CorruptSurfaceShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class CorruptSurfaceShader : ChromaShader
{
    private readonly Vector4 _baseColor;
 
    private readonly Vector4 _skyColor;
 
    private Vector4 _lightColor;
 
    public CorruptSurfaceShader(Color color)
    {
        _baseColor = color.ToVector4();
        _skyColor = Vector4.Lerp(_baseColor, Color.DeepSkyBlue.ToVector4(), 0.5f);
    }
 
    public CorruptSurfaceShader(Color vineColor, Color skyColor)
    {
        _baseColor = vineColor.ToVector4();
        _skyColor = skyColor.ToVector4();
    }
 
    public override void Update(float elapsedTime)
    {
        _lightColor = Main.ColorOfTheSkies.ToVector4() * 0.75f + Vector4.One * 0.25f;
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessLowDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        Vector4 value = _skyColor * _lightColor;
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            Vector4 vector = Vector4.Lerp(_baseColor, value, (float)Math.Sin(time * 0.5f + canvasPositionOfIndex.X) * 0.5f + 0.5f);
            fragment.SetColor(i, vector);
        }
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessHighDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        Vector4 vector = _skyColor * _lightColor;
        for (int i = 0; i < fragment.Count; i++)
        {
            Point gridPositionOfIndex = fragment.GetGridPositionOfIndex(i);
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            float staticNoise = NoiseHelper.GetStaticNoise(gridPositionOfIndex.X);
            staticNoise = (staticNoise * 10f + time * 0.4f) % 10f;
            float num = 1f;
            if (staticNoise > 1f)
            {
                num = MathHelper.Clamp(1f - (staticNoise - 1.4f), 0f, 1f);
                staticNoise = 1f;
            }
            float num2 = (float)Math.Sin(canvasPositionOfIndex.X) * 0.3f + 0.7f;
            float num3 = staticNoise - (1f - canvasPositionOfIndex.Y);
            Vector4 vector2 = vector;
            if (num3 > 0f)
            {
                float num4 = 1f;
                if (num3 < 0.2f)
                {
                    num4 = num3 * 5f;
                }
                vector2 = Vector4.Lerp(vector2, _baseColor, num4 * num);
            }
            if (canvasPositionOfIndex.Y > num2)
            {
                vector2 = _baseColor;
            }
            fragment.SetColor(i, vector2);
        }
    }
}