/// <summary>
/// Tries to restore the binding or find closest PCF.
/// </summary>
void RestoreBinding(string objId)
{
if (MLPersistentStore.Contains(objId))
{
MLContentBinding binding;
MLResult result = MLPersistentStore.Load(objId, out binding);
if (!result.IsOk)
{
SetError(new MLResult(result.Code,
string.Format("Error: MLPersistentPoint failed to load binding. Reason: {0}", result)));
SetComplete(false);
}
else
{
Binding = binding;
Binding.GameObject = this.gameObject;
MLContentBinder.Restore(Binding, HandleBindingRestore);
}
}
else
{
StartCoroutine(BindToClosestPCF());
}
}
/// <summary>
/// Creates a binding to the closest PCF
/// </summary>
/// <returns>Must be executed as a Coroutine</returns>
IEnumerator TryBindingToClosestPCF()
{
_done = false;
MLResult returnResult = MLPersistentCoordinateFrames.FindClosestPCF(gameObject.transform.position, (result, returnPCF) =>
{
if (result.IsOk && returnPCF.CurrentResult == MLResultCode.Ok)
{
Debug.Log("Binding to closest found PCF: " + returnPCF.CFUID);
Binding = MLContentBinder.BindToPCF(gameObject.name, gameObject, returnPCF);
MLPersistentStore.Save(Binding);
SetComplete(true);
_done = true;
}
else
{
Debug.LogErrorFormat("Error: MLPersistentPoint failed to find closest PCF. Reason: {0}", result);
SetComplete(false);
_done = true;
}
});
if (!returnResult.IsOk)
{
// Technically, if we reach this point, the system had a problem
Debug.LogErrorFormat("Error: MLPersistentPoint failed to attempt to find closest PCF. Reason: {0}", returnResult);
SetComplete(false);
_done = true;
}
while (!_done)
{
yield return(null);
}
}
/// <summary>
/// Creates a binding to the closest PCF
/// </summary>
/// <returns>Must be executed as a Coroutine</returns>
IEnumerator TryBindingToClosestPCF()
{
_done = false;
MLResult returnResult = MLPersistentCoordinateFrames.FindClosestPCF(gameObject.transform.position, (pcfPositionResult, pcfWithPosition) =>
{
if (pcfPositionResult.IsOk && pcfWithPosition != null && pcfWithPosition.CurrentResult == MLResultCode.Ok)
{
Debug.Log("Binding to closest found PCF: " + pcfWithPosition.CFUID);
Binding = MLContentBinder.BindToPCF(UniqueId, gameObject, pcfWithPosition);
MLPersistentStore.Save(Binding);
NotifyChangeOfStatus(Status.BINDING_CREATED, MLResult.ResultOk);
RegisterPCFEventHandlers();
_done = true;
}
else
{
Debug.LogErrorFormat("Error: MLPersistentBehavior failed to get PCF position. Reason: {0}", pcfPositionResult);
NotifyChangeOfStatus(Status.BINDING_CREATE_FAILED, pcfPositionResult);
_done = true;
}
});
if (!returnResult.IsOk)
{
Debug.LogErrorFormat("Error: MLPersistentBehavior failed to attempt to find closest PCF. Reason: {0}", returnResult);
NotifyChangeOfStatus(Status.BINDING_CREATE_FAILED, returnResult);
_done = true;
}
while (!_done)
{
yield return(null);
}
}
/// <summary>
/// Destroys the given binding
/// </summary>
/// <param name="binding">Binding</param>
void DestroyBindingInternal(MLContentBinding binding)
{
if (binding != null)
{
MLPersistentStore.DeleteBinding(binding);
}
}
/// <summary>
/// Tries to restore the binding from persistent storage and PCF system
/// </summary>
IEnumerator RestoreBinding(string objId)
{
_state = State.RestoreBinding;
if (MLPersistentStore.Contains(objId))
{
MLContentBinding binding;
MLResult result = MLPersistentStore.Load(objId, out binding);
if (!result.IsOk)
{
SetError(result);
_state = State.BindingComplete;
}
else
{
Binding = binding;
Debug.Log("binding result : " + Binding.PCF.CurrentResult);
Binding.GameObject = this.gameObject;
MLContentBinder.Restore(Binding, HandleBindingRestore);
}
}
else
