InventoryItem::{stacked, mag}

src/ship/items/inventory.rs

@@ -220,6 +220,20 @@ impl InventoryItem {
             _ => None
         }
     }
+
+    pub fn stacked(&self) -> Option<&StackedInventoryItem> {
+        match self {
+            InventoryItem::Stacked(ref stacked_inventory_item) => Some(stacked_inventory_item),
+            _ => None
+        }
+    }
+
+    pub fn mag(&self) -> Option<&Mag> {
+        match self {
+            InventoryItem::Individual(individual_inventory_item) => individual_inventory_item.mag(),
+            _ => None
+        }
+    }
 }