Hello world! I'm talking about creating scene procedures

in Alice 3.

I have the first program we wrote which is

to have someone say hello world.

And I have a comment.

That says

Who the programmer is.

And also a brief description of  what program does.

And I have just this one statement.

That the witch says hello world.

If we keep adding, and adding, and adding to this and create one big program,

it becomes.

unwieldy.

So instead of putting code in myFirstMethod.

What we're going to do is create scene procedures.

And I click on this.

And pick Scene.

And add a Scene Procedure.

Not a function: a procedure.

I'm going to name this introduction.

Now I'm going to go back to myFirstMethod.

And right click

on that statement where the witch says hello world.

Copy it to the clipboard.

Now I'm going to go to my introduction procedure

And drag the clipboard in.

That statement now is in a procedure called Introduction. It's also here

in myFirstMethod but I'm going to drag it

over here and delete it.

And then I have

in the Procedure tab.

I have this

Procedure

called Introduction.

I'm going to drag it up here.

And drop it.

Where it just says intoduction and then it has these parentheses, that's a call to

This procedure right here.

Add a comment.

I'm going to add a comment.

And say,

Witch introduces herself.

When I run this it starts with myFirstMethod

And myFirstMethod calls Introduction,

and executes any of the code there.

I could also have the witch say another thing here.

And my name is.

Greta.

And I run it.

And it'll execute all of the code that's in Introduction.

And this helps to keep.

our myFirstMessage

Procedure nice and neat it's like a master list of what we want to have happen in this.

program.

I'm going to do that again.

And pick Scene.

Add Scene Procedure.

Call this Conclusion.

Inside Collusion.

I'm going to have to witch say

Goodbye

All right.

Let's go back, and we should put a comment in here also.

I said the witch says goodbye and leaves, but I haven't actually done that. There's a nice simple way of doing that.

We can

scroll down here to appearance.

And have the witch's

opacity set to zero.

Run this again.

She says hello.

My name is Greta.

She didn't say goodbye!

That's because I didn't call that here. So let's go back to this.

And.

Drag Conclusion in.

And run it.

She says Hello world my name is Greta.

Goodbye.

And she disappears.

And my first method has nothing but

Calls

And later if I want to do more maybe she asks you what your name is...

And we can add that into introduction and that's it.