equals and hash defined for wpak pojos

src/engine/wpak/data/Power.java

@@ -9,11 +9,11 @@
 package engine.wpak.data;
 
 import engine.mbEnums;
-import engine.objects.AbstractWorldObject;
 
 import java.util.ArrayList;
 import java.util.EnumSet;
 import java.util.HashMap;
+import java.util.Objects;
 
 public class Power {
     public String power_id;
@@ -114,8 +114,22 @@ public class Power {
     public boolean isSkill(){
         return true;
     }
-
     public boolean isChant(){
         return true;
     }
+
+    public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+
+        Power power = (Power) o;
+        return Objects.equals(power_id, power.power_id);
+    }
+
+    @Override
+    public int hashCode() {
+        return power_id.hashCode(); // Use only the id field for hashCode
+    }
 }