Setting up sprites
We will now add enemy scripts and set up sprites.
First on our agenda is setting up the Enemy prefab and script. Let's take a look at the Enemy prefab. The prefab was imported with all of the starting materials in Chapter 2. Just in case you need an extra copy of the Enemy prefab though, there will be an import file in the accompanying Chapter 7 files.
The Enemy prefab looks a lot like the Player prefab. Both the Enemy and Player classes inherit from the Moving Object class. This means the enemy movement and animations are going to be processed in a similar way to the Player class. This generally means the prefab structure will have to be similar.

Enemy Sprite
Requirements for our Enemy prefab include:
A Sprite Renderer
An Animator
A Box Collider 2D
A Rigid Body 2D
The Enemy Script
Also, be sure that these options are selected in your Enemy prefab:
Set the tag to Enemy
Set the layer to BlockingLayer
In the Sprite Renderer component, set the Sorting Layer field to Units
In the Animator...