This document is about: SERVER 4
SWITCH TO

MMO Features

The MMO demo is discontinued and we don't offer support for it anymore. The current documentation and the sample provided in the SDK are left temporarily and will be removed in the next update. For MMO we recommend following examples of Das Tal or Albion Online.
  • Region-based interest management

  • Items (Avatars, NPCs, shared game objects)

    • Clients can spawn, destroy and move items.
    • Items can have properties that are readable by other clients and
      changeable by the owner.
    • Item properties have a revision number: Clients that lose sight
      of an item for some time can compare the revision to determine
      if they need to receive updated properties.
  • Interest automatically received.

    • Interest areas have two interest thresholds. Regions that enter
      the inner radius become visible; regions that leave the outer
      become invisible. This optimization reduces frequent visibility
      changes.
Photon Server: MMO Interest Areas
Photon Server: MMO Interest Areas
  • Invisible item, out of range

    • Invisible item enters outer interest area
    • Invisible item enters inner interest area and becomes
      visible
    • Visible item leaves inner interest area
    • Visible item leaves outer interest area and becomes
      invisible
  • Interest areas can be resized: Adjusting the view distance in
    proportion to the amount of seen items can be beneficial

    • To improve the performance in crowded areas or
    • To show distant items in areas with low population.
  • Interest areas can be attached to any item: Whenever the item
    moves the interest area follows and changes the interest
    accordingly. This is especially useful to move the interest area
    with the own avatar.

  • Detached interest areas can be moved freely. This is beneficial
    for camera flights.

  • Clients can have multiple interest areas to show different parts
    of the world at the same time.

  • Manual interest management: Clients can manually (un-)declare
    interest in items.

  • Custom events can be sent through items to two possible targets:

    • The item owner
    • All clients that are interested in the item (item subscriber)
  • Optimized position updates: Clients send updates only when they
    move.

  • Duplicate user recognition: A subsequent user connection resets the
    previous connection.

Back to top