VYN2QOQBFRE5AAQO76D63IV3C4JF3YMXFHJZZ5AHIZOCJRCTFOEAC YDD3LID47IBIIXCMSWAZ3I4H3Q3Y32WXNQBZXVJB6QRFZANVIROQC FH6B7JGNWET7LFWZBWO4FZFXBJPYUWE7Q2M3VLQJSS377YVSUYHAC JTBWS2D5SSRHJD2NL5HJ7XP5ZENXTTALT2BUA2YSEG23LCSMOS3QC X777DPNRXZXD2GEYJE5HZCLTGAD3J2S5SHBNOMAFGI3KTXP3DWIAC ZKF3CN33IANIGHYTNQDTWDIG7ZG6JMRQXTGRHNARW2LZ3U6SXUCAC E3463LP3XTESVA3CDBVBGSM4K5OBKBTS366Z7REZMWPZBNZEG5CQC LWRZHNHAX3O27GSO6GSJRO2KQLLC5D7GT5MMURNK6DZDN4LBORMAC G3FE5YP2OBTWE563KVAJTSUGIYNF3NDOVZSOP2DART725GPZRC3QC NITAKQESE5BLBCSAB4URPEGOF3BX52PKT44LLX3SEQA7CHL3HOIAC AAMZTMKZ5IFWOTPGR3Q57QO6HJUIAXRU4R4NT276A4O4VTL42KEQC MKB2A5XCWBZO2E6QFE6PD36LF3IGMJCGJB5TGMRAPSKCKHS75ISAC R5KHFY6NVDHJJC5WNM4H5MXTVXRRZ2SLGL3LOWHGCEEF66KVBE7AC 2K7MO2JGZKHGDLMNEVXI7G4CP3DJ4DY63PU5QZ4FPZUMWY7ART6AC FIO72ZSANLC3OS5IKSZ4PUAIBFAAHZA6EFGHMHP6YVFGTOJ7PPKQC ELGDDPUWFOH6ELJVCFVNUQJQRB44G66BJXVQWQGQHNUWYA3XQJVQC }// blackboard is how the behavior tree sees/shares information#[derive(Debug, Clone, PartialEq, Copy)]pub enum BlackboardValue {Integer(i64),Float(f64),// TODO we aren't going hogwild on these, we only need 32-bit resolution afaikPoint(Point2<f32>),Vector(Vector2<f32>),Boolean(bool),// We want Copy, and strings are probably unneccessary// String(Arc<str>),
// TODO If this ever librarifies, make this use mintpub trait BlackboardValueVector {fn vector(self) -> Vector2<f32>;}pub trait BlackboardValuePoint {fn point(self) -> Point2<f32>;}impl<T: Into<Vector2<f32>>> BlackboardValueVector for T {fn vector(self) -> Vector2<f32> {self.into()}}impl<T: Into<Point2<f32>>> BlackboardValuePoint for T {fn point(self) -> Point2<f32> {self.into()}}impl BlackboardValue {fn into_point<T: BlackboardValuePoint>(point: T) -> Self {Self::Point(point.point())}fn into_vector<T: BlackboardValueVector>(vector: T) -> Self {Self::Vector(vector.vector())}}impl From<bool> for BlackboardValue {fn from(value: bool) -> Self {Self::Boolean(value)}}macro_rules! bv_from {(integer $type:ty) => {impl From<$type> for BlackboardValue {fn from(value: $type) -> Self {Self::Integer(i64::from(value))}}};(float $type:ty) => {impl From<$type> for BlackboardValue {fn from(value: $type) -> Self {Self::Float(f64::from(value))}}};}bv_from!(integer u8);bv_from!(integer u16);bv_from!(integer u32);bv_from!(integer i8);bv_from!(integer i16);bv_from!(integer i32);bv_from!(float f32);bv_from!(float f64);#[derive(Debug, Default)]pub struct Blackboard(HashMap<Box<str>, BlackboardValue>);impl Blackboard {pub fn set<S: AsRef<str>>(&mut self, key: S, value: BlackboardValue) {self.0.insert(Box::from(key.as_ref()), value);}pub fn get<S: AsRef<str>>(&self, key: S) -> Option<&BlackboardValue> {self.0.get(key.as_ref())}pub fn get_mut<S: AsRef<str>>(&mut self, key: S) -> Option<&mut BlackboardValue> {self.0.get_mut(key.as_ref())}}
pub fn blackboard(&self) -> &Blackboard {&self.blackboard}pub fn blackboard_mut(&mut self) -> &mut Blackboard {&mut self.blackboard}fn tick_node(&mut self, node: &dyn BehaviorNode) -> Option<bool> {match node.tick(&mut self.blackboard) {
