TorchID.cs

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using System.Runtime.InteropServices;
using Microsoft.Xna.Framework;
 
namespace Terraria.ID;
 
public static class TorchID
{
    private interface ITorchLightProvider
    {
        void GetRGB(out float r, out float g, out float b);
    }
 
    private struct ConstantTorchLight : ITorchLightProvider
    {
        public float R;
 
        public float G;
 
        public float B;
 
        public ConstantTorchLight(float Red, float Green, float Blue)
        {
            R = Red;
            G = Green;
            B = Blue;
        }
 
        public void GetRGB(out float r, out float g, out float b)
        {
            r = R;
            g = G;
            b = B;
        }
    }
 
    [StructLayout(LayoutKind.Sequential, Size = 1)]
    private struct DemonTorchLight : ITorchLightProvider
    {
        public void GetRGB(out float r, out float g, out float b)
        {
            r = 0.5f * Main.demonTorch + (1f - Main.demonTorch);
            g = 0.3f;
            b = Main.demonTorch + 0.5f * (1f - Main.demonTorch);
        }
    }
 
    [StructLayout(LayoutKind.Sequential, Size = 1)]
    private struct ShimmerTorchLight : ITorchLightProvider
    {
        public void GetRGB(out float r, out float g, out float b)
        {
            float num = 0.9f;
            float num2 = 0.9f;
            num += (float)(270 - Main.mouseTextColor) / 900f;
            num2 += (float)(270 - Main.mouseTextColor) / 125f;
            num = MathHelper.Clamp(num, 0f, 1f);
            num2 = MathHelper.Clamp(num2, 0f, 1f);
            r = num * 0.9f;
            g = num2 * 0.55f;
            b = num * 1.2f;
        }
    }
 
    [StructLayout(LayoutKind.Sequential, Size = 1)]
    private struct DiscoTorchLight : ITorchLightProvider
    {
        public void GetRGB(out float r, out float g, out float b)
        {
            r = (float)Main.DiscoR / 255f;
            g = (float)Main.DiscoG / 255f;
            b = (float)Main.DiscoB / 255f;
        }
    }
 
    public static int[] Dust = new int[24]
    {
        6, 59, 60, 61, 62, 63, 64, 65, 75, 135,
        158, 169, 156, 234, 66, 242, 293, 294, 295, 296,
        297, 298, 307, 310
    };
 
    private static ITorchLightProvider[] _lights;
 
    public const short Torch = 0;
 
    public const short Blue = 1;
 
    public const short Red = 2;
 
    public const short Green = 3;
 
    public const short Purple = 4;
 
    public const short White = 5;
 
    public const short Yellow = 6;
 
    public const short Demon = 7;
 
    public const short Cursed = 8;
 
    public const short Ice = 9;
 
    public const short Orange = 10;
 
    public const short Ichor = 11;
 
    public const short UltraBright = 12;
 
    public const short Bone = 13;
 
    public const short Rainbow = 14;
 
    public const short Pink = 15;
 
    public const short Desert = 16;
 
    public const short Coral = 17;
 
    public const short Corrupt = 18;
 
    public const short Crimson = 19;
 
    public const short Hallowed = 20;
 
    public const short Jungle = 21;
 
    public const short Mushroom = 22;
 
    public const short Shimmer = 23;
 
    public static readonly short Count = 24;
 
    public static void Initialize()
    {
        ITorchLightProvider[] array = new ITorchLightProvider[Count];
        array[0] = new ConstantTorchLight(1f, 0.95f, 0.8f);
        array[1] = new ConstantTorchLight(0f, 0.1f, 1.3f);
        array[2] = new ConstantTorchLight(1f, 0.1f, 0.1f);
        array[3] = new ConstantTorchLight(0f, 1f, 0.1f);
        array[4] = new ConstantTorchLight(0.9f, 0f, 0.9f);
        array[5] = new ConstantTorchLight(1.4f, 1.4f, 1.4f);
        array[6] = new ConstantTorchLight(0.9f, 0.9f, 0f);
        array[7] = default(DemonTorchLight);
        array[8] = new ConstantTorchLight(1f, 1.6f, 0.5f);
        array[9] = new ConstantTorchLight(0.75f, 0.85f, 1.4f);
        array[10] = new ConstantTorchLight(1f, 0.5f, 0f);
        array[11] = new ConstantTorchLight(1.4f, 1.4f, 0.7f);
        array[12] = new ConstantTorchLight(0.75f, 1.3499999f, 1.5f);
        array[13] = new ConstantTorchLight(0.95f, 0.75f, 1.3f);
        array[14] = default(DiscoTorchLight);
        array[15] = new ConstantTorchLight(1f, 0f, 1f);
        array[16] = new ConstantTorchLight(1.4f, 0.85f, 0.55f);
        array[17] = new ConstantTorchLight(0.25f, 1.3f, 0.8f);
        array[18] = new ConstantTorchLight(0.95f, 0.4f, 1.4f);
        array[19] = new ConstantTorchLight(1.4f, 0.7f, 0.5f);
        array[20] = new ConstantTorchLight(1.25f, 0.6f, 1.2f);
        array[21] = new ConstantTorchLight(0.75f, 1.45f, 0.9f);
        array[22] = new ConstantTorchLight(0.3f, 0.78f, 1.2f);
        array[23] = default(ShimmerTorchLight);
        _lights = array;
    }
 
    public static void TorchColor(int torchID, out float R, out float G, out float B)
    {
        if (torchID < 0 || torchID >= _lights.Length)
        {
            R = (G = (B = 0f));
        }
        else
        {
            _lights[torchID].GetRGB(out R, out G, out B);
        }
    }
}