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.Client/GameObjects/Components/Mobs/CombatModeComponent.cs

@@ -0,0 +1,59 @@
+using Content.Client.UserInterface;
+using Content.Shared.GameObjects.Components.Mobs;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Network;
+using Robust.Shared.IoC;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Client.GameObjects.Components.Mobs
+{
+    [RegisterComponent]
+    public sealed class CombatModeComponent : SharedCombatModeComponent
+    {
+        [ViewVariables(VVAccess.ReadWrite)]
+        public bool IsInCombatMode { get; private set; }
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        public TargetingZone ActiveZone { get; private set; }
+
+#pragma warning disable 649
+        [Dependency] private readonly IGameHud _gameHud;
+#pragma warning restore 649
+
+        public override void HandleComponentState(ComponentState curState, ComponentState nextState)
+        {
+            base.HandleComponentState(curState, nextState);
+
+            var state = (CombatModeComponentState) curState;
+
+            IsInCombatMode = state.IsInCombatMode;
+            ActiveZone = state.TargetingZone;
+            UpdateHud();
+        }
+
+        public override void HandleMessage(ComponentMessage message, INetChannel netChannel = null, IComponent component = null)
+        {
+            base.HandleMessage(message, netChannel, component);
+
+            switch (message)
+            {
+                case PlayerAttachedMsg _:
+                    _gameHud.CombatPanelVisible = true;
+                    UpdateHud();
+                    break;
+
+                case PlayerDetachedMsg _:
+                    _gameHud.CombatPanelVisible = false;
+                    break;
+            }
+        }
+
+        private void UpdateHud()
+        {
+            _gameHud.CombatModeActive = IsInCombatMode;
+            _gameHud.TargetingZone = ActiveZone;
+        }
+    }
+}