Merge branch 'aweinstock/bow-zoom-charge-master' into 'master'

Make the camera zoom as the bow (or any ChargedRanged attack) is charging.

See merge request veloren/veloren!2339

CHANGELOG.md

@@ -62,6 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Chat tabs
 - NPC's now hear certain sounds
 - Renamed Animal Trainers to Beastmasters and gave them their own set of armor to wear
+- ChargedRanged attacks (such as some bow attacks) use an FOV zoom effect to indicate charge.
 - Add chest to each dungeon with unique loot 
 
 ### Changed

common/src/states/charged_ranged.rs

@@ -61,6 +61,17 @@ pub struct Data {
     pub exhausted: bool,
 }
 
+impl Data {
+    /// How complete the charge is, on a scale of 0.0 to 1.0
+    pub fn charge_frac(&self) -> f32 {
+        if let StageSection::Charge = self.stage_section {
+            (self.timer.as_secs_f32() / self.static_data.charge_duration.as_secs_f32()).min(1.0)
+        } else {
+            0.0
+        }
+    }
+}
+
 impl CharacterBehavior for Data {
     fn behavior(&self, data: &JoinData) -> StateUpdate {
         let mut update = StateUpdate::from(data);
@@ -91,9 +102,7 @@ impl CharacterBehavior for Data {
             },
             StageSection::Charge => {
                 if !input_is_pressed(data, self.static_data.ability_info.input) && !self.exhausted {
-                    let charge_frac = (self.timer.as_secs_f32()
-                        / self.static_data.charge_duration.as_secs_f32())
-                    .min(1.0);
+                    let charge_frac = self.charge_frac();
                     let arrow = ProjectileConstructor::Arrow {
                         damage: self.static_data.initial_damage as f32
                             + charge_frac * self.static_data.scaled_damage as f32,

voxygen/src/scene/camera.rs

@@ -42,6 +42,7 @@ pub struct Camera {
     ori: Vec3<f32>,
     tgt_dist: f32,
     dist: f32,
+    tgt_fov: f32,
     fov: f32,
     aspect: f32,
     mode: CameraMode,
@@ -76,6 +77,7 @@ impl Camera {
             ori: Vec3::zero(),
             tgt_dist: 10.0,
             dist: 10.0,
+            tgt_fov: 1.1,
             fov: 1.1,
             aspect,
             mode,
@@ -222,6 +224,14 @@ impl Camera {
             );
         }
 
+        if (self.fov - self.tgt_fov).abs() > 0.01 {
+            self.fov = f32::lerp(
+                self.fov,
+                self.tgt_fov,
+                0.65 * (delta as f32) / self.interp_time(),
+            );
+        }
+
         if (self.focus - self.tgt_focus).magnitude_squared() > 0.001 {
             let lerped_focus = Lerp::lerp(
                 self.focus,
@@ -290,7 +300,7 @@ impl Camera {
     pub fn get_fov(&self) -> f32 { self.fov }
 
     /// Set the field of view of the camera in radians.
-    pub fn set_fov(&mut self, fov: f32) { self.fov = fov; }
+    pub fn set_fov(&mut self, fov: f32) { self.tgt_fov = fov; }
 
     /// Set the FOV in degrees
     pub fn set_fov_deg(&mut self, fov: u16) {

voxygen/src/session/mod.rs

@@ -72,6 +72,7 @@ pub struct SessionState {
     target_entity: Option<specs::Entity>,
     selected_entity: Option<(specs::Entity, std::time::Instant)>,
     interactable: Option<Interactable>,
+    saved_zoom_dist: Option<f32>,
 }
 
 /// Represents an active game session (i.e., the one being played).
@@ -118,6 +119,7 @@ impl SessionState {
             target_entity: None,
             selected_entity: None,
             interactable: None,
+            saved_zoom_dist: None,
         }
     }
 
@@ -295,6 +297,31 @@ impl PlayState for SessionState {
                 camera.set_orientation(cam_dir);
             }
 
+            let client = self.client.borrow();
+            let player_entity = client.entity();
+
+            let mut fov_scaling = 1.0;
+            if let Some(comp::CharacterState::ChargedRanged(cr)) = client
+                .state()
+                .read_storage::<comp::CharacterState>()
+                .get(player_entity)
+            {
+                if cr.charge_frac() > 0.25 {
+                    fov_scaling -= 3.0 * cr.charge_frac() / 4.0;
+                }
+                let max_dist = if let Some(dist) = self.saved_zoom_dist {
+                    dist
+                } else {
+                    let dist = camera.get_distance();
+                    self.saved_zoom_dist = Some(dist);
+                    dist
+                };
+                camera.set_distance(Lerp::lerp(max_dist, 2.0, 1.0 - fov_scaling));
+            } else if let Some(dist) = self.saved_zoom_dist.take() {
+                camera.set_distance(dist);
+            }
+            camera.set_fov((global_state.settings.graphics.fov as f32 * fov_scaling).to_radians());
+
             // Compute camera data
             camera.compute_dependents(&*self.client.borrow().state().terrain());
             let camera::Dependents {
@@ -305,18 +332,17 @@ impl PlayState for SessionState {
             let cam_pos = cam_pos + focus_off;
 
             let (is_aiming, aim_dir_offset) = {
-                let client = self.client.borrow();
                 let is_aiming = client
                     .state()
                     .read_storage::<comp::CharacterState>()
-                    .get(client.entity())
+                    .get(player_entity)
                     .map(|cs| cs.is_aimed())
                     .unwrap_or(false);
 
                 (
                     is_aiming,
                     if is_aiming && self.scene.camera().get_mode() == CameraMode::ThirdPerson {
-                        Vec3::unit_z() * 0.05
+                        Vec3::unit_z() * 0.025
                     } else {
                         Vec3::zero()
                     },
@@ -324,25 +350,21 @@ impl PlayState for SessionState {
             };
             self.is_aiming = is_aiming;
 
-            let player_entity = self.client.borrow().entity();
-
-            let can_build = self
-                .client
-                .borrow()
+            let can_build = client
                 .state()
                 .read_storage::<comp::CanBuild>()
                 .get(player_entity)
                 .map_or_else(|| false, |cb| cb.enabled);
 
-            let is_mining = self
-                .client
-                .borrow()
+            let is_mining = client
                 .inventories()
                 .get(player_entity)
                 .and_then(|inv| inv.equipped(EquipSlot::ActiveMainhand))
                 .and_then(|item| item.tool())
                 .map_or(false, |tool| tool.kind == ToolKind::Pick)
-                && self.client.borrow().is_wielding() == Some(true);
+                && client.is_wielding() == Some(true);
+
+            drop(client);
 
             // Check to see whether we're aiming at anything
             let (build_pos, select_pos, target_entity) =