src/states/linear/components_track.rs

@@ -1,53 +1,17 @@
 use bevy::prelude::*;
 
-#[derive(Resource)]
+#[derive(Component)]
-pub struct Track {
+pub struct Track{
     pub start_point: Vec2,
     pub start_direction: Vec2, // будет нормализовано при построении
     pub segments: Vec<PathSegment>,
 }
 
-#[derive(Debug)]
-pub enum SegementType{
-    Line,
-    Turn,
-}
-
 // линия всегда строится от точки старта по направлению
 // направление изменяется сегментами поворота
 // left при истине - поворот против часовой стрелки, ложь - по часовой
 #[derive(Clone, Copy)]
-pub enum PathSegment {
+pub enum PathSegment{
     Line { length: f32 },
-    Turn { radius: f32, left: bool },
+    Turn { radius: f32, left: bool }, 
-    // TODO заменить перечисление на структуру с полем типа SegementType, чтоб был единый источник типа
-}
-
-
-
-#[derive(Resource)]
-pub struct PrecalculatedTrack{
-    pub segments: Vec<PTSegment>
-}
-
-#[derive(Debug)]
-pub struct PTSegment {
-    pub t_start: f32,
-    pub t_end: f32,
-    pub segment_type: SegementType,
-    pub start_pos: Vec2,
-    pub direction: Vec2,
-    pub center: Vec2,
-    pub radius: f32,
-    pub start_angle: f32,
-    pub sweep_sign: f32,
-}
-
-#[derive(Debug, Clone, Copy)]
-pub struct ArcCalculation {
-    pub normal: Vec2,
-    pub center: Vec2,
-    pub start_angle: f32,
-    pub sweep_sign: f32,
-    pub end_pos: Vec2,
 }

src/states/linear/plugin.rs

@@ -1,6 +1,5 @@
 use bevy::prelude::*;
 use crate::states::AppState::LinearState;
-use crate::states::level::GameOver;
 use crate::states::linear::*;
 
 pub struct LinearPlugin;
@@ -8,26 +7,16 @@ pub struct LinearPlugin;
 impl Plugin for LinearPlugin {
     fn build(&self, app: &mut App) {
         app
-            .add_systems(OnEnter (LinearState), setup)
+            .add_systems(OnEnter (LinearState), (setup, setup_linear_track).chain())
             .add_systems(Update, (draw_track_gizmos).run_if(in_state(LinearState)))
             .add_systems(OnExit (LinearState), cleanup);
     }
 }
 
-fn setup(mut commands: Commands) {
+fn setup(mut commands: Commands) {}
-    let build_track = setup_linear_track();
-    let precalculated_track = precalculate_track(&build_track);
-    
-    commands.insert_resource(build_track);
-    commands.insert_resource(precalculated_track);
-}
 
 fn cleanup(mut commands: Commands, query: Query<Entity, With<LinearStateMarker>>) {
-    // зачищаем сущности
     for entity in query.iter() {
         commands.entity(entity).despawn();
     }
-
-    // зачищаем ресурсы по типу
-    commands.remove_resource::<Track>();
 }

src/states/linear/systems.rs

@@ -1,43 +1,60 @@
 use crate::states;
 use bevy::prelude::*;
 use states::linear::*;
-use std::f32::consts::FRAC_PI_2;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 const PINK: Color = Color::srgb_u8(250, 0, 155);
 const BLUE: Color = Color::srgb_u8(0, 0, 255);
 const GREEN: Color = Color::srgb_u8(0, 255, 0);
 
-pub fn draw_track_gizmos(track: Res<Track>, mut gizmos: Gizmos) {
+pub fn draw_track_gizmos(query: Query<&Track>, mut gizmos: Gizmos) {
-    let mut current_pos = track.start_point;
+    println!("Рисуем трек из примитивов");
-    let mut current_dir = track.start_direction.normalize();
+    for track in &query {
+        let mut current_pos = track.start_point;
+        let mut current_dir = track.start_direction.normalize();
 
-    // точка старта
+        // точка старта
-    gizmos.circle_2d(current_pos, 5.0, BLUE);
+        gizmos.circle_2d(current_pos, 5.0, BLUE);
 
