mmenucanvas.java

j2me快乐蛇0.2版代码,内有经典版贪食蛇和新版

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import java.io.IOException;
import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.Display;
import java.lang.Thread;
public class mmenuCanvas extends Canvas {
	private final static byte State_Menu=1;
	private final static byte State_Score=2;
	private final static byte State_Option=3;
	private final static byte State_Choose=4;
	private byte curState;
	private Image menu;
	private int csel,optsel,gamesel;
	private Image selImg;
	private MIDlet parent=null;
	private GameOpt option=null;
	private SnakeCanvas classic=null;
	private NewSnakeCanvas newSnake=null;
	private Thread theGame;
	private boolean backwait=false;
	public mmenuCanvas(MIDlet p) {
		try{
			menu=Image.createImage("/menu.png");
		}catch(IOException ioe){System.out.println(ioe.getMessage());};
		int[] selrgb=new int[1980];
		for(int i=0;i<22;i++) 
			for(int j=0;j<90;j++)
				if((i+j)%2==0)selrgb[i*90+j]=0xff8040; 
				else selrgb[i*90+j]=0xffff8040;
		selImg=Image.createRGBImage(selrgb,90,22,true);
		curState=State_Menu;
		csel=0;
		optsel=0;
		gamesel=0;
		option=new GameOpt();
		parent=p;
		setFullScreenMode(true);
//		System.out.println("active thread: "+Thread.activeCount());
	}

	protected void paint(Graphics g) {
//		System.out.println("active thread: "+Thread.activeCount());
//		System.out.println("free memory: "+Runtime.getRuntime().freeMemory());
		switch(curState){
		case State_Menu:	
			g.setColor(0xff8040);
			g.fillRect(0,0,128,160);
			g.drawImage(menu,20,20,g.TOP|g.LEFT);
			for(int i=0;i<4;i++)
				g.drawImage(selImg,20,21+22*i,g.TOP|g.LEFT);
			g.setClip(20,21+22*csel,90,22);
			g.drawImage(menu,20,20,g.TOP|g.LEFT);
			g.setClip(0,0,128,160);
			break;
		case State_Score:
			g.setColor(0xffffff);
			g.fillRect(0,0,128,160);
			g.setColor(0);
			g.drawString("SCORE",40,70,g.TOP|g.LEFT);
			break;
		case State_Option:
			g.setColor(0xffffff);
			g.fillRect(0,0,128,160);
			if(optsel==0){
				g.setColor(255,128,0);
				g.drawString("Sound: "+ option.sound,20,50,g.TOP|g.LEFT);
				g.setColor(0);
				g.drawString("Vibrate: "+ option.vibrate,20,70,g.TOP|g.LEFT);
			}else{
				g.setColor(0);
				g.drawString("Sound: "+ option.sound,20,50,g.TOP|g.LEFT);
				g.setColor(255,128,0);
				g.drawString("Vibrate: "+ option.vibrate,20,70,g.TOP|g.LEFT);
			}
			break;
		case State_Choose:
			g.setColor(255,128,64);
			g.fillRect(0,0,128,160);
			g.setColor(0,255,255);
			g.drawString("CLASSIC",20,20,g.TOP|g.LEFT);
			g.drawString("  NEW  ",20,40,g.TOP|g.LEFT);
			g.drawString(" BACK  ",22,60,g.TOP|g.LEFT);
			g.setColor(255,0,0);
			if(gamesel==0) 		g.drawString("CLASSIC",20,20,g.TOP|g.LEFT);
			else if(gamesel==1)	g.drawString("  NEW  ",20,40,g.TOP|g.LEFT);
			else if(gamesel==2) g.drawString(" BACK  ",22,60,g.TOP|g.LEFT);
			break;
		}
	}
	
	public void keyReleased(int keyCode){
		if(backwait){backwait=false;return;}
		int gamekey=getGameAction(keyCode);
		switch(curState){
		case State_Menu:
			if(gamekey==DOWN)	{csel+=1;if(csel==4) csel=0;repaint();}
			else if(gamekey==UP)	{csel-=1; if(csel==-1) csel=3;repaint();}
			else if(gamekey==FIRE){
				if(csel==0){
					curState=State_Choose;
					gamesel=0;
					repaint();
				}else if(csel==1){
					curState=State_Score;
					repaint();
					serviceRepaints();
				}else if(csel==2){
					optsel=0;
					curState=State_Option;
					repaint();
					serviceRepaints();
				}else if(csel==3){
					parent.notifyDestroyed();
				}
			}
			break;
		case State_Score:
			csel=0;
			curState=State_Menu;
			repaint();
			serviceRepaints();
			break;
		case State_Option:
			if(gamekey==UP||gamekey==DOWN){
				optsel=1-optsel;
				repaint();
			}else if(gamekey==LEFT||gamekey==RIGHT){
				if(optsel==1) option.vibrate=!option.vibrate;
				else option.sound=!option.sound;
				repaint();
			}else if(gamekey==FIRE){
				csel=0;
				curState=State_Menu;
				repaint();
			}
			break;
		case State_Choose:
			if(gamekey==UP){ gamesel-=1;if(gamesel==-1) gamesel=0;repaint();}
			else if(gamekey==DOWN){ gamesel+=1; if(gamesel==3) gamesel=2;repaint();}
			else if(gamekey==FIRE){
				if(gamesel==0){	
					System.gc();
					classic=new SnakeCanvas(this,option);
					Display.getDisplay(parent).setCurrent(classic);
					theGame=new Thread(classic);
					theGame.start();
				}else if(gamesel==1){
					System.gc();
					newSnake=new NewSnakeCanvas(this,option);
					Display.getDisplay(parent).setCurrent(newSnake);
					theGame=new Thread(newSnake);
					theGame.start();
				}else{
					csel=0;
					curState=State_Menu;
					repaint();
				}
			}
			break;	
		}
	}
	public void backToMenu(){
		curState=State_Menu;
		csel=0;
		backwait=true;
		Display.getDisplay(parent).setCurrent(this);
		repaint();
	}	
}


//		System.out.println("free memory: "+Runtime.getRuntime().freeMemory());