void CreateChildren(UBehaviorTree* BTAsset, UBTCompositeNode* RootNode, const UBehaviorTreeGraphNode* RootEdNode, uint16* ExecutionIndex, uint8 TreeDepth)
{
if (RootEdNode == NULL)
{
return;
}
RootNode->Children.Reset();
RootNode->Services.Reset();
// collect services
if (RootEdNode->Services.Num())
{
for (int32 i = 0; i < RootEdNode->Services.Num(); i++)
{
UBTService* ServiceInstance = RootEdNode->Services[i] ? Cast<UBTService>(RootEdNode->Services[i]->NodeInstance) : NULL;
if (ServiceInstance)
{
if (Cast<UBehaviorTree>(ServiceInstance->GetOuter()) == NULL)
{
ServiceInstance->Rename(NULL, BTAsset);
}
ServiceInstance->InitializeNode(RootNode, *ExecutionIndex, 0, TreeDepth);
*ExecutionIndex += 1;
RootNode->Services.Add(ServiceInstance);
}
}
}
// gather all nodes
int32 ChildIdx = 0;
for (int32 PinIdx = 0; PinIdx < RootEdNode->Pins.Num(); PinIdx++)
{
UEdGraphPin* Pin = RootEdNode->Pins[PinIdx];
if (Pin->Direction != EGPD_Output)
{
continue;
}
// sort connections so that they're organized the same as user can see in the editor
Pin->LinkedTo.Sort(FCompareNodeXLocation());
for (int32 Index = 0; Index < Pin->LinkedTo.Num(); ++Index)
{
UBehaviorTreeGraphNode* GraphNode = Cast<UBehaviorTreeGraphNode>(Pin->LinkedTo[Index]->GetOwningNode());
if (GraphNode == NULL)
{
continue;
}
UBTTaskNode* TaskInstance = Cast<UBTTaskNode>(GraphNode->NodeInstance);
if (TaskInstance && Cast<UBehaviorTree>(TaskInstance->GetOuter()) == NULL)
{
TaskInstance->Rename(NULL, BTAsset);
}
UBTCompositeNode* CompositeInstance = Cast<UBTCompositeNode>(GraphNode->NodeInstance);
if (CompositeInstance && Cast<UBehaviorTree>(CompositeInstance->GetOuter()) == NULL)
{
CompositeInstance->Rename(NULL, BTAsset);
}
if (TaskInstance == NULL && CompositeInstance == NULL)
{
continue;
}
// collect decorators
TArray<UBTDecorator*> DecoratorInstances;
TArray<FBTDecoratorLogic> DecoratorOperations;
CollectDecorators(BTAsset, GraphNode, DecoratorInstances, DecoratorOperations, true, RootNode, ExecutionIndex, TreeDepth, ChildIdx);
// store child data
RootNode->Children.AddZeroed();
FBTCompositeChild& ChildInfo = RootNode->Children[ChildIdx];
ChildInfo.ChildComposite = CompositeInstance;
ChildInfo.ChildTask = TaskInstance;
ChildInfo.Decorators = DecoratorInstances;
ChildInfo.DecoratorOps = DecoratorOperations;
ChildIdx++;
UBTNode* ChildNode = CompositeInstance ? (UBTNode*)CompositeInstance : (UBTNode*)TaskInstance;
if (ChildNode && Cast<UBehaviorTree>(ChildNode->GetOuter()) == NULL)
{
ChildNode->Rename(NULL, BTAsset);
}
InitializeInjectedNodes(GraphNode, RootNode, *ExecutionIndex, TreeDepth, ChildIdx);
// special case: subtrees
UBTTask_RunBehavior* SubtreeTask = Cast<UBTTask_RunBehavior>(TaskInstance);
if (SubtreeTask)
{
*ExecutionIndex += SubtreeTask->GetInjectedNodesCount();
}
