Dragable Masks in Flash 5
Creating the PartsWe'll start by creating the two movie clips and the button. Hit F8 to create a new movie clip (or do it from the menu). Name the new clip 'dragMovieClip'. Now you should be in the edit mode for that clip. Create three layers. Name the top one 'button', the middle one 'mask', and the bottom one 'image'.
In the 'button' layer create a button that is the exact size and shape of what the mask will create later. Go into the edit mode for the button (you can doulbel-click on the button to get there). Insert a key frame in the HIT frame. Set the coordinates of the shape to 0,0. Now delete the shape in the other three frames. Return to the edit movie clip mode. You should have a button that is a semi-transparent green, which is how Flash displays a clear button.
Next highlight the image layer. Chose Import from the file menu and import the image you are going to mask. Once the image has been imported, resize it as needed, select it, and save it as a movie clip (F8). Name the new movie clip 'bgImage'. Double-click on the new clip to get to its edit mode. Set the coordinates for the picture to 0,0. It will be centered on the stage by default. Reutrn to the edit mode for the 'dragMovieClip' clip. Now set the coordinates of 'bgImage' to 0,0 inside of 'dragMovieClip'. While the clip is still selected, go to the Instance panel and give the clip the an instance name, 'bgImage', the same as its name in the library. (The names do not have to match for the effect to work. You can choose any instance name as long as the path is correct in the scripting.) Exit edit mode and return to the main stage and set the coordinates of 'dragMovieClip' to 0,0.
Go back into the edit mode of 'dragMovieClip'. Make sure you are now on the mask layer and draw the mask the same as you did the button. you can copy and past the shape from the button edit mode if it makes it easier. Align the button and mask and place them on the stage where you would like them to be when the movie loads. Right click on the title section of the mask layer and select mask so that it is now a mask layer. The 'bgImage' clip should disapear except for where the mask is located. It is now time to add the scripting.
|» Level Intermediate|
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