BehaviorTree
Core Library to create and execute Behavior Trees
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BT::ForceFailureNode Class Reference

The ForceFailureNode always returns FAILURE when the child completes, regardless of whether the child returned SUCCESS or FAILURE. More...

#include <force_failure_node.h>

Inheritance diagram for BT::ForceFailureNode:
Collaboration diagram for BT::ForceFailureNode:

Public Member Functions

 ForceFailureNode (const std::string &name)
 
- Public Member Functions inherited from BT::DecoratorNode
 DecoratorNode (const std::string &name, const NodeConfig &config)
 
 DecoratorNode (const DecoratorNode &)=delete
 
DecoratorNodeoperator= (const DecoratorNode &)=delete
 
 DecoratorNode (DecoratorNode &&)=delete
 
DecoratorNodeoperator= (DecoratorNode &&)=delete
 
void setChild (TreeNode *child)
 
const TreeNodechild () const
 
TreeNodechild ()
 
virtual void halt () override
 The method used to interrupt the execution of this node.
 
void haltChild ()
 Same as resetChild()
 
virtual NodeType type () const override
 
NodeStatus executeTick () override
 The method that should be used to invoke tick() and setStatus();.
 
void resetChild ()
 
- Public Member Functions inherited from BT::TreeNode
 TreeNode (std::string name, NodeConfig config)
 TreeNode main constructor.
 
 TreeNode (const TreeNode &other)=delete
 
TreeNodeoperator= (const TreeNode &other)=delete
 
 TreeNode (TreeNode &&other) noexcept
 
TreeNodeoperator= (TreeNode &&other) noexcept
 
virtual BT::NodeStatus executeTick ()
 The method that should be used to invoke tick() and setStatus();.
 
void haltNode ()
 
bool isHalted () const
 
NodeStatus status () const
 
const std::string & name () const
 Name of the instance, not the type.
 
BT::NodeStatus waitValidStatus ()
 
virtual NodeType type () const =0
 
StatusChangeSubscriber subscribeToStatusChange (StatusChangeCallback callback)
 subscribeToStatusChange is used to attach a callback to a status change. When StatusChangeSubscriber goes out of scope (it is a shared_ptr) the callback is unsubscribed automatically.
 
void setPreTickFunction (PreTickCallback callback)
 
void setPostTickFunction (PostTickCallback callback)
 
void setTickMonitorCallback (TickMonitorCallback callback)
 
uint16_t UID () const
 
const std::string & fullPath () const
 
const std::string & registrationName () const
 registrationName is the ID used by BehaviorTreeFactory to create an instance.
 
const NodeConfigconfig () const
 
template<typename T >
Result getInput (const std::string &key, T &destination) const
 
template<typename T >
Expected< TimestampgetInputStamped (const std::string &key, T &destination) const
 getInputStamped is similar to getInput(dey, destination), but it returns also the Timestamp object, that can be used to check if a value was updated and when.
 
template<typename T >
Expected< T > getInput (const std::string &key) const
 
template<typename T >
Expected< StampedValue< T > > getInputStamped (const std::string &key) const
 
template<typename T >
Result setOutput (const std::string &key, const T &value)
 setOutput modifies the content of an Output port
 
AnyPtrLocked getLockedPortContent (const std::string &key)
 getLockedPortContent should be used when:
 
StringView getRawPortValue (const std::string &key) const
 
void emitWakeUpSignal ()
 Notify that the tree should be ticked again()
 
bool requiresWakeUp () const
 

Additional Inherited Members

- Public Types inherited from BT::TreeNode
typedef std::shared_ptr< TreeNodePtr
 
using StatusChangeSignal = Signal< TimePoint, const TreeNode &, NodeStatus, NodeStatus >
 
using StatusChangeSubscriber = StatusChangeSignal::Subscriber
 
using StatusChangeCallback = StatusChangeSignal::CallableFunction
 
using PreTickCallback = std::function< NodeStatus(TreeNode &)>
 
using PostTickCallback = std::function< NodeStatus(TreeNode &, NodeStatus)>
 
using TickMonitorCallback = std::function< void(TreeNode &, NodeStatus, std::chrono::microseconds)>
 
- Static Public Member Functions inherited from BT::TreeNode
static bool isBlackboardPointer (StringView str, StringView *stripped_pointer=nullptr)
 Check a string and return true if it matches the pattern: {...}.
 
static StringView stripBlackboardPointer (StringView str)
 
static Expected< StringView > getRemappedKey (StringView port_name, StringView remapped_port)
 
template<class DerivedT , typename... ExtraArgs>
static std::unique_ptr< TreeNodeInstantiate (const std::string &name, const NodeConfig &config, ExtraArgs... args)
 
- Protected Types inherited from BT::TreeNode
using PreScripts = std::array< ScriptFunction, size_t(PreCond::COUNT_)>
 
using PostScripts = std::array< ScriptFunction, size_t(PostCond::COUNT_)>
 
- Protected Member Functions inherited from BT::TreeNode
NodeConfigconfig ()
 
virtual BT::NodeStatus tick ()=0
 Method to be implemented by the user.
 
void resetStatus ()
 Set the status to IDLE.
 
void setRegistrationID (StringView ID)
 
void setWakeUpInstance (std::shared_ptr< WakeUpSignal > instance)
 
void modifyPortsRemapping (const PortsRemapping &new_remapping)
 
void setStatus (NodeStatus new_status)
 setStatus changes the status of the node. it will throw if you try to change the status to IDLE, because your parent node should do that, not the user!
 
PreScripts & preConditionsScripts ()
 
PostScripts & postConditionsScripts ()
 
template<typename T >
parseString (const std::string &str) const
 
- Protected Attributes inherited from BT::DecoratorNode
TreeNodechild_node_
 

Detailed Description

The ForceFailureNode always returns FAILURE when the child completes, regardless of whether the child returned SUCCESS or FAILURE.

  • If the child returns RUNNING, this node returns RUNNING.
  • If the child returns SUCCESS or FAILURE, this node returns FAILURE.

The documentation for this class was generated from the following file: