Handbrake fail!

Hi guys,

first of all good job, i hope that we can help you to gain attention and become the new ultimate in game physx engine, and please develope a GPU enviroment!

This is the first bug that i found and i think is slightly different from previous reported bugs regarding handbrake!

So it happens when you proceed on squared road bumps, if you pull hand brake at certain velocity the car will immediately stuck on tires and tear off the frame instead of a normal progressive drag.

Here is s still!

Hope it helps!

 

I can verify this too, It's happened to me several times, but more often with the front brakes.

 

Hitting the Emergency brake and going up a straight 90 angle about half the size of a side walk curb is going to damage your vehicle.
You aren't just going to drive through it without any consequences. It may seem a little dramatic, but depending no the speed it could be about right.

A tire in complete stop going over a squared object with zero movement is going to stick. You have the tire base, the rim and everything else. Plus all that
Weight in the front of the vehicle for your front braking with damage. The rear is just the same.

 

this is well known, I've even reported this also. don't worry this is common

 

ummm, have you by any chance given the thought that maybe, thats what would happen in REAL LIFE, also, this doesn't use nvidia physx AT ALL, its all a custom made/scripted/coded soft-body physics engine

 

Ok. Everyone calm down. First of all, in real life, you wouldn't tear the rear axle of the back if you did this. You'd just probably damage your wheels pretty good. Second of all, you misread his post. He said he hopes beamng can become "the next nvidia".

 

Calm down killa! no need to caps and yell like that...on topic, I have seen this too, and def IRL if u lock the wheels up and skid over a curb, its pretty dramatic, I know from experience lol

 

Hey guise, why the five month bump? Was this necessary?

 

I don't think bumping this was such a big deal...? who cares

 

I had to find a work around to avoid this happening when I made my map. If you make two boxes and put them perfectly side by side, drove over the join and yanked the brakes on you will get hooked. This is the same thing that's happening to you, but the square edge in your case is slightly raised.
As this is how my entire map is made I needed a solution. It is indeed the fact the the vertical surface is acting like a brick wall. I added a small 45 degree bevel at the edge of each joining object and you can yank the brakes on until the cows come home.


Yes it puts an ugly rut across your nice seamless road/object but I guess its better than having your wheels rudely wrenched from beneath you when you least expect it.


Its almost like it puts an extra extended edge to the vertical face when ever your wheel is skidding over it. (slightly exaggerated pic to show you what I mean)

I don't know how far off vertical the face has to be to avoid this, but for my application the 45 degree bevel did the trick. It would be interesting to see if it would happen on a 89 degree vertical face.

 

Uhh, no, that is what would happen in real life, unless you go under 2 mph, any faster and what happens to the op would happen to you (ive seen it happen before many many times even at 3 mph)

Sent from my SAMSUNG-SGH-I747 using Tapatalk

 

Not in the way he's having the problem. There is essentially no gap nor is there any height difference between them. What is there to snag on?

 

It probably has something to do with the nodes in the tires getting hooked on the join between the two blocks and getting stuck there. I dont know if there is any way to fix it because I havent made any maps before.

 

Are you serious?
No way that's ever going to happen. The rubber that a tire is made of would not be able to hold up and bring the car to a dead stop from over 60 mph in 2 metres. Even if it would hook on the rim, that's not what would happen.

Watch this video: (skip to 1:50) They tied a steel cable to the rear axle, trying to yank it out of the car.


They used a steel cable and cut through half of the rear suspension, and still it didn't even yank the rear axle out of the car, the cable broke. And that steel cable holds up for a lot more than a rubber tire. Even if the rear axle would be yanked out, it would not deform the pickup bed anywhere near as much as it did for the OP, it would probably rip pretty clean out.

 

i never said the condition of the car's i saw it happen to

 

You said what the picture the guy posted was accurate. If you have seen it happen in real life and it wasn't like the picture, then why would you say the picture is accurate?

 

well, for all we know, it might not have been a brand new d15 he was using, he could have been beating it up before he decided to drive that fast on those bumps, so yeah

 

Press L or K until you get to the skeleton view for vehicles. Now take a look at the wheels. They're not perfectly circular as they're made of 12(most of the stock cars use this amount) pie slices that roll. Out of these pie slices the only parts of the skeleton that actually touch the ground are the nodes(points). It's because of that system that braking and hitting a sharp edge like a curb will catch the nodes causing what you see. It is both the upside and downside of beamng because it gives us the only engine that simulates actual wheels on a car instead of making it float like any other game does but on the other hand it results in behaviors such as this one.

 

WAIT, if you add more slices, and yes I know how, does it cut down on the size of the holes in the wheels when they shred?

 

It might, slightly, but the mesh is only visual and it won't make a difference to how the physics perform.