Treasure Hunt II — Scratch L2 Lesson 14

Learnt28 min · and, ranges, equals, holes, losing
Basic24 min · five digs to find it
Challenge 1–327 min · four words, the sand, a hole map
Extrabonus · warmer or colder

WHAT IT SHOULD LOOK LIKE

Five digs to find it. Every miss leaves a hole. Run out, and the desert shows you where the chest was.

three misses

out of digs

faded sprite = where it ends up · panels run left to right

Review — where we got to 5 min

(distance to [Treasure v]) works even when the chest is hidden.
<() < ()> and <() > ()> ask a question. The answer is true or false.
The chain asks “under 60?” first, then “under 150?”.

Quick-fire

The chest is 100 steps away. Which word does the chain say?

Reveal the answer

Warm. “Under 60?” says no, so the else runs. Then “under 150?” says yes.

The Warm question is only asked because the Hot! one said no. Remember that.

Today’s Topic 3 min

<<> and <>> — two questions that must both say yes
A range: Warm is “more than 60 and less than 150”
<() = ()> — exactly the same
Five digs, and a hole for every dig
The first way to lose

Learning outcome

By the end of this lesson you will be able to:

Join two questions with and.
Check if a number is inside a range.
Count down to zero and end the game there.

Learnt — a range, and a limit 28 min

1 · Warm only works in the chain

Last lesson, Warm was asked second. Try asking it alone, in its own if / then:


if <(distance to [Treasure v]) < (150)> then
  say [Warm]
end

On its own, this is true at 40 steps too.

WHAT IT SHOULD LOOK LIKE

Take the Warm check out of the chain and it goes wrong. 40 steps is under 150 too — so it says Warm right on top of the chest.

40 steps, Warm check alone

Warm is not “under 150”. Warm is more than 60, and under 150. That is two questions, and both must say yes.

2 · and: both must say yes

<<> and <>> is a green Operators block. It has two pointy slots.

Left question	Right question	`and` says
yes	yes	yes
yes	no	no
no	yes	no
no	no	no

Open Operators. Drag out <<> and <>>.
Drop <() > (50)> into the left slot. Type 60.
Drop <() < (50)> into the right slot. Type 150.
Put (distance to [Treasure v]) in both empty ends.


<<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>>

A range. True only between 60 and 150.

WHAT IT SHOULD LOOK LIKE

Warm is a range: more than 60 AND less than 150. Both have to be true, so the ring right by the chest is left out.

the Warm ring

100 steps · both true

panels run left to right

3 · Three ifs, any order

Now each word has its own full question. They do not need the chain any more. Three plain if / then blocks will do.


when flag clicked
forever
  go to [mouse-pointer v]
  if <(distance to [Treasure v]) < (60)> then
    say [Hot!]
  end
  if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>> then
    say [Warm]
  end
  if <(distance to [Treasure v]) > (150)> then
    say [Cold]
  end
end

Only one of the three can be true at a time.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse towards the chest and away again. Watch the detector say Hot!, Warm or Cold. Nothing else to press.

The same three words as last lesson, built a new way. The chest is in view.

4 · Five digs, and exactly zero

Make a variable called digs left. Set it to 5 at the flag. Every dig takes one away.

When is the game over? When digs left is exactly 0. That is the third compare block, <() = ()>.


change [digs left v] by (-1)

One dig used.


if <(digs left) = (0)> then
  broadcast [lost v]
end

None left? Tell everyone.

One click, one dig. <mouse down?> is true the whole time the button is held. Without a pause, one click digs ten times! Add wait until <not <mouse down?>> after each dig. You used this in the Car Race menu.

5 · A hole for every dig

A dig should leave a mark. Each hole is a clone, like the zombies were.

Paint a sprite called Hole: a dark oval.
Give it when flag clicked and hide. The original is never seen.
Add when I start as a clone, go to [Detector v], show.
On the Detector, a dig does create clone of [Hole v].

WHAT IT SHOULD LOOK LIKE

Every press of the mouse button takes one dig away and leaves a hole where the detector is.

first dig

fifth dig

panels run left to right


when flag clicked
set [digs left v] to (5)
forever
  if <mouse down?> then
    change [digs left v] by (-1)
    create clone of [Hole v]
    if <(digs left) = (0)> then
      broadcast [lost v]
    end
    wait until <not <mouse down?>>
  end
end

The Detector’s dig, in its own script. A second script does the following.


when flag clicked
hide

when I start as a clone
go to [Detector v]
show

The Hole. Each clone lands where the Detector is.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button five times in different places. Each press digs a hole and takes one dig away.

