That’s one pretty clever use of delegates that you implemented here. So good that it should be simply part of the framework itself.

My first trial with it was to reproduce the “cliché” computer-movie-like text animation that shows a blinking underscore as a carret and draws some text, character by character.
Here is the code:

Interpolators.Timer t1 = Interpolators.Timer.Create(
0.25f,
true,
timer =>
{
if (!this.Text.EndsWith(“_”))
this.Text += “_”;
else
this.Text = this.Text.TrimEnd(new char[] { ‘_’ });
});

Interpolators.Timer.Create(
2.75f,
false,
timer =>
{
Interpolators.Timer t2 = Interpolators.Timer.Create(
0.1f,
true,
timer2 =>
{
int realLength = this.Text.TrimEnd(new char[]{‘_’}).Length;
if (realLength != TITLE.Length)
this.Text = TITLE.Substring(0, realLength + 1);
else
timer2.Stop();
});
});

Then, you just call your usual SpriteBatch.DrawString method using the Text property of the class and you’re done.

Here is a video showing the result (with a little subtility afterwards: randomly selecting characters in the string and replacing them with some others in a quick interpolated loop )
http://blog.will2real.com/?p=188

Thank you so much Nick for this.