ChildNode->InitializeNode(RootNode, *ExecutionIndex, 0, TreeDepth);
*ExecutionIndex += 1;
VerifyDecorators(GraphNode);
if (CompositeInstance)
{
CreateChildren(BTAsset, CompositeInstance, GraphNode, ExecutionIndex, TreeDepth + 1);
CompositeInstance->InitializeComposite((*ExecutionIndex) - 1);
}
}
}
}
void RebuildExecutionOrder(UBehaviorTreeGraphNode* RootEdNode, UBTCompositeNode* RootNode, uint16* ExecutionIndex, uint8 TreeDepth)
{
if (RootEdNode == NULL || RootEdNode == NULL)
{
return;
}
// collect services
if (RootEdNode->Services.Num())
{
for (int32 i = 0; i < RootEdNode->Services.Num(); i++)
{
UBTService* ServiceInstance = RootEdNode->Services[i] ? Cast<UBTService>(RootEdNode->Services[i]->NodeInstance) : NULL;
if (ServiceInstance)
{
ServiceInstance->InitializeNode(RootNode, *ExecutionIndex, 0, TreeDepth);
*ExecutionIndex += 1;
}
}
}
// gather all nodes
int32 ChildIdx = 0;
for (int32 PinIdx = 0; PinIdx < RootEdNode->Pins.Num(); PinIdx++)
{
UEdGraphPin* Pin = RootEdNode->Pins[PinIdx];
if (Pin->Direction != EGPD_Output)
{
continue;
}
// sort connections so that they're organized the same as user can see in the editor
TArray<UEdGraphPin*> SortedPins = Pin->LinkedTo;
SortedPins.Sort(FCompareNodeXLocation());
for (int32 Index = 0; Index < SortedPins.Num(); ++Index)
{
UBehaviorTreeGraphNode* GraphNode = Cast<UBehaviorTreeGraphNode>(SortedPins[Index]->GetOwningNode());
if (GraphNode == NULL)
{
continue;
}
UBTTaskNode* TaskInstance = Cast<UBTTaskNode>(GraphNode->NodeInstance);
UBTCompositeNode* CompositeInstance = Cast<UBTCompositeNode>(GraphNode->NodeInstance);
UBTNode* ChildNode = CompositeInstance ? (UBTNode*)CompositeInstance : (UBTNode*)TaskInstance;
if (ChildNode == NULL)
{
continue;
}
// collect decorators
TArray<UBTDecorator*> DecoratorInstances;
TArray<FBTDecoratorLogic> DecoratorOperations;
CollectDecorators(NULL, GraphNode, DecoratorInstances, DecoratorOperations, true, RootNode, ExecutionIndex, TreeDepth, ChildIdx);
InitializeInjectedNodes(GraphNode, RootNode, *ExecutionIndex, TreeDepth, ChildIdx);
// special case: subtrees
UBTTask_RunBehavior* SubtreeTask = Cast<UBTTask_RunBehavior>(TaskInstance);
if (SubtreeTask)
{
*ExecutionIndex += SubtreeTask->GetInjectedNodesCount();
}
ChildNode->InitializeNode(RootNode, *ExecutionIndex, 0, TreeDepth);
*ExecutionIndex += 1;
ChildIdx++;
if (CompositeInstance)
{
RebuildExecutionOrder(GraphNode, CompositeInstance, ExecutionIndex, TreeDepth + 1);
CompositeInstance->InitializeComposite((*ExecutionIndex) - 1);
}
}
}
}
static void InitializeNodeHelper(UBTCompositeNode* ParentNode, UBTNode* NodeOb,
uint8 TreeDepth, uint16& ExecutionIndex, TArray<FNodeInitializationData>& InitList,
UBehaviorTree& TreeAsset, UObject* NodeOuter)
{
// special case: subtrees
UBTTask_RunBehavior* SubtreeTask = Cast<UBTTask_RunBehavior>(NodeOb);