-    // рисуем сегменты
+        // рисуем сегменты
-    for segment in &track.segments {
+        for segment in &track.segments {
-        match segment {
+            match segment {
-            PathSegment::Line { length } => {
+                PathSegment::Line { length } => {
-                let end_pos = current_pos + current_dir * length;
+                    let end_pos = current_pos + current_dir * length;
-                gizmos.line_2d(current_pos, end_pos, PINK);
+                    gizmos.line_2d(current_pos, end_pos, PINK);
-                current_pos = end_pos
+                    current_pos = end_pos
-            }
+                }
 
-            PathSegment::Turn { radius, left } => {
+                PathSegment::Turn { radius, left } => {
-                // вычисляем нормаль, центр, угол поворота арки и знак
+                    // вычисляем направление поворота и знак для угла
-                let arc = helper_arc_calculator(current_pos, current_dir, *left, *radius);
+                    let (normal, sign): (Vec2, f32) = if *left {
-
+                        (Vec2::new(-current_dir.y, current_dir.x), -1.0)
-                gizmos.arc_2d(
+                    } else {
-                    Isometry2d::new(arc.center, Rot2::radians(arc.start_angle)),
+                        (Vec2::new(current_dir.y, -current_dir.x), 1.0)
-                    FRAC_PI_2,
+                    };
-                    *radius,
+                    
-                    GREEN,
+                    let center = current_pos + normal * radius;
-                );
+                    let start_vec = current_pos - center;
-                current_pos = arc.end_pos;
+                    let initial_vec = if *left {
-                current_dir = arc.normal;
+                        -start_vec.perp()
+                    } else {
+                        -start_vec
+                    };
+                    
+                    gizmos.arc_2d(
+                        Isometry2d::new(center, Rot2::radians(initial_vec.to_angle())),
+                        FRAC_PI_2,
+                        *radius,
+                        GREEN,
+                    );
+                    // current_pos = center + current_dir * radius;
+                    // current_pos = center + normal.perp() * radius;
+                    current_pos = center + normal.perp() * radius * sign;
+                    current_dir = normal;
+                }
             }
         }
+        // рисуем финиш
+        gizmos.circle_2d(current_pos, 5.0, Color::WHITE);
     }
-    // рисуем финиш
-    gizmos.circle_2d(current_pos, 5.0, Color::WHITE);
 }

src/states/linear/systems_track.rs

@@ -1,8 +1,6 @@
-use std::f32::consts::FRAC_PI_2;
 use crate::states::linear::*;
-use crate::{FACTOR};
+use crate::{FACTOR, HEIGHT, WIDTH};
 use bevy::prelude::*;
-use bevy::reflect::List;
 
 pub const CENTER_X: f32 = 0.0;
 pub const CENTER_Y: f32 = 0.0;
@@ -13,8 +11,10 @@ pub const STEP: f32 = FACTOR as f32 / SCALE;
 pub const SCALE: f32 = 2.0;
 
