PlayerSheetMirror.cs

// Name: PlayerSheetMirror
// Submenu: SMBX
// Author: Enjl
// Title: PlayerSheetMirror
// Version: 1.0
// Desc: Mirrors the right half of a player sprite sheet onto the left half.
// Keywords:
// URL:
// Help:
void Render(Surface dst, Surface src, Rectangle rect)
{
    // Delete any of these lines you don't need
    Rectangle selection = EnvironmentParameters.GetSelection(src.Bounds).GetBoundsInt();
    int CenterX = ((selection.Right - selection.Left) / 2) + selection.Left;
    int CenterY = ((selection.Bottom - selection.Top) / 2) + selection.Top;
    ColorBgra PrimaryColor = EnvironmentParameters.PrimaryColor;
    ColorBgra SecondaryColor = EnvironmentParameters.SecondaryColor;
    int BrushWidth = (int)EnvironmentParameters.BrushWidth;

    int w = src.Width;
    int h = src.Height;
    double cX = w * 0.5;

    int cellWidth = (int) (w * 0.1);
    int cellHeight = (int) (h * 0.1);

    int rightBound = (int) Math.Min(cX, rect.Right);

    ColorBgra CurrentPixel;
    for (int y = rect.Top; y < rect.Bottom; y++)
    {
        if (IsCancelRequested) return;
        for (int x = rect.Left; x < rect.Right; x++)
        {
            int currentCellX = (int) Math.Floor((double) (x / cellWidth));
            int currentCellY = (int) Math.Floor((double) (y / cellHeight));
            int frame = currentCellX * 10 + currentCellY + 2 - 50;
            if (frame <= 0) {
                int xOffset = x - currentCellX * cellWidth;
                int yOffset = y - currentCellY * cellHeight;

                int targetCellX = (int) (Math.Floor((-frame) * 0.1d) * cellWidth) + cellWidth;
                int targetCellY = (int) ((((-frame) % 10)) * cellHeight);
                int newX = (int) (cX - 1 + targetCellX - xOffset);
                int newY = (int) (targetCellY + yOffset);

                newX = Math.Min(Math.Max(newX, 0), w - 1);
                newY = Math.Min(Math.Max(newY, 0), h - 1);

                CurrentPixel = src[newX,newY];
                dst[x,y] = CurrentPixel;
            }
        }
    }
}