/* //background.png//01.png */ /* *http://blog.programfan.com/blog.asp?author=qq14923349 *程序之巢制作，移动窗口TiledLayr类例子 *图片存在rec目录下，记得在存之前把格式转换成png,具体方法是: 1,点击开始 2,附件 3,图画板 4,打开图片 5,另存为(可以存作ＰＮＧ了，不要改后续名，否则运行不了) 6,其他工具，可以选用ＰＳ，或者ACDSEE等等改 */import javax.microedition.midlet.MIDlet;import javax.microedition.lcdui.*;import javax.microedition.lcdui.game.*; public class Wcanvas extends MIDlet{ private Display display;  public void startApp(){  display=Display.getDisplay(this);  new wCanvas(display).start();         }  public void pauseApp(){}  public void destroyApp(boolean unkown){}   //System.out.println("试验"); class wCanvas extends GameCanvas implements Runnable{  private Display display; private boolean suspend=false; //暂停  private int frameDelay=100; private Sprite role; private TiledLayer background_1,background_2,background_3; private int []laymap=new int[4];//地图数组 private int roleXspeed,roleYspeed,backgroundXspeed,backgroundYspeend; private int halfwidth=getWidth();  public wCanvas(Display d){                                       //contractor构造涵数 super(true); display=d; display.setCurrent(this);     }  private void start(){  init();//初始化  toStartThread();//启动线程        }  private void init(){ try{ role=new Sprite(Image.createImage("/01.png"),22,22);  background_1=new TiledLayer(1,4,Image.createImage("/background.png"),88,40);  background_2=new TiledLayer(1,4,Image.createImage("/background.png"),88,40);  background_3=new TiledLayer(1,4,Image.createImage("/background.png"),88,40);     } catch(Exception e){ System.out.println(e.toString());     }  int []laymap={1,2,1,2};  for(int i=0;i<laymap.length;i++){  int column=i%1;  int row=(i-column)/16;  background_1.setCell(column,row,laymap[i]);   background_1.setPosition(0,0);  role.setPosition(0,0);      }       }  private void toStartThread(){ Thread t=new Thread(this); t.start();          }  public void run(){  while(!suspend){  Graphics g=getGraphics();  update();//更新和响应按键  judgement();//对ROLE作出判断，同时移动窗口  draw(g);//画图  try{     //频率 Thread.sleep(frameDelay);    } catch(Exception e){System.out.println(e.toString());}          }     }  private void update(){  role.nextFrame();    //蜜蜂不停地动  int keyState=getKeyStates();  if((keyState & LEFT_PRESSED)!=0 ){  roleXspeed=-2; role.move(roleXspeed,0);        } else if((keyState & RIGHT_PRESSED)!=0 ){  roleXspeed=2; role.move(roleXspeed,0);        } if((keyState & UP_PRESSED)!=0 ){  roleYspeed=-2;  role.move(0,roleYspeed);       } else if((keyState & DOWN_PRESSED)!=0 ){  roleYspeed=2; role.move(0,roleYspeed);        }          }  private void judgement(){  if(role.getX()<0){  role.setPosition(0,role.getY());    }  if(role.getX()>15){  role.setPosition(15,role.getY());  if(background_1!=null) { background_1.move(-1,0); }     }  if(background_1!=null) if(background_1.getX()==-background_1.getWidth()){  background_1=null;         }     }             private void draw(Graphics g){  g.setColor(0xffffff);  g.fillRect(0,0,getWidth(),getHeight());  threebackgroundjudgement();  role.paint(g);   g.setColor(0x000000);  g.drawString("宽为"+getWidth()+"   高为  "+getHeight(),15,70,Graphics.TOP|Graphics.LEFT);   flushGraphics();              }    private void threebackgroundjudgement(){   Graphics g=getGraphics();  if(background_1!=null) { background_1.paint(g); } if(background_2!=null) { background_2.paint(g); } if(background_3!=null) { background_3.paint(g); }             } }           }

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