Examples of marauroa.common.game.Perception

marauroa.common.game.Perception

The Perception class provides a encapsultated way of managing perceptions. It is the core implementation of the Delta^2. Perception manages added, modified and removed perceptions. The basic structure for sending world updates to clients is called perceptions. There are two types of perception:

Sync perceptions
these are used to synchronize clients with the server world representation. This is the only valid way of knowing world's status.
Delta perception
this is used to send only the changes to the world since the last perception.

Our actual Perception system is called Delta2. It is heavily attached to the Marauroa core, so I recommend you to use it :)

How Perceptions and Actions work Actions are sent from the client to the server in order to make the character perform an action. In order for the client to know the result of the action the Server needs to send a reply to the client. How will this be done?

In a first attempt, we send clients back an action that was the result of their action. However, this made the code really hard because we had to update two different things, perceptions and actions. Instead the solution appears intuitively: Why not join action reply and perceptions.

So the action reply is stored inside each object (that executed the action ) with a set of attributes that determine the action return status and the attributes. This way of doing replys makes it a bit harder on RPManager but it simplifys the creation of new clients alot.

See RPAction reply in the RPObject documentation to know exactly what is returned. However, keep in mind that the return result depends of each particular game. @author miguel

    }
    return ruleProcessor.createCharacter(username, character, template);
  }


  private Perception getPlayerPerception(PlayerEntry entry) {
    Perception perception = null;


    IRPZone.ID id = new IRPZone.ID(entry.object.get("zoneid"));
    IRPZone zone = world.getRPZone(id);


    if (entry.requestedSync == false) {

          playersToRemove.add(entry);
          continue;
        }


        if (entry.state == ClientState.GAME_BEGIN) {
          Perception perception = getPlayerPerception(entry);
          sendPlayerPerception(entry, perception, entry.object);
        }
      } catch (Exception e) {
        logger.error("Removing player(" + entry.clientid + ") because it caused a Exception while contacting it", e);
        playersToRemove.add(entry);

    rand.setSeed(new Date().getTime());


    objects = new LinkedHashMap<RPObject.ID, RPObject>();
    modified = new HashSet<RPObject>();


    perception = new Perception(Perception.DELTA, this.zoneid);
  }

      }


      return prebuildDeltaPerception;
    } else /* type==Perception.SYNC */{
      if (prebuildSyncPerception == null) {
        prebuildSyncPerception = new Perception(Perception.SYNC, getID());
        prebuildSyncPerception.addedList = new ArrayList<RPObject>(objects.size());
        for (RPObject obj : objects.values()) {
          if (!obj.isHidden()) {
            prebuildSyncPerception.addedList.add(obj);
          }

Examples of marauroa.common.game.Perception

Related Classes of marauroa.common.game.Perception