mytank.java

J2SE坦克大战源码 分为24个版本

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;


public class MyTank {
	int x,y;
	static final int XSPEED = 1;
	static final int YSPEED = 1;
	private boolean bU = false,bR = false,bD = false,bL = false;
	
	enum Direction {U,RU,R,RD,D,LD,L,LU,STOP};
	
	private Direction dir =Direction.STOP ;
	
	public MyTank(int x, int y) {
		this.x = x;
		this.y = y;
	} 
	
	public void draw(Graphics g){		
		Color c = g.getColor();
		g.setColor(Color.RED);
		g.fillOval(x, y, 30, 30);
		g.setColor(c);		
		
		move();
	}

	public void keypressed(KeyEvent e){
		int key = e.getKeyCode();
		switch(key){
		case KeyEvent.VK_UP:
			bU = true;
		break;
		case KeyEvent.VK_RIGHT:
			bR = true;
		break;
		case KeyEvent.VK_DOWN:
			bD = true;
		break;
		case KeyEvent.VK_LEFT:
			bL = true;
		break;
		}
		Direct();
	}
	
	public void Direct() {
		if(!bU && !bR && !bD && !bL) dir = Direction.STOP;
		else if(bU && bR && bD && bL) dir = Direction.U;
		else if(!bU && !bR && bD && !bL) dir = Direction.D;
		else if(!bU && !bR && !bD && bL) dir = Direction.L;
		else if(!bU && bR && !bD && !bL) dir = Direction.R;
		else if(bU && !bR && !bD && bL) dir = Direction.LU;
		else if(!bU && !bR && bD && bL) dir = Direction.LD;
		else if(!bU && bR && bD && !bL) dir = Direction.RD;
		else if(bU && bR && !bD && !bL) dir = Direction.RU;
	}
	
	public void move(){	
		switch(dir){
		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 L:
			x -= XSPEED;
		break;
		case LU:
			x -= XSPEED;
			y -= YSPEED;
		break;
		case STOP:		
		break;
		}
		
	}
	
	

}