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unity-physics

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Set up 3D physics in Unity 6.3 LTS: Rigidbody movement and forces, colliders, triggers vs collisions, layer-based collision, raycasts, and joints. Use when adding a Rigidbody, handling OnCollisionEnter/OnTriggerEnter, tuning collision layers, casting rays, or when the user mentions Unity physics, AddForce, isKinematic, or linearVelocity.

When to use

• Use when giving an object physical motion (forces, velocity, gravity), responding to
• Use when scenes/prefabs contain `Rigidbody` + `Collider` components.

When not to use

• 2D physics (Rigidbody2D, Collider2D)
• Cross-engine feel tuning (timestep, jitter, tunnelling)
• Reading input that drives movement

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