void UGameplayTasksComponent::AddTaskToPriorityQueue(UGameplayTask& NewTask)
{
const bool bStartOnTopOfSamePriority = (NewTask.GetResourceOverlapPolicy() == ETaskResourceOverlapPolicy::StartOnTop);
int32 InsertionPoint = INDEX_NONE;
for (int32 Idx = 0; Idx < TaskPriorityQueue.Num(); ++Idx)
{
if (TaskPriorityQueue[Idx] == nullptr)
{
continue;
}
if ((bStartOnTopOfSamePriority && TaskPriorityQueue[Idx]->GetPriority() <= NewTask.GetPriority())
|| (!bStartOnTopOfSamePriority && TaskPriorityQueue[Idx]->GetPriority() < NewTask.GetPriority()))
{
TaskPriorityQueue.Insert(&NewTask, Idx);
InsertionPoint = Idx;
break;
}
}
if (InsertionPoint == INDEX_NONE)
{
TaskPriorityQueue.Add(&NewTask);
}
}
void UGameplayTasksComponent::OnGameplayTaskActivated(UGameplayTask& Task)
{
// process events after finishing all operations
FEventLock ScopeEventLock(this);
if (Task.IsTickingTask())
{
check(TickingTasks.Contains(&Task) == false);
TickingTasks.Add(&Task);
// If this is our first ticking task, set this component as active so it begins ticking
if (TickingTasks.Num() == 1)
{
UpdateShouldTick();
}
}
if (Task.IsSimulatedTask())
{
check(SimulatedTasks.Contains(&Task) == false);
SimulatedTasks.Add(&Task);
}
IGameplayTaskOwnerInterface* TaskOwner = Task.GetTaskOwner();
if (!Task.IsOwnedByTasksComponent() && TaskOwner)
{
TaskOwner->OnGameplayTaskActivated(Task);
}
}
//----------------------------------------------------------------------//
// Priority and resources handling
//----------------------------------------------------------------------//
void UGameplayTasksComponent::AddTaskReadyForActivation(UGameplayTask& NewTask)
{
UE_VLOG(this, LogGameplayTasks, Log, TEXT("AddTaskReadyForActivation %s"), *NewTask.GetName());
ensure(NewTask.RequiresPriorityOrResourceManagement() == true);
TaskEvents.Add(FGameplayTaskEventData(EGameplayTaskEvent::Add, NewTask));
// trigger the actual processing only if it was the first event added to the list
if (TaskEvents.Num() == 1 && CanProcessEvents())
{
ProcessTaskEvents();
}
}
static FString DescribeTaskHelper(const UGameplayTask& TaskOb)
{
const UObject* OwnerOb = Cast<const UObject>(TaskOb.GetTaskOwner());
return FString::Printf(TEXT("\n {white}%s%s {%s}%s:%d {white}Owner:{yellow}%s {white}Res:{yellow}%s"),
*TaskOb.GetName(),
TaskOb.GetInstanceName() != NAME_None ? *FString::Printf(TEXT(" {yellow}[%s]"), *TaskOb.GetInstanceName().ToString()) : TEXT(""),
TaskOb.IsActive() ? TEXT("green") : TEXT("orange"),
*TaskOb.GetTaskStateName(), TaskOb.GetPriority(),
*GetNameSafe(OwnerOb),
TaskOb.GetRequiredResources().IsEmpty() ? TEXT("None") : *TaskOb.GetRequiredResources().GetDebugDescription());
}
void UGameplayTasksComponent::EndAllResourceConsumingTasksOwnedBy(const IGameplayTaskOwnerInterface& TaskOwner)// , bool bNotifyOwner)
{
{
FEventLock ScopeEventLock(this);
// can't reuse FindAllTasksOwnedBy here, it's important to remove from queue immediately
for (int32 Idx = TaskPriorityQueue.Num() - 1; Idx >= 0; Idx--)
{
if (TaskPriorityQueue[Idx] && TaskPriorityQueue[Idx]->GetTaskOwner() == &TaskOwner)
{
UGameplayTask* Task = TaskPriorityQueue[Idx];
TaskPriorityQueue[Idx] = nullptr;
Task->TaskOwnerEnded();
}
}
}
UpdateTaskActivations();
}
void UGameplayTasksComponent::RemoveResourceConsumingTask(UGameplayTask& Task)
{
UE_VLOG(this, LogGameplayTasks, Log, TEXT("RemoveResourceConsumingTask %s"), *Task.GetName());
TaskEvents.Add(FGameplayTaskEventData(EGameplayTaskEvent::Remove, Task));
// trigger the actual processing only if it was the first event added to the list
if (TaskEvents.Num() == 1 && CanProcessEvents())
{
ProcessTaskEvents();
}
}
void AAIController::UnclaimTaskResource(TSubclassOf<UGameplayTaskResource> ResourceClass)
{
if (CachedGameplayTasksComponent)
{
const uint8 ResourceID = UGameplayTaskResource::GetResourceID(ResourceClass);
if (ScriptClaimedResources.HasID(ResourceID) == true)
{
ScriptClaimedResources.RemoveID(ResourceID);
UE_VLOG(this, LogGameplayTasks, Log, TEXT("UnclaimTaskResource %s"), *GetNameSafe(*ResourceClass));
UGameplayTask* ResourceTask = CachedGameplayTasksComponent->FindResourceConsumingTaskByName(ResourceClass->GetFName());
if (ResourceTask)
{
ResourceTask->EndTask();
}
UE_CVLOG(ResourceTask == nullptr, this, LogGameplayTasks, Warning, TEXT("UnclaimTaskResource failed to find UGameplayTask_ClaimResource instance"));
}
}
}
//----------------------------------------------------------------------//
