update entity

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

@@ -3,7 +3,7 @@ package org.project.entity;
 import org.project.item.weapons.Weapon;
 
 public interface Entity {
-    void attack(Entity target, double multiplier);
+    void attack(Entity target);
 
     void defend();
 
@@ -37,6 +37,10 @@ public interface Entity {
 
     Weapon getWeapon();
 
+    double getAttackMultiplier();
+
+    void setAttackMultiplier(double multiplier);
+
     default boolean isAlive() {
        int hp = getHP();
         return hp > 0;