diff --git a/src/com/msb/Bullet.java b/src/com/msb/Bullet.java
index f1460ec..314d003 100644
--- a/src/com/msb/Bullet.java
+++ b/src/com/msb/Bullet.java
@@ -18,6 +18,7 @@ public class Bullet {
     private boolean live = true;
     private GroupEnum group = GroupEnum.BAD;
     private TankFrame tankFrame;
+//    private Rectangle rectangle;
 
     public Bullet(int x, int y, DirEnum dir, GroupEnum group, TankFrame tankFrame) {
         this.x = x;
@@ -25,6 +26,7 @@ public class Bullet {
         this.dir = dir;
         this.group = group;
         this.tankFrame = tankFrame;
+//        this.rectangle = new Rectangle(x, y, WIDTH, HEIGHT);
     }
 
     public void paint(Graphics g) {
@@ -80,6 +82,7 @@ public class Bullet {
         Rectangle bullteRec = new Rectangle(this.x, this.y, WIDTH, HEIGHT);
         Rectangle tankRec = new Rectangle(tank.getX(), tank.getY(), Tank.WIDTH, Tank.HEIGHT);
         if(bullteRec.intersects(tankRec)) {
+//        if(this.rectangle.intersects(tank.getRectangle())) {
             this.die();
             tank.die();
         }
diff --git a/src/com/msb/Tank.java b/src/com/msb/Tank.java
index 269bffa..4084611 100644
--- a/src/com/msb/Tank.java
+++ b/src/com/msb/Tank.java
@@ -22,6 +22,7 @@ public class Tank {
     private boolean live = true;
     private Random random = new Random();
     private GroupEnum group = GroupEnum.BAD;
+//    private Rectangle rectangle;
 
     public Tank(int x, int y, DirEnum dir, GroupEnum group, TankFrame tankFrame) {
         this.x = x;
@@ -29,6 +30,7 @@ public class Tank {
         this.dir = dir;
         this.group = group;
         this.tankFrame = tankFrame;
+//        this.rectangle = new Rectangle(x, y, WIDTH, HEIGHT);
     }
 
     public void paint(Graphics g) {
@@ -52,6 +54,10 @@ public class Tank {
         this.dir = dir;
     }
 
+    public DirEnum getDir() {
+        return dir;
+    }
+
     public void moving() {
 
         if( ! move) return;
@@ -64,8 +70,17 @@ public class Tank {
             default: break;
         }
 
-        if(random.nextInt(10) > 8) this.fire();
+//        this.boundsCheck();
+
+        //敌方坦克随机发射炮弹
+        if(this.group == GroupEnum.BAD && random.nextInt(100) > 95) this.fire();
+        //敌方坦克随机改变方向进行
+        if(this.group == GroupEnum.BAD && random.nextInt(100) > 95) this.randomDir();
+
+    }
 
+    public void randomDir() {
+        this.dir = DirEnum.values()[random.nextInt(4)];
     }
 
     public void setMove(boolean move) {
@@ -79,6 +94,12 @@ public class Tank {
         tankFrame.bullets.add(new Bullet(bX, bY, this.dir, this.group, tankFrame));
     }
 
+    public void boundsCheck() {
+        if(x<0 || y<0 || x>TankFrame.GAME_WIDTH || y>TankFrame.GAME_HEIGHT) {
+            this.setDir(DirEnum.valueOf(random.nextInt(30)%4));
+        }
+    }
+
     public int getX() {
         return x;
     }
@@ -95,4 +116,9 @@ public class Tank {
     public GroupEnum getGroup() {
         return group;
     }
+
+    /*public Rectangle getRectangle() {
+        return rectangle;
+    }*/
+
 }
diff --git a/src/com/msb/TankDemo.java b/src/com/msb/TankDemo.java
index 4bbdb11..4a6b454 100644
--- a/src/com/msb/TankDemo.java
+++ b/src/com/msb/TankDemo.java
@@ -16,7 +16,8 @@ public class TankDemo {
 
          //创建5个敌方坦克
         for (int i=0; i<5; i++) {
-            tankFrame.tanks.add(new Tank(100 + i*80, 100, DirEnum.valueOf(random.nextInt(3)), GroupEnum.BAD, tankFrame));
+//            tankFrame.tanks.add(new Tank(100 + i*80, 100, DirEnum.valueOf(random.nextInt(30)%4), GroupEnum.BAD, tankFrame));
+            tankFrame.tanks.add(new Tank(100 + i*80, 100, DirEnum.DOWN, GroupEnum.BAD, tankFrame));
         }
 
          //现实当中，虽然可以过按键来改变方块的坐标并且重新刷新画板来实现移动，但是敌方的坦克应该是自动在跑
diff --git a/src/com/msb/TankFrame.java b/src/com/msb/TankFrame.java
index 2edf76d..630cf7e 100644
--- a/src/com/msb/TankFrame.java
+++ b/src/com/msb/TankFrame.java
@@ -53,6 +53,7 @@ public class TankFrame extends Frame {
         g.setColor(Color.WHITE);
         g.drawString("子弹的数量：" + bullets.size(), 10, 60);
         g.drawString("敌方坦克数量：" + tanks.size(), 10, 90);
+        g.drawString("爆炸的数量：" + explodes.size(), 10, 120);
         g.setColor(color);
         myTank.paint(g);