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TUTORIAL 7: ADDING INTERACTIVITY
In the first scripting tutorial, you wrote simple commands
within a script, telling Director
to beep and open an alert window. Often you will use scripting
to add navigation to your
presentation. This gives users control over the flow of the
presentation, allowing them toexplore movies at their own pace,
pause or repeat parts of the movie or exit the
presentation.
Creating Loops
This is the process of continuously returning the playback head
to the same location it
has come from, until the user gives instructions to exit the
loop.
Double click frame 5 of the scripting channel and type the
following script:
on exitFrame**go to frame 1
end
Make sure the looping option in the control panel is turned off,
play the movie and
watch what happens in the score.
Pausing a movie
To pause a movie, simply create a script that loops the playback
head in the current
frame. The script is as follows:
on exitFrame
**go to the frame
end
The go to command sends the playback head to a specific point in
your movie. In the
above script,the frame represents the current frame.
Moving between sequences creating markers
Director allows you to markcertain frames in your movie so they
can be identified by
buttons and links.
1. Open a new movie.
2. We are going to identify 3 points in the movie by placing
various shapes on thestage. Using the Vector Shape tool, create a
square, circle, and some other shapeyou like.
3. Place the square in the score so it extends from frame 10-19,
the circle over
frames 20-29 and the 'other' over frames 30-39.
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4. As in tutorial 11, create 2 push buttons cast members. Place
the casts in thescore and make sure they are extended over frame 1
to frame 39. Label one pushbutton nextand the otherprevious.
5. Place a pause script in frame 10, 20 and 30.
6. Click in the marker channel in frame 10, as soon as you click
a markeriscreated with text naming it as New Marker. Type in
squareover this text.
7. Create markers at frame 20 and 30, naming them circle and
other(or anothername to identify your other shape) respectively.
You can delete a marker by clickingthe triangle and dragging it
below the marker channel.
8. Create a sprite behavior (script) for the nextpush-button you
created, which
reads:
on mouseUp**go to nextendThe go to nextstatement tells Director
to go to the next consecutive marker in thescore.
9. Create a sprite behavior for theprevious button which
reads:on mouseUp
**go to previousend
The go to previous statement tells Director to go to the
previous marker in thescore.
10. Play the movie, click on the buttons and see how they
work.
In the above set of steps you created movement over consecutive
markers. With
Director you can make a button jump to as a specific point. To
do this, do as follows:
1. Create another set of push buttons giving them the same names
as your shapes.
2. For each button, create a cast member script which uses the
statement:go to "markerName"
For example the button for the square will have the following
script:on mouseUp**go to "square"end
3. Play the movie and click on the new set of buttons you
created.
