/** * Title:        吃豆子<p> * Description:  小游戲<p> * Copyright:    Copyright (c) Nothing<p> * Company:      Raindrop<p> * @author Nothing * @version 1.0 */package eatbean;import java.awt.*;import java.util.Vector;//import eatbean.util.*;import eatbean.conf.*;import eatbean.event.*;/** 處理類之間的關系 */public class Mediator {	private Map map = null;	private OffScreen offScreen = null;	/** Fairy容器 */	private Vector fairyV = new Vector();	/** Sprite容器 */	private Vector spriteV = new Vector();	private static boolean paused = true;	private static int doneCount = 0;	private static int actorCount = 0;	private static boolean locked = false;	private GameListener gameListener = null;	private ScreenListener screenListener = null;	private Object syncGameLstn = new Object(); //  同步add/remove GameListener    public Mediator() {    }	public void createMap(int[][] ii, int x, int y) throws Exception {		map = new Map(this, ii, x, y);		map.paint();	}	/** 創建一Fairy對象 */	public boolean createFairy() {		boolean result = false;		Fairy fairy = new Fairy(this);		if(fairy != null)			if(fairyV.size() < SysParam.MAX_NUM_FAIRY) {					fairy.paint();					fairyV.add(fairy);					fairy.act();					actorCount++;					result = true;			}		return result;	}	/** 創建一Sprite對象 */	public boolean createSprite() {		boolean result = false;		Sprite sprite = new Sprite(this);		if(sprite != null)			if(spriteV.size() < SysParam.MAX_NUM_SPRITE) {				sprite.paint();				spriteV.add(sprite);				sprite.act();				actorCount++;				result = true;			}		return result;	}	/** 創建OffScreen對象 */	public boolean createOffScreen(Container c) {		offScreen = OffScreen.getInstance(c);		return true;	}	public OffScreen getOffScreen() { return offScreen; }	/** 返回Actor當前位置(Map索引) */	public Pos getCurrMapPos(Pos[] pos, Rect rect) {		//rect 的重心		Pos center = new Pos(rect.x + rect.width/2, rect.y + rect.height/2);		Pos result = null;		for(int i = 0; i < pos.length; i++) {			MapElement e = map.getElement(pos[i]);			if(e.getRect().contains(center)) {				result = pos[i];				break;			}		}		return result;	}	/** 重繪背景 */	public void repaintBg(Actor actor, Pos[] pos) {		for(int i = 0; i < pos.length; i++) {			MapElement e = map.getElement(pos[i]);			e.draw(offScreen);		}	}	/** 返回被Actor覆蓋的MapElement的位置 */	public Pos[] getCoveredElementsMapPos(Actor actor) {		// 當前Map索引		Pos actorMapPos = actor.getMapPos();		Rect rect = actor.getRect();		MapElement e = null;		Pos elementPos = (Pos)actorMapPos.clone();		Vector v = new Vector();		Pos[] result = null;		v.add(elementPos.clone());		// 因保持Actor.rect<MapElement.rect,且Actor居中,故只需取觀察上下或左右兩個方向的元素		v.add(elementPos.clone());		search(v, (Pos)elementPos.clone(), rect, actor.getDirection());	//正方向		search(v, (Pos)elementPos.clone(), rect, actor.getReverse());	//反方向		if(v.size() > 0) {			result = new Pos[v.size()];			for(int i = 0; i < v.size(); i++) result[i] = (Pos)v.elementAt(i);		}		return result;	}	private void search(Vector v, Pos initPos, Rect r, int dir) {		while(true) {			if(dir == Actor.DIR_NORTH) //UP				initPos.y--;			else if(dir == Actor.DIR_SOUTH) //DOWN				initPos.y++;			else if(dir == Actor.DIR_WEST) //LEFT				initPos.x--;			else if(dir == Actor.DIR_EAST) //RIGHT				initPos.x++;			else	//did you see a ghost hohohoho				break;			MapElement e = null;			if(((e = map.getElement(initPos)) != null) && r.intersects(e.getRect()))				v.add(initPos.clone());			else break;		}// end while	}	/** 按Actor的實際類型,返回Actor當前的Rect是否合法 */	public boolean acceptable(Actor actor) {		boolean result = true;		Pos[] p = actor.getCurrCoveredPos();		if((actor instanceof Fairy) || (actor instanceof Sprite)) {			if(p != null) {				for(int i = 0; i < p.length; i++)					if( !