cs.yaml

levels:
    0:
        1:
            header: Welcome to Hedy!
            text: Hedy is a programming language.
        2:
            header: Programming
            text: |-
                Programming is giving instructions to a computer, using the language of the computer.

                Such a language is called a "programming language".
        3:
            header: Programming Language
            text: |-
                Maybe you already know some programming languages?
                Some examples are:
                * Scratch
                * Python
                * HTML
        4:
            header: Programming
            text: |-
                If you can program, you can do many cool things:
                * Build interactive stories
                * Create computer drawings and draw these on paper or fabric
                * Build your own apps to use on your phone
        5:
            header: Programming in Hedy
            text: In Hedy we use special codes, like `{print}`.
            code: '{print} Welcome to Hedy!'
        6:
            header: Programming in Hedy
            text: Code words will be shown in pink.
            code: '{print} Welcome to Hedy!'
        7:
            header: Programming in Hedy
            text: We start the code with the Run code button underneath the code.
            code: '{print} Welcome to Hedy!'
        8:
            header: Programming in Hedy
            text: Output appears on the left-hand side.
            code: '{print} Welcome to Hedy!'
        9:
            header: Programming in Hedy
            text: The output can also be a drawing.
            code: |-
                {forward} 100
                {turn} left
    1:
        1:
            header: Welcome to level 1!
            text: |-
                We will start level 1 by making stories in Hedy!

                We need three text codes to create interactive stories.
        2:
            header: 'Hedy level 1: {print}'
            text: |-
                The first code that you can use in level 1 is `{print}`.

                `{print}` is used to show text on the screen.
            code: '{print} Show text on the screen'
        3:
            header: 'Hedy level 1: {ask}'
            text: |-
                The second code that you can use in level 1 is `{ask}`.

                `{ask}` is used to ask a question that can be answered.
            code: |-
                {print} Welcome to your own rock scissors paper!
                {ask} What will you choose?
        4:
            header: 'Hedy level 1: {echo}'
            text: |-
                The final text code that you can use in level 1 is `{echo}`.

                `{echo}` is used to repeat the answer of an `{ask}`.
            code: |-
                {print} Hello!
                {ask} What is your name?
                {echo} hello
        5:
            header: Programming!
            text: |-
                with `{print}`, `{ask}` and `{echo}` you can already create a little story.
                This is a good time to try the Parrot, Story and Rock, Paper Scissors adventures.
            code: |-
                {print} Hello!
                {ask} What is your name?
                {echo} hello
        6:
            header: Programming!
            text: Adventures are shown in tabs.
            editor: /hedy/1
        7:
            header: Programming!
            text: The yellow arrow buttons can be used to copy examples.
            editor: /hedy#print_command
        8:
            header: Drawing with the turtle
            text: Now that we have seen at text codes, we will now look at drawing codes next.
            editor: /hedy#print_command
        9:
            header: 'Drawing with the turtle: {forward}'
            text: '`{forward}` is used to move the turtle forward.'
        10:
            header: 'Drawing with the turtle: {forward}'
            text: '`{forward}` is used to move the turtle forward.'
            code: '{forward} 50'
        11:
            header: 'Drawing with the turtle: {turn}'
            text: '`{turn}` is used to make the turtle turn left or right.'
            code: |-
                {forward} 50
                {turn} left
        12:
            header: Debugging
            text: Debugging a code means getting rid of mistakes in the code. Let's debug this code together. Click the ladybug button to start the debugger.
            code: |-
                I am DJ Hedy
                {print} What song would you like to hear?
                {ask} I like that song too!
                {print} Next up... {echo}
            debug: 'True'
        13:
            header: Let the programming fun begin!
            text: Enjoy the adventures in level 1!
    2:
        1:
            header: Welcome to level 2
            text: |-
                In this level you will learn to use variables.

                A variable is a word that can be used to store information.

                For example: a name, age or favorite sports team.
        2:
            header: Variables
            text: To make or 'set' a variable we use the `{is}` command
            code: |-
                name {is} Hedy
                age {is} 15
                {print} name is age years old
        3:
            header: Interactive
            text: |-
                We can also set a variable by asking questions.

                The answer to the question is stored in the variable.

                This way we don't need the `{echo}`  command.
            code: |-
                name {is} {ask} What is your name?
                {print} Hello name
        4:
            header: Multiple variables
            text: Now that we use variables, we can use multiple variables instead of just one `{echo}`command.
            code: |-
                name {is} {ask} What is your name?
                {print} Hello name
                age {is} {ask} How old are you?
                {print} name is age years old.
        5:
            header: Sleep
            text: You can also use the `{sleep}` command to pause the code for a while.
            code: |-
                {print} My favorite colour is...
                {sleep} 2
                {print} green!
        6:
            header: Sleep 5
            text: |-
                You can add a number after the `{sleep}` command if you want the pause to be longer.

