/// <inheritdoc/>
public override void OnAdded(IScreenObject host)
{
if (_screen != null)
{
throw new Exception("Component has already been added to a host.");
}
if (!(host is IScreenSurface surface))
{
throw new ArgumentException($"Must add this component to a type that implements {nameof(IScreenSurface)}");
}
if (RenderStep != null)
{
surface.RenderSteps.Remove(RenderStep);
RenderStep.Dispose();
}
RenderStep = GameHost.Instance.GetRendererStep(Renderers.Constants.RenderStepNames.EntityRenderer);
RenderStep.SetData(this);
surface.RenderSteps.Add(RenderStep);
_screen = surface;
_isAttached = true;
UpdateCachedVisibilityArea();
}
/// <inheritdoc/>
public override void OnRemoved(IScreenObject host)
{
((IScreenSurface)host).RenderSteps.Remove(RenderStep);
RenderStep?.Dispose();
RenderStep = null;
_screen = null;
_screenCachedFont = null;
_screenCachedFontSize = Point.None;
_screenCachedView = Rectangle.Empty;
_isAttached = false;
}
