unity-physics

# Unity Physics Skill Physics system configuration and implementation in Unity. ## Overview This skill provides capabilities for implementing physics-based gameplay using Unity's physics systems (PhysX 3D and Box2D 2D). ## Capabilities ### Rigidbody Configuration - Configure mass, drag, constraints - Set up continuous collision detection - Handle interpolation modes - Manage sleep thresholds ### Collision Detection - Configure colliders and triggers - Set up collision layers and masks - Handle collision events - Implement compound colliders ### Raycasting - Perform raycasts and spherecasts - Use overlap tests - Handle layer filtering - Batch physics queries ### Physics Settings - Configure fixed timestep - Set up solver iterations - Handle physics materials - Manage auto-sync transforms ## Prerequisites - Unity 2021.3+ - Physics module (built-in) ## Usage Patterns ### Rigidbody Setup ```csharp public class PhysicsObject : MonoBehaviour { private Rigidbody rb; void Awake() { rb = GetComponent<Rigidbody>(); rb.interpolation = RigidbodyInterpolation.Interpolate; rb.collisionDetectionMode = CollisionDetectionMode.Continuous; } void FixedUpdate() { rb.AddForce(Vector3.forward * 10f, ForceMode.Force); } } ``` ### Raycasting ```csharp public bool CheckGround(out RaycastHit hit) { return Physics.Raycast( transform.position, Vector3.down, out hit, 1.1f, groundLayer,...