Bullet collision event

Let’s say for example, zombie[i], is the array of every object of the enemy.

And bullet[i] is you know, your bullet. Moving in a straight line at an angle.

Both are in a physics world. Both Dynamic.

How would my collision event go? Check single every zombie with every single bullet?

Any more memory saving ways to go about this? [import]uid: 49300 topic_id: 13706 reply_id: 313706[/import]