Motion blur

What would be the best way to create a smooth motion blur for an object? Say a simple semi-transparent grey brick was traveling across the sreen and I want a motion blur to trail after it?

I don't have a clue as how to implement the effect in code and have only thought of the possibility of creating several images for each object.

This is the kind of effect I'm going for:

http://img99.imageshack.us/img99/892...led1gj6.th.png
(From Crimsonland)

Just made something quickly the best is going to be to use the lens object.
Add a lens object behind the traveling brick gives you a blur effect.
The background will need some texture to make it look good.

If you need the example let me know.

Clone the object and make it "Motion Trail", then you could always or "every 01 millisecond" create the motion trail object at the position of the main object. Just remember to always keep the main object layered in front.

I would like an example, because all of my tests with the lens object were very slow.... :x

I tried to have a set of objects trail behind the bullets. However, I could never get the trail to look smooth : /

Lens object? Motion blur is not distorting something, it appears when an object moves too fast while the shutter on a camera is open. Why would you use the lens object?

Anyhoo, you're not going to be able to get it smooth, and have it run smoothly as well. Crimsonland uses hardware acceleration and such, MMF2 doesn't have hardware acceleration (yet, it's on the to-do list). As it is now, there isn't really a way to draw an antialiased line that fades out towards the end.

What you can do if you really want that effect is have an active object, not too big, probably about 3x10, and stretch it out how you need the bullet trail to be. I'll make an example for you real quick.

EDIT: Ok here's the example I said I'd make. Click ME!!!!

Also remember that MMF2 supports alpha channels in active objects. You can create a version of the sprite that has the motion blur built into it if you want by making a version of image with the blur already applied.

But then the collision conditions also apply to the blur.

You can put a pre-blurred sub-object underneath the real one, or use an invisible sub-object for collision detection.

Quote:

---

Originally Posted by LazyCoder

But then the collision conditions also apply to the blur.

---

Or you could test for the collisions with the normal bullet and at the end of the event list, change the animation to blurred.

But with my way, it can be variable lengths.

If it proves to be just too slow with many objects, then you can use the pre blurred method.

The way I see it, you can either have flexibility or speed.

I was actually assuming you'd be stretching the pre-blurred version.