java模拟电梯运行的程序

import java.awt.*; import java.awt.Graphics; import java.util.Random; class Ladder extends Canvas implements Runnable { Thread myLadder; //电梯线程 ladderButton button; //电梯按钮 int people=0; //电梯里最多有20个人 int floor=1; //楼层数 boolean flag=false; //是否到达目的地（电梯是否开门）true开门 boolean flag2=true; //绘制向上或向下箭头，true向上 boolean flag3=false; //控制paint() Ring ring; //响铃 Random rand; //定义随机数生成器 int x_up[]={73,78,83}; //向上箭头的坐标 int y_up[][]={{640,630,640},{520,510,520},{400,390,400},{280,270,280},{160,150,160},{40,30,40}}; int x_down[]={85,90,95}; //向下箭头的坐标 int y_down[][]={{630,640,630},{510,520,510},{390,400,390},{270,280,270},{150,160,150},{30,40,30}}; Ladder(Frame f) { ring=new Ring(); rand=new Random(); myLadder=new Thread(this); button=new ladderButton(f); repaint(); } public void paint(Graphics g) { g.drawLine(5,25,5,745); g.drawLine(105,25,105,745); for(int i=0;i<6;i++) { g.setColor(Color.GRAY); g.drawRect(5,625-i*120,100,20); g.fillRect(5,625-i*120,100,20); g.setColor(Color.DARK_GRAY); g.drawRect(7,647-i*120,46,96); g.drawRect(57,647-i*120,46,96); g.fillRect(7,647-i*120,46,96); g.fillRect(57,647-i*120,46,96); } g.drawLine(5,745,105,745); g.setFont(new Font("宋体",Font.BOLD,16)); //设置字体 g.setColor(Color.RED); for(int i=0;i<6;i++) { if(people==20) g.drawString("FULL "+floor,15,640-i*120); ////画文字，电梯里最多有20个人 else g.drawString(""+floor,15,640-i*120); } if(flag2) //画箭头 { for(int i=0;i<6;i++) {g.drawPolygon(x_up,y_up[i],3); g.fillPolygon(x_up,y_up[i],3);} g.setColor(Color.GRAY); for(int i=0;i<6;i++) {g.drawPolygon(x_down,y_down[i],3);g.fillPolygon(x_down,y_down[i],3); } } else if(!flag2) { for(int i=0;i<6;i++) {g.drawPolygon(x_down,y_down[i],3);g.fillPolygon(x_down,y_down[i],3); } g.setColor(Color.GRAY); for(int i=0;i<6;i++) {g.drawPolygon(x_up,y_up[i],3); g.fillPolygon(x_up,y_up[i],3);} } if(flag) arrived(g); //到达目的地 } public void arrived(Graphics g) //电梯到达 { int left=46,right=57; ring.sound(); //响铃 while(left>6) //电梯门开 { g.setColor(Color.WHITE); g.drawRect(7,647-(floor-1)*120,left,96); g.drawRect(right,647-(floor-1)*120,left,96); g.fillRect(7,647-(floor-1)*120,left,96); g.fillRect(right,647-(floor-1)*120,left,96); left--; right++; g.setColor(Color.DARK_GRAY); g.drawRect(7,647-(floor-1)*120,left,96); g.drawRect(right,647-(floor-1)*120,left,96); g.fillRect(7,647-(floor-1)*120,left,96); g.fillRect(right,647-(floor-1)*120,left,96); try{ Thread.sleep(100); } catch (Exception e) {} } people=people-rand.nextInt(10); //随机下p个人，p在0到5之间 if(people<0) people=0; people=people+rand.nextInt(5); //随机上p个人，p在0到5之间 if(people>20) people=20; try{ Thread.sleep(2000); } //3秒后关电梯门 catch (Exception e) {} while(left<47) //电梯门关 { g.setColor(Color.WHITE); g.drawRect(7,647-(floor-1)*120,left,96); g.drawRect(right,647-(floor-1)*120,left,96); g.fillRect(7,647-(floor-1)*120,left,96); g.fillRect(right,647-(floor-1)*120,left,96); left++; right--; g.setColor(Color.DARK_GRAY); g.drawRect(7,647-(floor-1)*120,left,96); g.drawRect(right,647-(floor-1)*120,left,96); g.fillRect(7,647-(floor-1)*120,left,96); g.fillRect(right,647-(floor-1)*120,left,96); try{ Thread.sleep(100); } catch (Exception e) {} } flag3=true; } public void run() { while(true) { int n=0; for(n=0;n<6;n++) //检测是否有需要处理的信息 { if(button.getStatusUp(n)!=0||button.getStatusDown(n)!=0||button.getFloorUp(n)!=0||button.getFloorDown(n)!=0) break; } if(n<6) //有需要处理的信息 { while(floor<7) //电梯向上 { flag2=true; //标记绘制向上箭头 boolean mark=false; //标记同一层楼即按了外面的按钮，有按了里面的按钮 if(button.getStatusUp(floor-1)==1) //处理外面的按钮 { button.setUpOrDown(1); //电梯当前状态为向上 flag=true; repaint(); while(true) { if(flag3) {flag3=false;break;} } button.setStatusUp(floor-1); button.setButtonUpBackground(floor-1); flag=false; if(button.getFloorUp(floor-1)!=0) mark=true; //同一层楼即按了外面的按钮，又按了里面的按钮 } if(button.getFloorUp(floor-1)!=0) //处理里面的按钮 { button.setUpOrDown(1); //电梯当前状态为向上 flag=true; button.setFloorUp(floor-1); button.setButtonNumBackground(floor-1); if(!mark) { repaint(); while(true) { if(flag3) {flag3=false;break;} } } flag=false; } try{ Thread.sleep(2*1000); } catch (Exception e) {} int m; for(m=floor;m<7;m++) { if(button.getStatusUp(m-1)!=0||button.getFloorUp(m-1)!=0||button.statusDown[m-1]!=0) break; } if(m<7) { floor++; if(floor>6) {floor=6;button.setFloor(floor);break;} else {button.setFloor(floor);repaint();} } else break; } while(floor>0) //电梯向下 { flag2=false; boolean mark=false; if(button.getStatusDown(floor-1)==-1) { button.setUpOrDown(-1); flag=true; repaint(); while(true) { if(flag3) {flag3=false;break;} } button.setStatusDown(floor-1); button.setButtonDownBackground(floor-1); flag=false; if(button.getFloorDown(floor-1)!=0) mark=true; //同一层楼即按了外面的按钮，有按了里面的按钮 } if(button.getFloorDown(floor-1)!=0) { button.setUpOrDown(-1); flag=true; button.setFloorDown(floor-1); button.setButtonNumBackground(floor-1); if(!mark) { repaint(); while(true) { if(flag3) {flag3=false;break;} } } flag=false; } try{ Thread.sleep(2*1000); } catch (Exception e) {} int m; for(m=floor;m>0;m--) { if(button.getStatusDown(m-1)!=0||button.getFloorDown(m-1)!=0||button.statusUp[m-1]!=0) break; } if(m>0) { floor--; if(floor<1) {floor=1;button.setFloor(floor);break;} else {button.setFloor(floor);repaint();} } else break; } } else { try{ Thread.sleep(1000); } catch(Exception e) {} } } } }