missile.java

一个坦克游戏程序

package com.tankwar;

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;

import com.tankwar.Tank;
import com.tankwar.TankClient;
import com.tankwar.Wall;



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;
	
	private boolean live = true;
	private boolean good;

	
	private int x,y;

	private TankClient tc;
	
	Direction dir;
	
	
	private static Toolkit tk = Toolkit.getDefaultToolkit();
	
	private static Image[] missileImages =null;
	static Map<String ,Image> imgs  = new HashMap<String ,Image>();
	
	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/missileLD.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileR.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileRU.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileRD.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileU.gif")),
				tk.getImage(Tank.class.getClassLoader().getResource("images/missileD.gif"))		
		};
		imgs.put("L", missileImages[0]);
		imgs.put("LU", missileImages[1]);
		imgs.put("LD", missileImages[2]);
		imgs.put("R", missileImages[3]);
		imgs.put("RU", missileImages[4]);
		imgs.put("RD",missileImages[5]);
		imgs.put("U", missileImages[6]);
		imgs.put("D",missileImages[7]);
		
	}
	
	
	
	
	public Missile(int x, int y, Direction dir) {
		this.x = x;
		this.y = y;
		this.dir = dir;
	}
	
	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(!live) {
			tc.missiles.remove(this);
			return;
		}
		
		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 LD:
			g.drawImage(imgs.get("LD"), x,y,  null);
			break;
		case R:
			g.drawImage(imgs.get("R"), 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;
		case D:
			g.drawImage(imgs.get("D"), x,y,  null);
			break;
		case U:
			g.drawImage(imgs.get("U"), x,y,  null);
			break;
		}
		
		move();
	}

	private void move() {
		switch(dir) {
		case L: 
			x-=XSPEED;
			break;
		case LU: 
			x-=XSPEED;
			y-=YSPEED;
			break;
		case LD: 
			x-=XSPEED;
			y+=YSPEED;
			break;
		case R: 
			x+=XSPEED;
			break;
		case RU: 
			x+=XSPEED;
			y-=YSPEED;
			break;
		case RD: 
			x+=XSPEED;
			y+=YSPEED;
			break;
		case D: 	
			y+=YSPEED;
			break;
		case U: 
			y-=YSPEED;
			break;
		case STOP:
			break;
		}
		if(x<0 || y<0 || x > TankClient.GAME_WIDTH || y > TankClient.GAME_HEIGTH) {
			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);
				}
			}else {
				t.setLive(false);				
			}			
			this.live = false;
			Explode e = new Explode(x,y,tc);
			tc.explodes.add(e);
			return true ;
		}
		
		return false;	
	}
	
	public boolean hitTanks(List<Tank> tanks){
		for(int i=0;i<tanks.size();i++) {
			if(hitTank(tanks.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;
	}

}