                If you want, you could even use a variable instead of a number to decide the duration of the sleep command.
            code: |-
                pause {is} 10
                {print} My favorite colour is...
                {sleep} pause
                {print} green!
        7:
            header: Debugging
            text: Debugging a code means getting rid of mistakes in the code. Let's debug this code together. Click the ladybug button to start the debugger.
            code: |-
                {print} Welcome to the donut shop!
                filling {is} What kind of filling would you like?
                {print} You have chosen... Filling! Yum!
                topping {ask} What kind of topping would you like?
                topping is delicious!
                {print} I'll go get your donut. {sleep}
                {print} Here you go! A filling donut with toping!
                {ask} Have a nice day!
            debug: 'True'
        8:
            header: Let the programming fun begin!
            text: Enjoy the adventures in level 2!
    3:
        1:
            header: Welcome to level 3
            text: In this level you'll learn how to make a list, add and remove items form your lists and pick a random item off that list.
        2:
            header: Making a list
            text: |-
                You make a list with `{is}`.

                Separate the items on your list with a comma.
            code: animals {is} dogs, cats, kangaroos
        3:
            header: At random
            text: |-
                You can use the list with the `{at}` `{random}` command.
                The computer will randomly pick one item of the list.
                Every time you run this code the output will differ.
            code: |-
                animals {is} dogs, cats, kangaroos
                {print} animals {at} {random}
        4:
            header: At random in a sentence
            text: You can use the `{at}` `{random}` command in a sentence as well.
            code: |-
                animals {is} dogs, cats, kangaroos
                {print} My favorite animal is animals {at} {random}
        5:
            header: Add to
            text: |-
                You can add items to a list with the `{add}` `{to}` command.

                You can choose what to add to the list or you can use the `{add}` `{to}` command in combination with the `{ask}` command.
                This way you can let the player decide what to add to the list.
            code: |-
                animals {is} dog, cat, kangaroo
                like {is} {ask} What is your favorite animal?
                {add} like {to_list} animals
                {print} I choose animals {at} {random}
        6:
            header: Remove from
            text: |-
                The opposite of the `{add}` `{to}` command is the  `{remove}` `{from}` command.
                This command removes an item from a list.
            code: |-
                animals {is} dog, cat, kangaroo
                dislike {is} {ask} What animal do you not like?
                {remove} dislike {from} animals
                {print} I choose animals {at} {random}
        7:
            header: Debugging
            text: Let's debug this code!
            editor: |-
                music_genres {is} rock, pop, metal, indie, jazz
                chosen_genre is music {at} {random}
                {print} Let's listen to chosen genre
                nice {ask} Do you like that genre?
                {remove} chosen_genre {from} chosen_genre
                second_choice {is} music_genres
                {print} or do you prefer... second_choice {at} {random}
                {remove} second_choice {to} music_genres
                {print} I like music_genre {random} best!
            debug: 'True'
        8:
            header: Let's get to work!
            text: Enjoy the adventures in level 3!
    4:
        1:
            header: Welcome to level 4
            text: In this level you will learn how to use quotation marks.
            code: '{print} ''print with quotes!'''
        2:
            header: Problem
            text: 'In the previous levels, you might have come across this problem:'
            code: |-
                name {is} Sophie
                {print} My name is name
            debug: 'True'
        3:
            header: Fixing it with quotation marks
            text: |-
                In this level we will fix this problem by using quotation marks.

                This also makes our code look more like 'real' Python code.
        4:
            header: Quotation marks with print
            text: Each time you use the `{print}` command you need to put the text that you want to appear on the screen in quotation marks.
            code: '{print} ''print with quotes!'''
        5:
            header: Quotation marks with ask
            text: This also goes for the `{ask}` command.
            code: name {is} {ask} 'name please?'
        6:
            header: Quotation marks and variables
            text: |-
                You do not want variable names to be printed on the screen.
                This is why variables should be left out of the quotation marks, like this:
            code: |-
                name {is} Harry
                {print} 'Hello ' name
        7:
            header: Quotation marks and variables
            text: |-
                When variable names are used in the middle of a sentence, you have to leave the variables out of the quotation marks.
                The rest of the sentence however, does need quotation marks. That looks like this:
            code: |-
                name {is} Harry
                {print} 'Hello ' name ', how are you?'
        8:
            header: Quotation marks and contractions
            text: |-
                Be careful! Now that you are using quotation marks, you can't use apostrophes in contractions.

