# Problem Set: Returns

This section contains a number of selected problems for the Returns section.

It is recommended that you review the problems, and complete a few before moving on to the next section.

## Problem #1: Current Season

Implement a `||functions:function||`

called `||functions:currentSeason||`

that
returns a `||text:string||`

describing the current season
(for example, “Spring”, “Summer”, “Autumn”, or “Winter”).

## Problem #2: Favorite Food

Write a short program in which you create a variable called `||variables:favoriteFood||`

,
and set it equal to the string describing what the player’s favorite food is
(use `||game:game.askForString||`

).

Then, implement a `||functions:function||`

called `||functions:getFavoriteFood||`

that takes in no parameters and returns the current value of `||variables:favoriteFood||`

.

## Problem #3: createEnemy

Implement a `||functions:function||`

called `||functions:createEnemy||`

that takes no
parameters and uses `||sprites:sprites.create||`

to return a `||sprites:sprite||`

of
kind `Enemy`

with an evil looking image.

## Problem #4: Brick Builder

Implement a `||functions:function||`

called `||functions:createBrick||`

that takes in
three numbers as parameters: `||variables:width||`

, `||variables:height||`

,
and `||variables:color||`

.
The function should then return an `||images:Image||`

with these attributes.
To do this, you will need to use two new functions, `||images:image.create||`

and `||images:Image.fill||`

.

The function `||images:image.create||`

takes in a `||variables:width||`

and
a `||variables:height||`

and returns a transparent `||images:Image||`

with those dimensions.

`image.create(0, 0);`

Once you have an `||images:Image||`

`||variables:myImage||`

,
calling the function`||images:myImage.fill||`

will modify the `||images:image||`

be completely filled with the given `||variables:color||`

.

`image.create(0, 0).fill(0);`

When you are done, add it to the following snippet: the result should be a red bar across the center of the screen.

```
// Your function here
let myBrick = createBrick(screen.width, 16, 2);
sprites.create(myBrick);
```

## Problem #5: Conversions

Angles can be tricky because there are two basic units: **degrees** and **radians**.
Degrees tend to be more commonly used for day-to-day purposes,
but radians are more commonly used in math and science.
In this problem, you will implement two `||functions:functions||`

to allow you
to convert from one to the other.

It is important to know how exactly the values are measured when trying to convert from one unit to another.

A full circle can be represented by 360 degrees and by 2π radians
(π, or pi, is represented in JavaScript as `||math:Math.PI||`

):
if you divide both by two, you can see that `180 degrees`

is equal to `π radians`

.
Using this information, you can convert a number from degrees to radians by multiplying
the value by `||Math:Math.PI||`

and dividing it by 180.

Implement a `||functions:function||`

called `||functions:toRadians||`

that takes an
input called `||variables:angle||`

that is an angle represented in degrees and returns
the radian equivalent of that angle.

Finally, implement another `||functions:function||`

called `||functions:toDegrees||`

that takes an input called `||variables:angle||`

that is an angle represented in radians
and returns the degree equivalent of that angle.