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Making a curved slide

 
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Daaark
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PostPosted: Sun Jan 15, 2006 12:55 am    Post subject: Making a curved slide Reply with quote

I can't post in the pro forum (why do people post non pro specific things in there). So I have to make this topic.

What I would do is make the slide in 2d first, from the top down. This way you can probably segment it and curve it without worrying about the vertical space. Then you can simply lift it from the bottom up, a section at a time.

To practice, you can use a series of rectangles and work out how you want the shape and curve to be. When you lift it and it works, you can do it again with whatever more complex geometry you'll want for the body of the slide.

Basically this would be modelling 1 segment of the slide, and then repeat this for the length of the slide, curving where needed.

I think this is hard to explain without visual aids. Laughing But hopefully you get the idea. This shouldn't be too difficult. But I can elaborate if you don't understand.
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trucker2000
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PostPosted: Sun Jan 15, 2006 1:19 am    Post subject: Reply with quote

Quote:
I can't post in the pro forum (why do people post non pro specific things in there). So I have to make this topic.

Not thinking?

Thanks for the explination. I've been working on this all day. (mostly)
Your suggestion makes since. It's flat in 2d, then can be made 3d by raising it up. My problem is, how to I make the sides and top smooth?
I don't want people sliding off into the big black sea. (plus it's supposed to look like it's underground)
I've tried boxes and cylendars, but the boxes are too jagged at the corners, and the cylendars leave large gaps at the tops.
I'll try your idea and see if I can get somewhere with it.
Thanks. Smile
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Daaark
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PostPosted: Sun Jan 15, 2006 1:48 am    Post subject: Reply with quote

That's where the rectangles come in. You use this to find the shape and then when it works, you make your small slide part to copy and paste along the length of the side. Like box modelling a 'u' shape. Then you use this part like the rectangles, and you edit each part to fit the part in the chain. Each low poly U shape will be able to bend and be fit into this plan you made with the rectangles.

The rectangles also made sure you have a good plan and will know the requirements, instead of screwing up 50 times by attempting it on the fly.

If you mess up, it's just a matter of deleting that segment, and making another copy of the first slide segment. When it's done, it's as simple as merging the whole thing.
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trucker2000
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PostPosted: Sun Jan 15, 2006 2:49 am    Post subject: Reply with quote

I think this is what you are suggesting:



This is definately going to be a challenge. There are 3 different shapes there to get the shape I need. Shocked
It may be workable tho. I'll have to try it with boxes and see what I can come up with.
Thanks for the suggestion. I hadn't thought about doing it this way first.

Now, if I could rotate the side or front view, this would be much simpler.
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Daaark
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PostPosted: Sun Jan 15, 2006 3:12 am    Post subject: Reply with quote

You need to snap those so they are perfectly together. What do you need 3 shapes for? I can come up with a nice slide shape by extruding a cube 6 times. That's 1 shape, and a real easy shape to turn into a slide.
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trucker2000
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PostPosted: Sun Jan 15, 2006 4:03 am    Post subject: Reply with quote

LOL. I hadn't thought about extruding. Embarassed
I usually do things the hard way I guess.
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Daaark
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PostPosted: Sun Jan 15, 2006 4:22 am    Post subject: Reply with quote

6 extrusions. Use the center 4 parts for the slide part, and then you have 1 part left on each edge to make the side parts. When you link them up, you will have to kill off the front and back faces, but keep 1 copy with all the faces just incase you need to redo the first or last piece.
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Daaark
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PostPosted: Sun Jan 15, 2006 8:28 am    Post subject: Reply with quote

Up way too late tonight in Deled. Embarassed I created a slide example for you. just 1 segment. Made a cube with 6 x segment, and formed a slide piece for you.


Just copy and paste these along your 'slide plan' and you are all set. Just remember the middle pieces shoudl not have the polygons in the front and back (massive waste) so make another copy, and delete those, and use that to paste in between the first and last pieces.
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trucker2000
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PostPosted: Sun Jan 15, 2006 5:56 pm    Post subject: Reply with quote

Thankyou.
I tried making my slide in different ways, but ended up using cubes for the floor. Had this worked, I would have just added walls and a roof.
The screenshot doesnt do it justice, but here it is:



Now, my problem is with Irrlicht's collision. You dont slide, and you get stuck in the slide 1/4 of the way down. Confused Now, if you jump off the side just outside the door, you land on the lower part, but get stuck 1/4 of the way up. (when trying to go back up)
Oh well, back to fixing my elevator.
I'm going to make a model file of the slide for future use tho. Smile (wouldn't want to lose all that work.)
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Daaark
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PostPosted: Sun Jan 15, 2006 11:38 pm    Post subject: Reply with quote

It appears that you just extruded the whole slide a bit instead of using proper slide pieces? There appear to be some rough edges between segments as well.
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trucker2000
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PostPosted: Mon Jan 16, 2006 1:16 am    Post subject: Reply with quote

Vampyre_Dark wrote:
It appears that you just extruded the whole slide a bit instead of using proper slide pieces? There appear to be some rough edges between segments as well.

Yes, there are a few rough edges, but I get stuck in the middle of a peice.
Oh well. It was an idea.
I know how to make them now tho. Smile

Edit to add:
I found out why I get stuck. Embarassed
My peices turn and twist and Irrlicht doesn't like the twist. I'm going to have to flatten them out for them to work.
I may just remove the elevator, put some fog in, and a portal billboard and let everyone just fall down the shaft. Laughing
(naw, I plan to fix the elevator)
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Paul-Jan
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PostPosted: Mon Jan 16, 2006 6:25 am    Post subject: Reply with quote

Ouch, twist as in "draw a rectangle, select two vertices and rotate them relatively to the other two"? DeleD does make it fairly easy to make 'non-planar polygons' like that, but not many applications will swallow that flawlessly.
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trucker2000
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PostPosted: Mon Jan 16, 2006 9:21 am    Post subject: Reply with quote

Lol. You are correct. It's easy enough to fix. I did a few tests last night,, and they worked, so will get this fixed, then work on Irrlichts gravity to see if I can slide. Smile
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Paul-Jan
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PostPosted: Tue Jan 17, 2006 6:12 am    Post subject: Reply with quote

Ah cool! For a moment there, I wasn't too sure wether that would be easy to fix Smile
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trucker2000
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PostPosted: Tue Jan 17, 2006 10:59 am    Post subject: Reply with quote

Plenty easy enough. I just have to remake a few peices and place them flat.
Irrlicht also has an eclipsoid collision property for the camera, and you can set the slide factor. Smile
I'll be studying up on these (just to see them work) while working on a different solution.
I started this becouse irrlicht has no "easy" way to make an elevator. I need to move people from 1 floor to the other.
I'm looking into making a portal now. Krama posted a great guide, so will be working on coding that.
I'm not giving up on this eather tho, becouse I can see where it has some real "WoW" and fun factors.
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