                Please try to print a contraction like "you're" or "I'm" in the screen below and see what happens....
            code: '{print} ''This won''t work!'''
            debug: 'True'
        9:
            header: Ready, Set, Go!
            text: Enjoy the adventures in level 4!
            code: |-
                {print} '3'
                {clear}
                {print} '2'
                {clear}
                {print} '1'
                {clear}
                {print} 'SURPRISE!'
        10:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {clear}
                {print} What a nice day to go to the beach!
                {ask} 'Do you want to build a sandcastle or swim in the ocean?'
                {print} 'You would like to activity '
                {print} 'I'd like to do that too'
                {print} 'Look at these beautiful seashells!'
                colors {is} 'orange, silver, white, brown'
                {print} 'I love the colors {at} {random} one!'
                choice {is} {ask} Which one do you like?
            debug: 'True'
        11:
            header: Ready, Set, Go!
            text: Enjoy the adventures in level 4!
    5:
        1:
            header: Welcome to level 5
            text: 'In this level you will learn to use 3 new commands: `{if}`, `{else}` and `{in}`.'
        2:
            header: if
            text: |-
                The `{if}` command allows you to choose between two options.
                In this example the computer will print 'nice' if the given answer is Hedy.
                If the answer is not Hedy, the computer will do nothing.
            code: |-
                name {is} {ask} 'what is your name?'
                {if} name {is} Hedy {print} 'nice'
        3:
            header: Don't forget to print
            text: |-
                When using the `{if}` command, don't forget to use the `{print}` command.
                This code will not work!
            code: '{if} name {is} Hedy ''nice'''
            debug: 'True'
        4:
            header: else
            text: |-
                When using an `{if}` command, you can also add an `{else}` command.
                If the answer is Hedy, the computer will print 'nice'.
                But if the answer is something else the computer will print 'boo'
            code: '{if} name {is} Hedy {print} ''nice'' {else} {print} ''boo!'''
        5:
            header: Long lines
            text: |-
                You might have noticed that your lines can get very long when you have both an `{if}` and an `{else}` command.

                You can choose to separate commands and put them on 2 lines, like this:
            code: |-
                {if} name {is} Hedy {print} 'nice'
                {else} {print} 'boo!'
        6:
            header: Another new command
            text: |-
                If you have practised with the `{if}` and `{else}` commands, you can also try the `{in}` command.

                With `{in}` you can let the computer check if an item is in a list, for example:

                Please note that Hedy is case sensitive. This means that if you answer "Green" instead of "green", Hedy will print "meh".
            code: |-
                pretty_colors {is} green, yellow
                favorite_color {is} {ask} 'What is your favorite color?'
                {if} favorite_color {in} pretty_colors {print} 'pretty!'
                {else} {print} 'meh'
        7:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} Welcome to HedyAir Security!
                boarding_pass {is} {ask} 'Do you have your boarding pass?'
                {if} bording_pass yes {print} Great!
                {else} Please, get your boarding pass ready.
                passport {is} 'Can I see your passport, please?'
                {if} passport {is} yes 'thank you'
                {else} 'You can't fly without a passport'
                declare {is} {ask} Do you have anything to declare?
                {if} declare {is} yes
                item_to_declare {is} {ask} 'What would you like to declare'
                {else} Alright
                {print} Thank you. Please head to gate A22.'
            debug: 'True'
        8:
            header: Let's go!
            text: Enjoy the adventures in level 5!
    6:
        1:
            header: Welcome to level 6
            text: In this level we are adding maths to our codes.
        2:
            header: Addition
            text: If you want to calculate an addition, simply use the plus sign.
            code: '{print} ''5 plus 5 is '' 5 + 5'
        3:
            header: Subtraction
            text: If you want to subtract, you can use the minus sign.
            code: '{print} ''5 minus 5 is '' 5 - 5'
        4:
            header: Multiplication
            text: If you want to do multiplications, you can use the asterisk.
            code: '{print} ''5 times 5 is '' 5 * 5'
        5:
            header: Division
            text: You can use the slash for division.
            code: '{print} ''5 divided by 5 is '' 5 / 5'
        6:
            header: Summary
            text: In summary, you can use +, -, * and / to do maths.
            code: |-
                {print} '5 plus 5 is ' 5 + 5
                {print} '5 minus 5 is ' 5 - 5
                {print} '5 times 5 is ' 5 * 5
                {print} '5 divided by 5 is ' 5 / 5
        7:
            header: The = symbol
            text: |-
                From now on you can also use the = symbol instead of the `{is}` command.
                This goes for both numbers and words, and it also goes after the `{if}` or `{else}` commands.
            code: |-
                name = Hedy
                answer = 20 + 4
        8:
            header: Calculations with variables
            text: 'You can use calculations with numbers, but you can also use variables to do calculations, like this:'
            code: |-
                number_1 = {ask} 'Fill in the first number:'
                number_2 = {ask} 'Fill in the second number:'
                correct_answer = number_1 * number_2
                {print} number_1 ' times ' number_2 ' is ' correct_answer
        9:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} 'This is the water park ticket machine'
                {print} 'Price list: Children under 12 $3, Adults $5'
                {print} 'Mondays are 25% off'
                amount_of_children = 'How many kids tickets would you like?'
                amount_of_adults = 'How many adult tickets would you like?'
                day_of_the_week = {ask} 'What day is it?'
                {clear}
                child_price = amount of children * 3
                adult_price = amount_of_adults + 5
                total_price = adult_price * child_price
                {if} day {is} monday
                total_price = total_price * 0.25
                {print} 'That will be total_price please'
            debug: 'True'
        10:
            header: Let's get to work!
            text: Enjoy the adventures in level 6!
    7:
        1:
            header: Welcome to level 7
            text: In this level you will learn how to repeat a line of code as many times a you'd like.
        2:
            header: repeat 3 times
            text: |-
                If you want to repeat a line of code, you can use the `{repeat}` 3 `{times}` code.
                If you want to repeat the line more times, simply change the number.

