BehaviorNode

Remarks

Its index is its priority. Nodes are laid out depth-first in pre-order, so node 4 outranks node 9 because it is earlier in the walk — which is exactly what "left to right, top to bottom" means to the person who drew the tree. There is no priority field, and therefore no way for the two to disagree.

And a subtree is a contiguous range. LastDescendant makes "is X inside Y's subtree" two comparisons rather than a walk, which is what makes the abort test in doc 37 § D6 affordable at a thousand agents.

Fields and properties (17)

• public Symbol Name

  What it is called. For diagnostics and the editor; nothing in a step reads it.

• public BehaviorNodeKind Kind

  Composite or task.

• public BehaviorCompositeKind Composite

  How it walks its children, when it is a composite.

• public ushort Action

  What it runs, when it is a task. An index into the agent's action registry.

• public ParallelFinishMode FinishMode

  What a Parallel does when its main task ends.

• public int Parent

  Its parent's index, or -1 for the root.

• public int FirstChild

  Its first child's index, or -1.

• public int ChildCount

  How many children it has.

• public int LastDescendant

  The highest index in its subtree — itself, when it is a leaf.

• public int DecoratorStart

  Where its decorators start in the template's decorator table.

• public int DecoratorCount

  How many decorators are attached to it.

• public int ServiceStart

  Where its services start in the template's service table.

• public int ServiceCount

  How many services are attached to it.

• public int MemoryOffset

  Where its state starts in an agent's memory block.

• public int MemorySize

  How many bytes of that block are its own.

• public float Weight

  Its share of a RandomSelector's draw.

• public int NestedSlot

  Which nested-instance slot it owns, when it runs a tree named by a key.

Used by (11)

• AiBreakpointsVixen.Ai
• AiSnapshotsVixen.Ai
• AiSystemTreeTestsVixen.Ai.Tests
• AuthorableNodeTestsVixen.Ai.Tests
• BehaviorTreeAbortOrderingTestsVixen.Ai.Tests
• BehaviorTreeCompilerTestsVixen.Ai.Tests
• BehaviorTreeDeterminismTestsVixen.Ai.Tests
• BehaviorTreeInstanceVixen.Ai
• BehaviorTreeTemplateVixen.Ai
• CompileStateVixen.Ai
• TreeHarnessVixen.Ai.Tests