Version: Unity 6 Preview (6000.0)
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Rigidbody.excludeLayers

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public LayerMask excludeLayers;

Description

The additional layers that all Colliders attached to this Rigidbody should exclude when deciding if the Collider can come into contact with another Collider.

The Layer Collision Matrix defines which layers can and cannot contact other layers. Use this property to specify additional layers that all Colliders attached to this Rigidbody instance can't contact.

When deciding which layers can contact each other, the Layer Collision Matrix first includes layers, then excludes layers. If a layer is set to be included and excluded, it is excluded.

NOTE: Layers can be included or excluded differently depending on the settings of each Collider instance. As such, there could be a conflicting decision for whether two Collider instances can come into contact with each other. To learn how Unity decides this, see Collider.layerOverridePriority.

Additional resources: Collider.includeLayers, Rigidbody.includeLayers, ArticulationBody.includeLayers, ArticulationBody.excludeLayers.