Flash Script – LED Display

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Download the sample files here.

1. Open a new movie, and give it a width of 200, a height of 150. Set the background color to black.

2. Create a new graphic symbol (let’s call it "gr_square") of a square with a height and width of 8 pixels. Choose a color that can be seen against your black background.

3. Create a movieclip symbol (let’s call it "mv_bar"). Drag 6 instances of gr_square into the movieclip. Align them vertically, so that the upper left corner of each square is separated from the one immediately below it by 10 pixels.

The upper left corner of the topmost square should be at the coordinates x=0, y=0.


4. Create a new movieclip symbol (let’s call it "mv_LEDbar") with 2 layers. Name the upper layer "LED mask" and the lower layer "LED color". now, drag an instance of mv_bar into the upper layer, and position it at x=0, y=50.


5. Add the following movieclip action to the instance of mv_bar.

onClipEvent (enterFrame) { 
indicator = Math.round(Math.random() * 100);
if (indicator > 55 && this._y > 5) {
this._y -= 10;
} else if (indicator < 45 && this._y < 55) {
this._y += 10;

6. On the bottom layer, draw the following graphic with the dimensions shown here — choose any color you like!


7. Align the graphic with the mv_bar instance, like this:


8. Set the color of the lowest block to black (making it the same color as the movie background).


9. Set the properties of layers, making the upper layer a mask, and the lower layer a masked layer.


10. Go back to Scene 1, and rename Layer 1, "LED". Drag several instances of mv_LEDbar on to the stage. Align the instances as shown here.


11. Add a layer above the LED layer, and name it "Frame". Draw a rectangle, then delete the fill color so that you can see the LED instances beneath.


We’re finished! Test the movie and you’ll see your Flash LED display.

Georgina LaidlawGeorgina Laidlaw
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Georgina has more than fifteen years' experience writing and editing for web, print and voice. With a background in marketing and a passion for words, the time Georgina spent with companies like Sausage Software and sitepoint.com cemented her lasting interest in the media, persuasion, and communications culture.

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