VKC Node Collider

This is a basic component for colliders that adds collision detection to nodes and can be used in combination with other collider components.
A notable feature is that its properties change significantly based on the collider type setting described below.

About this guide

This guide explains the basic usage and settings of the VKC Node Collider. For information about other collider components and practical examples, please refer to How to Use Colliders/Tips.

Property List

Category	Label	Function
Collider	Collider Type	Specifies the type of collider. Details are described below.
	Collider Target	Specifies the target. Details are described below.
Physics	Use Physics	Enables physics calculations for the Box Collider.
	Fixed	Allows you to fix the position of the Box Collider.
	Enable Body	Allows you to choose whether to enable physics when the node is loaded.
	Mass	Adjusts the mass parameter.
	Restitution	Adjusts the restitution (bounciness) parameter.
Extrusion	Allow Cross Over	Specifies whether to allow penetration into the collider.
	Cross Over Rate	The ratio of penetration allowed. Values closer to 0.0 allow for greater penetration.
	Extrusion Speed	Sets the speed at which objects are pushed out when they exceed the allowed penetration ratio.
	Grounding Detection	Sets ground detection. Ground detection determines whether the upper surface of a collider is ground, and if so, allows objects to stand on it. Details are described below.

Extrusion adjustment is now available

In SDK 13.0 and later, the behavior of collision extrusion can now be adjusted. For example, you can allow some penetration to pass through gaps (colliders) that would otherwise be impassable due to collision detection, or prevent small nodes from getting in the way when moving.

Details of Collider Types

The collider type specified in the properties has the following characteristics:

1. Collider

Adds collision detection to nodes, making it possible to detect contact with other nodes or avatars that also have collision detection. It also creates physical collisions, so this type is used for walls that prevent avatar movement and floors for walking.

The avatar's collider collides with the wall's collider, preventing the avatar from moving forward.

Please use in combination with the Box Collider component

Collision detection will not be added when combined with Unity components other than Box Collider, such as Sphere Collider.

Avatars will pass through if set to any other type

Nodes with types other than Collider can be moved through by avatars without stopping when touched.

2. Clickable

Making it a clickable target enables detection of mouse cursor clicks. Use cases include interactions such as picking up items, opening doors, or displaying UI menus when clicked.

3. Area

When you attach the VKCItemAreaCollider component to a GameObject, this type of VKCNodeCollider is also automatically added.
For more details, please refer to VKC Item Area Collider.

4. Occlusion

By adding this type of collider to nodes such as walls, rendering of nodes behind that node will be omitted.
For more details, please refer to Occlusion Culling.

5. Reflection Probe

Warning

Please avoid selecting this type manually. It is currently selectable in the inspector, but it is scheduled to be hidden in future SDK updates.

6. In View

Fires when a node enters or exits the field of view. As a use case, for example, you can create enemy characters that don't approach you only when they are in your field of view.

①The red cube has not yet entered the field of view, ②The red cube has entered the field of view, so it fires. ③It doesn't fire because the cube is still in the field of view. ④It fires because the red cube has completely left the field of view.

HeliScript must be used

You need to use the HeliScript callback function for detection. For more details, please refer to Callbacks - Field of View Collider Detection.

Details of Collider Targets

Label	Function
All	Collision targets are not restricted, collides with all colliders.
Avatar Only	Collision targets are restricted to avatars only. Collides only with avatars, not with cameras, etc.
Self Player Only	Collision targets are restricted to only the avatar controlled by yourself. Does not collide with avatars controlled by other players.

caution

The collider target setting functions only when the collider type is set to Collider.

Details of Ground Detection

Label	Function
Auto	Automatically determined by collider size. Disabled for small sizes, enabled for medium and large sizes.
Enable	Ground detection enabled
Disable	Ground detection disabled