                For example: If you are programming a story where your character shouts for help for 5 times, it could look like this:
            code: |-
                {print} 'The prince kept calling for help'
                {repeat} 5 {times} {print} 'Help!'
                {print} 'Why is nobody helping me?'
        3:
            header: Don't forget the print command
            text: When using the repeat command, do not forget the `{print}` command.
            code: '{repeat} 5 {times} ''Help!'''
            debug: 'True'
        4:
            header: Repeat an ask command
            text: You can also repeat an `{ask}`, `{if}` or `{else}` command multiple times.
            code: |-
                {repeat} 2 {times} answer = {ask} 'Did you know you could ask a question multiple times?'
                {if} answer {is} yes {repeat} 2 {times} {print} 'You knew that already!'
                {else} {repeat} 3 {times} {print} 'You have learned something new!'
        5:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} You gave stranded on a desert island.
                {repeat} 3 'Help!'
                rescued = {ask} Has anybody come to the rescue?
                {if} rescued yes {is}
                {print} Lucky!
                {else} {repeat} 3 {times} 'HELP!'
                rescued = 'What about now?'
                {if} yes
                {print} 'Hurray!
                {else} 'That's a shame... Oh well... time to build a shelter and find some food.'
            debug: 'True'
        6:
            header: Ready Set Go!
            text: Enjoy the adventures in level 7!
    8:
        1:
            header: Welcome to level 8
            text: In this level you will learn to use indentation to make the `{repeat}`, `{if}` and `{else}` commands work for multiple lines of code.
        2:
            header: '{repeat} commands before'
            text: |-
                In the previous levels, the `{repeat}` command looked like this:

                You could only repeat one line of code.
            code: '{repeat} 5 {times} {print} ''Help!'''
            debug: 'True'
        3:
            header: '{repeat} commands now'
            text: |-
                In this level you can repeat multiple lines of code. To do this you must tell the computer which lines belong together and should be repeated.
                You do this by using indentation.

                Use 4 spaces (or one tab) at the beginning of each line that you want to repeat, like this:
            code: |-
                {repeat} 5 {times}
                    {print} 'Hello everyone'
                    {print} 'This will be printed 5 times'
        4:
            header: '{repeat} commands now'
            text: |-
                If you want to, you can continue after the `{repeat}` command without indentation.
                The lines that do not start with indentation will not be repeated.
            code: |-
                {repeat} 3 {times}
                    {print} 'Hello!'
                {print} 'We are done repeating!'
        5:
            header: if and else before
            text: |-
                The same goes for the `{if}` and `{else}` commands.
                These were the commands before:
            code: |-
                {if} name {is} Hedy {print} 'nice'
                {else} {print} 'boo!'
            debug: 'True'
        6:
            header: if and else now
            text: |-
                These are the `{if}` and `{else}` commands now.
                Each line after the `{if}` and `{else}` commands start with indentation.
            code: |-
                name = {ask} 'What is your name?'
                {if} name {is} Hedy
                    {print} 'Welcome Hedy'
                {else}
                    {print} 'Welcome programmer!'
        7:
            header: stopping the indentation
            text: Just like with the `{repeat}` command, you can stop using indentation and the lines will always be shown. Not just if the statement is true.
            code: "name = {ask} 'What is your name?'\n{if} name {is} Hedy\n    {print} 'Welcome Hedy'\n{else}\n    {print} 'Welcome programmer!' \n{print} '3..2..1.. Start programming!'"
        8:
            header: if statements inside if statements
            text: |-
                You might have thought of trying to put an if command inside a repeat command, or inside another if command.
                For now, this is not possible yet. In the higher levels, it will be allowed, but for now let's focus on practising the `{if}` `{else}` and `{repeat}` commands with proper indentation first.
        9:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} 'HedyWheels bus tickets machine'
                zone_1 = Town Hall, Library, Campus, Market Place
                zone_2 = Swimming Pool, Skate Park, Mall, Airport
                destination = 'Where do you want to go?'
                {if} destination {in} zone 1
                {print} destination 'is in zone 1'
                price = 3 euros
                    {if} destination {is} zone_2
                {print} destination 'is in zone 2'
                price = 6
                ticket_types = {ask} 'Press 1 for a single use ticket.
                Press 2 for a round trip ticket:'
                {if} ticket_type = 1
                {print} 'You chose a single use ticket'
                {else}
                        {print} You chose a round trip ticket'
                price * 2
                {print} 'That will be ' price ' euros please'
            debug: 'True'
        10:
            header: Let's check out the adventures!
            text: Enjoy the adventures in level 8!
    9:
        1:
            header: Welcome to level 9
            text: |-
                In this level you can use multiple lines of code after an `{if}` or after a `{repeat}` command.

