BELL RINGER: Unity C# Review 1

You are trying to STOP spawning enemies when the player has died and have created the two scripts below to do that. However, there is an error on the underlined code, “isAlive” in the EnemySpawner script. What is causing that error?

• The “p” should be capitalized in “playerController.isAlive”

• The “bool” in the PlayerController class needs a “public” access modifier

• The if-statement cannot be in the Update method

• “isAlive” must start with a capital “I” (“IsAlive”)

In your game, you want to increase the player's health by 10 points when they pick up a health pack. You've written the following line in your script, but it's not working: playerHealth =+ 10;. What is the correct way to write this line?

• playerHealth =+ 10;

• playerHealth += 10;

• playerHealth = 10+;

• playerHealth +== 10;

To create a more dynamic game, you decide to randomly generate the color of an object at the start of the game. Which of the following code snippets correctly changes the object's color to a random color?

• gameObject.GetComponent().material.color = Random.Color();

• gameObject.GetComponent().material.color = new Color(Random.value, Random.value, Random.value);

• gameObject.GetComponent().material.color = Color.Random();

• gameObject.GetComponent().material.color = Color(new Random.value, new Random.value, new Random.value);

When you run a project with the code below, you get the following error: “NullReferenceException: Object reference not set to an instance of an object.” What is most likely the problem?

• 
  The Player object does not have a collider

• The Enemy object does not have a Rigidbody component

• The “Start” method should actually be “Update”

• There is no object named “Player” in the scene

Which of these is the correct way to get a reference to an AudioSource component on a GameObject?

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• Line A

• Line B

• Line C

• Line D