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namespace BehaviorDesigner.Runtime.Tasks
{
[TaskDescription("The inverter task will invert the return value of the child task after it has finished executing. " +
"If the child returns success, the inverter task will return failure. If the child returns failure, the inverter task will return success.")]
[HelpURL("http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=36")]
[TaskIcon("{SkinColor}InverterIcon.png")]
public class Inverter : Decorator
{
// The status of the child after it has finished running.
private TaskStatus executionStatus = TaskStatus.Inactive;
public override bool CanExecute()
{
// Continue executing until the child task returns success or failure.
return executionStatus == TaskStatus.Inactive || executionStatus == TaskStatus.Running;
}
public override void OnChildExecuted(TaskStatus childStatus)
{
// Update the execution status after a child has finished running.
executionStatus = childStatus;
}
public override TaskStatus Decorate(TaskStatus status)
{
// Invert the task status.
if (status == TaskStatus.Success) {
return TaskStatus.Failure;
} else if (status == TaskStatus.Failure) {
return TaskStatus.Success;
}
return status;
}
public override void OnEnd()
{
// Reset the execution status back to its starting values.
executionStatus = TaskStatus.Inactive;
}
}
}
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