Collider2D types (box, circle, polygon) in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a BoxCollider2D component to the GameObject.

Unity

gameObject.AddComponent<[1]>();

Drag options to blanks, or click blank then click option'

ACircleCollider2D

BBoxCollider2D

CPolygonCollider2D

DRigidbody2D

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing CircleCollider2D or PolygonCollider2D instead of BoxCollider2D.

The BoxCollider2D component adds a box-shaped collider to the GameObject.

2fill in blank

medium

Complete the code to add a CircleCollider2D component and set its radius to 2.5.

Unity

var collider = gameObject.AddComponent<[1]>(); 
collider.radius = 2.5f;

Drag options to blanks, or click blank then click option'

ACircleCollider2D

BPolygonCollider2D

CEdgeCollider2D

DBoxCollider2D

Attempts:

3 left

💡 Hint

Common Mistakes

Using BoxCollider2D which does not have a radius property.

The CircleCollider2D component adds a circular collider, and the radius property sets its size.

3fill in blank

hard

Fix the error in the code to add a PolygonCollider2D component.

Unity

PolygonCollider2D collider = gameObject.AddComponent<[1]>();

Drag options to blanks, or click blank then click option'

ACircleCollider2D

BBoxCollider2D

CCapsuleCollider2D

DPolygonCollider2D

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different collider type name that does not match the variable type.

The PolygonCollider2D component is added using its exact type name inside the AddComponent<> method.

4fill in blank

hard

Fill both blanks to create a BoxCollider2D and set its size to (5, 4).

Unity

var collider = gameObject.AddComponent<[1]>(); 
collider.size = new Vector2([2], 4);

Drag options to blanks, or click blank then click option'

ABoxCollider2D

BCircleCollider2D

CPolygonCollider2D

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using CircleCollider2D which does not have a size property.

Setting size with wrong values.

Use BoxCollider2D to add the box collider, and set the size property with a Vector2 where the width is 5 and height is 4.

5fill in blank

hard

Fill the two blanks to add a PolygonCollider2D, set its path count to 1, and define a triangle shape.

Unity

var collider = gameObject.AddComponent<[1]>(); 
collider.pathCount = [2]; 
collider.SetPath(0, new Vector2[] { new Vector2(0,0), new Vector2(1,0), new Vector2(0,1) });

Drag options to blanks, or click blank then click option'

ABoxCollider2D

B1

CPolygonCollider2D

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using BoxCollider2D instead of PolygonCollider2D.

Setting pathCount to wrong number.

Use PolygonCollider2D to add the polygon collider, set pathCount to 1 to define one shape, and use SetPath to set the triangle points.