Introduction to Unity Meetup 4

[NEW] If it says, “Hello there!” in the console, what code was used to create that message?

• Debug(“Hello there!”);

• Debug.Log("Hello there!");

• Debug.Console(“Hello there!”);

• Debug.Log(Hello there!);

If you want to destroy an object when its health reaches 0, what code would be best in the blank space below?(See live stream for code)

private in health = 0;

void Update() {

if (________________) {

Destroy(gameObject);

}

}

• health > 0

• health.0

• health < 1

• health < 0

The code below creates an error that says, "error CS1503: Argument 1: cannot convert from 'UnityEngine.GameObject[]' to UnityEngine.Object'". What could you do to remove the errors?

public GameObject[] enemyPrefabs;

void Start()

{

Instantiate(enemyPrefabs);

}

• On line 1, change "enemyPrefabs" to "enemyPrefabs[0]"

• On line 3, change "Start()" to "Update()"

• On line 5, change "enemyPrefabs" to "enemyPrefabs[0]"

Which comment best describes the following code?

public class PlayerController : MonoBehaviour

{

//Comment

private void OnTriggerEnter(Collider other){

Destroy(other.gameObject);

}

}

• //If player collides with another object, destroy player

• //If enemy collides with another object, destroy the enemy

• //If player collides with a trigger, destroy player

• //If player collides with another object, destroy the other object

If you want to move the character up continuously as the player presses the up arrow, what code would be best in the two blanks below"

if (Input.___________(__________))

{

transform.Translate(Vector3.up);

}

• GetKey(KeyCode.UpArrow)

• GetKeyDown(UpArrow)

• GetKeyUp(KeyCode.Up)

• GetKeyHeld(Vector3.Up)

[NEW] What will happen when a red ball with a RigidBody and Collider component collides with another blue ball with RigidBody but NO Collider component?(Gravity is disabled)

• The balls will go through eachother

• The red will bounce off the blue ball

• The blue ball will bounce off the red ball

• They will both bounce off eachother

[NEW] What will happen when a red ball with NO RigidBody and a Collider component collides with another blue ball with RigidBody and a Collider component?(Gravity is disabled)

• The balls will go through eachother

• The red ball will bounce off the blue ball

• The blue ball will bounce off the red ball

• They will both bounce off eachother

[NEW] What will happen when a red ball with NO RigidBody and a Collider component collides with another blue ball with NO RigidBody and a Collider component?(Gravity is disabled)

• The balls will go through eachother

• The red ball will bounce off the blue ball

• The blue ball will bounce off the red ball

• They will both bounce off eachother

[NEW] What will happen when a red ball with a RigidBody and a Trigger Collider component collides with another blue ball with a RigidBody and a regular non-trigger Collider component?(Gravity is disabled)

• The balls will go through eachother

• The red ball will bounce off the blue ball

• The blue ball will bounce off the red ball

• They will both bounce off eachother

[NEW] If you only want the red ball to detect whether its bounding box overlaps with another bounding box, should you have it be a trigger or non-trigger collider?

• Trigger collider

• Non-trigger collider