missile.java

一个坦克游戏的源代码

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.awt.*;

public class Missile {
	
	public static final int XSPEED = 10;
	public static final int YSPEED = 10;
	
	public static final int WIDTH = 10;
	public static final int HEIGHT = 10;
	
	int x, y;
	private boolean live = true;
	private boolean good;
	
	Direction dir;
	private TankClient tc;
	
	private static Toolkit tk = Toolkit.getDefaultToolkit();
	private static Image[] missileImages = null;
	private static Map<String,Image> imgs = new HashMap<String,Image>();
	static
	{
		missileImages = new Image[]
		{
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileD.gif")),
		        tk.getImage(Tank.class.getClassLoader().getResource("images/missileL.gif")),
		        tk.getImage(Tank.class.getClassLoader().getResource("images/missileLD.gif")),
		        tk.getImage(Tank.class.getClassLoader().getResource("images/missileLU.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/missileRU.gif")),
		        tk.getImage(Tank.class.getClassLoader().getResource("images/missileU.gif")),
		};
		imgs.put("D", missileImages[0]);
		imgs.put("L", missileImages[1]);
		imgs.put("LD", missileImages[2]);
		imgs.put("LU", missileImages[3]);
		imgs.put("R", missileImages[4]);
		imgs.put("RD", missileImages[5]);
		imgs.put("RU", missileImages[6]);
		imgs.put("U", missileImages[7]);
	}
	
	public Missile( int x, int y,Direction dir) {
		this.dir = dir;
		this.x = x;
		this.y = y;
	}
	public Missile( int x, int y,boolean good, Direction dir, TankClient tc) {
		this(x,y,dir);
		this.good = good;
		this.tc = tc;
	}
	
    public void draw(Graphics g)
    {
    	if(!this.live)
    	{
    		tc.missiles.remove(this);
    		return;
    	}
    	Color c = g.getColor();
    	if(good)
    	{
    	    g.setColor(Color.RED);
    	}
    	else
    	{
    		g.setColor(Color.BLACK);
    	}
    	switch (dir) {
		case U:
			g.drawImage(imgs.get("U"), x, y, null);
			break;
		case D:
			g.drawImage(imgs.get("D"), x, y, null);
			break;
		case L:
			g.drawImage(imgs.get("L"), x, y, null);
			break;
		case R:
			g.drawImage(imgs.get("R"), x, y, null);
			break;
		case LU:
			g.drawImage(imgs.get("LU"), x, y, null);
			break;
		case LD:
			g.drawImage(imgs.get("LD"), x, y, null);
			break;
		case RU:
			g.drawImage(imgs.get("RU"), x, y, null);
			break;
		case RD:
			g.drawImage(imgs.get("RD"), x, y, null);
			break;
		}
    	g.setColor(c);
    	move();
    }
    public void move() {
		switch (dir) {
		case U:
			y -= YSPEED;
			break;
		case D:
			y += YSPEED;
			break;
		case L:
			x -= XSPEED;
			break;
		case R:
			x += XSPEED;
			break;
		case LU:
			x -= XSPEED;
			y -= YSPEED;
			break;
		case LD:
			x -= XSPEED;
			y += YSPEED;
			break;
		case RU:
			x += XSPEED;
			y -= YSPEED;
			break;
		case RD:
			x += XSPEED;
			y += YSPEED;
			break;
		}
		if(x < 0 || y < 0 || x > TankClient.GAME_WIDTH || y > TankClient.GAME_HEIGHT)
		{
			live = false;
		}
	}
    public boolean isLive() {
		return live;
	}
    
    public Rectangle getRect()
    {
    	return new Rectangle(x,y,WIDTH,HEIGHT);
    }
	
    public boolean hitTank(Tank t)
    {
    	if(this.live && this.getRect().intersects(t.getRect()) && t.isLive() && this.good != t.isGood())
    	{
    		if(t.isGood())
    		{
    			t.setLife(t.getLife() - 20);
    			if(t.getLife() <= 0) 
    			{
    				t.setLive(false);
    				Explode e = new Explode(x,y,tc);
    	    		tc.explodes.add(e);
    			}
    		}
    		else
    		{
    			t.setLive(false);
    			Explode e = new Explode(x,y,tc);
        		tc.explodes.add(e);
    		}
    		this.live = false;
    		
    		return true;
    	}
    	return false;
    }
    public boolean hitTanks(List<Tank> t)
    {
    	for(int i=0; i<t.size(); i++)
    	{
    		if(hitTank(t.get(i)))
    			return true;
    	}
    	return false;
    }
    public boolean hitWall(Wall w)
    {
    	if(this.live && this.getRect().intersects(w.getRect()))
    	{
    		live = false;
    		return true;
    	}
    	return false;
    }
}