Struct TreeBuilder 

pub struct TreeBuilder { /* private fields */ }

Fluent builder for assembling BehaviorNode trees.

Example

let root = TreeBuilder::sequence("root")
    .leaf("idle", |_bb, _dt| NodeStatus::Success)
    .selector("patrol_or_attack")
        .leaf("patrol", patrol_fn)
        .leaf("attack", attack_fn)
    .end()
    .build();

Implementations

impl TreeBuilder

pub fn sequence(name: &str) -> Self

Begin a new top-level Sequence.

pub fn selector(name: &str) -> Self

Begin a new top-level Selector.

pub fn parallel(name: &str, policy: ParallelPolicy) -> Self

Begin a new top-level Parallel.

pub fn sequence_child(self, name: &str) -> Self

Push a Sequence child onto the current composite.

pub fn selector_child(self, name: &str) -> Self

Push a Selector child onto the current composite.

pub fn parallel_child(self, name: &str, policy: ParallelPolicy) -> Self

Push a Parallel child onto the current composite.

pub fn decorator(self, name: &str, kind: DecoratorKind) -> Self

Push a Decorator child onto the current composite.

pub fn leaf<F>(self, name: &str, tick_fn: F) -> Self

where F: FnMut(&mut Blackboard, f32) -> NodeStatus + 'static,

Add a leaf node to the current composite or decorator.

pub fn leaf_full<Enter, Tick, Exit>( self, name: &str, enter_fn: Enter, tick_fn: Tick, exit_fn: Exit, ) -> Self

where Enter: FnMut(&mut Blackboard) + 'static, Tick: FnMut(&mut Blackboard, f32) -> NodeStatus + 'static, Exit: FnMut(&mut Blackboard, NodeStatus) + 'static,

Add a full leaf with enter/exit callbacks.

pub fn subtree_ref(self, name: &str) -> Self

Add a subtree reference node.

pub fn node(self, node: BehaviorNode) -> Self

Add an already-built node as a child.

pub fn end(self) -> Self

Close the current composite/decorator and return to the parent.

pub fn build(self) -> BehaviorNode

Finish building and return the root BehaviorNode. Panics if not at the outermost frame.

pub fn into_tree(self, tree_name: &str) -> BehaviorTree

Convenience: build and wrap in a BehaviorTree.