magicbox.java

基于J2ME 开发的冒险类手机游戏

package zonja;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.Random;

public class MagicBox extends ZonSprite {

	public MagicBox(int scrWidth, int scrHeight) {
		super(scrWidth, scrHeight);
		setRealSize(16, 20);
	}
	
	public static final int NO_TREASURE = 0xFFFF;
	
	private static Random rand = null;
	
	private int treasureIndex = NO_TREASURE;

	private boolean beAttacked = false;
	
	private boolean beExposed = false;
	
	private boolean beCollected = false;
	
	public boolean saveData(DataOutputStream dos) {
		if(!super.saveData(dos))
			return false;
		try {
			dos.writeBoolean(beAttacked);
			dos.writeBoolean(beExposed);
			dos.writeBoolean(beCollected);
		}
		catch(Exception e) {
			return false;
		}
		
		return true;
	}

	public boolean loadData(DataInputStream dis) {
		if(!super.loadData(dis))
			return false;
		try {
			beAttacked = dis.readBoolean();
			beExposed = dis.readBoolean();
			beCollected = dis.readBoolean();
		}
		catch(Exception e) {
			return false;
		}
		
		return true;
	}
	
	void mainAction() {
		if (offsetX < scrWidth && offsetX + frameWidth > 0){
			isVisible = true;
		} else 
			isVisible = false;
		
		if (beAttacked){
			if (frameIndex == 2){
				rand = new Random();
				int num = rand.nextInt();
				if(num % 7 == 0){
					if(treasureIndex != 5){
						treasureIndex = 3;
					}
				}
				rand = null;
				
				if (treasureIndex == 5){
					setPosition(offsetX, offsetY - 32);
					setFrameSequence(5, 5);
				} else if (treasureIndex == 3){
					setPosition(offsetX, offsetY - 32);
					setFrameSequence(3, 4);
				} else {
					setFrameSequence(6, 6);
				}
				beExposed = true;
			//	beAttacked = false;
			}
			nextFrame();
		}
		if (beCollected){
			isVisible = false;
			beExposed = false;
			//beCollected = false;
		}
		
		if(hVelocity != 0)
			changeWorldOffset(hVelocity, 0);
	}

	public int getTreasureIndex() {
		return treasureIndex;
	}

	public void setTreasureIndex(int treasureIndex) {
		this.treasureIndex = treasureIndex;
	}

	public boolean isAttacked() {
		return beAttacked;
	}

	public void setAttacked(boolean beAttacked) {
		this.beAttacked = beAttacked;
	}

	public boolean isCollected() {
		return beCollected;
	}

	public void setCollected(boolean beCollected) {
		this.beCollected = beCollected;
	}

	public boolean isExposed() {
		return beExposed;
	}

	public void setExposed(boolean beExposed) {
		this.beExposed = beExposed;
	}
	
}