missile.java

坦克大战 有关卡 有显示 有大招 等等 功能

package leo.tank;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 用于构建子弹
 * @author 黄思志 030402129
 *
 */
public class Missile {
	public static final int XSPEED =20,YSPEED = 20;
	public static final int WIDTH = 10,HEIGHT = 10;
	int x,y;
	Direction dir;
	
	private boolean live = true;
	private boolean good ;
	
	private TankWar tw;
	
	private static Toolkit tk = Toolkit.getDefaultToolkit();
	
	private static Image[] missileImages = null;
	
	/**
	 * 建立子弹图片的映射字符
	 * 用字符索引不同的子弹图片
	 */
	private static Map<String, Image> imgs = new HashMap<String, Image>();
	
	/**
	 * 静态函数
	 * 载入内存后首先执行的函数
	 * 可以用来初始化变量和函数
	 * 或执行一些必须在其他函数外执行的方法函数
	 * 适合做初始化工作
	 */
	static {
		missileImages = new Image[]{
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileL.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileLU.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileU.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileRU.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileR.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileRD.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileD.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileLD.gif"))
		};
		
		imgs.put("L", missileImages[0]);
		imgs.put("LU", missileImages[1]);
		imgs.put("U", missileImages[2]);
		imgs.put("RU", missileImages[3]);
		imgs.put("R", missileImages[4]);
		imgs.put("RD", missileImages[5]);
		imgs.put("D", missileImages[6]);
		imgs.put("LD", missileImages[7]);
		
	}

	/**
	 * 子弹的构造函数
	 * @param x	子弹左上角坐标x
	 * @param y	子弹左上角坐标y
	 * @param dir	传入坦克炮筒方向,指定为子弹飞行方向
	 */
	public Missile(int x, int y, Direction dir) {
		this.x = x;
		this.y = y;
		this.dir = dir;
	}
	/**
	 * 重载子弹的构造函数
	 * @param x	子弹左上角坐标x
	 * @param y	子弹左上角坐标y
	 * @param good	标记敌我子弹,true为我方发出
	 * @param dir	传入坦克炮筒方向,指定为子弹飞行方向
	 * @param tc	传入main所在类的引用
	 */
	public Missile(int x, int y, boolean good, Direction dir,TankWar tw) {
		this(x,y,dir);
		this.tw = tw;
		this.good = good;
	}
	/**
	 * 自绘方法
	 * @param g
	 */
	public void draw(Graphics g) {
		if(!live){
			tw.m.remove(this);
			return;
		}

		
		if(!good) {
			Color c = g.getColor();
			g.setColor(Color.pink);
			g.fillOval(x, y, WIDTH, HEIGHT);
			g.setColor(c);
		}
		else
		{

		switch(dir) {
		case L:
			g.drawImage(imgs.get("L"), x, y, null);
			break;
		case LU:
			g.drawImage(imgs.get("LU"), x, y, null);
			break;
		case U:
			g.drawImage(imgs.get("U"), x, y, null);
			break;
		case RU:
			g.drawImage(imgs.get("RU"), x, y, null);
			break;
		case R:
			g.drawImage(imgs.get("R"), x, y, null);
			break;
		case RD:
			g.drawImage(imgs.get("RD"), x, y, null);
			break;
		case D:
			g.drawImage(imgs.get("D"), x, y, null);
			break;
		case LD:
			g.drawImage(imgs.get("LD"), x, y, null);
			break;
		case STOP:
			break;
		}
		}
		move();
	}
	/**
	 * 运动方法
	 *
	 */
	public void move() {

		switch(dir) {
		case L:
			x -= XSPEED;
			break;
		case LU:
			x -= XSPEED;
			y -= YSPEED;
			break;
		case U:
			y -= YSPEED;
			break;
		case RU:
			x += XSPEED;
			y -= YSPEED;
			break;
		case R:
			x += XSPEED;
			break;
		case RD:
			x += XSPEED;
			y += YSPEED;
			break;
		case D:
			y += YSPEED;
			break;
		case LD:
			x -= XSPEED;
			y += YSPEED;
			break;
		}
		
		if(x < 0 || y < 0 || x > TankWar.vx || y > TankWar.vy) {
			live = false;
		}
		this.hitTanks(tw.emTk);
		this.hitTank(tw.myTank);
		this.hitWall(tw.w1);
		this.hitWall(tw.w2);
	}

	/**
	 * 获取是否生存的值
	 * @return
	 */
	public boolean isLive() {
		return live;
	}
	/**
	 * 获取外接矩形
	 * @return
	 */
	public Rectangle getRect() {
		return new Rectangle(x, y, WIDTH,HEIGHT);
	}
	
	/**
	 * 与坦克的碰撞方法
	 * @param t
	 * @return
	 */
	public boolean hitTank(Tank t) {
		if(this.getRect().intersects(t.getRect()) && this.live && t.isLive() && this.good != t.isGood()) {
			if(t.isGood()) {
				t.setLife(t.getLife()-20);
				if(t.getLife() <= 0){
					t.setLive(false);
					if(t.getLiveCount() == 0) 
						tw.gameOver = true;
				}
			} else {
				tw.score += 10*((tw.gameLevel+1)*(tw.gameThrough*2+1)+1);
				if(tw.score/5000*(tw.gameLevel+1)*(tw.gameThrough+1) > 
				(tw.score-10*((tw.gameLevel+1)*(tw.gameThrough*2+1)+1))/5000*(tw.gameLevel+1)*(tw.gameThrough+1)){
					int liveCount = tw.myTank.getLiveCount();
					liveCount++;
					tw.myTank.setLiveCount(liveCount);
				}
				t.setLive(false);
			}
			live = false;
			Explode e = new Explode(x,y,tw);
			tw.ep.add(e);
			return true;
		}
		return false;
		
	}
	
	/**
	 * 与坦克数组里所有坦克碰撞的方法
	 * @param tanks
	 * @return
	 */
	public boolean hitTanks(List<Tank> tanks) {
		for(int i=0;i<tanks.size();i++)	{
			if(hitTank(tanks.get(i))) {
				return true;
			}
		}
		return false;
	}
	
	/**
	 * 与墙碰撞的方法
	 * @param w
	 * @return
	 */
	public boolean hitWall(Wall w) {
		if(this.live && this.getRect().intersects(w.getRect()))	{
			this.live = false;
			Explode e = new Explode(x,y,tw);
			tw.ep.add(e);
			return true;
		}
		return false;
	}
}