坦克大战（一期）-设计模式-添加子弹与墙、坦克与墙的碰撞

src/main/java/com/msb/chain/ColliderChain.java

@@ -7,7 +7,9 @@ package com.msb.chain;/**
 
 import com.msb.inter.Collider;
 import com.msb.inter.impl.BulletTankCollider;
+import com.msb.inter.impl.BulletWallCollider;
 import com.msb.inter.impl.TankTankCollider;
+import com.msb.inter.impl.TankWallCollider;
 import com.msb.model.abstracts.GameObject;
 
 import java.util.LinkedList;
@@ -26,6 +28,8 @@ public class ColliderChain implements Collider {
     public ColliderChain() {
         add(new BulletTankCollider());
         add(new TankTankCollider());
+        add(new TankWallCollider());
+        add(new BulletWallCollider());
     }
 
     public void add(Collider collider) {

src/main/java/com/msb/inter/impl/BulletWallCollider.java

@@ -0,0 +1,37 @@
+package com.msb.inter.impl;/**
+ * @Author bingor
+ * @Date 2022/10/11 9:41
+ * @Description: com.msb.inter.impl
+ * @Version: 1.0
+ */
+
+import com.msb.inter.Collider;
+import com.msb.model.Bullet;
+import com.msb.model.Wall;
+import com.msb.model.abstracts.GameObject;
+
+/**
+ *@ClassName BulletWallCollider
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/11 9:41
+ *@Version 3.0
+ */
+public class BulletWallCollider implements Collider {
+    @Override
+    public boolean collide(GameObject o1, GameObject o2) {
+        if(o1 instanceof Bullet && o2 instanceof Wall) {
+            Bullet bullet = (Bullet) o1;
+            Wall wall = (Wall) o2;
+
+            if(bullet.getRectangle().intersects(wall.getRectangle())) {
+                bullet.die();
+            }
+            return true;    //子弹碰墙，只有子弹消亡，但是墙还是好的，所以责任链还是需要继续
+        } else if (o1 instanceof Wall && o2 instanceof Bullet) {
+            return collide(o2, o1);
+        } else {
+            return true;
+        }
+    }
+}

src/main/java/com/msb/inter/impl/TankWallCollider.java

@@ -0,0 +1,36 @@
+package com.msb.inter.impl;/**
+ * @Author bingor
+ * @Date 2022/10/11 9:41
+ * @Description: com.msb.inter.impl
+ * @Version: 1.0
+ */
+
+import com.msb.inter.Collider;
+import com.msb.model.Tank;
+import com.msb.model.Wall;
+import com.msb.model.abstracts.GameObject;
+
+/**
+ *@ClassName BulletTankCollider
+ *@Description TODO
+ *@Author bingor
+ *@Date 2022/10/11 9:41
+ *@Version 3.0
+ */
+public class TankWallCollider implements Collider {
+    @Override
+    public boolean collide(GameObject o1, GameObject o2) {
+        if(o1 instanceof Tank && o2 instanceof Wall) {
+            Tank tank = (Tank) o1;
+            Wall wall = (Wall) o2;
+            if(tank.getRectangle().intersects(wall.getRectangle())) {
+                tank.goBack();
+            }
+            return true;   //坦克与墙相撞，坦克和墙不会消失，所以责任链应该继续
+        } else if((o1 instanceof Wall && o2 instanceof Tank)) {
+            return collide(o2, o1);
+        } else {
+            return true;
+        }
+    }
+}