Forum ‹ BigDB ‹ Nested DatabaseObjects

[azuanagames]

Hello,

I'm trying to create an achievement record on the PlayerObject. I know that I can use integers and set bits for the various achievements, but since you guys handle packing and what not, I figured I can just use nested objects as follows:

I get the current list of achievements from the database:

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      vAchievements = PlayerObject.GetObject("achievements");
      if (vAchievements == null) {
        vAchievements = new DatabaseObject();
      }


I grant an achievement as follows:

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      if (!vAchievements.Contains(achievement)) {
        vAchievements.Set(achievement, true);
      }


Later I save achievements as follows:

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      PlayerObject.Set("achievements", vAchievements);
      PlayerObject.Save();


But, I'm getting this error message:

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Cannot create circular references inside database objects

I don't understand the error since vAchievement is NOT the PlayerObject, how is this a circular reference?

[Oliver]

Hey,

I just tested this and it worked with no issues:

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public override void UserJoined(BasePlayer player) {
   var PlayerObject = player.PlayerObject;
   var vAchievements = PlayerObject.GetObject("achievements");
   if(vAchievements == null) {
      vAchievements = new DatabaseObject();
   }
   var achievement = "hepo";
   if(!vAchievements.Contains(achievement)) {
      vAchievements.Set(achievement, true);
   }
   PlayerObject.Set("achievements", vAchievements);
   PlayerObject.Save();
}


So my guess is that you're somehow sharing the sub object "vAchievements" between multiple PlayerObjects which would cause an error.

Regardless, it would be much easier to simply do this:

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   // whenever you want to give an achivement
   var achivementName="isawesome";
   player.PlayerObject.Set("achievements."+achivementName,true);

   // when you're done
   player.PlayerObject.Save();


That'll create the subobject "achievements" when you need it.

You can use this to check if the achievement is there:

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   // to read an achievement
   player.PlayerObject.GetBool("achievements."+achivementName);


One last note: It will take up less space if you use a single integer and with one bit for each achievement, but it will be much harder to maintain in the long run. I'd go with nested objects if it was me

Best,
Oliver

[azuanagames]

Looks like it works using the Set("achievements."+achivementName method.

I wasn't sharing the vAchievements DatabaseObject, it was a member variable on the Player object. This works though so no worries!

Thanks again