No chest in this one. Five clicks, five holes, and then it is over.

6 · Win, or lose

Put it together. A dig now asks one question first:

Is it Hot!? Then broadcast [found v], like last lesson.
If not, use up a dig and leave a hole.

When the digs reach 0, broadcast [lost v]. Two sprites listen:


when I receive [lost v]
stop [other scripts in sprite v]
say [Out of digs!]

The Detector stops.


when I receive [lost v]
show

The Treasure shows where it was.

Basic — five digs to find it 24 min

Open your hunt from last lesson. Change one thing at a time, and play after each.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. You have five digs; a dig when it says Hot! finds the chest.

What you are aiming at. Five digs. Find it, or see where it was.

Step 1 — three ifs instead of a chain

Pull the whole chain out of the forever loop.
Build three if / then blocks: Hot!, Warm, Cold.
Warm gets the <<> and <>> range.
Play with the chest showing. Check all three words.

Step 2 — the variable

Make a variable digs left, for all sprites. Tick it so it shows.

Step 3 — the dig script

Start a second script on the Detector: when flag clicked, set [digs left v] to (5), forever.
Inside: an if / then with <mouse down?>.
Inside that: an if / else. Hot! means broadcast [found v].
Else: change [digs left v] by (-1).
After the if / else, add wait until <not <mouse down?>>.
Delete the old mouse-down check from the first script.

Step 4 — the holes

Paint the Hole sprite and give it its two stacks.
In the else, add create clone of [Hole v].
Play. Every miss leaves a hole.

Step 5 — losing

After the clone, add an if / then asking <(digs left) = (0)>. Put broadcast [lost v] inside.
Give the Detector and the Treasure their “lost” scripts.
Lose on purpose. Five misses, then the chest appears.

The whole Detector


when flag clicked
forever
  go to [mouse-pointer v]
  if <(distance to [Treasure v]) < (60)> then
    say [Hot!]
  end
  if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>> then
    say [Warm]
  end
  if <(distance to [Treasure v]) > (150)> then
    say [Cold]
  end
end

when flag clicked
set [digs left v] to (5)
forever
  if <mouse down?> then
    if <(distance to [Treasure v]) < (60)> then
      broadcast [found v]
    else
      change [digs left v] by (-1)
      create clone of [Hole v]
      if <(digs left) = (0)> then
        broadcast [lost v]
      end
    end
    wait until <not <mouse down?>>
  end
end

when I receive [found v]
stop [other scripts in sprite v]
say [You found it!]

when I receive [lost v]
stop [other scripts in sprite v]
say [Out of digs!]

Four scripts. The Treasure keeps last lesson’s two, plus when I receive [lost v] and show.

One click uses up all five digs.

The wait until <not <mouse down?>> is missing, or it is inside the else. It must sit after the if / else, so it runs for every dig.

It says Cold right next to the chest.

Look at the Warm range. One of the two signs is the wrong way round. It should be “more than 60” and “less than 150”.

The holes appear in the middle of the Stage.

The clone script says go to [random position v] or is missing its go to. Pick Detector in the dropdown.

I lose at the very start of the game.

set [digs left v] to (5) is missing, so the count starts at 0.

CHALLENGE 1 · L2-14-M1🪙 30 Adcoins8 min

Very warm

Split Warm into two words.

60 to 100 steps says Very warm.
100 to 150 steps says Warm.
Hot! and Cold do not change.
The four ifs still work in any order.

WHAT IT SHOULD LOOK LIKE

Challenge 1 — four words, and two of them are ranges.

80 steps

120 steps

panels run left to right

Done when: you shuffle your four ifs into a new order and every word still comes out in the right place.

Teacher reveal — two ranges


if <(distance to [Treasure v]) < (60)> then
  say [Hot!]
end
if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (100)>> then
  say [Very warm]
end
if <<(distance to [Treasure v]) > (100)> and <(distance to [Treasure v]) < (150)>> then
  say [Warm]
end
if <(distance to [Treasure v]) > (150)> then
  say [Cold]
end

The shuffle test is the point. A pupil who kept the old chain will find their words break when reordered. That is the lesson landing.

