Why 2D is the best starting point in Unity - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a 2D sprite in Unity.

Unity

GameObject sprite = new GameObject();
sprite.AddComponent<[1]>();

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ASpriteRenderer

BMeshRenderer

CBoxCollider

DRigidbody

Attempts:

3 left

💡 Hint

Common Mistakes

Using MeshRenderer which is for 3D objects.

In Unity, to display a 2D image, you add a SpriteRenderer component to a GameObject.

2fill in blank

medium

Complete the code to move a 2D object horizontally using the arrow keys.

Unity

float move = Input.GetAxis("Horizontal");
transform.Translate(move * [1] * Time.deltaTime, 0, 0);

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Aspeed

BdeltaTime

CTime.fixedDeltaTime

Dgravity

Attempts:

3 left

💡 Hint

Common Mistakes

Using Time.fixedDeltaTime instead of speed.

The variable speed controls how fast the object moves horizontally.

3fill in blank

hard

Fix the error in the code to detect a 2D collision.

Unity

void OnCollisionEnter2D(Collision2D [1]) {
    Debug.Log("Collision detected");
}

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Acol

Bcollision

Cother

Dhit

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name that does not match the method signature.

The parameter name can be anything, but collision is commonly used and matches the method signature.

4fill in blank

hard

Fill both blanks to create a dictionary of 2D game objects with their names as keys.

Unity

Dictionary<string, GameObject> [1] = new Dictionary<string, GameObject>();
[2].Add("Player", playerObject);

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AgameObjects

BplayerObject

Cobjects

Dplayer

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names for the dictionary.

The dictionary variable name must be consistent. Here, gameObjects is used both times.

5fill in blank

hard

Fill all three blanks to create a 2D vector, normalize it, and print its magnitude.

Unity

Vector2 direction = new Vector2([1], [2]);
Vector2 normalized = direction.[3]();
Debug.Log(normalized.magnitude);

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A3

B4

Cnormalized

DNormalize

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'normalized' instead of 'Normalize' method.

The vector is created with (3,4), then normalized using Normalize() method.