fn tick_node(&mut self, node: &dyn BehaviorNode<B>, context: &mut B) -> Option<bool> {match node.tick(context) {
impl BehaviorNode for Succeeder {fn tick(&self, blackboard: &mut Blackboard) -> crate::simple_bt::NodeResult {
impl<B: 'static> BehaviorNode<B> for Succeeder<B> {fn tick(&self, blackboard: &mut B) -> crate::simple_bt::NodeResult<B> {
impl BehaviorNode for MoveTo {fn tick(&self, blackboard: &mut Blackboard) -> NodeResult {let Some(BlackboardValue::Point(position)) = blackboard.get_mut("position") else {return NodeResult::Failure;};
let mut pos: Vec2 = (*position).into();let movement = (self.goal - pos) * self.part.recip();pos += movement;// Store position back*position = pos.into();
impl BehaviorNode<Vec2> for MoveTo {fn tick(&self, position: &mut Vec2) -> NodeResult<Vec2> {let movement = (self.goal - *position) * self.part.recip();*position += movement;
// With no info, the node should fail{let mut runner = BehaviorRunner::new(tree.clone());check!(!runner.is_running());check!(runner.proceed() == Some(false));}
runner.blackboard_mut().set("position", BlackboardValue::into_point(starting_position));while let Some(BlackboardValue::Point(pos)) = runner.blackboard().get("position") {eprintln!("position = {pos:?}\nrunner = {runner:?}");if let Some(res) = runner.proceed() {// we should succeedcheck!(res);break;}
let mut res = None;while res.is_none() {res = runner.proceed(&mut position);
#[derive(Debug)]pub struct Repeated {resume: Option<Arc<dyn BehaviorNode>>,child: Arc<dyn BehaviorNode>,
pub struct Repeated<B> {resume: Option<BehaviorArc<B>>,child: BehaviorArc<B>,}impl<B> Debug for Repeated<B> {fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {f.debug_struct("Repeated").field("child", &self.child).finish()}
#[derive(Debug)]pub struct RepeatedUntilFailure {child: Arc<dyn BehaviorNode>,
pub struct RepeatedUntilFailure<B> {child: BehaviorArc<B>,}impl<B> Debug for RepeatedUntilFailure<B> {fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {f.debug_struct("RepeatedUntilFailure").field("child", &self.child).finish()}
impl Inverter {pub fn new(child: Arc<dyn BehaviorNode>) -> Self {
impl<B> std::fmt::Debug for Inverter<B> {fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {f.debug_struct("Inverter").field("child", &self.child).finish()}}impl<B> Inverter<B> {pub fn new(child: BehaviorArc<B>) -> Self {
}#[derive(Debug, Clone)]struct MoveTo {speed: f32,goal: Vec2,}impl BehaviorNode<(Vec2, Vec2)> for MoveTo {fn tick(&self, (position, velocity): &mut (Vec2, Vec2)) -> NodeResult<(Vec2, Vec2)> {let dist = (self.goal - *position).length();const ERROR: f32 = 10.0;if dist <= ERROR {NodeResult::Success} else {let desired_vel = (self.goal - *position).normalize_or_zero() * self.speed;debug!("{desired_vel:?} {velocity:?}");let dvn = desired_vel.normalize_or_zero();let vn = velocity.normalize_or_zero();let dvl = desired_vel.length();let vl = velocity.length();const KEEP: f32 = 0.9;if dvn.dot(vn) <= 0.0 || vl < dvl {*velocity *= KEEP;*velocity += (desired_vel - *velocity) * (1.0 - KEEP);}NodeResult::Running(self.clone().arc())}}