CHALLENGE 2 · L2-14-M2🪙 50 Adcoins9 min

Only on the sand

Hide the chest a new way, with go to [random position v]. That block can land anywhere — even in the sky.

The chest must always land on the sand.
The sand is between y = -150 and y = -40.
If it lands in the wrong place, it tries again, until it gets it right.

WHAT IT SHOULD LOOK LIKE

Challenge 2 — wherever it lands, it lands on the sand.

never here

faded sprite = where it ends up

Runs here in the page. Nothing to install.

How to use this: Click the green flag to start it. Nothing else to press — watch the chest land on the sand again and again.

The chest lands, shows for a second, and lands again. It never lands in the sky.

Done when: you press the flag twenty times and the chest never once lands in the sky.

Teacher reveal — a range on y

What your pupil builds, on the Treasure:


when flag clicked
hide
switch costume to [chest v]
go to [random position v]
repeat until <<(y position) > (-150)> and <(y position) < (-40)>>
  go to [random position v]
end

What the embed above runs — the same search in a loop, so you can watch it land again and again:


when flag clicked
switch costume to [chest v]
forever
  hide
  go to [random position v]
  repeat until <<(y position) > (-150)> and <(y position) < (-40)>>
    go to [random position v]
  end
  show
  wait (1) seconds
end

The same and as Warm, on a different number. A range is a range. Ask why the chest must hide while it searches: otherwise the misses flash across the sky.

CHALLENGE 3 · L2-14-M3🪙 70 Adcoins10 min

A map of your digs

Five digs is not many. Make every miss tell you something.

A hole dug somewhere Warm gets an orange rim.
A hole dug somewhere Cold gets a blue rim.
The rims stay, so the holes become a map.

WHAT IT SHOULD LOOK LIKE

Challenge 3 — a map of your digs. Warm holes glow orange. Cold holes go blue.

after four misses

faded sprite = where it ends up

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. Each hole comes out orange or blue. Five digs to find the chest.

Dig a few misses on purpose. Orange holes point the way; blue ones say go elsewhere.

Done when: you find the chest by reading the colours of your holes, not the words.

Teacher reveal — the hole asks for itself


when I start as a clone
go to [Detector v]
if <(distance to [Treasure v]) < (150)> then
  switch costume to [warm v]
else
  switch costume to [cold v]
end
show

The Hole gets two more costumes, warm and cold. The clone measures its own distance to the chest. Nobody has to tell it — which is the idea worth naming.

Only Warm and Cold are needed. A Hot! dig finds the chest, so it never makes a hole.

EXTRA MISSION · L2-14-MX🪙 100 Adcoinsbonus

Warmer or colder?

Real treasure hunters compare. Is this dig closer than the last one?

Each new hole says Warmer! or Colder! for two seconds.
Warmer! means closer than the last hole.
The first hole of a game always says Warmer!.

WHAT IT SHOULD LOOK LIKE

Extra Mission — each new hole says if it was closer than the last one.

second dig

third dig

faded sprite = where it ends up · panels run left to right

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. Each new hole says Warmer! or Colder!.

Each new hole compares itself with the one before.

Teacher reveal — last dig


when flag clicked
hide
set [last dig v] to (999)

when I start as a clone
go to [Detector v]
show
if <(distance to [Treasure v]) < (last dig)> then
  set [last dig v] to (distance to [Treasure v])
  say [Warmer!] for (2) seconds
else
  set [last dig v] to (distance to [Treasure v])
  say [Colder!] for (2) seconds
end

999 is bigger than any distance on the Stage. So the first dig is always closer. Why is the set before the say? A quick second dig would otherwise compare against the wrong number.

Summary 5 min

<<> and <>> is yes only when both sides say yes.
A range is two compares joined by and: more than one number, less than another.
With full questions, three ifs work in any order. A chain does not.
<() = ()> asks if two things are exactly the same.
A clone that goes to the Detector marks where you dug.

and: Joins two questions. Both must be true.
Range: Everything between a low number and a high one.
Equals: Exactly the same number, no more and no less.
Lose condition: The rule that ends the game badly — here, no digs left.

Hand in

Save your hunt. Next lesson, snakes arrive — and the detector starts to beep.

