CalculateGameView

//Draw the gameview
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{

    int GVOriginX, GVOriginY;

    GVOriginX = fov.Player.X - iViewWidth / 2;
    GVOriginY = fov.Player.Y - iViewHeight / 2;

    if (GVOriginX < 0)
        GVOriginX = 0;
    else if (GVOriginX + iViewWidth > fov.map.GetLength(0))
        GVOriginX -= (GVOriginX + iViewWidth - fov.map.GetLength(0));

    if (GVOriginY < 0)
        GVOriginY = 0;
    else if (GVOriginY + iViewHeight > fov.map.GetLength(1))
        GVOriginY -= (GVOriginY + iViewHeight - fov.map.GetLength(1));


    for (int x = 0 ; x < iViewWidth; x++)
        for (int y = 0; y < iViewHeight; y++)
            if (fov.map[x + GVOriginX, y + GVOriginY] == 0)
                {
                    //draw the bFloor in the specified point
                    e.Graphics.DrawImage(bFloor, new Point(x * iTileWidth,
                                                           y * iTileHeight));
                    //FOV Algorithm:
                    //if the map cell being drawn is not contained in 
                    //the VisualPoints list generated by the FOV algorithm, draw the fog over it
                    if (!fov.VisiblePoints.Contains(new Point(x + GVOriginX, y + GVOriginY)))
                        e.Graphics.DrawImage(bFog, new Point(x  * iTileWidth
                                                              , y * iTileHeight));                  
                        
                }

    //draw the bPlayer bitmap in the specified point
    e.Graphics.DrawImage(bPlayer, new Point((fov.Player.X - GVOriginX) * iTileWidth  
                                        , (fov.Player.Y - GVOriginY) * iTileHeight ));

}