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);
}
}
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());
}
//----------------------------------------------------------------------//
// 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 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();
}
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;
}