Voxygen/HUD: Display item name over dropped items

Fix clippy warning: Removed unneeded () in fn style

Fix formatting for fn style

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Display item name over loot/dropped items
 - Added Lottery system for loot
 - Added context-sensitive crosshair
 - Announce alias changes to all clients

voxygen/src/hud/mod.rs

@@ -9,6 +9,7 @@ mod item_imgs;
 mod map;
 mod minimap;
 mod overhead;
+mod overitem;
 mod popup;
 mod settings_window;
 mod skillbar;
@@ -141,6 +142,7 @@ widget_ids! {
         scts[],
 
         overheads[],
+        overitems[],
 
         // Intro Text
         intro_bg,
@@ -664,6 +666,7 @@ impl Hud {
             let players = ecs.read_storage::<comp::Player>();
             let scales = ecs.read_storage::<comp::Scale>();
             let bodies = ecs.read_storage::<comp::Body>();
+            let items = ecs.read_storage::<comp::Item>();
             let entities = ecs.entities();
             let me = client.entity();
             let own_level = stats
@@ -1000,9 +1003,29 @@ impl Hud {
             }
 
             let mut overhead_walker = self.ids.overheads.walk();
+            let mut overitem_walker = self.ids.overitems.walk();
             let mut sct_walker = self.ids.scts.walk();
             let mut sct_bg_walker = self.ids.sct_bgs.walk();
 
+            // Render overitem name
+            for (pos, item, distance) in (&entities, &pos, &items)
+                .join()
+                .map(|(_, pos, item)| (pos, item, pos.0.distance_squared(player_pos)))
+                .filter(|(_, _, distance)| distance < &common::comp::MAX_PICKUP_RANGE_SQR)
+            {
+                let overitem_id = overitem_walker.next(
+                    &mut self.ids.overitems,
+                    &mut ui_widgets.widget_id_generator(),
+                );
+                let ingame_pos = pos.0 + Vec3::unit_z() * 1.2;
+
+                // Item name
+                overitem::Overitem::new(&item.name(), &distance, &self.fonts)
+                    .x_y(0.0, 100.0)
+                    .position_ingame(ingame_pos)
+                    .set(overitem_id, ui_widgets);
+            }
+
             // Render overhead name tags and health bars
             for (pos, name, stats, energy, height_offset, hpfl, uid) in (
                 &entities,

voxygen/src/hud/overitem.rs

@@ -0,0 +1,83 @@
+use crate::ui::{fonts::ConrodVoxygenFonts, Ingameable};
+use conrod_core::{
+    widget::{self, Text},
+    widget_ids, Color, Colorable, Positionable, Widget, WidgetCommon,
+};
+
+widget_ids! {
+    struct Ids {
+        // Name
+        name_bg,
+        name,
+    }
+}
+
+/// ui widget containing everything that goes over a item
+/// (Item, DistanceFromPlayer, Rarity, etc.)
+#[derive(WidgetCommon)]
+pub struct Overitem<'a> {
+    name: &'a str,
+    distance: &'a f32,
+    fonts: &'a ConrodVoxygenFonts,
+    #[conrod(common_builder)]
+    common: widget::CommonBuilder,
+}
+
+impl<'a> Overitem<'a> {
+    pub fn new(name: &'a str, distance: &'a f32, fonts: &'a ConrodVoxygenFonts) -> Self {
+        Self {
+            name,
+            distance,
+            fonts,
+            common: widget::CommonBuilder::default(),
+        }
+    }
+}
+
+pub struct State {
+    ids: Ids,
+}
+
+impl<'a> Ingameable for Overitem<'a> {
+    fn prim_count(&self) -> usize {
+        // Number of conrod primitives contained in the overitem isplay. TODO maybe
+        // this could be done automatically?
+        // - 2 Text::new for name
+        2
+    }
+}
+
+impl<'a> Widget for Overitem<'a> {
+    type Event = ();
+    type State = State;
+    type Style = ();
+
+    fn init_state(&self, id_gen: widget::id::Generator) -> Self::State {
+        State {
+            ids: Ids::new(id_gen),
+        }
+    }
+
+    fn style(&self) -> Self::Style {}
+
+    fn update(self, args: widget::UpdateArgs<Self>) -> Self::Event {
+        let widget::UpdateArgs { state, ui, .. } = args;
+
+        let font_size =
+            ((1.0 - (self.distance / common::comp::MAX_PICKUP_RANGE_SQR)) * 30.0) as u32;
+
+        // ItemName
+        Text::new(&self.name)
+            .font_id(self.fonts.cyri.conrod_id)
+            .font_size(font_size)
+            .color(Color::Rgba(0.0, 0.0, 0.0, 1.0))
+            .x_y(-1.0, 48.0)
+            .set(state.ids.name_bg, ui);
+        Text::new(&self.name)
+            .font_id(self.fonts.cyri.conrod_id)
+            .font_size(font_size)
+            .color(Color::Rgba(0.61, 0.61, 0.89, 1.0))
+            .x_y(0.0, 50.0)
+            .set(state.ids.name, ui);
+    }
+}