sub.java

系统是一个用JAVA来实现的潜艇大战游戏。厘米那包括可执行源程序

/* 
 * 
 * 创建日期 2006-5-17
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package net.wangsong;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.*;



/**
 * @author user
 * 
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */

public class Sub extends Sprite implements SubObject {

    /**
     * 
     * @uml.property name="subCanvas"
     * @uml.associationEnd multiplicity="(0 1)"
     */
    
    private SubCanvas subCanvas;

	private LayerManager layerManager;
	private boolean lifeState = false;    //生命状态
	private int troop = 0;
	
	private int levelState     = 0;       //自身以及子弹速度状态.　５1 - 5
	private int directionState = 1;       //当前图形方向.  0为左, 1为右
	boolean hurtBoolean        = false;
	
	
	private int keyState        = 0;
	private int hpLife          = 15;     //玩家生命值HP
	
	private int xStep           = 15;
	private int yStep           = 15;
	
	private int x = getX();
	private int y = getY();
	private int w = getWidth();
	private int h = getHeight();
	
	private int oldX;
	private int oldY;
	
	public Sub(SubCanvas subCanvas, Image image, int xPosstion, int yPosstion, LayerManager layerManager){
		super(image);
		this.subCanvas    = subCanvas;
		this.setPosition(xPosstion, yPosstion);
		this.layerManager = layerManager;
		lifeState         = true;
		
		//设定敌我识别
		this.troop          = SubCanvas.TROOP_PLAYER;
		this.levelState     = 3;
		this.directionState = 1;
	}
	
	/** 根据传入的键参数执行移动
	 * @param keyState
	 */
	public void movePosition(int keyState){
		this.keyState = keyState;
		
		//判断走向, 执行移动
		x = getX();
		y = getY();
		oldX = x;
		oldY = y;
		w = getWidth();
		h = getHeight();
		
		if((keyState & GameCanvas.DOWN_PRESSED) != 0 && subCanvas.gameState == subCanvas.GAME_RUN){
			//下移
			y = y + yStep;
			
		}else if((keyState & GameCanvas.UP_PRESSED) != 0 && subCanvas.gameState == subCanvas.GAME_RUN){
			//上移
			y = y - yStep;
			
		}else if((keyState & GameCanvas.LEFT_PRESSED) != 0 && subCanvas.gameState == subCanvas.GAME_RUN){
			//左移
		    if(this.directionState == 1){
		        setTransform(Sprite.TRANS_MIRROR);
		        this.directionState = 0;
		    }else{
		        x = x - xStep;
		    }
			
		}else if((keyState & GameCanvas.RIGHT_PRESSED) != 0 && subCanvas.gameState == subCanvas.GAME_RUN){
			//右移
		    if(this.directionState == 0){
		        setTransform(Sprite.TRANS_NONE);
		        this.directionState = 1;
		    }else{
		        x = x + xStep;
		    }
			
		}

		/** 初始化鱼雷图层
	     * @param subCanvas         Canvas类
	     * @param image             鱼雷图片
	     * @param xPosition         初始化坐标起点
	     * @param yPosition         初始化坐标终点
	     * @param troop             敌我标识
	     * @param levelState        速度水平
	     * @param directionState    初始化方向
	     */
		//确保图形在游戏区域
		if(x > SubCanvas.WORLD_WIDTH - w){
			x = SubCanvas.WORLD_WIDTH - w;
		}
		if(x < 0){
			x = 0;
		}
		if(y > SubCanvas.WORLD_HEIGHT - h){
			y = SubCanvas.WORLD_HEIGHT - h;
		}
		if(y < 0){
			y = 0;
		}
		
		this.setPosition(x, y);
		
		
		//处理碰撞事件
		collideStuff();
		
		//当受到伤害时
		if(hurtBoolean){
		    this.hurt();
		}
		
		//重新设置图层显示区域
		subCanvas.adjustViewWindow(x, y, getWidth(), getHeight());
	}
	
	public void fire(){
	    if(subCanvas.tinfishCollectionVector.size() <= 10){
	        //开火
	        Image image = SubMIDlet.createImage("/res/tinfish3.png");
	        
	        if(this.directionState == 0){
	            //鱼雷方向向左
	            Tinfish tinfish = new Tinfish(subCanvas, image, x, y + h / 2, 
		                this.troop, this.levelState, this.directionState);
	            
	            //添加鱼雷到数组以及图层上
		        layerManager.insert(tinfish, 0);
		        subCanvas.tinfishCollectionVector.addElement(tinfish);
		        
	        }else{
	            //鱼雷方向向左
	            Tinfish tinfish = new Tinfish(subCanvas, image, x + w, y + h / 2, 
		                this.troop, this.levelState, this.directionState);
	            
	            //添加鱼雷到数组以及图层上
		        layerManager.insert(tinfish, 0);
		        subCanvas.tinfishCollectionVector.addElement(tinfish);
	        }
	        
	        
	        
	        
	        image = null;
	    }
	}
	
	/** 
	 * 根据内部存储的碰撞物件数组, 处理碰撞事件
	 */
	public void collideStuff(){
	    Sprite  collideable = null;
	    hurtBoolean = false;

		
		for(int j = 0; j < subCanvas.enemyCollectionVector.size(); j++)
        {
            collideable = (Sprite) subCanvas.enemyCollectionVector.elementAt(j);
            if (collidesWith(collideable, true))
            {
                hurtBoolean = true;
            }
        }
		
	}
	
	private void hurt(){
	    this.hpLife --;
	    if(hpLife <= 0){
	        lifeState = false;
	    }
	}
	

	
    /**
     * @return 返回 lifeState。
     */
    public boolean isLifeState() {
        return lifeState;
    }
    
    /** 获取玩家生命值
     * @return 返回 hpLife。
     */
    public int getHpLife() {
        return hpLife;
    }
    /**
     * @param hpLife 要设置的 hpLife。
     */
    public void setHpLife(int hpLife) {
        this.hpLife = hpLife;
    }
}