((map.getElement(p[i]) instanceof Room) ||							(map.getElement(p[i]) instanceof Door)) ) {						result = false;						break;					}			}		}		return result;	}	/** 由Actor調用,返回p的下一個元素是否合法 */	public boolean acceptable(Pos p, int dir) {		boolean result = false;		Pos tmp = (Pos)p.clone();		MapElement e = null;		switch(dir) {			case Actor.DIR_WEST :				p.x = p.x - 1;				break;			case Actor.DIR_EAST :				p.x = p.x + 1;				break;			case Actor.DIR_NORTH :				p.y = p.y - 1;				break;			case Actor.DIR_SOUTH :				p.y = p.y + 1;				break;			default :				return false;		}		if((e = map.getElement(p)) != null)			if((e instanceof Room) || (e instanceof Door))				result = true;		p = tmp;		return result;	}	/** 同步方法，當最后一個Actor調用此方法時執行offScreen.flush()，否則阻塞Actor */	public synchronized void flushScreen(Actor actor) {		if(!fairyV.contains(actor) && !spriteV.contains(actor)) return;		doneCount++;		if(doneCount < actorCount) {			//try { wait(); } catch(Exception ex) { System.out.println("error: " + ex); };			try {				//wait();				wait(RtParam.sleepTime*2);  //設置等待時間,防止某一Actor被殺時其他所有Actor都掛在這里			} catch(Exception ex) { System.out.println("error: " + ex); };		} else {			try {				Thread.currentThread().sleep(RtParam.sleepTime);			} catch(InterruptedException ex) { System.out.println("error: " + ex); }			doneCount = 0;			paintAllActor();			offScreen.flush();			notifyAll();		}	}	/** 檢查是否存在與Fairy相交的Sprite */	public void checkSpriteIntersect(Fairy fairy) {		Sprite sprite = null;		for(int i = 0; i < spriteV.size(); i++) {			if(((Sprite)spriteV.elementAt(i)).getRect().intersects(fairy.getRect())) {				sprite = (Sprite)spriteV.elementAt(i);				break;			}		}		if(sprite != null) doIntersect(fairy, sprite);	}	/** 永遠返回false.此方法可決定Sprite相互是否可以重疊 */	public boolean hasIntersectSprite(Sprite sprite) {		boolean result = false;		/*		for(int i = 0; i < spriteV.size(); i++) {			if(((Sprite)spriteV.elementAt(i)).getRect().intersects(sprite.getRect())) {				result = true;				break;			}		}		*/		return result;	}	/** Fairy與Sprite相遇時調用此方法,觸發MSG_ACTOR_EAT事件 */	public void doIntersect(Fairy fairy, Sprite sprite) {		setPaused(true);		GameEvent ge = null;		if(fairy.getLevel() > sprite.getLevel()) {			//sprite被殺			ge = new GameEvent(sprite, GameEvent.MSG_ACTOR_EAT);		    sprite.clear();			sprite.die();			spriteV.removeElement(sprite);			setPaused(false);		} else {			//fairy被殺			ge = new GameEvent(fairy, GameEvent.MSG_ACTOR_EAT);			fairy.clear();			fairy.die();			fairyV.removeElement(fairy);		}		actorCount--;		System.out.println("doIntersect(...)");		if(gameListener != null) gameListener.postMsg(ge);	}	private void paintAllActor() {		for(int i = 0; i < spriteV.size(); i++)			((Sprite)spriteV.elementAt(i)).paint();		for(int i = 0; i < fairyV.size(); i++)			((Fairy)fairyV.elementAt(i)).paint();	}	public void eatBean(Fairy fairy) {		MapElement e = getElement(fairy.getMapPos());		if((e != null) && (e instanceof Room)) {			if( !