2D Game Development 2D Game Design and Development 3

Question 1

What is 'collision detection' in a 2D game?

Accepted Answer

Determining when two game objects overlap or touch

Answer

Collision detection checks whether objects intersect so the game can respond.

Question 2

An 'AABB' collision check refers to colliding what kind of shapes?

Accepted Answer

Axis-aligned bounding boxes

Answer

AABB stands for axis-aligned bounding box, a fast rectangle-overlap test.

Question 3

Why is 'delta time' used in game update loops?

Accepted Answer

To make movement frame-rate independent

Answer

Multiplying movement by delta time keeps motion consistent regardless of frame rate.

Question 4

In 2D physics, what does 'velocity' represent?

Accepted Answer

The rate of change of position over time

Answer

Velocity is how fast and in what direction an object's position changes.

Question 5

What is a common technique to handle a character jumping in a 2D platformer?

Accepted Answer

Apply an upward velocity then a constant downward gravity each frame

Answer

Jumping sets an initial upward velocity that gravity gradually reduces and reverses.

2D Game Development Practice Test