To get started, the first thing we'll need to do is add in our backgrounds:
Art Assetsfolder in the example code folder for this chapter, bring the
backgroundsprite into the Project tab under the
Assets/Spritesfolder by dragging and dropping it there.
These assets are also created by Kenney and the art provided in addition to additional plane colors and assets can be found at http://kenney.nl/assets/tappy-plane.
backgroundsprite from the Project tab, you'll notice that the Inspector tab should have Texture Type set to
Sprite (2D and UI). If not, change it and then press the Apply button.
At this point, I want to point out the Pixels Per Unit property as it is important for our logic in the code ...