Equipment & inhands. (#110)

* Equipment WiP

* Equipment's starting to work.

* Equipment works properly 100% now.

* Inhands work.

Also more clothes.

Content.Client/GameObjects/Components/Items/ItemComponent.cs

@@ -0,0 +1,60 @@
+using Content.Shared.GameObjects.Components.Inventory;
+using SS14.Client.Graphics;
+using SS14.Client.Interfaces.ResourceManagement;
+using SS14.Client.ResourceManagement;
+using SS14.Shared.GameObjects;
+using SS14.Shared.GameObjects.Components.Renderable;
+using SS14.Shared.IoC;
+using SS14.Shared.Serialization;
+using SS14.Shared.Utility;
+using SS14.Shared.ViewVariables;
+
+namespace Content.Client.GameObjects
+{
+    public class ItemComponent : Component
+    {
+        public override string Name => "Item";
+
+        [ViewVariables] protected ResourcePath RsiPath;
+
+        private string _equippedPrefix;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public string EquippedPrefix
+        {
+            get => _equippedPrefix;
+            set => _equippedPrefix = value;
+        }
+
+        public (RSI rsi, RSI.StateId stateId)? GetInHandStateInfo(string hand)
+        {
+            if (RsiPath == null)
+            {
+                return null;
+            }
+
+            var rsi = GetRSI();
+            var stateId = EquippedPrefix != null ? $"{EquippedPrefix}-inhand-{hand}" : $"inhand-{hand}";
+            if (rsi.TryGetState(stateId, out _))
+            {
+                return (rsi, stateId);
+            }
+
+            return null;
+        }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataFieldCached(ref RsiPath, "sprite", null);
+            serializer.DataFieldCached(ref _equippedPrefix, "prefix", null);
+        }
+
+        protected RSI GetRSI()
+        {
+            var resourceCache = IoCManager.Resolve<IResourceCache>();
+            return resourceCache.GetResource<RSIResource>(SharedSpriteComponent.TextureRoot / RsiPath).RSI;
+        }
+    }
+}