To implement an object that is both solid and capable of triggering events, a two-collider approach is recommended. This setup ensures that the physics engine handles both spatial occupation and event notification independently.

1. Attach a Collider component to your object to define the primary physical boundaries.
2. Ensure the isTrigger property is disabled on this specific collider to block movement.
3. Create a child GameObject or add a secondary Collider component to the primary object.
4. Enable the isTrigger property on the secondary collider to handle event detection logic.
5. Scale the trigger collider dimensions to be slightly larger than the solid collider to ensure OnTriggerEnter signals are received reliably before or during contact.

When moving your script logic for a dynamic Rigidbody, use Rigidbody.AddForce rather than directly modifying Transform.position. Bypassing the physics engine via position overrides often causes the isTrigger callbacks to fail or objects to tunnel through solid geometry at high velocities.

Additional Tips

• Enable Interpolation on the Rigidbody component to prevent visual stuttering when physics forces are applied.
• Set Collision Detection to Continuous for fast-moving objects to prevent them from passing through geometry.
• Configure the Physics Layer Collision Matrix to ignore collisions between the solid and trigger layers if they occupy the same space to reduce overhead.