private void DrawBrick(Context context, BrickCell cell)
        {
            DrawCellImage(context, cell, breakableImage);

            if (CVars.g_drawHiddenPowerups.boolValue)
            {
                int powerup = cell.powerup;
                if (powerup != Powerups.None)
                {
                    TextureImage powerupImage = powerupImages[powerup];
                    float drawX = cell.GetPx() - 0.5f * powerupImage.GetWidth();
                    float drawY = cell.GetPy() - 0.5f * powerupImage.GetHeight();
                    context.DrawImage(powerupImage, drawX, drawY, 0.25f);
                }
            }
        }