 
-pub fn setup_linear_track() -> Track {
+pub fn setup_linear_track(mut commands: Commands) {
     println!("Построение трека начато");
+
+    commands.spawn((
         Track {
             start_point: Vec2 {
                 x: CENTER_X - FACTOR as f32 * 7.0,
@@ -22,120 +22,23 @@ pub fn setup_linear_track() -> Track {
             },
             start_direction: Vec2::X,
             segments: vec![
-                PathSegment::Line { length: STEP * 6.0 },
+                PathSegment::Line { length: STEP * 2.0 },
                 PathSegment::Turn { radius: STEP, left: true },
                 PathSegment::Line { length: STEP },
                 PathSegment::Turn { radius: STEP, left: false },
-                PathSegment::Line { length: STEP * 18.0 },
-                PathSegment::Turn { radius: STEP, left: true },
-                PathSegment::Line { length: STEP * 4.0 },
-                PathSegment::Turn { radius: STEP, left: true },
-                PathSegment::Turn { radius: STEP, left: false },
-                PathSegment::Line { length: STEP * 4.0 },
-                PathSegment::Turn { radius: STEP, left: true },
-                PathSegment::Line { length: STEP * 20.0 },
-                PathSegment::Turn { radius: STEP, left: true },
-                PathSegment::Line { length: STEP * 5.0 },
-                PathSegment::Turn { radius: STEP, left: true },
                 PathSegment::Line { length: STEP * 10.0 },
+                PathSegment::Turn { radius: STEP, left: true },
+                PathSegment::Line { length: STEP * 4.0 },
+                PathSegment::Turn { radius: STEP, left: true },
                 PathSegment::Turn { radius: STEP, left: false },
                 PathSegment::Line { length: STEP * 2.0 },
+                PathSegment::Turn { radius: STEP, left: true },
+                PathSegment::Line { length: STEP * 6.0 },
+                PathSegment::Turn { radius: STEP, left: true },
+                PathSegment::Line { length: STEP * 1.0 },
+                PathSegment::Turn { radius: STEP, left: true },
             ],
-        }
+        },
+        LinearStateMarker,
+    ));
 }
-
-pub fn precalculate_track(track: &Track) -> PrecalculatedTrack {
-    let mut pt = PrecalculatedTrack { segments: vec![] };
-    let mut cumulative_length: Vec<f32> = vec![0.0];
-
-    let mut current_pos = track.start_point;
-    let mut current_dir = track.start_direction;
-    
-    // на первом проходе заполняем все, кроме t_start и t_end,
-    // потому что мы не можем посчитать их без общей длины
-    for seg in track.segments.iter(){
-        match seg {
-            PathSegment::Line { length } => {
-                let calc_seg = PTSegment {
-                    t_start: 0.0,
-                    t_end: 0.0,
-                    segment_type: SegementType::Line,
-                    start_pos: current_pos,
-                    direction: current_dir,
-                    center: Vec2::ZERO,
-                    radius: 0.0,
-                    start_angle: 0.0,
-                    sweep_sign: 0.0,
-                };
-
-                pt.segments.push(calc_seg);
-                // сдвигаем позицию для следующего сегмента
-                current_pos = current_pos + length * current_dir;
-                // направление не меняем, пропуск
-                // накапливаем длину
-                cumulative_length.push(cumulative_length[cumulative_length.len() -1] + *length);
-            }
-
-            PathSegment::Turn {radius, left } => {
-                let arc = helper_arc_calculator(current_pos, current_dir, *left, *radius);
-                
-                let calc_seg = PTSegment {
-                    t_start: 0.0,
-                    t_end: 0.0,
-                    segment_type: SegementType::Turn,
-                    start_pos: current_pos,
-                    direction: current_dir,
-                    center: arc.center,
-                    radius: *radius,
-                    start_angle: arc.start_angle,
-                    sweep_sign: arc.sweep_sign,
-                };
-                pt.segments.push(calc_seg);
-                // сдвигаем позицию для следующего сегмента
-                current_pos = arc.end_pos;
-                current_dir = arc.normal;
-                // накапливаем длину
-                cumulative_length.push(cumulative_length[cumulative_length.len() -1] + (FRAC_PI_2 * radius));
-            }
-        }
-    }
-    
-    let last_index = cumulative_length.len() - 1;
-    let total_length = cumulative_length[last_index];
-    
-    // итерируемся уже по прекалькулированному вектору
-    // заполняем точки на треке в пересчете на общую длину
-    println!("Precalculated track:");
-    for (i, seg) in pt.segments.iter_mut().enumerate() {
-        seg.t_start = cumulative_length[i] / total_length;
-        if i < last_index {
-            seg.t_end = cumulative_length[i+1] / total_length;
-        } else {
-            seg.t_end = 1.0;
-        }
-        println!("{:?}", seg);
-    }
-    
-    pt
-}
-
-pub fn helper_arc_calculator(pos: Vec2, dir: Vec2, turn_to: bool, radius: f32) -> ArcCalculation{
-    let (normal, sign): (Vec2, f32) = if turn_to {
-        (Vec2::new(-dir.y, dir.x), -1.0)
-    } else {
-        (Vec2::new(dir.y, -dir.x), 1.0)
-    };
-
-    let center = pos + normal * radius;
-    let start_vec = pos - center;
-    let initial_vec = if turn_to { -start_vec.perp() } else { -start_vec };
-    let angle = initial_vec.to_angle();
-    
-    ArcCalculation{
-        normal,
-        center,
-        start_angle: angle,
-        sweep_sign: sign,
-        end_pos: center + normal.perp() * radius * sign,
-    }
-}