A PHYSICSMATERIAL2D file describes friction and bounce physics between 2D objects when they collide in a Unity game. PHYSICSMATERIAL2D files use the YAML format. Game developers encounter these files when building Unity games. The file dictates friction and bounciness of materials.
If you develop Unity games, you may see PHYSICSMATERIAL2D files. They describe friction and bounce of materials when 2D objects collide. For a bouncy object, set “bounciness” to a high value (0 = no bounce, 1 = perfect bounce). Open and edit PHYSICSMATERIAL2D files with Unity Editor.
PHYSICSMATERIAL2D is an UnityEngine asset type defining surface properties of a Collider2D. It is similar to PhysicMaterial for 3D. See PhysicMaterial class for details.
To create a Physics Material 2D in Unity, go to Assets > Create > 2D > Physics Material 2D. It adjusts friction and bounce between colliding 2D physics objects.
PHYSICSMATERIAL2D files use the YAML format. Game developers building Unity games encounter these files. The files dictate friction and bounciness of materials when 2D objects collide.
There is 1 file type associated with PHYSICSMATERIAL2D – Unity Physics Material 2D. On Windows/Mac/Linux, PHYSICSMATERIAL2D files open with Unity.
Unity’s built-in asset importers handle imports for basic asset types like 3D models, textures, and audio. Some built-in importers:
– AudioImporter: audio formats
– ModelImporter: 3D models
– TextureImporter: textures
To create a Physics Material 2D asset in Unity 2020, go to Assets > Create > Physics Material 2D.
To adjust friction for a 2D object:
1. Create PhysicsMaterial2D member variable
2. Instantiate in Start()
3. Set friction value
4. Apply material to object’s collider
This assigns the material to the collider. However, the friction does not actually change. The object behaves like the default material.
Static meshes have simple and complex collision. Simple uses the mesh’s physical material. Complex can use different materials. When a collision references simple collision, it uses:
– Mesh editor physical material
– Static mesh actor override
Complex collisions reference materials set on individual polys.
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