update Entity and Location

Java-Knight/src/main/java/org/project/entity/Entity.java

@@ -36,4 +36,9 @@ public interface Entity {
     void setDefendRate(double defendRate);
 
     Weapon getWeapon();
+
+    default boolean isAlive() {
+       int hp = getHP();
+        return hp > 0;
+    }
 }

Java-Knight/src/main/java/org/project/location/Location.java

@@ -9,8 +9,7 @@ public class Location {
 
     private ArrayList<Enemy> enemies;
 
-    public Location(ArrayList<Location> locations, ArrayList<Enemy> enemies) {
+    public Location(ArrayList<Enemy> enemies) {
-        this.locations = locations;
         this.enemies = enemies;
     }
 
@@ -18,10 +17,6 @@ public class Location {
         return name;
     }
     
-    public ArrayList<Location> getLocations() {
-        return locations;
-    }
-
     public ArrayList<Enemy> getEnemies() {
         return enemies;
     }