The controls to your game are the crux of your player's experience, so it's important to make each action feel like it impacts the game in a meaningful way. A control scheme that includes jumping wouldn't suit a level with no obstacles to jump over, and a control scheme that includes shooting won't do if there's nothing to shoot at.
In this section, we'll create some targets for the firing mechanic you created in the previous section, and the objectives of our game will start to take form (as will our level's environment).
Eventually, the targets in our game will be other real players when we implement online multiplayer later in this book, but for now, we'll just implement a target dummy to test our mechanics.
Create a new Cylinder object from the Create menu in your Hierarchy window and position it on the floor at the origin of your scene. Center the scene view on it and then create a new Sphere object, positioning it directly on the...