Forcefield Shader

Scripts/Activables/ForceField.cs

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+using Godot;
+using System;
+using Cirno.Scripts;
+using System.Threading.Tasks;
+
+public partial class ForceField : Door
+{
+    [Export]
+    public Shader TurnOffShader { get; private set; }
+    
+    [Export]
+    public Shader ActiveShader { get; private set; }
+
+    // Disable
+    public override void Open()
+    {
+        base.Open();
+        if (TurnOffShader is null) return;
+
+        ((ShaderMaterial)_animatedSprite.Material).Shader = TurnOffShader;
+
+        _ = AnimateShutdownAsync();
+    }
+
+    protected async Task AnimateShutdownAsync() 
+    {
+        Tween tween = GetTree().CreateTween();
+		tween.TweenMethod(Callable.From((float value) => SetShaderScanlineDensity(value)), 0f, 50f, 0.5);
+		tween.Parallel().TweenMethod(Callable.From((float value) => SetShaderTeleportProgress(value)), 0f, 1f, 0.5);
+
+        await ToSignal(tween, "finished");
+    }
+
+    // Enable
+    public override void Close()
+    {
+        base.Close();
+
+        if (ActiveShader is null) return;
+        ((ShaderMaterial)_animatedSprite.Material).Shader = ActiveShader;
+    }
+
+    private void SetShaderTeleportProgress(float value)
+	{
+		((ShaderMaterial)_animatedSprite.Material).SetShaderParameter("teleport_progress", value);
+	}
+
+	private void SetShaderScanlineDensity(float value)
+	{
+		((ShaderMaterial)_animatedSprite.Material).SetShaderParameter("scanline_density", value);
+	}
+}