// UBTTaskNode IGameplayTaskOwnerInterface
//----------------------------------------------------------------------//
void UBTTaskNode::OnTaskDeactivated(UGameplayTask& Task)
{
ensure(Task.GetTaskOwner() == this);
UBehaviorTreeComponent* BTComp = GetBTComponentForTask(Task);
if (BTComp)
{
// this is a super-default behavior. Specific task will surely like to
// handle this themselves, finishing with specific result
const EBTTaskStatus::Type Status = BTComp->GetTaskStatus(this);
FinishLatentTask(*BTComp, Status == EBTTaskStatus::Aborting ? EBTNodeResult::Aborted : EBTNodeResult::Succeeded);
}
}
void UGameplayTask::OnGameplayTaskDeactivated(UGameplayTask& Task)
{
// cleanup after deactivation
if (&Task == ChildTask)
{
UE_VLOG(GetGameplayTasksComponent(), LogGameplayTasks, Verbose, TEXT("%s> Child task deactivated: %s (state: %s)"), *GetName(), *Task.GetName(), *Task.GetTaskStateName());
if (Task.IsFinished())
{
ChildTask = nullptr;
}
}
}
EGameplayTaskRunResult UGameplayTasksComponent::RunGameplayTask(IGameplayTaskOwnerInterface& TaskOwner, UGameplayTask& Task, uint8 Priority, FGameplayResourceSet AdditionalRequiredResources, FGameplayResourceSet AdditionalClaimedResources)
{
const FText NoneText = FText::FromString(TEXT("None"));
if (Task.GetState() == EGameplayTaskState::Paused || Task.GetState() == EGameplayTaskState::Active)
{
// return as success if already running for the same owner, failure otherwise
return Task.GetTaskOwner() == &TaskOwner
? (Task.GetState() == EGameplayTaskState::Paused ? EGameplayTaskRunResult::Success_Paused : EGameplayTaskRunResult::Success_Active)
: EGameplayTaskRunResult::Error;
}
// this is a valid situation if the task has been created via "Construct Object" mechanics
if (Task.GetState() == EGameplayTaskState::Uninitialized)
{
Task.InitTask(TaskOwner, Priority);
}
Task.AddRequiredResourceSet(AdditionalRequiredResources);
Task.AddClaimedResourceSet(AdditionalClaimedResources);
Task.ReadyForActivation();
switch (Task.GetState())
{
case EGameplayTaskState::AwaitingActivation:
case EGameplayTaskState::Paused:
return EGameplayTaskRunResult::Success_Paused;
break;
case EGameplayTaskState::Active:
return EGameplayTaskRunResult::Success_Active;
break;
case EGameplayTaskState::Finished:
return EGameplayTaskRunResult::Success_Active;
break;
}
return EGameplayTaskRunResult::Error;
}
void UGameplayTasksComponent::OnGameplayTaskDeactivated(UGameplayTask& Task)
{
// process events after finishing all operations
FEventLock ScopeEventLock(this);
const bool bIsFinished = (Task.GetState() == EGameplayTaskState::Finished);
if (Task.GetChildTask() && bIsFinished)
{
if (Task.HasOwnerFinished())
{
Task.GetChildTask()->TaskOwnerEnded();
}
else
{
Task.GetChildTask()->EndTask();
}
}
if (Task.IsTickingTask())
{
// If we are removing our last ticking task, set this component as inactive so it stops ticking
TickingTasks.RemoveSingleSwap(&Task);
}
if (Task.IsSimulatedTask())
{
SimulatedTasks.RemoveSingleSwap(&Task);
}
// Resource-using task
if (Task.RequiresPriorityOrResourceManagement() && bIsFinished)
{
OnTaskEnded(Task);
}
IGameplayTaskOwnerInterface* TaskOwner = Task.GetTaskOwner();
if (!Task.IsOwnedByTasksComponent() && !Task.HasOwnerFinished() && TaskOwner)
{
TaskOwner->OnGameplayTaskDeactivated(Task);
}
UpdateShouldTick();
}
void UGameplayTasksComponent::RemoveTaskFromPriorityQueue(UGameplayTask& Task)
{
const int32 RemovedTaskIndex = TaskPriorityQueue.Find(&Task);
if (RemovedTaskIndex != INDEX_NONE)
{
TaskPriorityQueue.RemoveAt(RemovedTaskIndex, 1, /*bAllowShrinking=*/false);
}
else
{
// take a note and ignore
UE_VLOG(this, LogGameplayTasks, Verbose, TEXT("RemoveTaskFromPriorityQueue for %s called, but it's not in the queue. Might have been already removed"), *Task.GetName());
}
}
void UGameplayTasksComponent::OnTaskEnded(UGameplayTask& Task)
{
ensure(Task.RequiresPriorityOrResourceManagement() == true);
RemoveResourceConsumingTask(Task);
}
void UGameplayTask::OnGameplayTaskInitialized(UGameplayTask& Task)
{
UE_VLOG(GetGameplayTasksComponent(), LogGameplayTasks, Verbose, TEXT("%s> Child task initialized: %s"), *GetName(), *Task.GetName());
// only one child task is allowed
if (ChildTask)
{
UE_VLOG(GetGameplayTasksComponent(), LogGameplayTasks, Verbose, TEXT(">> terminating previous child task: %s"), *ChildTask->GetName());
ChildTask->EndTask();
}
ChildTask = &Task;
}