if (SubtreeTask)
{
ExecutionIndex += SubtreeTask->GetInjectedNodesCount();
}
InitList.Add(FNodeInitializationData(NodeOb, ParentNode, ExecutionIndex, TreeDepth, NodeOb->GetInstanceMemorySize(), NodeOb->GetSpecialMemorySize()));
NodeOb->InitializeFromAsset(TreeAsset);
ExecutionIndex++;
UBTCompositeNode* CompositeOb = Cast<UBTCompositeNode>(NodeOb);
if (CompositeOb)
{
for (int32 ServiceIndex = 0; ServiceIndex < CompositeOb->Services.Num(); ServiceIndex++)
{
if (CompositeOb->Services[ServiceIndex] == NULL)
{
UE_LOG(LogBehaviorTree, Warning, TEXT("%s has missing service node! (parent: %s)"),
*TreeAsset.GetName(), *UBehaviorTreeTypes::DescribeNodeHelper(CompositeOb));
CompositeOb->Services.RemoveAt(ServiceIndex, 1, false);
ServiceIndex--;
continue;
}
UBTService* Service = Cast<UBTService>(StaticDuplicateObject(CompositeOb->Services[ServiceIndex], NodeOuter, TEXT("None")));;
CompositeOb->Services[ServiceIndex] = Service;
InitList.Add(FNodeInitializationData(Service, CompositeOb, ExecutionIndex, TreeDepth,
Service->GetInstanceMemorySize(), Service->GetSpecialMemorySize()));
Service->InitializeFromAsset(TreeAsset);
ExecutionIndex++;
}
for (int32 ChildIndex = 0; ChildIndex < CompositeOb->Children.Num(); ChildIndex++)
{
FBTCompositeChild& ChildInfo = CompositeOb->Children[ChildIndex];
for (int32 DecoratorIndex = 0; DecoratorIndex < ChildInfo.Decorators.Num(); DecoratorIndex++)
{
if (ChildInfo.Decorators[DecoratorIndex] == NULL)
{
UE_LOG(LogBehaviorTree, Warning, TEXT("%s has missing decorator node! (parent: %s, branch: %d)"),
*TreeAsset.GetName(), *UBehaviorTreeTypes::DescribeNodeHelper(CompositeOb), ChildIndex);
ChildInfo.Decorators.RemoveAt(DecoratorIndex, 1, false);
DecoratorIndex--;
continue;
}
UBTDecorator* Decorator = Cast<UBTDecorator>(StaticDuplicateObject(ChildInfo.Decorators[DecoratorIndex], NodeOuter, TEXT("None")));
ChildInfo.Decorators[DecoratorIndex] = Decorator;
InitList.Add(FNodeInitializationData(Decorator, CompositeOb, ExecutionIndex, TreeDepth,
Decorator->GetInstanceMemorySize(), Decorator->GetSpecialMemorySize()));
Decorator->InitializeFromAsset(TreeAsset);
Decorator->InitializeDecorator(ChildIndex);
ExecutionIndex++;
}
UBTNode* ChildNode = NULL;
if (ChildInfo.ChildComposite)
{
ChildInfo.ChildComposite = Cast<UBTCompositeNode>(StaticDuplicateObject(ChildInfo.ChildComposite, NodeOuter, TEXT("None")));
ChildNode = ChildInfo.ChildComposite;
}
else if (ChildInfo.ChildTask)
{
ChildInfo.ChildTask = Cast<UBTTaskNode>(StaticDuplicateObject(ChildInfo.ChildTask, NodeOuter, TEXT("None")));
ChildNode = ChildInfo.ChildTask;
}
if (ChildNode)
{
InitializeNodeHelper(CompositeOb, ChildNode, TreeDepth + 1, ExecutionIndex, InitList, TreeAsset, NodeOuter);
}
}
CompositeOb->InitializeComposite(ExecutionIndex - 1);
}
}