converted inventory systems into a module

src/inventory/collection_system.rs

@@ -0,0 +1,60 @@
+use super::{
+    gamelog, EquipmentChanged, InBackpack, MagicItem, MasterDungeonMap, Name, ObfuscatedName, Position, Wand,
+    WantsToPickupItem,
+};
+use crate::gui::obfuscate_name;
+use specs::prelude::*;
+
+pub struct ItemCollectionSystem {}
+
+impl<'a> System<'a> for ItemCollectionSystem {
+    #[allow(clippy::type_complexity)]
+    type SystemData = (
+        ReadExpect<'a, Entity>,
+        WriteStorage<'a, WantsToPickupItem>,
+        WriteStorage<'a, Position>,
+        ReadStorage<'a, Name>,
+        WriteStorage<'a, InBackpack>,
+        WriteStorage<'a, EquipmentChanged>,
+        ReadStorage<'a, MagicItem>,
+        ReadStorage<'a, ObfuscatedName>,
+        ReadExpect<'a, MasterDungeonMap>,
+        ReadStorage<'a, Wand>,
+    );
+
+    fn run(&mut self, data: Self::SystemData) {
+        let (
+            player_entity,
+            mut wants_pickup,
+            mut positions,
+            names,
+            mut backpack,
+            mut equipment_changed,
+            magic_items,
+            obfuscated_names,
+            dm,
+            wands,
+        ) = data;
+
+        for pickup in wants_pickup.join() {
+            positions.remove(pickup.item);
+            backpack.insert(pickup.item, InBackpack { owner: pickup.collected_by }).expect("Unable to pickup item.");
+            equipment_changed
+                .insert(pickup.collected_by, EquipmentChanged {})
+                .expect("Unable to insert EquipmentChanged.");
+
+            if pickup.collected_by == *player_entity {
+                gamelog::Logger::new()
+                    .append("You pick up the")
+                    .item_name_n(format!(
+                        "{}",
+                        obfuscate_name(pickup.item, &names, &magic_items, &obfuscated_names, &dm, Some(&wands)).0
+                    ))
+                    .period()
+                    .log();
+            }
+        }
+
+        wants_pickup.clear();
+    }
+}