Motorola J2ME Specifications download pdf (Page 55)

Gaming API and Sound

SoundEffect Class

The SoundEffect class encapsulates the data for a game sound effect. A game may

create several

SoundEffect objects, one for each of the sounds that it needs to play.

The sound data may be stored on the device as a named resource in the application JAR

file, or it can be stored on a server and retrieved via the network.

SoundEffect

instances are played by a

GameScreen.

SoundEffect Methods

The SoundEffect class implements the following method:

• public static SoundEffect

createSoundEffect(String resource) throws

FileFormatNotSupportedException – Creates a

SoundEffect for

the sound data stored in the specified named resource or URL. The data must be in a

sound format that is supported by the device. Though additional formats may be

supported, all devices must support some format yet to be determined.

Using SoundEffect

As described above, a game can need several different sound effects. The code below

exemplifies the creation of some

SoundEffect objects:

The following is a code sample to show the creation of

SoundEffect objects:

SoundEffect Objects

try{

// Create a SoundEffect using a wave file inside the JAR

SoundEffect s1 = createSoundEffect("/jump.wav");

// Create a SoundEffect using a wave located

// on a web site

SoundEffect s2=

createSoundEffect("http://www.motorola.com/sound/mp.wav");

}catch(FileFormatNotSupportedException fe){}

Sprite Class

The Sprite class is used to create graphic images, animated or non-animated, that a

user can interact with and move around.

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Motorola J2ME Specifications Page 55