Learning 2D Game Development with Unity®: A Hands-On Guide to Game Creation

Creating Your First Enemy

The player can run and jump and fall down pits, but they’re probably going to need more of a challenge—and more variety—than that. Let’s add a Slime enemy to the world that the player must avoid. We’ll give it a classic “shambler” Artificial Intelligence, or AI; it will walk in one direction until it encounters a wall, at which point it will turn around and head the other way. It will also change direction if it collides with another enemy of its kind.