SKILL.md
Unity Physics (Rigidbody / PhysX)
Make objects move, collide, and detect each other with Unity 6.3 LTS's built-in 3D physics
(PhysX). Get the FixedUpdate discipline, trigger-vs-collision rules, and collision layers
right. Targets Unity 6.3 LTS (6000.3).
Unity 6 renames:
Rigidbody.velocity→linearVelocity,drag→linearDamping,angularDrag→angularDamping. The old names still compile in 6.3 LTS but are obsolete (warnings; the API Updater offers the rename), so write the new names.PhysicMaterial→PhysicsMaterialis a hard compile error in old code.
When to use
- Use when giving an object physical motion (forces, velocity, gravity), responding to collisions or triggers, setting up collision layers/masks, raycasting for ground checks or line-of-sight, or connecting bodies with joints.
- Use when scenes/prefabs contain
Rigidbody+Collidercomponents.