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In this add on, you'll make the object appear in a random place, each time the user plays the game.

This makes the game less predictable and more fun.

In the core project, the object shows when the game switches to a specific backdrop.

Since the object should in a random backdrop, select the object, detach the when backdrop switches to block and delete it.

Click the state then the Backdrops tab.

There are four different backdrops.

One for the town and one for each of the three locations.

Each of these backdrops has a number.

Open the Looks menu.

Find the backdrop number and click it to see what it does.

This block outputs the current backdrop's number.

Add this block to the object sprite by dragging it on top.

Then, click the object sprite.

Cool!

The backdrop number block appears in the scripts area.

Click Make a Variable.

A variable holds a value.

In this case, this variable will hold a random backdrop number where the object will appear.

Name the variable object location, then click OK.

Set this variable to a random number.

Drag up a set object location block then a place a pick random block from Operators into it.

Type two and four in the values places because backdrops two, three, and four represent the three possible locations where the object can be found.

Test this block by clicking on it a few times.

The value next to object location on the state changes to a random number between two and four each time.

Great!

Place this block above the forever block so the program decides where the object will hide at the start of the game.

Next, build a conditional statement that checks if the current backdrop equals the object location.

Drag out an if block.

Place an equals block inside the condition slot.

Drag the object location block into one slide and the backdrop number block into the other.

If the statement is true, make the object show then detect if the player is touching it.

Put this conditional around the touching character conditional and move the show block into the if statement.

Add a when flag clicked block on top so this code runs when the flag is clicked.

Finally, uncheck the box next to object location.

This hides the variable display on the stage so the player can't see the answer.

This code now reads, when the flag is clicked set the object location to a random number between two and four.

If the current backdrop number is equal to that random number, meaning the character is at that location then the object shows.

Test it out by playing the game more than once.

The object now appears at a random place each time.

Now, it's your turn.

Select the object sprite, and discard the when backdrop switches to block for the touching character conditional.

Drag the backdrop number block from the stage into the object sprite.

Create an object location variable, and set it to a random number at the start of the program.

Build a conditional that checks if the backdrop number equals the object location variable.

If the condition is true, show the object sprite, and turn on the winning condition.

Choose an Add-On

Peek-a-boo

Make the game more challenging by showing the object only if the character is nearby.

Musical Objects

Add some interactive items that make sound when the character walks over them

Obstacle Obstruction

Make the maps more realistic by preventing the character from running into obstacles, like trees or buildings.

Hide and Seek

Hide the object in a random location each time.

Attributions
  • The song “Magic Marker” is © YouTube-- CC-BY-SA 4.0 does not apply.