygonShape2D] is that a concave polygon assumes it is concave and uses a more complex method of collision detection, and a convex one forces itself to be convex to speed up collision detection.
|
|
[b]Performance:[/b] Due to its complexity, [ConcavePolygonShape2D] is the slowest collision shape to check collisions against. Its use should generally be limited to level geometry. For convex geometry, using [ConvexPolygonShape2D] will perform better. For dynamic physics bodies that need concave collision, several [ConvexPolygonShape2D]s can be used to represent its collision by using convex decomposition; see [ConvexPolygonShape2D]'s documentation for instructions. However, consider using primitive collision shapes such as [CircleShape2D] or [RectangleShape2D] first.
|
|
</description>
|
|
<tutorials>
|
|
</tutorials>
|
|
<members>
|
|
<member name="segments" type="PackedVector2Array" setter="set_segments" getter="get_segments" default="PackedVector2Array()">
|
|
The array of points that make up the [ConcavePolygonShape2D]'s line segments.
|
|
</member>
|
|
</members>
|
|
</class>
|