// updates the task queue
public void Update()
{
// if we're out of steps, we can't update anything
if (steps.Count == 0)
{
return;
}
// see the next step and update its timer
Step s = steps.Peek();
s.Timer += Time.deltaTime;
// handle the step
switch (s.Type)
{
// actions just get invoked
case StepType.Action:
s.Action();
s.Action = null;
stepCache.Push(steps.Dequeue());
break;
// timers check for a specific time before moving on
case StepType.TimeWait:
if (s.Timer >= s.Length)
{
stepCache.Push(steps.Dequeue());
}
break;
// conditions require a delegate to return true to move on
case StepType.ConditionWait:
if (s.Condition(s.Timer))
{
s.Condition = null;
stepCache.Push(steps.Dequeue());
}
break;
default:
break;
}
}
internal async Task ExecuteStepAsync(Step step)
{
try
{
PreExecution(step);
if (step.ActionAsync == null && step.Action != null)
{
await Task.Run(() => { step.Action(step); });
}
else
{
await step.ActionAsync(step);
}
PostExecution(step);
}
catch (Exception ex)
{
stepExceptionHandler.HandleException(this, step, ex);
}
}