/// <summary>
/// 一般 task自己会调用此方法
/// TODO 注意, 在调用本方法之前, 需要派发"on completed" delegates
/// </summary>
public void EndTask()
{
if (IsFinished())
{
return;
}
TaskState = EGameplayTaskState.Finished;
}
public UGameplayTask()
{
bTickingTask = false;
bOwnedByTasksComponent = false;
bClaimRequiredResources = true;
bOwnerFinished = false;
TaskState = EGameplayTaskState.Uninitialized;
ResourceOverlapPolicy = ETaskResourceOverlapPolicy.StartOnTop;
Priority = FGameplayTaskPriority.DefaultPriority;
}
/// <summary>
/// 如果owner "ended", 那么本方法会被调用. 在OnDestroy中调用
/// </summary>
public void TaskOwnerEnded()
{
if (IsFinished())
{
return;
}
bOwnerFinished = true;
// mark as finished, just to be on the safe side
TaskState = EGameplayTaskState.Finished;
}
/// <summary>
/// 激活任务的入口
/// </summary>
private void PerformActivation()
{
if (IsActive())
{
return;
}
TaskState = EGameplayTaskState.Active;
Activate();
//有些立即完成的任务, 激活即完成
//如果没完成, 我们才跟component打交道
if (IsFinished() == false)
{
TasksComponent.OnGameplayTaskActivated(this);
}
}
/// <summary>
/// 初始化任务, 但不激活. 激活需要调用Activate方法
/// </summary>
public void InitTask(IGameplayTaskOwnerInterface InTaskOwner, int InPriority)
{
//Priority = InPriority;
TaskOwner = InTaskOwner;
TaskState = EGameplayTaskState.AwaitingActivation;
if (bClaimRequiredResources)
{
ClaimedResources.AddSet(RequiredResources);
}
InTaskOwner.OnGameplayTaskInitialized(this);
TasksComponent = InTaskOwner.GetGameplayTasksComponent(this);
bOwnedByTasksComponent = (TaskOwner == TasksComponent);
//避免两次调用OnGameplayTaskInitialized方法
if (!bOwnedByTasksComponent)
{
TasksComponent.OnGameplayTaskInitialized(this);
}
}
public static string GetTaskStateName(EGameplayTaskState Value)
{
return("");
}
protected virtual void Resume()
{
TaskState = EGameplayTaskState.Active;
TasksComponent.OnGameplayTaskActivated(this);
}
// protected by design. Not meant to be called outside from GameplayTaskComponent mechanics
protected virtual void Pause()
{
TaskState = EGameplayTaskState.Paused;
TasksComponent.OnGameplayTaskDeactivated(this);
}
/* End and CleanUp the task - may be called by the task itself or by the task owner if the owner is ending.
* IMPORTANT! Do NOT call directly! Call EndTask() or TaskOwnerEnded()
* IMPORTANT! When overriding this function make sure to call Super.OnDestroy(bOwnerFinished) as the last thing,
* since the function internally marks the task as "Pending Kill", and this may interfere with internal BP mechanics
*/
protected virtual void OnDestroy(bool bInOwnerFinished)
{
TaskState = EGameplayTaskState.Finished;
TasksComponent.OnGameplayTaskDeactivated(this);
}