{
BindToAllPCFs();
}
while (_state != State.BindingComplete)
{
yield return(null);
}
yield break;
}
/// <summary>
/// Handler for binding restore
/// </summary>
/// <param name="contentBinding">Content binding.</param>
/// <param name="resultCode">Result code.</param>
void HandleBindingRestore(MLContentBinding contentBinding, MLResult result)
{
if (!result.IsOk)
{
if (NumRetriesForRestore > 0)
{
NumRetriesForRestore--;
Debug.LogWarningFormat("Failed to restore: {0} - {1}. Retries left: {2}. Result Code: {3}",
gameObject.name, contentBinding.PCF.CFUID, NumRetriesForRestore, result);
NotifyChangeOfStatus(Status.RESTORE_RETRY, result);
StartCoroutine(TryRestore());
}
else
{
string logMessage = string.Format("Failed to restore : {0} - {1}. Result code: {2}",
gameObject.name, contentBinding.PCF.CFUID, result);
if (result.Code == MLResultCode.SnapshotPoseNotFound)
{
// Content is bound to a PCF in a different map
Debug.LogWarning(logMessage);
}
else
{
Debug.LogError(logMessage);
}
NotifyChangeOfStatus(Status.RESTORE_FAILED, result);
}
}
else
{
NotifyChangeOfStatus(Status.RESTORE_SUCCESSFUL, MLResult.ResultOk);
RegisterPCFEventHandlers();
}
}
/// <summary>
/// Destroys the given binding
/// </summary>
/// <param name="binding">Binding</param>
void DestroyBindingInternal(MLContentBinding binding)
{
if (binding != null)
{
NotifyChangeOfStatus(Status.BINDING_DESTROYED, MLResult.ResultOk);
MLPersistentStore.DeleteBinding(binding);
}
}
/// <summary>
/// Bind this gameObject to a pcf
/// </summary>
/// <param name="pcf">The pcf to bind to</param>
void BindToPCF(MLPCF pcf)
{
UnregisterPCFEventHandlers();
DestroyBinding();
Binding = MLContentBinder.BindToPCF(UniqueId, gameObject, pcf);
MLPersistentStore.Save(Binding);
NotifyChangeOfStatus(Status.BINDING_CREATED, MLResult.ResultOk);
RegisterPCFEventHandlers();
_pcfLost = false;
}
/// <summary>
/// Handler for binding restore
/// </summary>
/// <param name="contentBinding">Content binding.</param>
/// <param name="resultCode">Result code.</param>
void HandleBindingRestore(MLContentBinding contentBinding, MLResult result)
{
_state = State.BindingComplete;
Debug.Log("binding result : " + contentBinding.PCF.CurrentResult);
if (!result.IsOk)
{
MLPersistentStore.DeleteBinding(contentBinding);
Debug.LogFormat("Failed to restore : {0} - {1}. Result code:", gameObject.name, contentBinding.PCF.CFUID, result.Code);
}
}
/// <summary>
/// Restore the specified binding and call the callback when the restore is complete
/// </summary>
/// <param name="binding">Binding.</param>
/// <param name="callback">callback.</param>
/// <returns>
/// MLResult.code will be MLResult.Ok when operation is successful
///
/// MLResult.code will be MLResult.InvalidParam when callback is null
///
/// MLResult.code will be MLResult.UnspecifiedFailure when MLPersistentCoordinateFrames is not started
/// </returns>
public static MLResult Restore(MLContentBinding binding, Action <MLContentBinding, MLResult> callback)
{
if (binding == null || callback == null)
{
MLResult result = new MLResult(MLResultCode.InvalidParam, "Parameters are null");
MLPluginLog.ErrorFormat("MLContentBindings.Restore failed restoring binding. Reason: {0}", result);
return(result);
}
return(binding.Restore(callback));
}
void InternalDeleteBinding(MLContentBinding binding)
{
if (_data != null && _data.Bindings != null && _data.Bindings.Contains(binding))
{
_data.Bindings.Remove(binding);
_saveRequired = true;
}
if (_virtualIdToBindings != null && _virtualIdToBindings.ContainsKey(binding.ObjectId))
{
_virtualIdToBindings.Remove(binding.ObjectId);
