Wired Movies and Sprites

Adding More Images for Other Sprites

To add more images to other sprites, you assign group IDs to those images, using the AssignImageGroupIDsToKeyFrame function. You then create the sprite track, add it to theMovie , and then begin to add samples to the tracks' media, as shown in Listing 3-4 .

Listing 4 Adding more images to other sprites and specifying button actions



 
// assign group IDs to the images

    AssignImageGroupIDsToKeyFrame(mySample);

    

    // add samples to the sprite track's media

    //

    

    

    BeginMediaEdits(myMedia);



    // go to beginning button with no actions

    myErr = QTNewAtomContainer(&myBeginButton);

    if (myErr != noErr)

        goto bail;

    myLocation.h    = (1 * kSpriteTrackWidth / 8) - (kStartEndButtonWidth 

                                                    / 2);

    myLocation.v    = (4 * kSpriteTrackHeight / 5) - 

                                    (kStartEndButtonHeight / 2);

    isVisible       = false;

    myLayer         = 1;

    myIndex         = kGoToBeginningButtonUpIndex;

    myErr = SetSpriteData(myBeginButton, &myLocation, &isVisible, 

                            &myLayer, &myIndex, NULL, NULL, myActions);

    if (myErr != noErr)

        goto bail;