                You can even put a `{repeat}` command within another `{repeat}`  command.
        2:
            header: Multiple lines after `{repeat}`
            text: You are allowed to combine `{repeat}` and `{if}` in this level.
            code: |-
                {repeat} 3 {times}
                    food = {ask} 'What do you want?'
                    {if} food {is} pizza
                        {print} 'nice!'
                    {else}
                        {print} 'pizza is better'
        3:
            header: Indentation matters!
            text: Indentation is very important to tell the computer which lines should be repeated and which lines should only be ran once.
            code: |-
                {repeat} 3 {times}
                    {print} 'This line will be repeated...'
                    {print} 'This one too...'
                {print} 'but this one will not!'
        4:
            header: Multiple lines after `{if}`
            text: You can also use multiple lines after `{if}`
            code: |-
                continue = {ask} 'Do you want to continue?'
                {if} continue = yes
                    sure = {ask} 'Are you sure?'
                    {if} sure {is} yes
                        {print} 'We will continue'
                    {else}
                        {print} 'You are not sure'
                {else}
                    {print} 'You do not want to continue'
        5:
            header: Indentation matters
            text: Again, indentation is still very important and can make a big difference in the code.
            code: |-
                continue = {ask} 'Do you want to continue?'
                {if} continue = yes
                    sure = {ask} 'Are you sure?'
                    {if} sure {is} yes
                        {print} 'We will continue'
                {else}
                    {print} 'You are not sure'
        6:
            header: An `{if}` inside a `{repeat}`
            text: |-
                Now that you can use multiple lines of code after these command, you can also put them within each other.
                Check it out:
            code: |-
                {repeat} 3 {times}
                    food = {ask} 'What do you want?'
                    {if} food {is} pizza
                        {print} 'nice!'
                    {else}
                        {print} 'pizza is better'
        7:
            header: Mind the indentation
            text: Mind that the fourth and sixth line of this code starts with 8 spaces of indentation.
            code: |-
                {repeat} 3 {times}
                    food = {ask} 'What do you want?'
                    {if} food {is} pizza
                        {print} 'nice!'
                    {else}
                        {print} 'pizza is better'
        8:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} 'Welcome to HedyJumps, your parachute jump adventure!'
                people = {ask} 'How many people are you jumping with today?
                {print} 'We'll ask all of you some questions for safety reasons.'
                extra_instructions_people = a, b
                {repeat} 3 {times}
                    name = {ask} 'What is your name?'
                jumped_before = 'Have you ever done a parachute jump before, ' name '?'
                {if} jumped_before  no
                {print} 'No worries, you'll get an extra safety instruction in room 13'
                {add} name {to} extra_instructions_people
                {else}
                {print} 'Fun!'
                {print} 'Thanks for filling in the safety questions everyone. Enjoy your jump!'
            debug: 'True'
        9:
            header: Let's go!
            text: Enjoy the adventures in level 9!
    10:
        1:
            header: Welcome to level 10
            text: 'In this level you will learn a new command: `{for}`.'
        2:
            header: The for command
            text: With for you can make a list and use all items on that list. `{for}` creates a block, like repeat and if so all lines in the block need to start with indentation (4 spaces).
            code: |-
                animals = dog, cat, blobfish
                {for} animal {in} animals
                    {print} 'I love ' animal
        3:
            header: The for command
            text: 'Here you see another example of the `{for}` command:'
            code: |-
                days = Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
                names = mom, dad, Emma, Sophie
                {for} day {in} days
                    {print} names {at} {random} ' does the dishes on ' day
        4:
            header: Debugging
            text: Let's debug this code
            code: |-
                {print} 'Ladies and gentlemen!'
                {print} 'For one night and one night only in circus Hedy!'
                acts = shoot out of a canon, walk the tightrope, pack themself in a suitcase,
                people = Iris the Incredible Achmed the Amazing Francis the Fantastic
                    {for} people {in} acts
                chosen_person {is} people {random}
                    chosen_person ' will ' act
                {add} chosen_person {from} people
                {print} 'Come and watch our show tonight!'
                {print} 'Tickets are only available at the counter
            debug: 'True'
        5:
            header: Time to program!
            text: Enjoy the adventures in level 10!
    11:
        1:
            header: Welcome to level 11
            text: |-
                In this level, we add a new form of the `{for}` command. In earlier levels, we used for with a list, but we can also use for with numbers.

