In this video, you'll add a sprite
that bounces around the screen,
and makes a special offer to the audience
watching your commercial when the user clicks on it.
First, add any sprite to your project.
To make the sprite bounce all over the screen,
add a go to block,
and two pick random operator blocks
with the height and width dimensions of the stage
as the x and y values.
Try that out.
Each time the block is clicked
the sprite hops from one spot to another on the screen.
Add repeat and wait blocks
to make the sprite jump around the stage many times,
pausing between each jump
to give the user a chance to click it.
Tinker with the values in the repeat and wait blocks
until you like the way the sprite moves.
The higher the number in the repeat loop,
the more times the sprite will move around the screen.
The higher the number in the wait loop,
the longer the sprite will pause in one place.
Higher numbers will make it easier for your audience
to click on the sprite.
Lower numbers can make the sprite hard to catch.
Remember to try your code often.
Drag out a say for two seconds block,
and enter the instructions the sprite should say
when it first appears on the screen.
This example says,
catch me for a free gift!
But you can enter any text you like.
If the sprite stays in one place
while it gives the instructions,
it'll be very easy for an audience member to click on it.
Instead, the sprite should move
around the screen at the same time
as it says the instructions.
Test this out by clicking on the save block,
then quickly clicking on the repeat loop.
To make both the say and the go to actions happen
at the same time, drag out a when I receive event.
Click the drop-down arrow, choose new message,
and add a message name you like.
This example calls the message
Snap this receive block above the repeat loop.
Drag out another when I receive block.
Place it above the say block,
and choose your message name from the drop-down.
Both stacks of code are now waiting
to receive the same queue or event.
That tells them it's time to act in the commercial.
To test the code,
drag a broadcast block into the script area,
and choose the message you just added
from the drop-down list.
Test your code by clicking the broadcast block.
In this example, the event name
is broadcasted to all the sprites in the project.
The penguin is waiting to receive the event.
It immediately starts running all the code
under any when I receive catch me blocks.
The penguin simultaneously runs the say blocks
and bounces around the screen.
That looks great.
Next, add code for what happens
if the user successfully clicks on the sprite.
Add a when sprite clicked event,
and a save block to reveal what the user won.
Test the code by clicking the broadcast block again,
then the sprite, if you can catch it.
To make the sprite stop moving when clicked,
and also, to hide it before and after the event is called,
add a stop other scripts and sprite block,
and some show and hide blocks.
Try the code by clicking the broadcast block.
The sprite gives them instructions, moves around the screen,
and reacts when clicked.
However, the most important step is still left
for you to do.
If you don't add the broadcast block to the code
you already built in another sprite,
then none of this new code
will ever run during the actual commercial.
This example will add the broadcast block
to the Scratch Cat,
but you should add it where you like for your project.
If you drag the broadcast block
under the when flag clicked event,
and set the broadcast block to the catch me event,
for example, the penguin will display
at the very beginning of the commercial.
You can even use the event more than once.
Adding in a catch me event near the end of the code
will make the penguin reappear and say the instructions
a second time.
Remember, your code will look different
than the example you see here,
but it's important that you add your new broadcast event
somewhere in your other sprite's code.
Otherwise, the new code you created will never run,
and your users will never have a chance
to catch your sprite.
Now it's your turn.
Add a new sprite, code the sprite to give instructions,
move around the stage,
and react when the user clicks on it.
Remember to add the broadcast block
to another block stack,
so that your new code is run during your commercial.
And the broadcast block also needs a matching
when I receive broadcast block to run.
Make your company name or message memorable with a special effect.
Create a moving sprite for the audience to click on.
Add a button for buying your product.
Ask your audience a question, and program a response.
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