tank.java

自己编写的一个简单的tank游戏

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

public class Tank {

	public static final int TWIDTH=30;
	public static  final int THEIGHT=30;
	public static  final int XSPEED=5;
	public static final int YSPEED=5;
	private boolean KL=false,KU=false,KR=false,KD=false;
	int x,y;
	enum Direction {L,LU,U,RU,R,RD,D,LD,STOP}
	Direction dir=Direction.STOP;
	Direction ptdir=Direction.D;
	TankGameFrame tgf;
	
	
	public Tank(int x,int y)
	{
		this.x=x;
		this.y=y;
	}
	public Tank(int x,int y,TankGameFrame tgf)
	{
		this.x=x;
		this.y=y;
		this.tgf=tgf;
	}
	public void draw(Graphics g)
	{
		Color c=g.getColor();
		g.setColor(Color.red);
		g.fill3DRect(x,y,TWIDTH,THEIGHT,true);
		g.setColor(c);
		
		//画炮筒
		switch(ptdir)
		{
			case L:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x-15,y+THEIGHT/2);
			break;
			case R:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x+TWIDTH+15,y+THEIGHT/2);
			break;
			case U:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x+TWIDTH/2,y-15);
			break;
			case D:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x+TWIDTH/2,y+THEIGHT+15);
			break;
			case LU:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x-15,y-15);
			break;
			case LD:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x-15,y+THEIGHT+15);
			break;
			case RU:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x+TWIDTH+15,y-15);
			break;
			case RD:
			g.drawLine(x+TWIDTH/2,y+THEIGHT/2,x+TWIDTH+15,y+THEIGHT+15);
			break;
		}
		move();

	}
	
	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;
			case STOP:
			break;		
		}

		if(this.dir!=Direction.STOP)
		{
			this.ptdir=this.dir;
		}	
		if(x<0)	
		{
			x=0;
		}	
		if(y<0){y=0;}
		if(x>tgf.GAME_W-TWIDTH){x=tgf.GAME_W-TWIDTH;}
		if(y>tgf.GAME_H-THEIGHT){y=tgf.GAME_H-THEIGHT;}
	}

	void locateDirection()
	{
		if(KL&&!KU&&!KR&&!KD)dir=Direction.L;
		else if(KL&&KU&&!KR&&!KD)dir=Direction.LU;
		else if(!KL&&KU&&!KR&&!KD)dir=Direction.U;
		else if(!KL&&KU&&KR&&!KD)dir=Direction.RU;
		else if(!KL&&!KU&&KR&&!KD)dir=Direction.R;
		else if(!KL&&!KU&&KR&&KD)dir=Direction.RD;
		else if(!KL&&!KU&&!KR&&KD)dir=Direction.D;
		else if(KL&&!KU&&!KR&&KD)dir=Direction.LD;
		else if(!KL&&!KU&&!KR&&!KD)dir=Direction.STOP;
	}

	public void keyPressed(KeyEvent e)
	{	int key=e.getKeyCode();
		switch(key)
		{
			case 37:
			KL=true;
			break;
			case 38:
			KU=true;
			break;
			case 39:
			KR=true;
			break;
			case 40:
			KD=true;
			break;
		}
		locateDirection();
	}
	public void keyReleased(KeyEvent e)
	{
		int key=e.getKeyCode();
		switch(key)
		{
			case 32:
			fire();
			break;
			case 37:
			KL=false;
			break;
			case 38:
			KU=false;
			break;
			case 39:
			KR=false;
			break;
			case 40:
			KD=false;
			break;
		}
		locateDirection();
	}

	public Ball fire()
	{
		int bx=x+(TWIDTH-Ball.BWIDTH)/2;
		int by=y+(THEIGHT-Ball.BHEIGHT)/2;
		Ball ball=new Ball(bx,by,ptdir,this.tgf);
		tgf.balls.add(ball);
		return ball;
		
	}
}