Terraria.Tile.frameNumber C# (CSharp) Method

        public byte frameNumber()
        {
            return (byte)(((int)this.bTileHeader2 & 48) >> 4);
        }

        public static void SelfFrame8Way(int i, int j, Tile centerTile, bool resetFrame)
        {
            if (!centerTile.active())
            {
                return;
            }
            BlockStyle blockStyle  = FindBlockStyle(centerTile);
            int        num         = 0;
            BlockStyle blockStyle2 = default(BlockStyle);

            if (blockStyle.top)
            {
                Tile tileSafely = GetTileSafely(i, j - 1);
                if (tileSafely.active() && WillItBlend(centerTile.type, tileSafely.type))
                {
                    blockStyle2 = FindBlockStyle(tileSafely);
                    if (blockStyle2.bottom)
                    {
                        num |= 1;
                    }
                    else
                    {
                        blockStyle2.Clear();
                    }
                }
            }
            BlockStyle blockStyle3 = default(BlockStyle);

            if (blockStyle.left)
            {
                Tile tileSafely2 = GetTileSafely(i - 1, j);
                if (tileSafely2.active() && WillItBlend(centerTile.type, tileSafely2.type))
                {
                    blockStyle3 = FindBlockStyle(tileSafely2);
                    if (blockStyle3.right)
                    {
                        num |= 2;
                    }
                    else
                    {
                        blockStyle3.Clear();
                    }
                }
            }
            BlockStyle blockStyle4 = default(BlockStyle);

            if (blockStyle.right)
            {
                Tile tileSafely3 = GetTileSafely(i + 1, j);
                if (tileSafely3.active() && WillItBlend(centerTile.type, tileSafely3.type))
                {
                    blockStyle4 = FindBlockStyle(tileSafely3);
                    if (blockStyle4.left)
                    {
                        num |= 4;
                    }
                    else
                    {
                        blockStyle4.Clear();
                    }
                }
            }
            BlockStyle blockStyle5 = default(BlockStyle);

            if (blockStyle.bottom)
            {
                Tile tileSafely4 = GetTileSafely(i, j + 1);
                if (tileSafely4.active() && WillItBlend(centerTile.type, tileSafely4.type))
                {
                    blockStyle5 = FindBlockStyle(tileSafely4);
                    if (blockStyle5.top)
                    {
                        num |= 8;
                    }
                    else
                    {
                        blockStyle5.Clear();
                    }
                }
            }
            if (blockStyle2.left && blockStyle3.top)
            {
                Tile tileSafely5 = GetTileSafely(i - 1, j - 1);
                if (tileSafely5.active() && WillItBlend(centerTile.type, tileSafely5.type))
                {
                    BlockStyle blockStyle6 = FindBlockStyle(tileSafely5);
                    if (blockStyle6.right && blockStyle6.bottom)
                    {
                        num |= 0x10;
                    }
                }
            }
            if (blockStyle2.right && blockStyle4.top)
            {
                Tile tileSafely6 = GetTileSafely(i + 1, j - 1);
                if (tileSafely6.active() && WillItBlend(centerTile.type, tileSafely6.type))
                {
                    BlockStyle blockStyle7 = FindBlockStyle(tileSafely6);
                    if (blockStyle7.left && blockStyle7.bottom)
                    {
                        num |= 0x20;
                    }
                }
            }
            if (blockStyle5.left && blockStyle3.bottom)
            {
                Tile tileSafely7 = GetTileSafely(i - 1, j + 1);
                if (tileSafely7.active() && WillItBlend(centerTile.type, tileSafely7.type))
                {
                    BlockStyle blockStyle8 = FindBlockStyle(tileSafely7);
                    if (blockStyle8.right && blockStyle8.top)
                    {
                        num |= 0x40;
                    }
                }
            }
            if (blockStyle5.right && blockStyle4.bottom)
            {
                Tile tileSafely8 = GetTileSafely(i + 1, j + 1);
                if (tileSafely8.active() && WillItBlend(centerTile.type, tileSafely8.type))
                {
                    BlockStyle blockStyle9 = FindBlockStyle(tileSafely8);
                    if (blockStyle9.left && blockStyle9.top)
                    {
                        num |= 0x80;
                    }
                }
            }
            if (resetFrame)
            {
                centerTile.frameNumber((byte)WorldGen.genRand.Next(0, 3));
            }
            Point16 point = selfFrame8WayLookup[num][centerTile.frameNumber()];

            centerTile.frameX = point.X;
            centerTile.frameY = point.Y;
        }