Here we go. A very hard thing that I start here. You can see it in the topic subject, I want to create a tornado. I want it to be realistic, fast(no low fps), and moveable.

It could do random movements (with a limit of distance), and would die after some seconds / minutes .

Here's a video of a realistic one, pretty amazing (thanks to people who gave me the link)

Video on YouTube

Anyway. It would be nice if anyone could give his idea on how to make a good looking tornado.

But For what? For my storm chasing game, Fujita5. You can check out this post:
Here

Thanks in advance.
Mark

Yeah, not easy at all.
I think there is a user contribution related to real-time wind and i have the idea that it can be expanded to some kind of a tornado, too bad i dont remember the post..

Also, i have the idea that in the templates (A5?) tech demo level, there was a tornado using a dll.

Well, sorry for not helping you much more..

i would do it that way: create sprites at the bottom and let them with sin and cos rotate around a ( curved) center and make the radius bigger so heigher they come, this big sprites you can let create particles.
then some sprites that go over the floor as kind of dust and some which have a complete random moving, so that the tornado dont look too linear...

I don't understand the radius thing...

Can bones be good for a tornado? Oh, anyway I have Extra so ... nevermind.

Thanks scorpion and demigod.

Any other ideas?

1 passable, invisible entity, move it around randomly, and give it the action tornado

Code:

---

action tornado_sprite()
{
	var distance;
	my.facing = on;
	while(my.skill3 == 0)
	{
		wait(1);
	}
	
	while(1)
	{
		distance + = 1;
		my.skill2 + = my.skill1 * time;
		you = ptr_for_handle(my.skill3);
		
		my.x = sin(my.skill2)*distance + you.x;
		my.y = cos(my.skill2)*distance + you.y;
		my.z += 1*time;
		my.roll + = my.skill1*time;
		wait(1);
	}
}


action tornado()
{
	my.passable = on;
	my.invisible = on;
	while(1)
	{
		//move me here...
		you = ent_create(sprite_tga,my.x,tornado_sprite);
		you.skill1 = random(10)+2;
		you.skill2 = random(360);
		you.scale_x = random(2)+1;
		you.scale_y = you.scale_x;
		you.skill3 = handle(my);
		wait(1);
	}
}

---

every second, the entity creates sprites, which rotate around it...


No idea if that works. Off course, if you want to use physics just like they do in that movie, you'll need to either programm fake physics yourself or get pro^^...

Looks awesome though, that movie. I'd love to play a game like that

Hope I was of any help...

yeah, i thought about something like that, but now it is a line s that is straigt to the sky, you should make the center to center=center+20*sin(my.z*5) or something...

Uh, good to know it works, at least sort of, sorry, I didn't test it.
try just changing this line:
distance + = .1;

to

distance + = 2;
?
I'll edit it in my previous post... just fiddle around with the "2"...:)

Micha

no, i didnt test it
but ill do now...

edit: workin on the tornado at time...

Hey, not bad. Not bad at all. I'd like to see it in action though.

Just add a few [large] dust particles around it that move slower, and you'll have a pretty professional tornado...

Yeah man it looks pretty good ! The rotating sprites (or particles?) could be faster in the center and slower around it.

You made a good job, it will surely be usefull very soon.