Flash iOS Apps Cookbook

Using an update loop

Listening for events can be expensive. For a handler to receive an event, Flash must create an object in memory that represents that event. Repeatedly allocating memory can hurt the performance of your app, and this is especially true if you are listening for Event.ENTER_FRAME from a large number of display objects.

Let us see how to minimize the impact of handling multiple ENTER_FRAME events by making some adjustments to the architecture of your example app. We will also add some additional code to individually control the speed of each bubble, making the app a little more polished.

How to do it...

You will be required to make code changes to both Main.as and Bubble.as:

1. First start by opening Bubble.as.
2. Within the constructor, ...