delay_node.h

Go to the documentation of this file.

#pragma once
 
#include "behaviortree_cpp_v3/decorator_node.h"
#include <atomic>
#include "timer_queue.h"
 
namespace BT
{
class DelayNode : public DecoratorNode
{
public:
  DelayNode(const std::string& name, unsigned milliseconds);
 
  DelayNode(const std::string& name, const NodeConfiguration& config);
 
  ~DelayNode() override
  {
    halt();
  }
 
  static PortsList providedPorts()
  {
    return {InputPort<unsigned>("delay_msec", "Tick the child after a few milliseconds")};
  }
  void halt() override
  {
    delay_started_ = false;
    timer_.cancelAll();
    DecoratorNode::halt();
  }
 
private:
  TimerQueue<> timer_;
  uint64_t timer_id_;
 
  virtual BT::NodeStatus tick() override;
 
  bool delay_started_;
  bool delay_complete_;
  bool delay_aborted_;
  unsigned msec_;
  bool read_parameter_from_ports_;
  std::mutex delay_mutex_;
};
 
}   // namespace BT