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);
}
}
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 UGameplayTask::InitTask(IGameplayTaskOwnerInterface& InTaskOwner, uint8 InPriority)
{
Priority = InPriority;
TaskOwner = InTaskOwner;
UGameplayTasksComponent* GTComponent = InTaskOwner.GetGameplayTasksComponent(*this);
TasksComponent = GTComponent;
bOwnedByTasksComponent = (TaskOwner == GTComponent);
TaskState = EGameplayTaskState::AwaitingActivation;
if (bClaimRequiredResources)
{
ClaimedResources.AddSet(RequiredResources);
}
InTaskOwner.OnTaskInitialized(*this);
if (bOwnedByTasksComponent == false && GTComponent != nullptr)
{
GTComponent->OnTaskInitialized(*this);
}
}
void UGameplayTask::InitTask(IGameplayTaskOwnerInterface& InTaskOwner, uint8 InPriority)
{
Priority = InPriority;
TaskOwner = InTaskOwner;
TaskState = EGameplayTaskState::AwaitingActivation;
if (bClaimRequiredResources)
{
ClaimedResources.AddSet(RequiredResources);
}
// call owner.OnGameplayTaskInitialized before accessing owner.GetGameplayTasksComponent, this is required for child tasks
InTaskOwner.OnGameplayTaskInitialized(*this);
UGameplayTasksComponent* GTComponent = InTaskOwner.GetGameplayTasksComponent(*this);
TasksComponent = GTComponent;
bOwnedByTasksComponent = (TaskOwner == GTComponent);
// make sure that task component knows about new task
if (GTComponent && !bOwnedByTasksComponent)
{
GTComponent->OnGameplayTaskInitialized(*this);
}
}
void UAITask::InitAITask(AAIController& AIOwner, IGameplayTaskOwnerInterface& InTaskOwner)
{
InitAITask(AIOwner, InTaskOwner, InTaskOwner.GetGameplayTaskDefaultPriority());
}