/**
?*?@author?楊一峰??09030228?2011.5.17
?*/
import?java.applet.*;
import?java.awt.*;
import?java.awt.event.*;

public?class?lift?extends?applet?implements?Runnable?ActionListener?{
	Thread?thread;
	private?static?final?int?UP?=?0;
	private?static?final?int?DOWN?=?1;
	private?static?final?int?OPEN?=?2;
	private?static?final?int?CLOSE?=?3;
	private?static?final?int?WAIT?=?4;

	private?boolean?F1?=?false;
	private?boolean?F2?=?false;
	private?boolean?F3?=?false;
	private?boolean?F4?=?false;
	private?boolean?F5?=?false;
	private?boolean?target?=?false;
	private?boolean?painted?=?false;
	
	private?int?state?=?WAIT;
	private?int?t?currentfloor;
	private?int?x?y?width?height?openxblock;

	Image?BufferImage;
	Graphics?BufferGraphics;
	Button?f1?f2?f3?f4?f5;
	Label?lab;

	public?void?init（）?{
		setSize（300?500）;
		setLayout（null）;
		lab?=?new?Label（“0“）;
		
		f1?=?new?Button（“1“）;
		f2?=?new?Button（“2“）;
		f3?=?new?Button（“3“）;
		f4?=?new?Button（“4“）;
		f5?=?new?Button（“5“）;
		
		lab.setBounds（120?160?20?20）;
		f1.setBounds（200?160?30?30）;
		f2.setBounds（200?200?30?30）;
		f3.setBounds（200?240?30?30）;
		f4.setBounds（200?280?30?30）;
		f5.setBounds（200?320?30?30）;

		BufferImage?=?createImage（getSize（）.widthgetSize（）.height）;
		BufferGraphics?=?BufferImage.getGraphics（）;
		
		currentfloor?=?0;
		openx?=?0;
		t?=?0;
		x?=?20;
		y?=?10;
		width?=?80;
		height?=?400;
		block=20;

		f1.addActionListener（this）;
		f2.addActionListener（this）;
		f3.addActionListener（this）;
		f4.addActionListener（this）;
		f5.addActionListener（this）;

		add（lab）;
		add（f1）;
		add（f2）;
		add（f3）;
		add（f4）;
		add（f5）;
	}

	public?void?paint（Graphics?g）?{
		BufferGraphics.setColor（Color.white）;
		BufferGraphics.fillRect（0?0?getSize（）.widthgetSize（）.height）;
		BufferGraphics.setColor（Color.black）;
		BufferGraphics.fillRect（x?y?+?9?width?+?1?height?+?3）;
		BufferGraphics.setColor（Color.white）;
		BufferGraphics.drawRect（x?+?1+block?y?+?height?/?5?*?4?-?t?+?10+block?（width?-?2）?/?2?-?openx-block
				height?/?5-block）;
		BufferGraphics.fillRect（x?+?1?+?（width?-?2）?/?2?-?openx
				y?+?height?/?5?*?4?-?t?+?10+block?openx?*?2?height?/?5?+?1-block）;
		BufferGraphics.drawRect（x?+?1?+?（width?-?2）?/?2?+?openx
				y?+?height?/?5?*?4?-?t?+?10+block?（width?-?2）?/?2?-?openx-block
				height?/?5-block）;
		

		if（state==UP）
			BufferGraphics.setColor（Color.red）;
		else
			BufferGraphics.setColor（Color.black）;
		BufferGraphics.drawString（“△“120?200）;
		if（state==DOWN）
			BufferGraphics.setColor（Color.red）;
		else
			BufferGraphics.setColor（Color.black）;			
		BufferGraphics.drawString（“▽“120?220）;
		lab.setText（String.valueOf（currentfloor））;
		painted?=?true;
		g.drawImage（BufferImage00this）;
	}
	public?void?update（Graphics?g）{
		paint（g）;
	}
	public?void?control（）?{
		if?（state?==?UP）?{
			if?（t?==?y?+?height?/?5?*?4）
				t?=?y?+?height?/?5?*?4;