((Room)e).isEmpty() ) {				((Room)e).setEmpty();				map.decBeanNum();				if(gameListener != null) {					gameListener.postMsg(new GameEvent(e, GameEvent.MSG_OBJECT_EAT));                    //if(Debug.ON) Debug.println("beanNum: " + Integer.toString(map.getBeanNum()));					if(map.getBeanNum() == 0)						gameListener.postMsg(new GameEvent(e, GameEvent.MSG_STATION_DONE));				}			}		}	}	/** 將所有東東置空(包括map) */	public void killAll() {		/*		locked = true;		paused = true;		try {			while(doneCount != 0) {				try {					Thread.currentThread().sleep(10);				} catch(Exception ex) {}			}			for(int i = 0; i < spriteV.size(); i++)				((Sprite)spriteV.elementAt(i)).die();			for(int i = 0; i < fairyV.size(); i++)				((Fairy)fairyV.elementAt(i)).die();			spriteV.clear();			fairyV.clear();			actorCount = 0;			doneCount = 0;			map = null;		} finally {			locked = false;		}		System.gc();		*/		resetAllActor();		map = null;	}	public void resetAllActor() {		locked = true;		paused = true;		try {			/*			while(doneCount != 0) {				try {					Thread.currentThread().sleep(10);				} catch(Exception ex) {}			}			*/			for(int i = 0; i < spriteV.size(); i++) {				Sprite sprite = (Sprite)spriteV.elementAt(i);				sprite.clear();				sprite.die();			}			for(int i = 0; i < fairyV.size(); i++) {				Fairy fairy = (Fairy)fairyV.elementAt(i);				fairy.clear();				fairy.die();			}			spriteV.clear();			fairyV.clear();			actorCount = 0;			doneCount = 0;		} finally {			locked = false;		}		System.gc();	}	public void fairySetNextDirection(int dir) {	    if(dir == Fairy.DIR_EAST				|| dir == Fairy.DIR_NORTH	    		|| dir == Fairy.DIR_SOUTH		    	|| dir == Fairy.DIR_WEST) {			if(!fairyV.isEmpty()) {			    Fairy fairy = (Fairy)fairyV.firstElement();				fairy.setNextDirection(dir);			}		}	}	public void fairyResetNextDirection() {		if(fairyV.isEmpty()) return;	    Fairy fairy = (Fairy)fairyV.firstElement();		fairy.setNextDirection(fairy.getDirection());	}	public void addGameListener(GameListener l) {		synchronized(syncGameLstn) {		    if(l == null || gameListener != null) return;	    	gameListener = l;		}	}	public void removeGameListener() {		synchronized(syncGameLstn) {			if(gameListener != null) {				gameListener.free();				gameListener = null;			}		}	}	public void addScreenListener(ScreenListener l) {		offScreen.addScreenListener(l);	}	public ScreenListener removeScreenListener() {	    return offScreen.removeScreenListener();	}	public void beep() { Toolkit.getDefaultToolkit().beep(); }	public Pos getFairyBornPos() {		if(map == null) return null;		return map.getFairyBornPos();	}	public Pos getSpriteBornPos() {		if(map == null) return null;		return map.getSpriteBornPos();	}	public MapElement getElement(Pos pos) {		if(map == null) return null;		return map.getElement(pos);	}	public void repaintBg() {		if(map == null) return;		map.paint();	}	public boolean getPaused() { return paused; }	public int getMapWidth() {		if(map == null) return -1;		return map.getWidth();	}	public int getMapHeight() {		if(map == null) return -1;		return map.getHeight();	}	public int[][] getMapIntElements() {	    return map.getMapIntElements();	}	public int getOffScreenWidth() {		if(offScreen == null) return -1;		return offScreen.getWidth();	}	public int getOffScreenHeight() {		if(offScreen == null) return -1;		return offScreen.getHeight();	}	public Pos getFairyMapPos() {		Pos result = null;		Fairy fairy = null;		try {			fairy = (Fairy)fairyV.firstElement();		} catch(Exception ex) {}		if(fairy != null) result = fairy.getMapPos();		return result;	}	public void setPaused(boolean p) { if(!locked) paused = p; }}