import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;

/**打字游戏框架类
 * @author Mr.xiao
 *
 */
public class TypeFrame extends Frame {

	public long start,end;//游戏开始与刷新时的时间，用于统计打字速度
	public int typecount=0;//打字个数
	public Image paintplace = null;  //绘制其他图形的底图
	public static final int GAME_HEIGHT = 666;// 游戏高度
	public static final int GAME_WIDTH = 956; // 游戏宽度
	public ArrayList<Emery> apples = new ArrayList<>();  //放置所有存活的苹果的容器
	public static int score = 0;    //分数
	public Image bg = Toolkit.getDefaultToolkit().getImage("bg.jpg");//背景图片
	
	TypeFrame tf=this;  //得到当前对象以便后面使用
	
	public TypeFrame() {
		setTitle("拯救苹果");
		start=System.currentTimeMillis();  //获取系统当前的毫秒
		setVisible(true);
		setBounds(200, 20, GAME_WIDTH, GAME_HEIGHT);//设置界面

		addWindowListener(new WindowAdapter() {  //设置关闭监听
			public void windowClosing(WindowEvent e) {
				dispose();
			}
		});

		addKeyListener(new KeyAdapter() {
			public void keyReleased(KeyEvent e) {
				
				for (int i = 0; i < apples.size(); ) {
					if (e.getKeyChar() == apples.get(i).c) {//如果与输入的字母一致，则移除苹果并加10分
						apples.get(i).alive = false;
						apples.remove(i);
						score+=10;
						typecount++;
						apples.add(new Emery(tf));
					}
					i++;
				}
			}
		});

		for (int i = 0; i < 10; i++) {
			apples.add(new Emery(this));
		}
		new Thread(new PaintThread()).start();
	}

	public void update(Graphics g) {
		if (paintplace == null) {
			paintplace = createImage(GAME_WIDTH, GAME_HEIGHT);
		}
		Graphics gback = paintplace.getGraphics(); // 得到背景图片画笔
		Color c = gback.getColor();
		gback.setColor(Color.gray);
		gback.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
		gback.setColor(c);
		
		gback.drawImage(bg, 0, 0, null);  //绘制背景图片
		gback.setColor(Color.black);
		gback.setFont(new Font("Dialog", 5, 25));
		gback.drawString("Score:"+score, 30, 70);//绘制分数
		end=System.currentTimeMillis();   //获取系统此刻的毫秒数
		gback.drawString("打字速度:"+(typecount*60000/(end-start))+"字/分", 30, 100);
		paint(gback);

		g.drawImage(paintplace, 0, 0, null);    //绘制画板

	}

	public void paint(Graphics g) {
		for (int i = 0; i < apples.size(); ) {
			if(apples.get(i).y<=GAME_HEIGHT+20){   //如果苹果还在界内，则正常绘制
			apples.get(i).draw(g);
			i++;
			}
			else{       //否则移除出容器，扣5分，并且加入新的苹果
				apples.get(i).alive = false;
				apples.remove(i);
				score-=5;
				apples.add(new Emery(tf));
			}
		}

	}

	class PaintThread implements Runnable {

		@Override
		public void run() {
			Emery emery = null;
			while (true) {           //控制苹果坐标改变
				for (int i = 0; i < apples.size(); i++) {
					emery = apples.get(i);
					emery.y += emery.YSPEED;
					if (emery.turnleft) {
						emery.x -= emery.XSPEED;
						if (Math.abs((emery.center - emery.x)) > 20) {
							emery.turnleft = false;
						}
					} else {
						emery.x += emery.XSPEED;
						if (Math.abs((emery.center - emery.x)) > 20) {
							emery.turnleft = true;
						}
					}
				}
				repaint();   //重绘整个界面
				try {
					Thread.sleep(40);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}

	}
	
	public static void main(String[] args) {
		TypeFrame tf = new TypeFrame();
	}
}