ExampleStory.ink

VAR x = 20
VAR y = 20
VAR water = 20

The desert was vast. My steps were erased soon after I placed them, but I had to continue. I knew that with every movement on the map, I would drink water -- and I was quickly running out.
-> Choices

=== Choices ===

{ water < 1: -> Out_Of_Water }

+ [Keep going]
    -> Choices

=== Out_Of_Water ===
I shook my canteen, but could tell it was empty. This... this was the last step in my journey.
-> DONE

=== function goNorth() ===
{ setY(y - 1) }
{ drinkWater() }

=== function goSouth() ===
{ setY(y + 1) }
{ drinkWater() }

=== function goWest() ===
{ setX(x - 1) }
{ drinkWater() }

=== function goEast() ===
{ setX(x + 1) }
{ drinkWater() }

=== function setX(newX) ===
{

    - newX > 100: 
        ~ x = 100
    - newX < 0:
        ~ x = 0
    - else:
        ~ x = newX
}

=== function setY(newY) ===
{ 
    - newY > 100: 
        ~ y = 100
    - newY < 0:
        ~ y = 0
    - else:
        ~ y = newY
}

=== function currentPosition() ===
(Currently at {x} and {y}.)

=== function drinkWater() ===
 ~ water = water - 1

=== function currentWater() ===
(Remaining water {water})