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Learn how to use NodeCanvas

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  1. Getting Started
    1. Framework Concepts
    2. The GraphOwner Component
    3. The "Self" Parameter
    4. BBParameters
    5. Visual Debugging
  2. The Editor
    1. Controls & Shortcuts
    2. Assigning Tasks
    3. Canvas Groups
  3. The Blackboard
    1. Data Binding Variables
    2. Blackboard Parenting
    3. Global Variables
    4. Dynamic Variables
    5. Network Sync
    6. Save & Load
  4. Tasks (Actions & Conditions)
    1. List of Tasks
    2. Creating Custom Tasks
    3. Using Task Attributes
    4. Using BBParameters in Tasks
    5. Creating Generic Tasks
    6. The Script Control Tasks
    7. Using FixedUpdate and OnGUI
  5. Behaviour Trees
    1. BT Nodes Reference
    2. Reactive Evaluation
    3. Creating Custom BT Nodes
  6. State Machines (FSM)
    1. FSM Node Reference
    2. FSM Callbacks
    3. Creating Custom FSM Nodes
  7. Dialogue Trees
    1. Dialogue Tree Nodes Reference
  8. Mapping Sub Graph Variables
  9. Using Graph Events
  10. Using Signal Events
  11. Working with Custom Types
  12. Working with AOT Platforms
  13. Creating Custom Object Drawers
  14. JSON Import/Export
  15. Scripting
    1. Interfacing with your code
    2. GraphOwner API
    3. Blackboard API
    4. Runtime Instantiation Tips
    5. Creating a Behaviour in Code
  16. FlowCanvas Integration
    1. Behaviour Tree -> FlowScript
    2. FSM -> FlowScript
    3. Using Tasks in FlowScripts
  17. Playmaker Integration
  18. Full API

Using BBParameters in Tasks

BBParameters are a great way of making your tasks be more dynamic by having the ability to use blackboard variables in place of simple value fields within your task. In short, when declaring a field of some type, you would instead use BBParameter<T>, which will allow you to either select a Blackboard variable or define a value directly. Here is the same delay example as before, but using a BBParameter<float> instead.

 

The following “Move To Target” action task for example, has two BBParameters defined, those being “Target” and “Speed”. Here, Target has been linked to a Blackboard variable, while Speed is set directly to 4.

BBParameter

Remember that you also have access to the Blackboard directly, through the inherited .blackboard property if you so require to read/write manually to its variables.

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