Collision with specific object...

I have a cube chasing me in my game. I have some water in my game.

I would like it so when the cube collides with the water (daylight simple water), it carries on for chasing for 2 seconds then destroys itself.

I don’t have any code at the moment. I would really appreciate it if it were actual code apposed to a tutorial.

give a tag to the water, the word “water” is just fine. In the class of the cube put a variable

bool collisionTIme;

then check the collision

void OnCollisionEnter (Collider target) {
     if( target.gameObject.tag.Equals("water") == true ){
          collisionTime = Time.time;
     }
}

void OnCollisionStay (Collider target) {
     if( target.gameObject.tag.Equals("water") == true ){
          if( Time.time - collisionTime > 2 ){
                Destroy(gameObject);
          }
     }
}

}

You should use OnCollisionEnter: Unity - Scripting API: Collider.OnCollisionEnter(Collision)

And if you want to make it with specific object, try something like

function OnCollisionEnter (hit : Collision)
{
     if(hit.transform.gameObject.name == "name")
     {
          //do stuff
     }
}