unity-physicscore2d-layers-api

Unity 2D physics layers define specific collision rules by exposing layer names and ordinals via the PhysicsLayers API, allowing you to implement precise layer-based collision masking. The PhysicsMask type defines the mask behavior for these layers.

PhysicsLayers exposes layer names and ordinals, while PhysicsMask defines the mask behavior for layer-based collision rules. Both are part of the Unity.U2D.Physics namespace in the PhysicsCore2D API.

You look up layer names and ordinals by consulting the public members and signatures of the Unity.U2D.Physics.PhysicsLayers type. This API surface provides the definitive reference for layer-name lookups in Unity 6000.5.

Yes, the PhysicsCore2D API supports cross-version development by providing a version-aligned API surface reflecting Unity 6000.5. This ensures software engineers can manage migration tasks and maintain layer-based collision rules across different Unity versions.

The primary limitation is that the API surface is strictly aligned with Unity 6000.5, meaning public members and signatures for PhysicsLayers and PhysicsMask may differ in older or newer Unity versions, potentially affecting cross-version compatibility.