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In version 1.4 of the Java 2 SDK, Sun Microsystems introduced support for full-screen exclusive mode, an operating system feature that lets programs obtain exclusive access to and render their output to the entire screen, which results in high-performance graphics. (Microsoft Windows implements full-screen exclusive mode via its DirectX technology, for example.) This Java Fun and Games installment reveals this support in the context of an "under the sea" application and its animation engine.
This article first introduces you to the "under the sea" (UTS) application, where you learn about the application's image and audio resources. The article next explores the application's architecture in terms of the application class, the animation and audio classes, and the resource-loader class. You next tour the animation engine's engine class, animation and audio interfaces, and exception classes. In closing, this article focuses on how to deploy the application.
|Unlike most of the previous Java Fun and Games installments, which I wrote from the perspective of J2SE 1.4, this installment requires Java SE 5.0. For thorough coverage of Java's support for full-screen exclusive mode, consult the Java Tutorial.|
I've created a UTS application that works with the animation engine to animate underwater sea life over the entire screen. This application's source code, audio/image resource, and miscellaneous files can be downloaded from Resources.
This figure presents a single animation frame. This frame reveals a suitable background, an animated angel fish, two instances of an animated tiger barb, two instances of an animated zebra fish, two instances of an animated plant, and three instances of an animated bubble sequence.
The figure shows various graphics images that I've combined into a somewhat realistic underwater scene: I created the background image with the Terragen scenery generator and enhanced the resulting image to achieve a bluish haze in the distance; the angel fish, tiger barb, and zebra fish images were made available to me courtesy of Dave Sutton at Sevenoaks Art; and the bubbles/plants images are my own creations.
Each type of fish requires 16 images (8 for moving left to right, and 8 for moving right to left), the bubble sequence requires
8 images, and the plant animation requires 3 images. The background image and one other image (used for hiding the mouse cursor)
round out the image resources. These image resources are organized into gif files that are stored in a hierarchical resource
directory structure, rooted in the
images angelfish lfish1.gif lfish2.gif lfish3.gif lfish4.gif lfish5.gif lfish6.gif lfish7.gif lfish8.gif rfish1.gif rfish2.gif rfish3.gif rfish4.gif rfish5.gif rfish6.gif rfish7.gif rfish8.gif bubbles bubbles1.gif bubbles2.gif bubbles3.gif bubbles4.gif bubbles5.gif bubbles6.gif bubbles7.gif bubbles8.gif misc background.gif white.gif plant plant1.gif plant2.gif plant3.gif tigerbarb lfish1.gif lfish2.gif lfish3.gif lfish4.gif lfish5.gif lfish6.gif lfish7.gif lfish8.gif rfish1.gif rfish2.gif rfish3.gif rfish4.gif rfish5.gif rfish6.gif rfish7.gif rfish8.gif zebrafish lfish1.gif lfish2.gif lfish3.gif lfish4.gif lfish5.gif lfish6.gif lfish7.gif lfish8.gif rfish1.gif rfish2.gif rfish3.gif rfish4.gif rfish5.gif rfish6.gif rfish7.gif rfish8.gif
Along with presenting animations, the UTS application is capable of playing an audio clip (in the Sun AU format) to add realism. This audio clip can be toggled off and on by pressing the "A" key.
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