                This way we don't need the `{repeat}` command anymore.
        2:
            header: The for command
            text: 'This is what the new for command looks like:'
            code: |-
                {for} counter {in} {range} 1 {to} 10
                    {print} counter
                {print} 'Ready or not. Here I come!'
        3:
            header: the variable i
            text: |-
                In the previous slide the variable was named 'counter', because it was counting down.
                You can of course use any name for the variable you want.
                The standard name  for variables in this situation that is used in programming languages like Python is 'i'.
                That looks like this:
            code: |-
                number = 10
                {for} i {in} {range} 1 {to} 10
                    {print} i * number
        4:
            header: Debugging
            text: Let's debug this code!
            code: |-
                factor {is} {ask} 'Which table of multiplication do you need?'
                {repeat} {for} numbers {in} {range} 1 {to} 10 {times}
                    {print} This is the table of multiplications for factor
                    {print} number ' x ' factor ' = ' i * factor
            debug: 'True'
        5:
            header: Let's start programming!
            text: Enjoy the adventures in level 11!
    12:
        1:
            header: Welcome to level 12
            text: |-
                From this level on you are allowed to use decimal numbers and there are some changes to the quotation marks.
                You can also use functions from this level on!
        2:
            header: Quotation marks
            text: |-
                This level makes some changes to the usage of quotation marks.
                From now on, **all texts** need to be in quotation marks. This includes values of variables, items on lists and text after {if} commands.
            code: |-
                name = 'Hedy the Robot'
                {print} 'Hello ' name
        3:
            header: Decimal numbers
            text: |-
                From this level on you are also allowed to use decimal numbers. This can make programs like your restaurant even better!

                Numbers do not need quotation marks.
            code: |-
                {print} 'decimal numbers now need to use a dot'
                {print} 2.5 + 2.5
        4:
            header: Functions!
            text: |-
                In this level you'll learn how to use functions. A function is a block of code you can easily use multiple times. Using functions helps us organize pieces of code that we can use again and again. To create a function, use define and give the function a name. Then put all the lines you want in the function in a indented block under the define line. Leave one empty line in your code to make it look nice and neat. Great job! You have created a function!

                Now, whenever we need that block of code, we just use call with the function's name to call it up! We don't have to type that block of code again.
        5:
            header: Twinkle Twinkle little star!
            text: |-
                In this program you see an example of a function.
                Let's see what happens if you fill in the rest of the song!
            code: |-
                {define} twinkle
                     {print} 'Twinkle'
                     {print} '...'

                {call} twinkle
                {print} 'Up above the world so high'
                {print} 'Like a diamond in the sky'
                {call} twinkle
        6:
            header: Functions
            text: As you could see in the example a function is a block of code that can be called anytime. You use `{define}` to set the function and `{call}` to use it.
        7:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {call} new_member
                {print} 'Hi new member!'
                username = {ask} 'What is your username?'
                password = 'What is your password?'
                {print} 'Welcome to our club!'

                username = {ask} 'Please enter your username. Are you a new member? Type New Member'
                {if} username = New Member
                {call} new member
                    {else}
                        password = {ask} 'Please enter password'
            debug: 'True'
        8:
            header: Ready to try it out?
            text: Enjoy the adventures in level 12!
    13:
        1:
            header: Welcome to level 13
            text: |-
                We are now going to learn `{and}` and `{or}`! If you want to check two statements, you don't have to use two ifs but can use and and or.
                From now on you could also use arguments in your functions.
        2:
            header: The and command
            text: |-
                The `{and}` command is always used in a combination with the {if} command.
                This way you can check if 2 statements are true. For example:
            code: |-
                name = {ask} 'what is your name?'
                age = {ask} 'what is your age?'
                {if} name {is} 'Hedy' {and} age {is} 2
                    {print} 'You are the real Hedy!'
        3:
            header: The or command
            text: |-
                The `{or}` works in the same way as the `{and}` command, but only 1 of the two statements has to be true.

                Let's see what happens when you change the `{and}` for `{or}`.
            code: |-
                name = {ask} 'what is your name?'
                {if} name {is} 'Hedy' {or} name {is} 'hedy'
                    {print} 'Welcome!!'
        4:
            header: Functions with arguments
            text: Now that you've learned how to use functions, you'll learn how to use a function with an **argument**. An argument is a variable that is used within a function. It is not used outside the function.
        5:
            header: Example
            text: |-
                In this example you see how the argument 'place' is used in the function.
                Run the code and change 'ocean' and 'sea' to something else, and see what happens.
            code: |-
                {define} song {with} place
                    {print} 'My Bonnie is over the ' place

                {call} song {with} 'ocean'
                {call} song {with} 'sea'
                {call} song {with} 'ocean'
        6:
            header: Example with variable
            text: |-
                You can also combine functions with a question.

