If the SWF library supports Sound, that would be great

Bink · July 30, 2025, 1:35am

I lean on Starling when dealing with animations, as it’s geared towards handling spritesheets. In this way, you can export your animations from anywhere (including Adobe Animate) as image sequences (with alpha). These are converted to optimised spritesheets using something like TexturePacker 6.0.1 (detailed here).

In Starling, these sequences are placed in a Starling MovieClip. These can then have sound/s attached to them at specified frames, using the movieClip.setFrameSound() method.

See this example:

github.com/openfl/starling

samples/demo/src/scenes/MovieScene.hx

80e59c88f


      
          private var _movie:MovieClip;
          
          public function new()
          {
              super();
              var frames:Vector<Texture> = Game.assets.getTextures("flight");
              _movie = new MovieClip(frames, 15);
              
              // add sounds
              var stepSound:Sound = Game.assets.getSound("wing_flap");
              _movie.setFrameSound(2, stepSound);
              
              // move the clip to the center and add it to the stage
              _movie.x = Constants.CenterX - Std.int(_movie.width / 2);
              _movie.y = Constants.CenterY - Std.int(_movie.height / 2);
              addChild(_movie);
              
              // like any animation, the movie needs to be added to the juggler!
              // this is the recommended way to do that.
              addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
              addEventListener(Event.REMOVED_FROM_STAGE, onRemovedFromStage);

The advantage Starling with spritesheets has over say an SWF asset, is that it’s GPU optimised, and incredibly performant.