Learnt28 min · and, ranges, equals, holes, losing
Basic24 min · five digs to find it
Challenge 1–327 min · four words, the sand, a hole map
Extrabonus · warmer or colder

WHAT IT SHOULD LOOK LIKE

Five digs to find it. Every miss leaves a hole. Run out, and the desert shows you where the chest was.

three misses

out of digs

faded sprite = where it ends up · panels run left to right

Review — where we got to 5 min

(distance to [Treasure v]) works even when the chest is hidden.
<() < ()> and <() > ()> ask a question. The answer is true or false.
The chain asks “under 60?” first, then “under 150?”.

Quick-fire

The chest is 100 steps away. Which word does the chain say?

Reveal the answer

Warm. “Under 60?” says no, so the else runs. Then “under 150?” says yes.

The Warm question is only asked because the Hot! one said no. Remember that.

Today’s Topic 3 min

<<> and <>> — two questions that must both say yes
A range: Warm is “more than 60 and less than 150”
<() = ()> — exactly the same
Five digs, and a hole for every dig
The first way to lose

Learning outcome

By the end of this lesson you will be able to:

Join two questions with and.
Check if a number is inside a range.
Count down to zero and end the game there.

Learnt — a range, and a limit 28 min

1 · Warm only works in the chain

Last lesson, Warm was asked second. Try asking it alone, in its own if / then:


if <(distance to [Treasure v]) < (150)> then
  say [Warm]
end

On its own, this is true at 40 steps too.

WHAT IT SHOULD LOOK LIKE

Take the Warm check out of the chain and it goes wrong. 40 steps is under 150 too — so it says Warm right on top of the chest.

40 steps, Warm check alone

Warm is not “under 150”. Warm is more than 60, and under 150. That is two questions, and both must say yes.

2 · and: both must say yes

<<> and <>> is a green Operators block. It has two pointy slots.

Left question	Right question	`and` says
yes	yes	yes
yes	no	no
no	yes	no
no	no	no

Open Operators. Drag out <<> and <>>.
Drop <() > (50)> into the left slot. Type 60.
Drop <() < (50)> into the right slot. Type 150.
Put (distance to [Treasure v]) in both empty ends.


<<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>>

A range. True only between 60 and 150.

WHAT IT SHOULD LOOK LIKE

Warm is a range: more than 60 AND less than 150. Both have to be true, so the ring right by the chest is left out.

the Warm ring

100 steps · both true

panels run left to right

3 · Three ifs, any order

Now each word has its own full question. They do not need the chain any more. Three plain if / then blocks will do.


when flag clicked
forever
  go to [mouse-pointer v]
  if <(distance to [Treasure v]) < (60)> then
    say [Hot!]
  end
  if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>> then
    say [Warm]
  end
  if <(distance to [Treasure v]) > (150)> then
    say [Cold]
  end
end

Only one of the three can be true at a time.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse towards the chest and away again. Watch the detector say Hot!, Warm or Cold. Nothing else to press.

The same three words as last lesson, built a new way. The chest is in view.

4 · Five digs, and exactly zero

Make a variable called digs left. Set it to 5 at the flag. Every dig takes one away.

When is the game over? When digs left is exactly 0. That is the third compare block, <() = ()>.


change [digs left v] by (-1)

One dig used.


if <(digs left) = (0)> then
  broadcast [lost v]
end

None left? Tell everyone.

5 · A hole for every dig

A dig should leave a mark. Each hole is a clone, like the zombies were.

Paint a sprite called Hole: a dark oval.
Give it when flag clicked and hide. The original is never seen.
Add when I start as a clone, go to [Detector v], show.
On the Detector, a dig does create clone of [Hole v].

WHAT IT SHOULD LOOK LIKE

Every press of the mouse button takes one dig away and leaves a hole where the detector is.

first dig

fifth dig

panels run left to right


when flag clicked
set [digs left v] to (5)
forever
  if <mouse down?> then
    change [digs left v] by (-1)
    create clone of [Hole v]
    if <(digs left) = (0)> then
      broadcast [lost v]
    end
    wait until <not <mouse down?>>
  end
end

The Detector’s dig, in its own script. A second script does the following.


when flag clicked
hide

when I start as a clone
go to [Detector v]
show

The Hole. Each clone lands where the Detector is.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button five times in different places. Each press digs a hole and takes one dig away.