}
}
MLResult LoadInternal(string virtualObjId, out MLContentBinding binding)
{
binding = new MLContentBinding();
if (string.IsNullOrEmpty(virtualObjId))
{
return(new MLResult(MLResultCode.InvalidParam, "virtual object id is not set."));
}
if (!ContainsInternal(virtualObjId))
{
return(new MLResult(MLResultCode.InvalidParam, "virtual object id not found."));
}
binding = _virtualIdToBindings[virtualObjId];
return(MLResult.ResultOk);
}
/// <summary>
/// Tries to restore the binding
/// </summary>
void RestoreBinding()
{
MLContentBinding binding;
MLResult result = MLPersistentStore.Load(UniqueId, out binding);
if (!result.IsOk)
{
Debug.LogErrorFormat("Error: MLPersistentBehavior failed to load binding. Reason: {0}", result);
NotifyChangeOfStatus(Status.RESTORE_FAILED, result);
}
else
{
Binding = binding;
Binding.GameObject = this.gameObject;
MLContentBinder.Restore(Binding, HandleBindingRestore);
}
}
/// <summary>
/// Handler for binding restore
/// </summary>
/// <param name="contentBinding">Content binding.</param>
/// <param name="resultCode">Result code.</param>
void HandleBindingRestore(MLContentBinding contentBinding, MLResult result)
{
_pcfRestoring = false;
if (!result.IsOk)
{
string logMessage = string.Format("Failed to restore : {0} - {1}. Result code: {2}",
gameObject.name, contentBinding.PCF.CFUID, result);
Debug.LogError(logMessage);
NotifyChangeOfStatus(Status.RESTORE_FAILED, result);
}
else
{
NotifyChangeOfStatus(Status.RESTORE_SUCCESSFUL, MLResult.ResultOk);
if (!_pcfLost)
{
// Handles two cases, registering for pcf events on app start and registering for pcf events when a pcf is lost and regained during runtime
UnregisterPCFEventHandlers();
RegisterPCFEventHandlers();
}
}
}
/// <summary>
/// Finds the closest pcf for this persistent point.
/// </summary>
void BindToAllPCFs()
{
_state = State.BindToAllPCFs;
string suffix = "";
int count = 0;
// In the loop below we try to associate the persitent point with not only
// the closest but all pcfs in the surrounding. This will increase the probablilty
// of restoration on reboots. It's costly in terms of disk space so we will limit it to
// a max
foreach (MLPCF pcf in _allPCFs)
{
string objectName = gameObject.name + suffix;
var returnResult = MLPersistentCoordinateFrames.GetPCFPosition(pcf, (result, returnPCF) =>
{
if (result.IsOk && pcf.CurrentResult == MLResultCode.Ok)
{
Debug.Log("binding to PCF: " + pcf.CFUID);
Binding = MLContentBinder.BindToPCF(objectName, gameObject, pcf);
MLPersistentStore.Save(Binding);
}
else
{
Debug.LogWarningFormat("Failed to find the position for PCF {0}", returnPCF.CFUID);
}
});
if (!returnResult.IsOk)
{
Debug.LogError("Failed to GetPCF");
break;
}
suffix = "-" + count;
count++;
}
_state = State.BindingComplete;
}
/// <summary>
/// Saves the binding. The binding is checked for validity and also
/// </summary>
/// <param name="binding">Binding.</param>
void InternalSave(MLContentBinding binding)
{
if (!binding.IsValid)
{
MLPluginLog.Error("MLPersistentStore.InternalSave failed. Reason: Binding is invalid");
return;
}
if (_data != null)
{
// note: bindings are currently looked up by object references
// because once created they are passed around as references
// if we previously saved a binding
if (!_data.Bindings.Contains(binding))
{
_data.Bindings.Add(binding);
}
_saveRequired = true;
}
if (_virtualIdToBindings != null && !_virtualIdToBindings.ContainsKey(binding.ObjectId))
{
_virtualIdToBindings.Add(binding.ObjectId, binding);
}
}
/// <summary>
/// Creates a binding between the virtual object and the specified PCF.
