/// <summary>
/// Update content of Resource, creating it if necessary.
/// </summary>
/// <param name="request"></param>
private void UpdateResource(Request request)
{
// Get Unity Type of Resource
Type commonType = this.injector.serializer.ToCommonType(request.resourceType);
// If resource is not allowed to receive update, then drop request
if (!RuleUtility.FindResourceRule(this.injector, commonType, UpdateType.RECEIVE))
{
return;
}
ResourceNode node;
if (this.injector.resourceStore.TryGet(request.name, commonType, out node))
{
// If Resource exists, try to apply updates. If successful, request is fulfilled.
if (request.resource.Apply(this.injector, node.resource))
{
node.UpdateHash();
LogUtility.Log(this.injector, LogType.INFORMATION, "Resource update sucessful");
return;
}
}
else
{
// If Resource does not exist, create it
UnityEngine.Object resource = request.resource.Construct();
resource.name = request.name;
// Try to apply updates; if successful, request is fulfilled
if (request.resource.Apply(this.injector, resource))
{
node = this.injector.resourceStore.Add(request.name, resource);
node.UpdateHash();
LogUtility.Log(this.injector, LogType.INFORMATION, "Resource " + commonType + " update sucessful");
return;
}
}
// Resource creation was not successful in this update
// If this request was handled less times than allowed, then try in an later update loop
if (request.iteration < Model.ATTEMPTS_TO_UPDATE)
{
request.iteration++;
nextRequestQueue.Enqueue(request);
LogUtility.Log(this.injector, LogType.INFORMATION, "Resource " + commonType + " update unsucessful because of missing references");
}
// Else, report failed resource update
else
{
LogUtility.Log(this.injector, LogType.WARNING, "Request to update resource " + commonType + " for " + request.name + " dropped");
}
}
/// <summary>
/// Remove Resource from tracked store. Will only be garbage-collected if no other resource uses it.
/// </summary>
/// <param name="request"></param>
private void DeleteResource(Request request)
{
// Get Unity Type of Resource
Type commonType = this.injector.serializer.ToCommonType(request.resourceType);
// If resource is not allowed to receive update, then drop request
if (!RuleUtility.FindResourceRule(this.injector, commonType, UpdateType.RECEIVE))
{
return;
}
// If ResourceStore contains Resource, then remove it
if (this.injector.resourceStore.Contains(name))
{
this.injector.resourceStore.Remove(name);
}
}
/// <summary>
/// Check synchronized part of scene for changes in GameObjects, Components or Resources.
/// </summary>
internal void TrackChanges()
{
// Create lists of resources and components that have pending requests
List <NameTypePair> blockedResources = new List <NameTypePair>();
List <NameTypePair> blockedComponents = new List <NameTypePair>();
// Check pending requests for components and resources
foreach (Request request in requestQueue.ToArray())
{
switch (request.messageType)
{
// Check if request is pending for resource
case Request.RESOURCE:
if (request.resource != null)
{
blockedResources.Add(new NameTypePair(request.name, request.resource.commonType));
}
else if (request.resourceType != null)
{
blockedResources.Add(new NameTypePair(request.name, request.resourceType));
}
break;
// Check if request is pending for component
case Request.COMPONENT:
if (request.components != null)
{
// Component requests can contain multiple components
foreach (AbstractComponent component in request.components)
{
blockedComponents.Add(new NameTypePair(request.name, component.commonType));
}
}
else if (request.componentTypes != null)
{
// Component requests can contain multiple components
foreach (Type type in request.componentTypes)
{
blockedComponents.Add(new NameTypePair(request.name, type));
}
}
break;
}
}
// Add untracked GameObjects to ObjectStore as Objects without Components
foreach (Transform transform in this.gameObject.GetComponentsInChildren <Transform>())
{
// Make sure that GameObject with NetworkModel attached does not get synced to Server
if (transform != this.gameObject.transform)
{
// Get existing reference or create a unique reference for GameObject
transform.gameObject.name = this.injector.objectStore.GetReferenceName(transform.gameObject);
// Check if GameObject is already in ObjectStore
if (!this.injector.objectStore.ContainsKey(transform.gameObject.name))
{
this.injector.objectStore.Add(transform.gameObject);
}
}
}
// List of GameObjects that have been deleted on this client
List <string> objectsToDelete = new List <string>();
// Iterate over GameObject Store
foreach (KeyValuePair <string, ObjectNode> objectEntry in this.injector.objectStore)
{
// Never synchronize the root gameobject containing the NetworkModel
string referenceName = objectEntry.Key;
if (referenceName == Model.ROOT_NAME)
{
continue;
}
// If Element does not exist anymore (or the name was changed), then add it to the list to schedule the deletion
// (When changing the name of a GameObject, the ObjectNode of that GameOBject gets destroyed and a new ObjectNode is created)
ObjectNode node = objectEntry.Value;
if (node.gameObject == null || node.gameObject.name != referenceName)
{
objectsToDelete.Add(referenceName);
}
// Else, check for changes in hierarchy and components
else
{
// Check if parent of gameObject has changed compared to last known state
if (node.gameObject.transform.parent.GetInstanceID() != node.parentID)
{
// Send updated parent information to server
