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backend/src/main/java/com/zombie/game/model/StaticWall.java

@@ -0,0 +1,38 @@
+package com.zombie.game.model;
+
+/**
+ * 静态墙体
+ *
+ * 不可破坏的永久性障碍物，如边界墙、建筑等。
+ */
+public class StaticWall extends Wall {
+
+    public StaticWall(int gridX, int gridY) {
+        super(gridX, gridY);
+    }
+
+    @Override
+    public boolean isDestructible() {
+        return false;
+    }
+
+    @Override
+    public boolean isDestroyed() {
+        return false;
+    }
+
+    @Override
+    public float getHealth() {
+        return Float.MAX_VALUE;
+    }
+
+    @Override
+    public void takeDamage(float damage) {
+        // 静态墙体不可破坏，忽略伤害
+    }
+
+    @Override
+    public float getMovementCost() {
+        return Float.MAX_VALUE;
+    }
+}