Unity in Action, Third Edition

3 Adding enemies and projectiles to the 3D game

This chapter covers

• Taking aim and firing, both for the player and for enemies

• Detecting and responding to hits

• Making enemies that wander around

• Spawning new objects in the scene

The movement demo from the previous chapter was pretty cool but still not really a game. Let’s turn that movement demo into a first-person shooter. If you think about what else we need now, it boils down to the ability to shoot and having things to shoot at.

First, we’re going to write scripts that enable the player to shoot objects in the scene. Then, we’re going to build enemies to populate the scene, including code to both wander around aimlessly and react to being hit. Finally, we’re going to enable the enemies ...