                What happens if you make these changes:
                ```
                define song with place
                    print 'My Bonnie is ' place

                answer is ask 'Where is my Bonnie?'
                call song with answer
                ```
            code: |-
                {define} song {with} place
                    {print} 'My Bonnie is over the ' place

                {call} song {with} 'ocean'
                {call} song {with} 'sea'
                {call} song {with} 'ocean'
        7:
            header: Even more questions!
            text: |-
                Now we have combined even more question with the function. Type this code and see what happens.

                Note how the variables and the arguments have the same name. This is allowed.
                Does it confuse you? Just use different names, that is allowed as well.
                ```
                define song with name, place
                    print 'My ' name ' is ' place

                name is ask 'Who?'
                place is ask 'Where are they?'
                call song with name, place
                ```
            code: |-
                {define} song {with} place
                    {print} 'My Bonnie is over the ' place

                {call} song {with} 'ocean'
                {call} song {with} 'sea'
                {call} song {with} 'ocean'
        8:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {define} happiness {with} name
                    {print} '🥳'
                {play} G
                {play} A
                {play} B
                {print} 'Party on, ' name
                {define} sadness
                {print} '😞'
                {play} E
                {play} D
                {play} C
                {print} 'Hope you feel better, ' name

                name = {ask} 'What is your' name '?'
                mood = {ask} 'Are you happy or sad?'
                {if} mood = happy
                    {call} happiness {with} person
                {else} mood = sad
                    {define} sadness {to} name
            debug: 'True'
        9:
            header: Let's go!
            text: Enjoy the adventures in level 13!
    14:
        1:
            header: Welcome to level 14
            text: In this level you'll learn some new symbols that can help you improve your programs, like >. You will also learn to work with return values of a function.
        2:
            header: Symbols
            text: |-
                These are the new symbols you can use:

                  The >  means bigger than...

                  The >= means bigger than or the same as...

                  The <  means smaller than...

                  The <= means smaller than or the same as...

                You can use them like this:
            code: |-
                age = {ask} 'How old are you?'
                {if} age < 13
                    {print} 'You are younger than me!'
                {else}
                    {print} 'You are older than me!'
        3:
            header: Symbols
            text: |-
                You can also use:

                == is the same as.

                != is not

                == is used in `{if}` statements.
            code: |-
                answer = {ask} 'Do you want to learn more?'
                {if} answer == 'yes'
                    {print} 'Go to the next adventure!'
                {if} answer != 'yes'
                    {print} 'That is a shame!'
        4:
            header: Return value
            text: In the previous levels you have learned to create functions and use arguments with them. Another great use of a function is to let it calculate something for you. You can give the function a calculation and it will give you the answer of the calculation. This answer is called a **return value**.
        5:
            header: Return value
            text: For example, in this code the function calculate_new_price will calculate the new price of any item. It will give you the new price as a return value.
            code: |-
                {define} calculate_new_price {with} amount, percentage
                    percentage = percentage / 100
                    discount_amount = amount * percentage
                    {return} amount - discount_amount

                old_price = {ask} 'How much is on the price tag?'
                discount = {ask} 'What percentage is the discount?'

                new_price = {call} calculate_new_price {with} old_price, discount
                {print} 'The new price is ' new_price ' dollar'
        6:
            header: Debugging
            text: Let's debug this code!
            code: |-
                item = 'not bought'
                {print} 'I would like to buy this item'
                price == {ask} 'What is the price?'
                {if} price less than or the same as 10
                    {print} 'Thats a great deal!'
                    item = 'bought'
                {if} price is more than 10 {and} less than or the same as 20
                    {print} 'Alright'
                    item = 'bought'
                {if} price is more than 20 {and} less than 50
                    {print} 'That is a bit much!'
                {if} price is more than or the same as 50
                    {print} 'No way!'
                {if} item =! bought
                    {print} 'Shame.. I wont buy it'
                {else}
                    {print} 'I will buy it! Thank you!'
            debug: 'True'
        7:
            header: Let's get to work!
            text: Enjoy the adventures in level 14!
    15:
        1:
            header: Welcome to level 15
            text: In this level you will learn about the `{while}` loop.
        2:
            header: '{while}'
            text: |-
                We are going to learn a new loop, the while loop! The loop continues as long as the statement is true. So don't forget to change the value in the loop.

