坦克大战(一期)-干掉敌方坦克

src/com/msb/Bullet.java

@@ -60,4 +60,26 @@ public class Bullet {
         if(x<0 || y<0 || x>TankFrame.GAME_WIDTH || y>TankFrame.GAME_HEIGHT) this.live = false;
 
     }
+
+    public int getX() {
+        return x;
+    }
+
+    public int getY() {
+        return y;
+    }
+
+    //碰撞
+    public void collide(Tank tank) {
+        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)) {
+            this.die();
+            tank.die();
+        }
+    }
+
+    private void die() {
+        this.live = false;
+    }
 }

src/com/msb/Tank.java

@@ -18,6 +18,7 @@ public class Tank {
     private TankFrame tankFrame;
     public static final int WIDTH = ResourcesMgr.tankD.getWidth();
     public static final int HEIGHT = ResourcesMgr.tankD.getHeight();
+    private boolean live = true;
 
     public Tank(int x, int y, DirEnum dir, TankFrame tankFrame) {
         this.x = x;
@@ -27,6 +28,12 @@ public class Tank {
     }
 
     public void paint(Graphics g) {
+
+        if( ! live)  {
+            tankFrame.tanks.remove(this);
+            return;
+        }
+
        /* Color color = g.getColor();
         g.setColor(Color.YELLOW);
         g.fillRect(x, y, 50, 50);
@@ -64,8 +71,21 @@ public class Tank {
     }
 
     public void fire() {
+        //子弹在坦克每个方向上的中心点应该是不一样的. TODO
         int bX = this.x + WIDTH/2 - Bullet.WIDTH/2;
         int bY = this.y+HEIGHT/2-Bullet.HEIGHT/2;
         tankFrame.bullets.add(new Bullet(bX, bY, this.dir, tankFrame));
     }
+
+    public int getX() {
+        return x;
+    }
+
+    public int getY() {
+        return y;
+    }
+
+    public void die() {
+        this.live = false;
+    }
 }

src/com/msb/TankFrame.java

@@ -50,17 +50,25 @@ public class TankFrame extends Frame {
         Color color = g.getColor();
         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.setColor(color);
         tank.paint(g);
 
         //画出敌方坦克
-        for (Tank tank : tanks) {
-            tank.paint(g);
+        for (int i=0; i<tanks.size(); i++) {
+            tanks.get(i).paint(g);
         }
 
         for (int i=0; i<bullets.size(); i++) {
             bullets.get(i).paint(g);
         }
+
+        for (int i=0; i<bullets.size(); i++) {
+            for (int j=0; j<tanks.size(); j++) {
+                bullets.get(i).collide(tanks.get(j));
+            }
+        }
+
     }
 
     //双缓冲，解决闪烁现象