2D Game Development Engine 4

Question 1

Which broad-phase technique helps a 2D engine avoid checking every object pair for collisions?

Accepted Answer

Spatial partitioning (e.g., grid or quadtree)

Answer

Gamma correction

Answer

Anti-aliasing

Answer

Audio resampling

Question 2

What is AABB collision detection?

Accepted Answer

Axis-aligned bounding box overlap testing

Answer

A shader lighting model

Answer

An audio compression scheme

Answer

A networking protocol

Question 3

In a 2D physics engine, what does 'restitution' control?

Accepted Answer

The bounciness of a collision

Answer

The sprite's color

Answer

The frame rate

Answer

The texture resolution

Question 4

What is the difference between a kinematic body and a dynamic body in a 2D physics engine?

Accepted Answer

Kinematic is moved by code and ignores forces; dynamic responds to forces

Answer

Kinematic renders faster; dynamic renders slower

Answer

Kinematic is 3D; dynamic is 2D

Answer

There is no difference

Question 5

What is a 'sensor' or 'trigger' collider used for?

Accepted Answer

Detecting overlap without producing a physical collision response

Answer

Playing background music

Answer

Rendering shadows

Answer

Caching textures

Question 6

Why might continuous collision detection (CCD) be needed in a 2D engine?

Accepted Answer

To stop fast objects from tunneling through thin colliders

Answer

To improve audio quality

Answer

To reduce texture memory

Answer

To sort the scene graph

Question 7

What does the 'mass' property of a 2D rigid body primarily affect?

Accepted Answer

How much it accelerates under a given force

Answer

Its sprite color

Answer

Its animation speed

Answer

Its draw order