Add Smoke and Foam chemical reaction effects. (#2913)

* Adds smoke reaction effect

* smoke tweaks

* address reviews

* Smoke fix

* Refactor smoke and add foam

* Fix stuff

* Remove thing

* Little things

* Address some comments

* Address more things

* More addressing

* License stuff

* Address refactor request

* Small things

* Add nullability

* Update Content.Server/GameObjects/EntitySystems/SolutionAreaEffectSystem.cs

Co-authored-by: Paul Ritter <ritter.paul1@googlemail.com>

Content.Client/GameObjects/Components/Chemistry/FoamVisualizer.cs

@@ -0,0 +1,74 @@
+#nullable enable
+using System;
+using Content.Shared.GameObjects.Components.Chemistry;
+using JetBrains.Annotations;
+using Robust.Client.Animations;
+using Robust.Client.GameObjects;
+using Robust.Client.GameObjects.Components.Animations;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Maths;
+using Robust.Shared.Utility;
+using YamlDotNet.RepresentationModel;
+
+namespace Content.Client.GameObjects.Components.Chemistry
+{
+    [UsedImplicitly]
+    public class FoamVisualizer : AppearanceVisualizer
+    {
+        private const string AnimationKey = "foamdissolve_animation";
+        private Animation _foamDissolve = new();
+        public override void LoadData(YamlMappingNode node)
+        {
+            base.LoadData(node);
+
+            var delay = 0.6f;
+            var state = "foam-dissolve";
+
+            if (node.TryGetNode("animationTime", out var delayNode))
+            {
+                delay = delayNode.AsFloat();
+            }
+
+            if (node.TryGetNode("animationState", out var stateNode))
+            {
+                state = stateNode.AsString();
+            }
+
+            _foamDissolve = new Animation {Length = TimeSpan.FromSeconds(delay)};
+            var flick = new AnimationTrackSpriteFlick();
+            _foamDissolve.AnimationTracks.Add(flick);
+            flick.LayerKey = FoamVisualLayers.Base;
+            flick.KeyFrames.Add(new AnimationTrackSpriteFlick.KeyFrame(state, 0f));
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (component.TryGetData<bool>(FoamVisuals.State, out var state))
+            {
+                if (state)
+                {
+                    if (component.Owner.TryGetComponent(out AnimationPlayerComponent? animPlayer))
+                    {
+                        if (!animPlayer.HasRunningAnimation(AnimationKey))
+                            animPlayer.Play(_foamDissolve, AnimationKey);
+                    }
+                }
+            }
+
+            if (component.TryGetData<Color>(FoamVisuals.Color, out var color))
+            {
+                if (component.Owner.TryGetComponent(out ISpriteComponent? sprite))
+                {
+                    sprite.Color = color;
+                }
+            }
+        }
+    }
+
+    public enum FoamVisualLayers : byte
+    {
+        Base
+    }
+}

Content.Client/GameObjects/Components/Chemistry/SmokeVisualizer.cs

@@ -0,0 +1,26 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Chemistry;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+using Robust.Shared.Maths;
+
+namespace Content.Client.GameObjects.Components.Chemistry
+{
+    [UsedImplicitly]
+    public class SmokeVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (component.TryGetData<Color>(SmokeVisuals.Color, out var color))
+            {
+                if (component.Owner.TryGetComponent(out ISpriteComponent? sprite))
+                {
+                    sprite.Color = color;
+                }
+            }
+        }
+    }
+}

Content.Client/IgnoredComponents.cs

@@ -236,6 +236,8 @@ namespace Content.Client
             "SliceableFood",
             "DamageOtherOnHit",
             "DamageOnLand",
+            "SmokeSolutionAreaEffect",
+            "FoamSolutionAreaEffect",
             "GasFilter",
             "Recyclable",
             "SecretStash",