Create with Code - Unit 1 review

Which Unity window contains a list of all the game objects currently in your scene?

• Scene View

• Project window

• Hierarchy

• Inspector

Answer explanation

The Hierarchy window contains a list of every GameObject in the current

Scene. As objects are added and removed in the Scene, they will appear and

disappear from the Hierarchy as well.

True or False: Visual Studio is not a part of Unity. You could use a different code editor to edit your C# scripts if you wanted to.

• True

• False

Answer explanation

True. Visual Studio is just one of many editors you could use to edit your

code, including editors like Atom, Sublime, or even a basic Text Editor.

What best describes the difference between the below images, where the car is in the second image is further along the road?

• The second car’s X location value is higher than the first car’s

• The second car’s Y location value is higher than the first car’s

• The second car’s Z location value is higher than the first car’s

• The second car’s Transform value is higher than the first car’s.

Answer explanation

You can tell which axis the car has moved along using the XYZ directional gizmo in the top-right, which shows the blue axis pointing forwards down the road.

In what order do you put the words when you are

declaring a new variable?

• [data type] [access modifier]

  [variable value] [variable name]

• [access modifier] [data type]

  [variable name] [variable value]

• [data type] [access modifier]

  [variable name] [variable value]

• [variable name] [data type]

  [access modifier] [variable value]

Answer explanation

Variables are always declared in the order:

[access modifier] - public, private, etc

[data type] - float, int, GameObject, etc

[variable name] - speed, turnSpeed, player, offset, etc

[variable value] - 1.0f, 2, new Vector3(0, 1, 0), etc

Which of the following variables would be visible in the Inspector?

• speed

• turnSpeed

• speed & turnSpeed

• horizontalInput & forwardInput

Answer explanation

“public float speed” would be visible because it has the “public” modifier

applied to it

What is a possible value for the horizontalInput variable?

• -10

• 0.52

• "Right"

• Vector3.Up

Answer explanation

Input.GetAxis returns a float value between -1 and 1, which means 0.52 is a

possible value

What is true about the following two lines of code?

• They will both move an object

  the same distance

• They will both move an object

  in the same direction

• They will both move an object

  along the same axis

• They will both rotate an object,

  but along different axes

Answer explanation

Vector3.forward is the equivalent of (0, 0, 1), which has the same magnitude as (1, 0, 0), even though they’re in different directions, so they would both move an object the same distance, but along different axes

Which of the following lines of code is using standard Unity naming conventions?

• Line A

• Line B

• Line C

• Line D

Answer explanation

“public float speed = 40.0f;” uses the correct naming conventions because all three of these terms should start with lowercase letters

Which comment would best describe the code below?

• // Rotates around the Y axis based on left/right arrow keys

• // Rotates around the Z axis based on up/down arrow keys

• // Rotates in an upward direction based on left/right arrow keys

• // Moves object up/down based on the the left/right arrow keys

Answer explanation

Vector3.Up is the Y axis and it’s using the Horizontal input value, so it would rotate around the Y axis when the user presses the left/right arrows

The image below shows the preferences window that allows you to change which script editing tool (or IDE) you want to use. Where would you click to choose an alternative code editing tool?

• The red box (External Script Editor)

• The blue box (Image application)

• The green box (Revision control Diff/Merge)

Answer explanation

You would click on the Red box to change the “External Script Editor” from Visual Studio to another tool.