Implementation of the Sheepdog MIDlet

The example application includes the following classes:

• SheepDogMIDlet

  A state machine class, that manages the various screens and transitions between them.

• SplashScreen

  A class that displays an image in the center of the screen, so the MIDlet can do initialization while this splash screen is displayed.

• MenuList

  The menu list is the screen shown after the splash screen, when the game is over, or when the game is paused.

• InstructionsScreen

  The instructions screen displays instruction text to the user.

• HighScoreScreen

  The high-score screen is used to display the current high score (the best time so far).

• SheepdogCanvas

  The sheepdog canvas is the main game screen.

• Field

  This class draws the grassy field and water.

• Sheepdog

  This class draws the sheepdog.

• Sheep

  This class draws the sheep and creates the artificial intelligence (AI) behavior for the animals.

• GameOverScreen

  This screen is displayed when the player gets the fifth sheep into the fold.

• SoundEffects

  This class uses the MIDP 2.0 Media API to play four sound effects.

Figure 48: Class diagram of the Sheepdog game