Improve gliding

- make glider dimensions a factor of body height
- increase glider dimensions across the board
- remove delay from transition into glide
- enable glider control while wielding glider
- improve glide wield animation

CHANGELOG.md

@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - NPCs can now warn players before engaging in combat
 - Custom error message when a supported graphics backend can not be found
 - Add server setting with PvE/PvP switch
+- Can now tilt glider while only wielding it
 
 ### Changed
 
@@ -47,6 +48,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - The types of animals that can be tamed as pets are now limited to certain species, pending further balancing of pets
 - Made server-cli admin add/remove command use positional arguments again
 - Usage of "stamina" replaced with "energy"
+- Glider dimensions now depend on character height
+- Glider dimensions somewhat increased overall
 
 ### Removed
 

common/src/comp/ori.rs

@@ -194,6 +194,30 @@ impl Ori {
         self.rotated(Quaternion::rotation_y(angle_radians))
     }
 
+    /// Returns a version which is rolled such that its up points towards `dir`
+    /// as much as possible without pitching or yawing
+    pub fn rolled_towards(self, dir: Dir) -> Self {
+        dir.projected(&Plane::from(self.look_dir()))
+            .map_or(self, |dir| self.prerotated(self.up().rotation_between(dir)))
+    }
+
+    /// Returns a version which has been pitched towards `dir` as much as
+    /// possible without yawing or rolling
+    pub fn pitched_towards(self, dir: Dir) -> Self {
+        dir.projected(&Plane::from(self.right()))
+            .map_or(self, |dir_| {
+                self.prerotated(self.look_dir().rotation_between(dir_))
+            })
+    }
+
+    /// Returns a version which has been yawed towards `dir` as much as possible
+    /// without pitching or rolling
+    pub fn yawed_towards(self, dir: Dir) -> Self {
+        dir.projected(&Plane::from(self.up())).map_or(self, |dir_| {
+            self.prerotated(self.look_dir().rotation_between(dir_))
+        })
+    }
+
     /// Returns a version without sideways tilt (roll)
     ///
     /// ```

common/src/states/glide.rs

@@ -80,7 +80,7 @@ impl CharacterBehavior for Data {
         if data.physics.on_ground.is_some()
             && (data.vel.0 - data.physics.ground_vel).magnitude_squared() < 2_f32.powi(2)
         {
-            update.character = CharacterState::GlideWield(glide_wield::Data::default());
+            update.character = CharacterState::GlideWield(glide_wield::Data::from(data));
         } else if data.physics.in_liquid().is_some()
             || data
                 .inventory

common/src/states/glide_wield.rs

@@ -1,6 +1,6 @@
 use super::utils::*;
 use crate::{
-    comp::{slot::EquipSlot, CharacterState, InventoryAction, StateUpdate},
+    comp::{slot::EquipSlot, CharacterState, InventoryAction, Ori, StateUpdate},
     states::{
         behavior::{CharacterBehavior, JoinData},
         glide,
@@ -10,13 +10,25 @@ use serde::{Deserialize, Serialize};
 
 #[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
 pub struct Data {
-    // time since left ground, for preventing state transition
+    pub ori: Ori,
-    // before block snapping kicks in
+    span_length: f32,
-    timer: f32,
+    chord_length: f32,
 }
 
-impl Default for Data {
+impl From<&JoinData<'_>> for Data {
-    fn default() -> Self { Self { timer: 0.0 } }
+    fn from(data: &JoinData) -> Self {
+        let scale = data.body.dimensions().z;
+        Self {
+            // Aspect ratio is what really matters for lift/drag ratio
+            // and the aerodynamics model works for ARs up to 25.
+            // The inflated dimensions are hopefully only a temporary
+            // bandaid for the poor glide ratio experienced under 2.5G.
+            // A span/chord ratio of 4.5 gives an AR of ~5.73.
+            span_length: scale * 3.0,
+            chord_length: scale / 1.5,
+            ori: *data.ori,
+        }
+    }
 }
 
 impl CharacterBehavior for Data {
@@ -29,31 +41,37 @@ impl CharacterBehavior for Data {
         handle_dodge_input(data, &mut update);
         handle_wield(data, &mut update);
 
