Approaching UI
We will learn about some more advanced features of User Interfaces (UI) in Chapter 8, User Interface for the Tower Defense Game. However, I recommend that you read a specific book about UI, if you want to master it. For instance, Unity UI Cookbook, Packt Publishing.
To make our level a little more enjoyable, we should add some UI elements to indicate the player's health and score. So let's do that!
In order to add some UI elements, we need a canvas. Usually, every time we create a UI element for the first time in the scene, a canvas is created as well. However, you can also create one by right-clicking in the Hierarchy panel and then clicking on UI | Canvas. A new object is added to our scene, with the name Canvas.
A canvas is an area that all UI elements must be children of. Let's start by adding some UI text under it. We can add it by right-clicking on the Hierarchy panel and then UI | Text. As a result, a new object named Text under Canvas has been created.
First, let's rename...
