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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. Save & Load
    3. Network Sync
    4. Global Variables
    5. Dynamic Variables
  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
  8. Using Graph Events
  9. Working with Custom Types
  10. Working with AOT Platforms
  11. Creating Custom Object Drawers
  12. JSON Import/Export
  13. Scripting
    1. Interfacing with your code
    2. GraphOwner API
    3. Blackboard API
    4. Runtime Instantiation Tips
    5. Creating a Behaviour in Code
  14. FlowCanvas Integration
    1. Behaviour Tree -> FlowScript
    2. FSM -> FlowScript
    3. Using Tasks in FlowScripts
  15. Playmaker Integration
  16. 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 3.

BBParameter

Remember that you also have access to the Blackboard directly, through the inherited .blackboard property if you so require to read/write manualy to it’s variables.

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