package cn.sxt.game;

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

/**
 * 飞机游戏的主窗口
 * @author 
 *Frame是窗体
 */
public class MyGameFrame  extends  Frame {
	
	Image   planeImg  = GameUtil.getImage("images/plane.png");
	Image   bg  = GameUtil.getImage("images/bg.jpg");
	
	Plane   plane = new Plane(planeImg,250,250);//设置飞机初始位置
	Shell[]   shells = new Shell[50];//炮弹
	
	Explode   bao ;
	Date  startTime = new Date();
	Date  endTime;
	int period;   //游戏持续的时间
	
	@Override
	public void paint(Graphics g) {		//自动被调用。  g相当于一只画笔
		Color   c =  g.getColor();
		g.drawImage(bg, 0, 0, null);
		/**
		 * g.drawLine(100,100,300,300)画线
		 * g.drawRect()矩形
		 * g.drawOval()圆
		 * g.fillRect()实心矩形
		 * g.setColor()颜色
		 * g.drawString()字符串
		 * 
		 */
		plane.drawSelf(g);  //画飞机
		
		//画出所有的炮弹
		for(int i=0;i<shells.length;i++){
			shells[i].draw(g);//画出所有的炮弹
			
			//飞机和炮弹的碰撞检测！！！turn 就相碰
			boolean  peng = shells[i].getRect().intersects(plane.getRect());
			if(peng){
				plane.live = false;
				if(bao ==null){//只生成一次爆炸过程
					bao  = new Explode(plane.x, plane.y);
					
					endTime = new Date();
					period = (int)((endTime.getTime()-startTime.getTime())/1000);
				}
				bao.draw(g);
			}
			
			//计时功能，给出提示
			if(!plane.live){
				g.setColor(Color.red);
				Font   f  =  new Font("宋体", Font.BOLD, 50);
				g.setFont(f);
				g.drawString("时间："+period+"秒", (int)plane.x, (int)plane.y);
			}
			
		}
		
		g.setColor(c);
	}
	
	
	//反复的重画窗口！
	class  PaintThread  extends  Thread  {
		@Override
		public void run() {
			//重写父类方法
			while(true){
				repaint();		//重画
				
				try {
					Thread.sleep(40);   	//1s=1000ms
				} catch (InterruptedException e) {
					e.printStackTrace();
				}		
			}
		}
		
	}
	
	//内部类。定义键盘监听的内部类。重写父类的两个方法
	class   KeyMonitor extends  KeyAdapter  {
		
		//按下按键
		@Override
		public void keyPressed(KeyEvent e) {
			plane.addDirection(e);
		}
		//抬起按键
		@Override
		public void keyReleased(KeyEvent e) {
			plane.minusDirection(e);
		}
		
		
	}
	
	
	/**
	 * 初始化窗口
	 */
	public  void  launchFrame(){
		this.setTitle("快乐风男_小游戏_飞机");//游戏标题
		this.setVisible(true);//窗口默认可见
		//设置窗口大小
		this.setSize(Constant.GAME_WIDTH	, Constant.GAME_HEIGHT);
		this.setLocation(300, 300);//设置位置
		
		this.addWindowListener(new WindowAdapter() {
			//匿名内部类，重写
			@Override
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
		
		new PaintThread().start();	//启动重画窗口的线程
		addKeyListener(new KeyMonitor());   //给窗口增加键盘的监听
		
		
		//初始化50个炮弹
		for(int i=0;i<shells.length;i++){
			shells[i] = new Shell();
		}
		
	}
	
	public static void main(String[] args) {
		MyGameFrame  f = new MyGameFrame();//创建窗口对象
		f.launchFrame();
	}
	
	//双缓存，解决闪烁问题
	private Image offScreenImage = null;
	 
	public void update(Graphics g) {
	    if(offScreenImage == null)
	        offScreenImage = this.createImage(Constant.GAME_WIDTH,Constant.GAME_HEIGHT);//这是游戏窗口的宽度和高度
	     
	    Graphics gOff = offScreenImage.getGraphics();
	    paint(gOff);
	    g.drawImage(offScreenImage, 0, 0, null);
	}
	
}