2D Game Development Engine 3

Question 1

What is a sprite atlas (texture atlas) used for in a 2D engine?

Accepted Answer

Packing many images into one texture to reduce draw calls

Answer

A texture atlas combines many sprites into one texture, reducing draw calls and improving performance.

Question 2

Which technique batches many sprites into a single draw call?

Accepted Answer

Sprite batching

Answer

Sprite batching groups sprites sharing a texture into one draw call for efficiency.

Question 3

In a tile-based 2D engine, what is a tilemap?

Accepted Answer

A grid of indexed tiles forming a level

Answer

A tilemap is a grid referencing tiles from a tileset to build levels efficiently.

Question 4

What is the benefit of object pooling in a 2D engine?

Accepted Answer

Reusing objects to reduce allocation and garbage collection

Answer

Object pooling reuses pre-allocated objects, reducing runtime allocations and GC spikes.

Question 5

What does a camera component typically control in a 2D engine?

Accepted Answer

The viewport's position, zoom, and what is visible

Answer

The camera defines the visible viewport, including position and zoom over the game world.

2D Game Development Practice Test