tank.java

java小项目,坦克大战,学习的好资料 eclipse下可运行

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class Tank {
	public static final int XSPEED = 3;
	public static final int YSPEED = 3;
	public static final int WIDTH = 30;
	public static final int HEIGHT = 30;
	
	private int x,y;
	private int oldX,oldY;
	private int life = 100;
	
	BloodBar bb = new BloodBar();
	
	private boolean bL = false,bU = false,bR = false,bD = false;
	private boolean live = true;
	private boolean good;
	private int step = r.nextInt(15) + 3;	//小于15随机数，为不使step为0，所以在后面加了3
	
	TankClient tc;
	
	private static Random r = new Random();
	
	enum Direction {L,LU,U,RU,R,RD,D,LD,STOP}
	private Direction dir = Direction.STOP;
	private Direction ptdir = Direction.D;
	
	public Tank(int x, int y, boolean good) {
		this.x = x;
		this.y = y;
		this.good = good;
	}
	
	public Tank(int x, int y, boolean good, Direction dir,TankClient tc) {
		this(x,y,good);
		this.tc = tc;
		this.dir = dir;
	
	}
	
	public void draw(Graphics g) {
		if(!tc.mh.isLife()) {
			tc.myTank.setLive(false);
			tc.myTank.setLife(0);
		}
		if(!live) {
			if(!good) {
				tc.enemytanks.remove(this); 
			} return;
		} 
		Color c = g.getColor();
		if(good) 
		g.setColor(Color.red);
		else g.setColor(Color.DARK_GRAY);
		g.fillOval(x, y,WIDTH, HEIGHT);
		g.setColor(c);
		if(good) bb.draw(g);
		
		switch(ptdir) {
		case L:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x, y + Tank.HEIGHT/2);
			break;
		case LU:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x, y);
			break;
		case U:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x + Tank.WIDTH/2, y);
			break;
		case RU:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x + Tank.WIDTH, y);
			break;
		case R:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x + Tank.WIDTH, y + Tank.HEIGHT/2);
			break;
		case RD:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x + Tank.WIDTH, y + Tank.HEIGHT);
			break;
		case D:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x + Tank.WIDTH/2, y + Tank.HEIGHT);
			break;
		case LD:
			g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2,x, y + Tank.HEIGHT);
			break;
		}
		
		move();
	}
	
	public void stay() {
		x = this.oldX;
		y = this.oldY;
	}
	
	void move() {
		
		this.oldX = x;
		this.oldY = y;
		
		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;
		case STOP:
			break;
		}
		if(this.dir != Direction.STOP) {
			this.ptdir = this.dir;
		}
		
		if(x < 5) x = 5;
		if(y < 25) y = 25;
		if(x + Tank.WIDTH >= TankClient.GAME_WIDTH) x = TankClient.GAME_WIDTH - Tank.WIDTH;
		if(y + Tank.HEIGHT >= TankClient.GAME_HEIGHT) y = TankClient.GAME_HEIGHT - Tank.HEIGHT;
		
		if(!good) {
			Direction[] dirs = Direction.values();	//将值转换为数组
			if(step == 0) {
				step = r.nextInt(15) + 3;
				int rn = r.nextInt(dirs.length);
				dir = dirs[rn];						//给方向赋随机值
			}
			step --;			//为防止step减为0，加入了上面的if
			
			if(r.nextInt(40) > 36) { 
				this.fire();
			}
		}
	}
	
	public void keyPressed(KeyEvent e) {
		int  key = e.getKeyCode();
		switch(key) {
		case KeyEvent.VK_LEFT :
			bL = true;
			break;
		case KeyEvent.VK_UP :
			bU = true;
			break;
		case KeyEvent.VK_RIGHT :
			bR = true;
			break;
		case KeyEvent.VK_DOWN :
			bD = true;
			break;
		}
		locateDirection();
	}
	
