if(this.SEABACK_DENSITY >= 4){
SEABACK_DENSITY = 0;
}
Image image = SubMIDlet.createImage("/res/densityLayer" + this.SEABACK_DENSITY + ".png");
layerSeaback = new TiledLayer(WIDTH_IN_TILES, HEIGHT_IN_TILES,
image, TILE_WIDTH, TILE_HEIGHT);
for(int row = 0; row < HEIGHT_IN_TILES; row++){
for(int column = 0; column < WIDTH_IN_TILES; column++){
layerSeaback.setCell(column, row, SubMIDlet.createRandom(NUM_DENSITY_LAYER_TILES) + 1);
}
}
layerSeaback.setPosition(0, 0);
layerManager.append(layerSeaback);
image = null;
}
/**
* 创建沉船图层
*/
protected void createSunkenBoat(){
Image imageSunkenBoat = SubMIDlet.createImage("/res/sunkenBoat.png");
//出现的沉船数量
int numSunkenBoats = 1 + (WORLD_WIDTH / (3 * imageSunkenBoat.getWidth()));
Sprite sunkenBoat;
int bx = 0;
