Enum BlackboardCondition 

pub enum BlackboardCondition {
    HasKey(String),
    NotHasKey(String),
    KeyEquals(String, BlackboardValue),
    KeyGreaterThan(String, f64),
    KeyLessThan(String, f64),
    KeyInRange(String, f64, f64),
    IsTrue(String),
    IsFalse(String),
    And(Box<BlackboardCondition>, Box<BlackboardCondition>),
    Or(Box<BlackboardCondition>, Box<BlackboardCondition>),
    Not(Box<BlackboardCondition>),
}

A condition that can be evaluated against a Blackboard. Primarily for use in behavior tree guard nodes.

Variants

HasKey(String)

True if the key exists (and has not expired).

NotHasKey(String)

True if the key does NOT exist (or has expired).

KeyEquals(String, BlackboardValue)

True if the value at key equals the given BlackboardValue.

KeyGreaterThan(String, f64)

True if the numeric value at key is strictly greater than threshold.

KeyLessThan(String, f64)

True if the numeric value at key is strictly less than threshold.

KeyInRange(String, f64, f64)

True if the numeric value at key is >= min and <= max.

IsTrue(String)

True if the boolean at key is true.

IsFalse(String)

True if the boolean at key is false (or absent).

And(Box<BlackboardCondition>, Box<BlackboardCondition>)

Logical AND of two conditions.

Or(Box<BlackboardCondition>, Box<BlackboardCondition>)

Logical OR of two conditions.

Not(Box<BlackboardCondition>)

Logical NOT of a condition.

Implementations

impl BlackboardCondition

pub fn evaluate(&self, bb: &Blackboard) -> bool

Evaluate this condition against the given blackboard.

pub fn and(self, other: BlackboardCondition) -> BlackboardCondition

pub fn or(self, other: BlackboardCondition) -> BlackboardCondition

pub fn not(self) -> BlackboardCondition

Trait Implementations

impl Clone for BlackboardCondition

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BlackboardCondition

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for BlackboardCondition

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BlackboardCondition