BitsByte.cs

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using System;
using System.Collections.Generic;
using System.IO;
 
namespace Terraria;
 
public struct BitsByte
{
    private static bool Null;
 
    private byte value;
 
    public bool this[int key]
    {
        get
        {
            return (value & (1 << key)) != 0;
        }
        set
        {
            if (value)
            {
                this.value |= (byte)(1 << key);
            }
            else
            {
                this.value &= (byte)(~(1 << key));
            }
        }
    }
 
    public BitsByte(bool b1 = false, bool b2 = false, bool b3 = false, bool b4 = false, bool b5 = false, bool b6 = false, bool b7 = false, bool b8 = false)
    {
        value = 0;
        this[0] = b1;
        this[1] = b2;
        this[2] = b3;
        this[3] = b4;
        this[4] = b5;
        this[5] = b6;
        this[6] = b7;
        this[7] = b8;
    }
 
    public void ClearAll()
    {
        value = 0;
    }
 
    public void SetAll()
    {
        value = byte.MaxValue;
    }
 
    public void Retrieve(ref bool b0)
    {
        Retrieve(ref b0, ref Null, ref Null, ref Null, ref Null, ref Null, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1)
    {
        Retrieve(ref b0, ref b1, ref Null, ref Null, ref Null, ref Null, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2)
    {
        Retrieve(ref b0, ref b1, ref b2, ref Null, ref Null, ref Null, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2, ref bool b3)
    {
        Retrieve(ref b0, ref b1, ref b2, ref b3, ref Null, ref Null, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2, ref bool b3, ref bool b4)
    {
        Retrieve(ref b0, ref b1, ref b2, ref b3, ref b4, ref Null, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2, ref bool b3, ref bool b4, ref bool b5)
    {
        Retrieve(ref b0, ref b1, ref b2, ref b3, ref b4, ref b5, ref Null, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2, ref bool b3, ref bool b4, ref bool b5, ref bool b6)
    {
        Retrieve(ref b0, ref b1, ref b2, ref b3, ref b4, ref b5, ref b6, ref Null);
    }
 
    public void Retrieve(ref bool b0, ref bool b1, ref bool b2, ref bool b3, ref bool b4, ref bool b5, ref bool b6, ref bool b7)
    {
        b0 = this[0];
        b1 = this[1];
        b2 = this[2];
        b3 = this[3];
        b4 = this[4];
        b5 = this[5];
        b6 = this[6];
        b7 = this[7];
    }
 
    public static implicit operator byte(BitsByte bb)
    {
        return bb.value;
    }
 
    public static implicit operator BitsByte(byte b)
    {
        BitsByte result = default(BitsByte);
        result.value = b;
        return result;
    }
 
    public static BitsByte[] ComposeBitsBytesChain(bool optimizeLength, params bool[] flags)
    {
        int num = flags.Length;
        int num2 = 0;
        while (num > 0)
        {
            num2++;
            num -= 7;
        }
        BitsByte[] array = new BitsByte[num2];
        int num3 = 0;
        int num4 = 0;
        for (int i = 0; i < flags.Length; i++)
        {
            array[num4][num3] = flags[i];
            num3++;
            if (num3 == 7 && num4 < num2 - 1)
            {
                array[num4][num3] = true;
                num3 = 0;
                num4++;
            }
        }
        if (optimizeLength)
        {
            int num5 = array.Length - 1;
            while ((byte)array[num5] == 0 && num5 > 0)
            {
                array[num5 - 1][7] = false;
                num5--;
            }
            Array.Resize(ref array, num5 + 1);
        }
        return array;
    }
 
    public static BitsByte[] DecomposeBitsBytesChain(BinaryReader reader)
    {
        List<BitsByte> list = new List<BitsByte>();
        BitsByte item;
        do
        {
            item = reader.ReadByte();
            list.Add(item);
        }
        while (item[7]);
        return list.ToArray();
    }
}