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/CameraRecoilComponent.cs

@@ -29,6 +29,10 @@ namespace Content.Client.GameObjects.Components.Mobs
 
         private EyeComponent _eye;
 
+        // Basically I needed a way to chain this effect for the attack lunge animation.
+        // Sorry!
+        public Vector2 BaseOffset { get; set; }
+
         public override void Initialize()
         {
             base.Initialize();
@@ -95,7 +99,7 @@ namespace Content.Client.GameObjects.Components.Mobs
 
         private void _updateEye()
         {
-            _eye.Offset = _currentKick;
+            _eye.Offset = BaseOffset + _currentKick;
         }
     }
 }

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;
+        }
+    }
+}

Content.Client/GameObjects/Components/Mobs/MeleeLungeComponent.cs

@@ -0,0 +1,65 @@
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+
+namespace Content.Client.GameObjects.Components.Mobs
+{
+    [RegisterComponent]
+    public sealed class MeleeLungeComponent : Component
+    {
+        public override string Name => "MeleeLunge";
+
+        private const float ResetTime = 0.3f;
+        private const float BaseOffset = 0.25f;
+
+        private Angle _angle;
+        private float _time;
+
+        public void SetData(Angle angle)
+        {
+            _angle = angle;
+            _time = 0;
+        }
+
+        public void Update(float frameTime)
+        {
+            _time += frameTime;
+
+            var offset = Vector2.Zero;
+            var deleteSelf = false;
+
+            if (_time > ResetTime)
+            {
+                deleteSelf = true;
+            }
+            else
+            {
+                offset = _angle.RotateVec((BaseOffset, 0));
+                offset *= (ResetTime - _time) / ResetTime;
+            }
+
+            if (Owner.TryGetComponent(out CameraRecoilComponent recoilComponent))
+            {
+                recoilComponent.BaseOffset = offset;
+            }
+            else if (Owner.TryGetComponent(out EyeComponent eyeComponent))
+            {
+                eyeComponent.Offset = offset;
+            }
+
+            if (Owner.TryGetComponent(out ISpriteComponent spriteComponent))
+            {
+                // We have to account for rotation so the offset still checks out.
+                // SpriteComponent.Offset is applied before transform rotation (as expected).
+                var worldRotation = Owner.Transform.WorldRotation;
+                spriteComponent.Offset = new Angle(-worldRotation).RotateVec(offset);
+            }
+
+            if (deleteSelf)
+            {
+                Owner.RemoveComponent<MeleeLungeComponent>();
+            }
+        }
+    }
+}