feat: implement rotateWithFather property

prpr/src/bin.rs

@@ -389,7 +389,9 @@ impl BinaryData for JudgeLine {
             0 => None,
             x => Some(x as usize - 1),
         };
-        let show_below = r.read()?;
+        let flags = r.read::<u8>()?;
+        let show_below = flags & 1 != 0;
+        let rot_with_parent = flags & 2 != 0;
         let cache = JudgeLineCache::new(&mut notes);
         let attach_ui = UIElement::from_u8(r.read()?);
         let ctrl_obj = RefCell::new(r.read()?);
@@ -402,6 +404,7 @@ impl BinaryData for JudgeLine {
             notes,
             color,
             parent,
+            rot_with_parent,
             show_below,
 
             attach_ui,
@@ -440,7 +443,7 @@ impl BinaryData for JudgeLine {
             None => 0,
             Some(index) => index as u64 + 1,
         })?;
-        w.write_val(self.show_below)?;
+        w.write_val(self.show_below as u8 + self.rot_with_parent as u8 * 2)?;
         w.write_val(self.attach_ui.map_or(0, |it| it as u8))?;
         w.write(self.ctrl_obj.borrow().deref())?;
         w.write(&self.incline)?;

prpr/src/core/chart.rs

@@ -129,8 +129,9 @@ impl Chart {
         }
         // TODO optimize
         let trs = self.lines.iter().map(|it| it.now_transform(res, &self.lines)).collect::<Vec<_>>();
-        for (line, tr) in self.lines.iter_mut().zip(trs) {
-            line.update(res, tr);
+        let rotations = self.lines.iter().map(|it| it.fetch_rot(&self.lines)).collect::<Vec<_>>();
+        for ((line, tr), rot) in self.lines.iter_mut().zip(trs).zip(rotations) {
+            line.update(res, tr, rot);
         }
         for effect in &mut self.extra.effects {
             effect.update(res);

prpr/src/core/line.rs

@@ -146,6 +146,7 @@ pub struct JudgeLine {
     pub notes: Vec<Note>,
     pub color: Anim<Color>,
     pub parent: Option<usize>,
+    pub rot_with_parent: bool,
     pub z_index: i32,
     /// Whether to show notes below the line, here below is defined in the time axis, which means the note should already be judged
     ///
@@ -157,15 +158,14 @@ pub struct JudgeLine {
 }
 
 impl JudgeLine {
-    pub fn update(&mut self, res: &mut Resource, tr: Matrix) {
+    pub fn update(&mut self, res: &mut Resource, tr: Matrix, parent_rot: f32) {
         // self.object.set_time(res.time); // this is done by chart, chart has to calculate transform for us
-        let rot = self.object.rotation.now();
         self.height.set_time(res.time);
         let line_height = self.height.now();
         let mut ctrl_obj = self.ctrl_obj.borrow_mut();
         self.cache.update_order.retain(|id| {
             let note = &mut self.notes[*id as usize];
-            note.update(res, rot, &tr, &mut ctrl_obj, line_height);
+            note.update(res, parent_rot, &tr, &mut ctrl_obj, line_height);
             !note.dead()
         });
         drop(ctrl_obj);
@@ -208,18 +208,29 @@ impl JudgeLine {
         });
     }
 
+    pub fn fetch_rot(&self, lines: &[JudgeLine]) -> f32 {
+        let mut rot = self.object.rotation.now();
+        if self.rot_with_parent {
+            if let Some(parent) = self.parent {
+                rot += lines[parent].fetch_rot(lines);
+            }
+        }
+        rot
+    }
+
     pub fn fetch_pos(&self, res: &Resource, lines: &[JudgeLine]) -> Vector {
         if let Some(parent) = self.parent {
             let parent = &lines[parent];
-            let mut parent_translation = parent.fetch_pos(res, lines);
-            parent_translation += Rotation2::new(parent.object.rotation.now().to_radians()) * self.object.now_translation(res);
-            return parent_translation;
+            let parent_translation = parent.fetch_pos(res, lines);
+            return parent_translation + Rotation2::new(parent.fetch_rot(lines).to_radians()) * self.object.now_translation(res);
         }
         self.object.now_translation(res)
     }
 
     pub fn now_transform(&self, res: &Resource, lines: &[JudgeLine]) -> Matrix {
-        self.object.now_rotation().append_translation(&self.fetch_pos(res, lines))
+        Rotation2::new(self.fetch_rot(lines).to_radians())
+            .to_homogeneous()
+            .append_translation(&self.fetch_pos(res, lines))
     }
 
     pub fn render(&self, ui: &mut Ui, res: &mut Resource, lines: &[JudgeLine], bpm_list: &mut BpmList, settings: &ChartSettings, id: usize) {

prpr/src/parse/pec.rs

@@ -172,6 +172,7 @@ fn parse_judge_line(mut pec: PECJudgeLine, id: usize, max_time: f32) -> Result<J
         notes: pec.notes,
         color: Anim::default(),
         parent: None,
+        rot_with_parent: false,
         z_index: 0,
         show_below: false,
         attach_ui: None,

prpr/src/parse/pgr.rs

@@ -251,6 +251,7 @@ fn parse_judge_line(pgr: PgrJudgeLine, max_time: f32, format_version: u32) -> Re
         notes,
         color: Anim::default(),
         parent: None,
+        rot_with_parent: false,
         z_index: 0,
         show_below: false,
         attach_ui: None,

prpr/src/parse/rpe.rs

@@ -135,6 +135,7 @@ struct RPEJudgeLine {
     texture: String,
     #[serde(rename = "father")]
     parent: Option<isize>,
+    rotate_with_father: Option<bool>,
     event_layers: Vec<Option<RPEEventLayer>>,
     extended: Option<RPEExtendedEvents>,
     notes: Option<Vec<RPENote>>,
@@ -582,6 +583,7 @@ async fn parse_judge_line(
                 Some(parent as usize)
             }
         },
+        rot_with_parent: rpe.rotate_with_father.unwrap_or(false),
         z_index: rpe.z_order,
         show_below: rpe.is_cover != 1,
         attach_ui: rpe.attach_ui,