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Rope Bridge Which Constraints???
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 Re: Rope Bridge Which Constraints???
Posted by Baf2099 on Wed Jan 5th at 4:32pm 2005

I have been trying to create a rope bridge and have run into some big problems. as you know making the rope using the keyframe and mov_rope entitys only is a visual thing but to actually have a rope with a length there needs to be some kind of constraint. what i want to know is, is it possible to connect mulitple planks in order to create this and what is truly the appropriate constraint to use. the phys_lengthconstraint or the Phys_pulleyconstriant or something totally different?



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 Re: Rope Bridge Which Constraints???
Posted by Rof on Wed Jan 5th at 4:48pm 2005

Probably phys_lengthconstraint is what you want. That's closest to a rope in behaviour.
Pulleyconstraint is for simulating something like a rope over a pulley, where you want to tie two objects so that as one goes down, the other goes up.

You might also try phys_spring for a more flexible effect, though it may stretch too much.

If you have a whole bunch of constraints acting on the same object(s), you should put them all in the same constraint system, otherwise the whole thing will vibrate randomly. Make a phys_constraintsystem entity, give it a name, and make sure that that name appears under the constraintsystem field of each phys_ entity.




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 Re: Rope Bridge Which Constraints???
Posted by aonomus on Thu Jan 6th at 12:02am 2005

Its quite easy, just make multiple func_physbox's textured appropriately, with appropriate settings, connect them together with phys_hinge's. You only need phys_lengthconstraint's on the ends, very simple, I have one in my map for a coming mod. One problem will be that you can get stuck on physbox's, but this seems to be a collision problem rather than a problem with the way it was set up.





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