Fishy swarmers: Carp content and Space Dragon! (#7395)

Co-authored-by: mirrorcult <lunarautomaton6@gmail.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>
Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Client/MobState/DamageStateVisualizerSystem.cs

@@ -0,0 +1,57 @@
+using Content.Shared.MobState;
+using Robust.Client.GameObjects;
+using DrawDepth = Content.Shared.DrawDepth.DrawDepth;
+
+namespace Content.Client.MobState;
+
+public sealed class DamageStateVisualizerSystem : VisualizerSystem<DamageStateVisualsComponent>
+{
+    protected override void OnAppearanceChange(EntityUid uid, DamageStateVisualsComponent component, ref AppearanceChangeEvent args)
+    {
+        var sprite = args.Sprite;
+
+        if (sprite == null || !args.Component.TryGetData(DamageStateVisuals.State, out DamageState data))
+        {
+            return;
+        }
+
+        if (!component.States.TryGetValue(data, out var layers))
+        {
+            return;
+        }
+
+        if (component.Rotate)
+        {
+            sprite.NoRotation = data switch
+            {
+                DamageState.Critical => false,
+                DamageState.Dead => false,
+                _ => true
+            };
+        }
+
+        // Brain no worky rn so this was just easier.
+        foreach (var layer in sprite.AllLayers)
+        {
+            layer.Visible = false;
+        }
+
+        foreach (var (key, state) in layers)
+        {
+            sprite.LayerSetVisible(key, true);
+            sprite.LayerSetState(key, state);
+        }
+
+        // So they don't draw over mobs anymore
+        if (data == DamageState.Dead && sprite.DrawDepth > (int) DrawDepth.Items)
+        {
+            component.OriginalDrawDepth = sprite.DrawDepth;
+            sprite.DrawDepth = (int) DrawDepth.Items;
+        }
+        else if (component.OriginalDrawDepth != null)
+        {
+            sprite.DrawDepth = component.OriginalDrawDepth.Value;
+            component. OriginalDrawDepth = null;
+        }
+    }
+}