public ScreenSurface CreateRender(Point?viewSize = null)
{
var(viewWidth, viewHeight) = viewSize ?? (Width, Height);
var cellSurface = new CellSurface(viewWidth, viewHeight, 100, 100);
_renderer = new ScreenSurface(cellSurface);
_entityRenderer = new Renderer();
_renderer.SadComponents.Add(_entityRenderer);
_renderer.SadComponents.Add(new MapRendererMouseProcessor(this));
// add any entity associated with the map the to entity renderer
_entityRenderer.AddRange(Entities.Items.Cast <Entity>());
return(_renderer);
}
