CS Disco Game Lab Lessons 18-19 Progress Check

Abstraction is all of these except...

• a way to simplify something complicated.

• allows you to hide details and manage complex code.

• allows you to reason about problems at a higher level.

• a way to make details more complicated and harder to understand.

A function ...

• is a group of commands (blocks) that you give a name so that you can use it only once.

• is a group of commands (blocks) that you give a name so that you can use it over and over again.

• is a group of commands (blocks) that you can not give a name or use it over and over again.

• contains one single command that you give a name so that you can use it over and over again.

Check ALL that apply. A function is an abstraction because...

• it hides many commands into one block.

• it makes it easier to reason about more complex programming.

• removes repetition of details making code easier to read.

• you can call it in your program.

Why use functions? Select ALL that apply.

• to keep your code organized

• to keep your code readable

• to keep your code a secret

• to remove repetition

Whenever you want to use a function, you...

• define it

• call it by its name

• give it four commands

• give it two commands

Which of the following is not a collison block in Game Lab?

• displace

• collide

• bounceOff

• bounceOn

Displace, collide, bounce, and bounceOff are four types of collisions available in Game Lab and must be used outside of the draw function.

• True

• False

The "displace block"...

• makes a sprite stop when it runs into things. You can use it when you want your sprite to be blocked by obstacles.

• makes a sprite push another sprite (the target) as long as they are touching each other.

• makes the sprite and the target bounce when they touch each other. Both the sprite and the target change how they are moving.

The "bounceOff block"...

• makes the sprite and the target bounce when they touch each other. Both the sprite and the target change how they are moving.

• makes a sprite push another sprite (the target) as long as they are touching each other.

• makes the sprite bounce off the target when they touch each other. The target keeps moving as before.

To create a function, you need to put all of the commands inside a function block and type your function's name into the space at the top of the function block.

• True

• False