Namespace Unity.Behavior

Classes

Action

The base class for action nodes used in Behavior Graphs.

BehaviorGraph

BehaviorGraph holds all the runtime graph instances linked together into a complete behaviour defined within a BehaviorAuthoringGraph.

BehaviorGraphAgent

Manages a behavior graph's lifecycle on a GameObject and handles data through blackboard variables.

The BehaviorGraphAgent maintains the following lifecycle states:

- Uninitialized - The graph has been assigned but not instantiated yet

- Initialized - The graph has been instantiated with a unique copy for this agent

- Started - The graph has started running

- Running - The graph is being updated each frame via Tick()

- Ended - The graph has been stopped and is no longer running

Initialization Sequence:

- When a graph is assigned in the Inspector, it's automatically initialized during Awake()

- When assigning a graph via the Graph property at runtime, it's automatically initialized during the next Update()

- You can also explicitly control initialization by calling Init() manually

Blackboard Variable Handling:

- Before initialization: SetVariableValue() sets agent-level overrides (visible in the Inspector)

- After initialization: SetVariableValue() sets values in the instanced graph's blackboard

BehaviorGraphCollisionEvents

This class is used to dispatch collision events to the behavior graph.

Blackboard

A data structure holding variables used by the Behavior Graph.

BlackboardEnumAttribute

The attribute specified when creating Blackboard enums. Apply this attribute above newly created enums to ensure they can be recognized and parsed by the Blackboard.

BlackboardVariable<DataType>

A base class for blackboard variables serialized by value.

ComparisonAttribute

The ComparisonAttribute contains metadata for the comparison operator element used in conditions.

Composite

Composite nodes serves as a control structure that manages the flow and organization of other nodes within the tree.

Condition

The base class for conditions used in Conditional and Abort nodes.

ConditionAttribute

The ConditionAttribute contains metadata for conditions used in Behavior graphs.

ConditionUtils

A utility class for conditions used in Conditional nodes.

DynamicBlackboardVariableOverride

A variable override used for initializing Blackboards on subgraphs that are running dynamically.

EnumLinkField<TValueType>

A link field class specialized for enum types.

EventAction

Event actions are used to send and receive event messages.

EventChannel

Event channels are used to send and receive event messages.

EventChannelBase

Event channels are used to send and receive event messages.

EventChannelDescriptionAttribute

The EventChannelDescriptionAttribute contains metadata for event channels used in Behavior graphs.

EventChannel<T0>

Generic implementation of EventChannelBase. Event channels are used to send and receive event messages.

EventChannel<T0, T1>

Generic implementation of EventChannelBase. Event channels are used to send and receive event messages.

EventChannel<T0, T1, T2>

Generic implementation of EventChannelBase. Event channels are used to send and receive event messages.

EventChannel<T0, T1, T2, T3>

Generic implementation of EventChannelBase. Event channels are used to send and receive event messages.

Join

A node that can have multiple inputs nodes.

Node

A base class for behaviour nodes used in the Behavior graph.

NodeDescriptionAttribute

The NodeDescriptionAttribute contains metadata for nodes used in Behavior graphs.

RuntimeBlackboardAsset

RuntimeBlackboardAsset is the runtime version of BehaviorBlackboardAsset. The data is baked at authoring time.

RuntimeSerializationUtility

Contains all interfaces and helper objects for runtime serialization of behavior graphs.

RuntimeSerializationUtility.JsonBehaviorSerializer

Implementation for JSON serializer.

TriggerEventAction

Event actions are used to send and receive event messages.

WaitForAllComposite

Activates its child when all parents have started this node. It cannot restart until the child's subgraph has ended.

Interfaces

IConditionSerializationCallbackReceiver

Interface for conditions use by Behavior nodes that need to handle custom serialization/deserialization logic. Implement this interface on condition classes that contain state which cannot be automatically serialized, or that need to pre-process data before serialization.

Note: These callbacks are only invoked for conditions that are part of a running node. Standard runtime registration logic should still be implemented in the Condition's OnStart/OnEnd methods.

Namespace Unity.Behavior

Classes

Interfaces

Enums

Delegates