	void locateDirection() {
		if(bL && !bU && !bR && !bD) dir = Direction.L;
		else if(bL && bU && !bR && !bD) dir = Direction.LU;
		else if(!bL && bU && !bR && !bD) dir = Direction.U;
		else if(!bL && bU && bR && !bD) dir = Direction.RU;
		else if(!bL && !bU && bR && !bD) dir = Direction.R;
		else if(!bL && !bU && bR && bD) dir = Direction.RD;
		else if(!bL && !bU && !bR && bD) dir = Direction.D;
		else if(bL && !bU && !bR && bD) dir = Direction.LD;
		else if(!bL && !bU && !bR && !bD) dir = Direction.STOP;
	}

	public void keyReleased(KeyEvent e) {
		int  key = e.getKeyCode();
		switch(key) {
		case KeyEvent.VK_F1:
			if(tc.enemytanks.size() == 0) {
				for(int i=0;i<9;i++) {
					tc.enemytanks.add(new Tank(50 + 50*(i + 3),30 + 30*(i + 4),false,Tank.Direction.L,tc));
				}
			}
			break;
		case KeyEvent.VK_F2:
				if(!this.live)
					this.live = true;
					this.life = 100;
			break;
		case KeyEvent.VK_S:
			superFire();
			break;
		case KeyEvent.VK_CONTROL:
			fire();
			break;
		case KeyEvent.VK_LEFT :
			bL = false;
			break;
		case KeyEvent.VK_UP :
			bU = false;
			break;
		case KeyEvent.VK_RIGHT :
			bR = false;
			break;
		case KeyEvent.VK_DOWN :
			bD = false;
			break;
		}
		locateDirection();
	}
	
	public Missile fire() {
		if(!live) return null;
		int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2;
		int y = this.y + Tank.HEIGHT/2 - Missile.HEIGHT/2;
		Missile m = new Missile(x,y,good,ptdir,this.tc);
		tc.missiles.add(m);
		return m;
	}
	
	public Missile fire(Direction dir) {
		if(!live) return null;
		int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2;
		int y = this.y + Tank.HEIGHT/2 - Missile.HEIGHT/2;
		Missile m = new Missile(x,y,good,dir,this.tc);
		tc.missiles.add(m);
		return m;
	}
	
	public void superFire() {
		Direction[] dirs = Direction.values();
		for(int i=0;i<8;i++) {
			fire(dirs[i]);
		}
	}
	
	public Rectangle getRect() {
		return new Rectangle(x,y,WIDTH,HEIGHT);
	}

	public boolean isLive() {
		return live;
	}

	public void setLive(boolean live) {
		this.live = live;
	}

	public boolean isGood() {
		return good;
	}
	
	public void collidesWithWall(Wall w) {
		if(this.getRect().intersects(w.getRect())) {
			this.stay();
		}
	}
	
	public void collidesWithTank(java.util.List<Tank> tanks) {
		for(int i=0;i<tanks.size();i++) {
			Tank t = tanks.get(i);
			if(this != t) {
				if(this.live && t.isLive() && this.getRect().intersects(t.getRect())) {
					this.stay();	
				}	
			}
		}
	}
	
	public void collidesWithProtectWall(ProtectWall pw) {
		if(this.getRect().intersects(pw.getRect())) {
			this.stay();
		}
	}
	
	public void collidesWithMyHome(MyHome mh) {
		if(this.getRect().intersects(mh.getRect())) {
			this.stay();
		}
	}
	
	public int getLife() {
		return life;
	}

	public void setLife(int life) {
		this.life = life;
	}
	
	private class BloodBar {
		public void draw(Graphics g) {
			Color c = g.getColor();
			g.setColor(Color.red);
			g.drawRect(x, y - 15, WIDTH, 10);
			int w = WIDTH * life/100;
			g.fillRect(x, y - 15, w, 10);
			g.setColor(c);
		}
	}
	
	public boolean eat(Blood b) {
		if(this.live && b.isLive() && this.getRect().intersects(b.getRect())) {
			this.life = 100;
			b.setLive(false);
			return true;
		}
		return false;
	}

	public void setGood(boolean good) {
		this.good = good;
	}
}