com.threerings.whirled.server

Class SceneRegistry

java.lang.Object

com.threerings.whirled.server.SceneRegistry

All Implemented Interfaces:

com.threerings.crowd.data.LocationCodes, com.threerings.presents.data.InvocationCodes, com.threerings.presents.server.InvocationProvider, SceneCodes, SceneProvider

Direct Known Subclasses:

SpotSceneRegistry

public class SceneRegistry
extends Object
implements SceneCodes, SceneProvider

The scene registry is responsible for the management of all scenes. It handles interaction with the scene repository and ensures that scenes are loaded into memory when needed and flushed from memory when not needed.

The scene repository also takes care of bridging from the blocking, synchronous world of the scene repository to the non-blocking asynchronous world of the distributed object event queue. Thus its interfaces for accessing scenes are structured so as to not block the dobjmgr thread while waiting for scenes to be read from or written to the repository.

Note: All access to the scene registry should take place from the dobjmgr thread.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SceneRegistry.ConfigFactory Used to create PlaceConfig instances for scenes.
static interface	SceneRegistry.ResolutionListener Because scenes must be loaded from the scene repository and this must not be done on the dobjmgr thread, the interface for resolving scenes requires that the entity that wishes for a scene to be resolved implement this callback interface so that it can be notified when a scene has been loaded and initialized.

Field Summary

Fields inherited from interface com.threerings.whirled.data.SceneCodes

SCENE_UPDATE, WHIRLED_GROUP

Fields inherited from interface com.threerings.crowd.data.LocationCodes

ALREADY_THERE, MOVE_IN_PROGRESS, NO_SUCH_PLACE

Fields inherited from interface com.threerings.presents.data.InvocationCodes

ACCESS_DENIED, E_ACCESS_DENIED, E_INTERNAL_ERROR, GLOBAL_GROUP, INTERNAL_ERROR

Constructor Summary

Constructors

Constructor and Description
SceneRegistry(com.threerings.presents.server.InvocationManager invmgr) Constructs a scene registry.

Method Summary

Modifier and Type	Method and Description
SceneManager	getSceneManager(int sceneId) Fetches the scene manager associated with the specified scene.
SceneRepository	getSceneRepository() Returns a reference to the scene repository in use by this registry.
void	leaveOccupiedScene(com.threerings.crowd.data.BodyObject source) Ejects the specified body from their current scene and zone.
void	moveBody(com.threerings.crowd.data.BodyObject source, int sceneId) Ejects the specified body from their current scene and sends them a request to move to the specified new scene.
void	moveTo(com.threerings.presents.data.ClientObject caller, int sceneId, int sceneVer, SceneService.SceneMoveListener listener) Handles a SceneService.moveTo(int, int, com.threerings.whirled.client.SceneService.SceneMoveListener) request.
void	resolveScene(int sceneId, SceneRegistry.ResolutionListener target) Requests that the specified scene be resolved, which means loaded into the server and initialized if the scene is not currently active.
String	where(int sceneId) Returns SceneManager.where() for the specified scene or null:sceneId if no scene manager exists for that scene.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SceneRegistry

@Inject
public SceneRegistry(com.threerings.presents.server.InvocationManager invmgr)

Constructs a scene registry.

Method Detail

getSceneManager

public SceneManager getSceneManager(int sceneId)

Fetches the scene manager associated with the specified scene.

Returns:

the scene manager for the specified scene or null if no scene manager is loaded for that scene.

getSceneRepository

public SceneRepository getSceneRepository()

Returns a reference to the scene repository in use by this registry.

where

public String where(int sceneId)

Returns SceneManager.where() for the specified scene or null:sceneId if no scene manager exists for that scene.

resolveScene

public void resolveScene(int sceneId,
                         SceneRegistry.ResolutionListener target)

Requests that the specified scene be resolved, which means loaded into the server and initialized if the scene is not currently active. The supplied callback instance will be notified, on the dobjmgr thread, when the scene has been resolved. If the scene is already active, it will be notified immediately (before the call to resolveScene(int, com.threerings.whirled.server.SceneRegistry.ResolutionListener) returns).

Parameters:

sceneId - the id of the scene to resolve.

target - a reference to a callback instance that will be notified when the scene has been resolved (which may be immediately if the scene is already active).

moveTo

public void moveTo(com.threerings.presents.data.ClientObject caller,
                   int sceneId,
                   int sceneVer,
                   SceneService.SceneMoveListener listener)

Description copied from interface: SceneProvider

Handles a SceneService.moveTo(int, int, com.threerings.whirled.client.SceneService.SceneMoveListener) request.

Specified by:

moveTo in interface SceneProvider

moveBody

public void moveBody(com.threerings.crowd.data.BodyObject source,
                     int sceneId)

Ejects the specified body from their current scene and sends them a request to move to the specified new scene. This is the scene-equivalent to LocationProvider.moveTo(com.threerings.presents.data.ClientObject, int, com.threerings.crowd.client.LocationService.MoveListener).

leaveOccupiedScene

public void leaveOccupiedScene(com.threerings.crowd.data.BodyObject source)

Ejects the specified body from their current scene and zone. This is the zone equivalent to LocationProvider.leavePlace(com.threerings.presents.data.ClientObject).