this.injector.connection.SendRequest(Request.UpdateObject(this.injector, node.gameObject));
node.gameObject.transform.hasChanged = false;
}
// Update Node with current values from represented GameObject
node.Update();
// List of Components that have been deleted on this client
List <Type> deletedComponents = new List <Type>();
// List of Components that have been deleted and inform the server about it
List <Type> sendDeletedComponents = new List <Type>();
// List of Components that have been changed on this client
List <AbstractComponent> updatedComponents = new List <AbstractComponent>();
// List of Components that have been changed and inform the server about it
List <AbstractComponent> sendUpdatedComponents = new List <AbstractComponent>();
// Iterate over tracked components of the node
foreach (KeyValuePair <Type, long> hashEntry in node.hashes)
{
// If component is blocked from tracking changes, then continue with next component
if (blockedComponents.Contains(new NameTypePair(node.gameObject.name, hashEntry.Key)))
{
LogUtility.Log(this.injector, LogType.INFORMATION, "Component " + hashEntry.Key + " update blocked");
continue;
}
// Get the component which is pointed at in this loop
Component component = node.gameObject.GetComponent(hashEntry.Key);
// If component is allowed to send, then track changes
bool send = RuleUtility.FindComponentRule(this.injector, node.gameObject, component.GetType(), UpdateType.SEND);
// If Component does not exist anymore, then schedule it for deletion
if (component == null)
{
// Delete references to component on client
Type type = this.injector.serializer.ToSerializableType(hashEntry.Key);
deletedComponents.Add(type);
// Inform the server about the change
if (send)
{
sendDeletedComponents.Add(type);
}
continue;
}
// Transform UnityEngine Component to NetworkModel AbstractComponent
AbstractComponent serializedComponent = this.injector.serializer.ToSerializableComponent(component);
// If Component does not exist as a serializable Component
if (serializedComponent == null)
{
continue;
}
// Generate hash of component and compare it to the previously stored value; if not equal, then add it to update list
if (serializedComponent.GetHash() != hashEntry.Value)
{
// Update hash stored for component on client
updatedComponents.Add(serializedComponent);
// Inform the server about the change
if (send)
{
sendUpdatedComponents.Add(serializedComponent);
}
}
}
// Components scheduled for Delete
foreach (Type type in deletedComponents)
{
node.RemoveComponent(this.injector.serializer.ToCommonType(type));
}
// Components scheduled for Update
foreach (AbstractComponent component in updatedComponents)
{
node.UpdateComponent(component.commonType);
}
// Check if there are deleted components the server needs to be informed about
if (sendDeletedComponents.Count > 0)
{
this.injector.connection.SendRequest(Request.DeleteComponents(this.injector, referenceName, sendDeletedComponents));
}
// Check if there are updated components the server needs to be informed about
if (sendUpdatedComponents.Count > 0)
{
this.injector.connection.SendRequest(Request.UpdateComponents(this.injector, referenceName, sendUpdatedComponents));
node.gameObject.transform.hasChanged = false;
}
}
}
// Delete scheduled GameObjects and send Delete Request
foreach (string referenceName in objectsToDelete)
{
this.injector.objectStore.Remove(referenceName);
this.injector.connection.SendRequest(Request.DeleteObject(this.injector, referenceName));
}
// List of Resources that have been deleted on this client
List <string> resourcesToDelete = new List <string>();
// Iterate over Resource Store
for (int i = 0; i < this.injector.resourceStore.Count; i++)
{
// Get the resource which is pointed at in this loop
ResourceNode node = (ResourceNode)this.injector.resourceStore[i];
string resourceName = node.name;
// If resource name is null, then check next resource
if (resourceName == "null")
{
continue;
}
// If resource is blocked from tracking changes, then continue with next resource
if (blockedResources.Contains(new NameTypePair(resourceName, node.type)))
{
LogUtility.Log(this.injector, LogType.INFORMATION, "Resource " + node.type + " update blocked");
continue;
}
// If resource is allowed to send, then track changes
bool send = RuleUtility.FindResourceRule(this.injector, node.type, UpdateType.SEND);
// If Element does not exist anymore, then schedule it for deletion
if (node.resource == null || node.resource.name != resourceName || node.resource.GetType() != node.type)
{
// Delete references to resource on client
resourcesToDelete.Add(resourceName);
// Inform the server about the change
if (send)
{
this.injector.connection.SendRequest(Request.DeleteResource(this.injector, resourceName));
}
}
// Else, check for changes
else
{
// Transform UnityEngine Resource to NetworkModel AbstractResource
AbstractResource serializedResource = this.injector.serializer.ToSerializableResource(node.resource);
if (serializedResource.GetHash() != node.hash)
{
// Inform the server about the change
if (send)
{
this.injector.connection.SendRequest(Request.UpdateResource(this.injector, resourceName,
this.injector.serializer.ToSerializableType(node.type), serializedResource));
}
// Update hash stored for resource on client
node.UpdateHash();
}
}
}
// Delete resources scheduled for deleting from ResourceStore
foreach (string resourceName in resourcesToDelete)
{
this.injector.resourceStore.Remove(resourceName);
}
}