No chest in this one. Five clicks, five holes, and then it is over.

6 · Win, or lose

Put it together. A dig now asks one question first:

Is it Hot!? Then broadcast [found v], like last lesson.
If not, use up a dig and leave a hole.

When the digs reach 0, broadcast [lost v]. Two sprites listen:


when I receive [lost v]
stop [other scripts in sprite v]
say [Out of digs!]

The Detector stops.


when I receive [lost v]
show

The Treasure shows where it was.

Basic — five digs to find it 24 min

Open your hunt from last lesson. Change one thing at a time, and play after each.

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. You have five digs; a dig when it says Hot! finds the chest.

What you are aiming at. Five digs. Find it, or see where it was.

Step 1 — three ifs instead of a chain

Pull the whole chain out of the forever loop.
Build three if / then blocks: Hot!, Warm, Cold.
Warm gets the <<> and <>> range.
Play with the chest showing. Check all three words.

Step 2 — the variable

Make a variable digs left, for all sprites. Tick it so it shows.

Step 3 — the dig script

Start a second script on the Detector: when flag clicked, set [digs left v] to (5), forever.
Inside: an if / then with <mouse down?>.
Inside that: an if / else. Hot! means broadcast [found v].
Else: change [digs left v] by (-1).
After the if / else, add wait until <not <mouse down?>>.
Delete the old mouse-down check from the first script.

Step 4 — the holes

Paint the Hole sprite and give it its two stacks.
In the else, add create clone of [Hole v].
Play. Every miss leaves a hole.

Step 5 — losing

After the clone, add an if / then asking <(digs left) = (0)>. Put broadcast [lost v] inside.
Give the Detector and the Treasure their “lost” scripts.
Lose on purpose. Five misses, then the chest appears.

The whole Detector


when flag clicked
forever
  go to [mouse-pointer v]
  if <(distance to [Treasure v]) < (60)> then
    say [Hot!]
  end
  if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (150)>> then
    say [Warm]
  end
  if <(distance to [Treasure v]) > (150)> then
    say [Cold]
  end
end

when flag clicked
set [digs left v] to (5)
forever
  if <mouse down?> then
    if <(distance to [Treasure v]) < (60)> then
      broadcast [found v]
    else
      change [digs left v] by (-1)
      create clone of [Hole v]
      if <(digs left) = (0)> then
        broadcast [lost v]
      end
    end
    wait until <not <mouse down?>>
  end
end

when I receive [found v]
stop [other scripts in sprite v]
say [You found it!]

when I receive [lost v]
stop [other scripts in sprite v]
say [Out of digs!]

Four scripts. The Treasure keeps last lesson’s two, plus when I receive [lost v] and show.

One click uses up all five digs.

The wait until <not <mouse down?>> is missing, or it is inside the else. It must sit after the if / else, so it runs for every dig.

It says Cold right next to the chest.

Look at the Warm range. One of the two signs is the wrong way round. It should be “more than 60” and “less than 150”.

The holes appear in the middle of the Stage.

The clone script says go to [random position v] or is missing its go to. Pick Detector in the dropdown.

I lose at the very start of the game.

set [digs left v] to (5) is missing, so the count starts at 0.

CHALLENGE 1 · L2-14-M1🪙 30 Adcoins8 min

Very warm

Split Warm into two words.

60 to 100 steps says Very warm.
100 to 150 steps says Warm.
Hot! and Cold do not change.
The four ifs still work in any order.

WHAT IT SHOULD LOOK LIKE

Challenge 1 — four words, and two of them are ranges.

80 steps

120 steps

panels run left to right

Done when: you shuffle your four ifs into a new order and every word still comes out in the right place.

Teacher reveal — two ranges


if <(distance to [Treasure v]) < (60)> then
  say [Hot!]
end
if <<(distance to [Treasure v]) > (60)> and <(distance to [Treasure v]) < (100)>> then
  say [Very warm]
end
if <<(distance to [Treasure v]) > (100)> and <(distance to [Treasure v]) < (150)>> then
  say [Warm]
end
if <(distance to [Treasure v]) > (150)> then
  say [Cold]
end

The shuffle test is the point. A pupil who kept the old chain will find their words break when reordered. That is the lesson landing.

