PirateInvasionShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class PirateInvasionShader : ChromaShader
{
    private readonly Vector4 _cannonBallColor;
 
    private readonly Vector4 _splashColor;
 
    private readonly Vector4 _waterColor;
 
    private readonly Vector4 _backgroundColor;
 
    public PirateInvasionShader(Color cannonBallColor, Color splashColor, Color waterColor, Color backgroundColor)
    {
        _cannonBallColor = cannonBallColor.ToVector4();
        _splashColor = splashColor.ToVector4();
        _waterColor = waterColor.ToVector4();
        _backgroundColor = backgroundColor.ToVector4();
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessLowDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            Vector4 vector = Vector4.Lerp(_waterColor, _cannonBallColor, (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)
    {
        for (int i = 0; i < fragment.Count; i++)
        {
            Point gridPositionOfIndex = fragment.GetGridPositionOfIndex(i);
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            gridPositionOfIndex.X /= 2;
            float num = (NoiseHelper.GetStaticNoise(gridPositionOfIndex.X) * 40f + time * 1f) % 40f;
            float amount = 0f;
            float num2 = num - canvasPositionOfIndex.Y / 1.2f;
            if (num > 1f)
            {
                float num3 = 1f - canvasPositionOfIndex.Y / 1.2f;
                amount = (1f - Math.Min(1f, num2 - num3)) * (1f - Math.Min(1f, num3 / 1f));
            }
            Vector4 vector = _backgroundColor;
            if (num2 > 0f)
            {
                float amount2 = Math.Max(0f, 1.2f - num2 * 4f);
                if (num2 < 0.1f)
                {
                    amount2 = num2 / 0.1f;
                }
                vector = Vector4.Lerp(vector, _cannonBallColor, amount2);
                vector = Vector4.Lerp(vector, _splashColor, amount);
            }
            if (canvasPositionOfIndex.Y > 0.8f)
            {
                vector = _waterColor;
            }
            fragment.SetColor(i, vector);
        }
    }
}