Shitty combat mode & animations. (#367)

* Combat mode UI & targeting zones.

* Fix inventory hud positioning.

* Crappy attack animations.

* Import TG combat sounds

* More work on arcs.

* Implement hit sounds.

* Lunging, hit effects, some more stuff.

Content.Shared/GameObjects/EntitySystemMessages/MeleeWeaponSystemMessages.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.EntitySystemMessages
+{
+    public static class MeleeWeaponSystemMessages
+    {
+        [Serializable, NetSerializable]
+        public sealed class PlayMeleeWeaponAnimationMessage : EntitySystemMessage
+        {
+            public PlayMeleeWeaponAnimationMessage(string arcPrototype, Angle angle, EntityUid attacker, List<EntityUid> hits)
+            {
+                ArcPrototype = arcPrototype;
+                Angle = angle;
+                Attacker = attacker;
+                Hits = hits;
+            }
+
+            public string ArcPrototype { get; }
+            public Angle Angle { get; }
+            public EntityUid Attacker { get; }
+            public List<EntityUid> Hits { get; }
+        }
+    }
+}