Is Trigger and OnTriggerEnter(), Destroy()

1. Trigger:

• If two objects are both added Collider component and at least one of them is checked the "Is Trigger" attribute, then OnTriggerEnter() can be used in anyone.

• Trigger can go into the object.

2. Destroy():

Destroy(gameObject);
Destroy(gameObject, 2.0f); //delay 2 seconds