-        // If not on the ground while wielding glider enter gliding state
+        // If still in this state, do the things
-        if data.physics.on_ground.is_none() {
+        if matches!(update.character, CharacterState::GlideWield(_)) {
-            update.character = if self.timer > 0.3 {
+            // If not on the ground while wielding glider enter gliding state
-                CharacterState::Glide(glide::Data::new(10.0, 0.6, *data.ori))
+            update.character = if data.physics.on_ground.is_none() {
-            } else {
+                CharacterState::Glide(glide::Data::new(
+                    self.span_length,
+                    self.chord_length,
+                    self.ori,
+                ))
+            // make sure we have a glider and we're not (too deep) in water
+            } else if data
+                .inventory
+                .and_then(|inv| inv.equipped(EquipSlot::Glider))
+                .is_some()
+                && data.physics.in_liquid().map_or(true, |depth| depth < 0.5)
+            {
                 CharacterState::GlideWield(Self {
-                    timer: self.timer + data.dt.0,
+                    // Glider tilt follows look dir
+                    ori: self.ori.slerped_towards(
+                        data.ori.slerped_towards(
+                            Ori::from(data.inputs.look_dir).pitched_up(0.6),
+                            (1.0 + data.inputs.look_dir.dot(*data.ori.look_dir()).max(0.0)) / 3.0,
+                        ),
+                        5.0 * data.dt.0,
+                    ),
+                    ..*self
                 })
+            } else {
+                CharacterState::Idle
             };
         }
-        if data
-            .physics
-            .in_liquid()
-            .map(|depth| depth > 0.5)
-            .unwrap_or(false)
-        {
-            update.character = CharacterState::Idle;
-        }
-        if data
-            .inventory
-            .and_then(|inv| inv.equipped(EquipSlot::Glider))
-            .is_none()
-        {
-            update.character = CharacterState::Idle
-        };
 
         update
     }

common/src/states/utils.rs

@@ -638,7 +638,7 @@ pub fn attempt_glide_wield(data: &JoinData<'_>, update: &mut StateUpdate) {
             .unwrap_or(false)
         && data.body.is_humanoid()
     {
-        update.character = CharacterState::GlideWield(glide_wield::Data::default());
+        update.character = CharacterState::GlideWield(glide_wield::Data::from(data));
     }
 }
 

voxygen/anim/src/character/glidewield.rs

@@ -5,8 +5,9 @@ use super::{
 
 pub struct GlideWieldAnimation;
 
+type GlideWieldAnimationDependency = (Quaternion<f32>, Quaternion<f32>);
 impl Animation for GlideWieldAnimation {
-    type Dependency<'a> = ();
+    type Dependency<'a> = GlideWieldAnimationDependency;
     type Skeleton = CharacterSkeleton;
 
     #[cfg(feature = "use-dyn-lib")]
@@ -16,21 +17,25 @@ impl Animation for GlideWieldAnimation {
 
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
-        _: Self::Dependency<'a>,
+        (orientation, glider_orientation): Self::Dependency<'a>,
         _anim_time: f32,
         rate: &mut f32,
         s_a: &SkeletonAttr,
     ) -> Self::Skeleton {
         let mut next = (*skeleton).clone();
+        let glider_ori = orientation.inverse() * glider_orientation;
+        let glider_pos = Vec3::new(0.0, -5.0, 13.0);
         *rate = 1.0;
 
-        next.hand_l.position = Vec3::new(-2.0 - s_a.hand.0, s_a.hand.1, s_a.hand.2 + 15.0);
+        next.hand_l.position =
+            glider_pos + glider_ori * Vec3::new(-s_a.hand.0 + -2.0, s_a.hand.1 + 8.0, s_a.hand.2);
         next.hand_l.orientation = Quaternion::rotation_x(3.35) * Quaternion::rotation_y(0.2);
 
-        next.hand_r.position = Vec3::new(2.0 + s_a.hand.0, s_a.hand.1, s_a.hand.2 + 15.0);
+        next.hand_r.position =
+            glider_pos + glider_ori * Vec3::new(s_a.hand.0 + 2.0, s_a.hand.1 + 8.0, s_a.hand.2);
         next.hand_r.orientation = Quaternion::rotation_x(3.35) * Quaternion::rotation_y(-0.2);
         next.glider.scale = Vec3::one() * 1.0;
-        next.glider.orientation = Quaternion::rotation_x(0.35);
+        next.glider.orientation = glider_ori;
 
         next.glider.position = Vec3::new(0.0, -5.0, 13.0);
 

voxygen/src/scene/figure/mod.rs

@@ -1572,10 +1572,10 @@ impl FigureMgr {
                                 skeleton_attr,
                             )
                         },
-                        CharacterState::GlideWield { .. } => {
+                        CharacterState::GlideWield(data) => {
                             anim::character::GlideWieldAnimation::update_skeleton(
                                 &target_base,
-                                (),
+                                (ori, data.ori.into()),
                                 state.state_time,
                                 &mut state_animation_rate,
                                 skeleton_attr,