                In the example code, we continue until a correct answer has been given. If the correct answer is never given, the loop will never end!
            code: |-
                answer = 0
                {while} answer != 25
                    answer = {ask} 'What is 5 times 5?'
                {print} 'A correct answer has been given'
        3:
            header: Debugging
            text: Let's debug this code!
            code: |-
                numbers = 1, 2

                {for} i {in} {range} 3 {to} 50
                    {add} x {to} numbers
                    i = + 1

                random_number = numbers {random}
                guesses = 10

                {while} guess = 0
                    answer = 'Guess my number:'
                    {if} answer >= random_number
                        {print} 'lower'
                        guesses = guesses -1
                    {if} answer > random_number
                        {print} 'higher!'
                        guesses = guesses
                    {else} answer = random_number
                        {print} 'correct'
                        guesses = 10

            debug: 'True'
        4:
            header: Let's try it out!
            text: Enjoy the adventures in level 15!
    16:
        1:
            header: Welcome to level 16
            text: In this level you will learn about the [square brackets] and how to use them.
        2:
            header: Square brackets
            text: We are going to make lists the Python way, with square brackets around the lists! We also keep the quotation marks around each item like we have learned in previous levels. We use square brackets to point out a place in a list. The at random command can not be used anymore.
            code: |-
                friends = ['Ahmed', 'Ben', 'Cayden']
                {print} friends[1] ' is the first friend on the list.'
                {print} friends[2] ' is the second friend on the list.'
                {print} friends[3] ' is the third friend on the list.'
                #now we will match 2 lists using the variable i
                lucky_numbers = [15, 18, 6]
                {for} i {in} {range} 1 {to} 3
                    {print} friends[i] 's lucky number is ' lucky_numbers[i]
        3:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {print} 'Friendship test'
                {subjects} = ['song', 'movie', 'food', 'drink']
                answers_player_1 = []
                answers_player_2 = []
                score = 100

                {for} i {in} {range} 1 {to} 4
                    answer = {ask} 'what is your favorite ' subjects[i]
                {add} answer {to} answers_player_1

                {print} 'Player 2, your turn!'
                {for} i {in} {range} 0 {to} 4
                    answer_player_2 = {ask} 'what is player 1s favorite ' subjects
                    {add} answer_player_2 {in} answers_player_2
                    {if} answers_player_2[2] == answers_player_1[1]
                        {print} 'Correct!'
                    {else}
                        {print} 'Wrong!'
                    score = score - 25

                {print} 'Player 2, you've scored ' score '%'

                {if} score = 100
                    {print} 'You are an amazing friend'
                {if} score < 100 {or} score >= 50
                    {print} 'You could do better'
                {else} score < 50
                    {print} 'Do you even know this person?!'
            debug: 'True'
        4:
            text: Enjoy the adventures in level 16!
            header: Let's try it out!
    17:
        1:
            header: Welcome to level 17
            text: in this level you will learn how to use a colon and you will learn the elif command.
        2:
            header: Colon
            text: 'Now we are going to change indentation a little bit. Every time that we need an indentation, we need : at the line before the indentation.'
            code: |-
                prices = ['1 million dollars', 'an apple pie', 'nothing']
                your_price = prices[{random}]
                {print} 'You win ' your_price
                {if} your_price == '1 million dollars' :
                    {print} 'Yeah! You are rich!'
                {else}:
                    {print} 'Better luck next time..'
        3:
            header: Elif
            text: 'In this level you can also use a new command: elif. elif is short for else if and you need it when you want to make 3 (or more!) options. Check it out!'
            code: |-
                prices = ['1 million dollars', 'an apple pie', 'nothing']
                your_price = prices[{random}]
                {print} 'You win ' your_price
                {if} your_price == '1 million dollars' :
                    {print} 'Yeah! You are rich!'
                {elif} your_price == 'an apple pie' :
                    {print} 'Lovely, an apple pie!'
                {else}:
                    {print} 'Better luck next time..'
        4:
            header: Debugging
            text: Let's debug this code!
            code: |-
                {define} ask_direction
                    direction = {ask} 'Where do you want to go?'
                    {if} direction = 'backwards'
                        {turn} 180
                    {else} direction == 'right'
                        {turn} 90
                    {else} direction == 'left'
                        {turn} 270
                        {forward} 100

                continue = 'yes'

                {while} continue == 'yes'
                    {print} ask_direction
                    {sleep}
                    continue = 'do you want to draw some more?'
                    {sleep}
            debug: 'True'
        5:
            header: Let's try it out!
            text: Enjoy the adventures in level 17!
    18:
        1:
            header: Welcome to level 18
            text: Congratulations! You have reached the last level of Hedy! The code you have created here can be copied to real Python environments like replit or PyCharm, and you can continue learning there! Note however that Python can only read English commands, so if you have been using other languages, you will need to switch to English now.
        2:
            header: The Python way
            text: |-
                We arrived at real Python code! That means we need to use parentheses with print and range from now on.

                Also, if you want to print more than one item, you need to separate them by commas.

                The final change we will need to make to get Python code is changing ask into input.

                Click on the 'print' tab for all the examples.
            editor: /hedy/18
        3:
            header: The very last adventures!
            text: Enjoy the very last adventures in level 18!