CHALLENGE 2 · L2-14-M2🪙 50 Adcoins9 min

Only on the sand

Hide the chest a new way, with go to [random position v]. That block can land anywhere — even in the sky.

The chest must always land on the sand.
The sand is between y = -150 and y = -40.
If it lands in the wrong place, it tries again, until it gets it right.

WHAT IT SHOULD LOOK LIKE

Challenge 2 — wherever it lands, it lands on the sand.

never here

faded sprite = where it ends up

Runs here in the page. Nothing to install.

How to use this: Click the green flag to start it. Nothing else to press — watch the chest land on the sand again and again.

The chest lands, shows for a second, and lands again. It never lands in the sky.

Done when: you press the flag twenty times and the chest never once lands in the sky.

Teacher reveal — a range on y

What your pupil builds, on the Treasure:


when flag clicked
hide
switch costume to [chest v]
go to [random position v]
repeat until <<(y position) > (-150)> and <(y position) < (-40)>>
  go to [random position v]
end

What the embed above runs — the same search in a loop, so you can watch it land again and again:


when flag clicked
switch costume to [chest v]
forever
  hide
  go to [random position v]
  repeat until <<(y position) > (-150)> and <(y position) < (-40)>>
    go to [random position v]
  end
  show
  wait (1) seconds
end

The same and as Warm, on a different number. A range is a range. Ask why the chest must hide while it searches: otherwise the misses flash across the sky.

CHALLENGE 3 · L2-14-M3🪙 70 Adcoins10 min

A map of your digs

Five digs is not many. Make every miss tell you something.

A hole dug somewhere Warm gets an orange rim.
A hole dug somewhere Cold gets a blue rim.
The rims stay, so the holes become a map.

WHAT IT SHOULD LOOK LIKE

Challenge 3 — a map of your digs. Warm holes glow orange. Cold holes go blue.

after four misses

faded sprite = where it ends up

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. Each hole comes out orange or blue. Five digs to find the chest.

Dig a few misses on purpose. Orange holes point the way; blue ones say go elsewhere.

Done when: you find the chest by reading the colours of your holes, not the words.

Teacher reveal — the hole asks for itself


when I start as a clone
go to [Detector v]
if <(distance to [Treasure v]) < (150)> then
  switch costume to [warm v]
else
  switch costume to [cold v]
end
show

The Hole gets two more costumes, warm and cold. The clone measures its own distance to the chest. Nobody has to tell it — which is the idea worth naming.

Only Warm and Cold are needed. A Hot! dig finds the chest, so it never makes a hole.

EXTRA MISSION · L2-14-MX🪙 100 Adcoinsbonus

Warmer or colder?

Real treasure hunters compare. Is this dig closer than the last one?

Each new hole says Warmer! or Colder! for two seconds.
Warmer! means closer than the last hole.
The first hole of a game always says Warmer!.

WHAT IT SHOULD LOOK LIKE

Extra Mission — each new hole says if it was closer than the last one.

second dig

third dig

faded sprite = where it ends up · panels run left to right

Runs here in the page. Nothing to install.

How to use this: Click the green flag, then move the mouse over the sand. Press the mouse button to dig. Each new hole says Warmer! or Colder!.

Each new hole compares itself with the one before.

Teacher reveal — last dig


when flag clicked
hide
set [last dig v] to (999)

when I start as a clone
go to [Detector v]
show
if <(distance to [Treasure v]) < (last dig)> then
  set [last dig v] to (distance to [Treasure v])
  say [Warmer!] for (2) seconds
else
  set [last dig v] to (distance to [Treasure v])
  say [Colder!] for (2) seconds
end

999 is bigger than any distance on the Stage. So the first dig is always closer. Why is the set before the say? A quick second dig would otherwise compare against the wrong number.

Summary 5 min

<<> and <>> is yes only when both sides say yes.
A range is two compares joined by and: more than one number, less than another.
With full questions, three ifs work in any order. A chain does not.
<() = ()> asks if two things are exactly the same.
A clone that goes to the Detector marks where you dug.

and: Joins two questions. Both must be true.
Range: Everything between a low number and a high one.
Equals: Exactly the same number, no more and no less.
Lose condition: The rule that ends the game badly — here, no digs left.

Hand in

Save your hunt. Next lesson, snakes arrive — and the detector starts to beep.