/// </summary>
/// <param name="virtualObjId">Virtual object identifier.</param>
/// <param name="go">GameObject representing the virtual object. (Note: This is not serialized)</param>
/// <param name="pcf">PCF to bind to</param>
/// <returns>
/// MLContentBinding object with mapping between virtual object and PCF. Please note that
/// just calling this function is not enough to persist the binding. Call MLPersistentStore.Save to persist this mapping.
/// </returns>
public static MLContentBinding BindToPCF(string virtualObjId, GameObject go, MLPCF pcf)
{
if (pcf == null || go == null)
{
MLPluginLog.Error("MLContentBindings.BindToPCF failed, either GameObject or PCF is null.");
return(null);
}
if (pcf.CurrentResult != MLResult.Code.Ok)
{
MLPluginLog.Error("MLContentBindings.BindToPCF failed, invalid PCF.");
return(null);
}
MLContentBinding newBinding = new MLContentBinding();
newBinding.GameObject = go;
newBinding.ObjectId = virtualObjId;
newBinding.PCF = pcf;
newBinding.BindingType = MLContentBindingType.PCF;
newBinding.Update();
//MLPersistentCoordinateFrames.QueueForUpdates(newBinding.PCF);
return(newBinding);
}
/// <summary>
/// Handler for binding restore
/// </summary>
/// <param name="contentBinding">Content binding.</param>
/// <param name="resultCode">Result code.</param>
void HandleBindingRestore(MLContentBinding contentBinding, MLResult result)
{
if (!result.IsOk)
{
if (NumRetriesForRestore > 0)
{
NumRetriesForRestore--;
Debug.LogWarningFormat("Failed to restore: {0} - {1}. Retries left: {2}. Result Code: {3}",
gameObject.name, contentBinding.PCF.CFUID, NumRetriesForRestore, result);
StartCoroutine(TryRestore());
}
else
{
Debug.LogErrorFormat("Failed to restore : {0} - {1}. Deleting Binding. Result code: {2}",
gameObject.name, contentBinding.PCF.CFUID, result);
MLPersistentStore.DeleteBinding(contentBinding);
SetComplete(false);
}
}
else
{
SetComplete(true);
}
}
/// <summary>
/// Load the Content binding for the specified virtualObjId
/// </summary>
/// <param name="virtualObjId">Virtual object identifier.</param>
/// <param name="binding">Binding.</param>
/// <returns>
/// MLResult.Code will be MLResultCode.Ok if successful.
///
/// MLResult.Code will be MLResultCode.InvalidParam if failed due to an invalid input parameter.
/// </returns>
public static MLResult Load(string virtualObjId, out MLContentBinding binding)
{
return(Instance.LoadInternal(virtualObjId, out binding));
}
/// <summary>
/// Save the specified binding. Note : currently this function saves to the file system
/// everytime you call it, so it can be slow.
/// </summary>
/// <param name="binding">Binding.</param>
public static void Save(MLContentBinding binding)
{
Instance.InternalSave(binding);
}
/// <summary>
/// Deletes the binding if it exists. otherwise it's a no op.
/// </summary>
/// <param name="binding">Binding.</param>
public static void DeleteBinding(MLContentBinding binding)
{
Instance.InternalDeleteBinding(binding);
}
