Archive: 6 posts

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I'm always looking for ways to make sure my more ambitiously-created vehicles don't get stuck or flipped -- while enabling them to do more than just roll on a straight line -- because they're often pretty key to what I'm doing. In butting my head against a few obstacles design-wise, I've really wanted a vehicle that could climb over things when it got stuck. I've tried making a wide vehicle with the platform in the middle plane and oblong wheels (in different starting positions) bolted to either side. That gave the vehicle a kind of interesting-to-watch "Tennessee walking horse" motion but wasn't very useful otherwise. I've tried making a wheel that has equidistant triangles extending from it with stiff rods (tee-hee) but that wasn't very effective either. Has anyone come up with anything like this? The next couple of things I'm thinking of trying are some flexible treads made up of a lot of chained little pieces (this one kind of seems like a hail mary) and one for which I'm a little more optimistic, based on a flashback to toy commercials I remember from the late 80s or so: there was an RC car with wheels that came apart (as in, each wheel starts as a normal round wheel, then breaks outward into three pieces to climb over rocks). Maybe I just don't have the physics chops yet, but I'm trying. If anyone has already made/seen a solution, though, please share!

2008-11-19 15:34:00 Author: GeoSoto18 Posts: 12

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well you may be barking up the wrong tree to a certain extent because friction is a constant in the game, and only relates to differing materials (as in life I suppose but not quite the same). I reckon you best bet would be a rubber coated caterpillar track (I couldn't find belts in the game has it got them?), unfortunately as you say this would involve a lot of time and thermometer use to complete. I reckon the best bet would be rubber for both the tyres and the surface its driving over and make the wheels as large as you possibly can and/or give it lots of power. Or make the obstacle of the forewardmost layer then in the next layer back make a belt with hooks on it that runs up the slope but is hidden behind the obstacles on the front layer. Then add somthing on the bottom of the vehicle to catch the hooks on the track and the track will then hoist it past the obstacles (like a rollercoaster car). Or use a bit of string attached to a wheel like a winch. My final suggestion would be to use the smallest obstacles possible and add treads to the wheel bigger than the obstacles, that would do it as well. Or use pistons to make a walker. Essentially if the obstacles are too large then no matter what you do it won't get over them. as a rule of thumb obstacles a thrid of the wheel size may just about do it.

2008-11-19 16:17:00 Author: Piratepete Posts: 110

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I don't think treads work properly in LBP. From all of the videos of tanks I have seen, none of those employing treads had a smooth, tank-like motion. Most of them would remain motionless when trying to go over the simplest obstacles (such as a small golf ball), and would even start to move backwards!

2008-11-19 16:26:00 Author: Gilgamesh Posts: 2536

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Put rockets on your car pointing downward, to force it into the ground. This probably wont work on all terrain types because it depends how it is getting stuck, but you can add so much force that your car will even climb walls and drive upside-down on a ceiling.

2008-11-19 16:38:00 Author: Risen Posts: 251

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I don't think treads work properly in LBP. From all of the videos of tanks I have seen, none of those employing treads had a smooth, tank-like motion. Most of them would remain motionless when trying to go over the simplest obstacles (such as a small golf ball), and would even start to move backwards! I would agree with you but there are several story levels that have conveyor belts on them, same pricipal but moving. TBH I haven't tried to import a story level for dissection yet so not sure. Another idea. make a wheeled vehicle as normal then attach a leg with a slot in the centre of it. pivot the leg above the wheel and a fixed pivot in the wheel with the other end of the pivot in the slot. Then when the wheel rotates the legs will go like billy-o. Quick and easy walker I reckon.

2008-11-19 16:46:00 Author: Piratepete Posts: 110

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Before I got the game, I was satisfying my intense need to play it by watching tons of youtube videos. There was one guy who uploaded several playthroughs (a justin.tv logo watermark is in one of the corners) and he played a level that had this crazy vehicle that would climb over anything, and even stick to walls, hanging upside-down. The wheels weren't so much circular as they were galaxy shaped. By this, I mean that the wheel was basically comprised of several thin curved rubber legs (probably about eight) that would almost dig at the ground when it rolled forward. The rubber friction in LBP is exagerrated from the way it would act in real life, so this let it actually climb things. The material it was climbing on was probably relevant, too, and from what I remember, it was all dissolve material. But I imagine using a sponge or polystyrene material would work just as well. If you still don't have a clear image of what the wheels look like, do a google image search for "spiral galaxy" and you'll get an idea of what I'm talking about. Or just try to find that video.

2008-11-20 00:45:00 Author: Justin Hopewell Posts: 135

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