Wave shader WIP (#288)

* Created wave shader

* more to _CP14 folders

* add to tree

* fix

* pipiipi

* Provided shader uniform to component fields

* Fixed wave shader shit

* goodies

---------

Co-authored-by: Ed <96445749+TheShuEd@users.noreply.github.com>
Co-authored-by: Ed <edwardxperia2000@gmail.com>

Content.Client/_CP14/Wave/CP14WaveShaderSystem.cs

@@ -0,0 +1,53 @@
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Client._CP14.Wave;
+
+public sealed class CP14WaveShaderSystem : EntitySystem
+{
+    [Dependency] private readonly IPrototypeManager _protoMan = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    private ShaderInstance _shader = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        _shader = _protoMan.Index<ShaderPrototype>("Wave").InstanceUnique();
+
+        SubscribeLocalEvent<CP14WaveShaderComponent, ComponentStartup>(OnStartup);
+        SubscribeLocalEvent<CP14WaveShaderComponent, ComponentShutdown>(OnShutdown);
+        SubscribeLocalEvent<CP14WaveShaderComponent, BeforePostShaderRenderEvent>(OnBeforeShaderPost);
+    }
+
+    private void OnStartup(Entity<CP14WaveShaderComponent> entity, ref ComponentStartup args)
+    {
+        entity.Comp.Offset = _random.NextFloat(0, 1000);
+        SetShader(entity.Owner, _shader);
+    }
+
+    private void OnShutdown(Entity<CP14WaveShaderComponent> entity, ref ComponentShutdown args)
+    {
+        SetShader(entity.Owner, null);
+    }
+
+    private void SetShader(Entity<SpriteComponent?> entity, ShaderInstance? instance)
+    {
+        if (!Resolve(entity, ref entity.Comp, false))
+            return;
+
+        entity.Comp.PostShader = instance;
+        entity.Comp.GetScreenTexture = instance is not null;
+        entity.Comp.RaiseShaderEvent = instance is not null;
+    }
+
+    private void OnBeforeShaderPost(Entity<CP14WaveShaderComponent> entity, ref BeforePostShaderRenderEvent args)
+    {
+        _shader.SetParameter("Speed", entity.Comp.Speed);
+        _shader.SetParameter("Dis", entity.Comp.Dis);
+        _shader.SetParameter("Offset", entity.Comp.Offset);
+    }
+}