Changing/making physics?

[f13rce]

Hey lads,

 

Since a few days ago I am having some weird collision problems.

I am using a controller, and each time I walk e.g. on stairs it blows me away.

I think this has to do with the physics.

 

I was using the MilkShape GMF exporter to export the map and I let LE made the physics for me.

 

So my question is: Can I edit the physics?

If so, how? And if not, how can I fix that 'blowing away'?

 

- Ivar/Evayr

 

PS: Could you explain it as clear as possible?

(PPS: There should be a questions board/forum section imo.)

[Marleys Ghost]

General programming? 3D modelling?

[cassius]

I don't understand the term "blows me away". What actuallu happens.?

I have weird collisions problems. In my case collisions with controller occur but don't look natural.

[wh1sp3r]

blows me away: like, he flew away, lol

[Marleys Ghost]

blows me away: like, he flew away, lol

 

 

Ah ... not "blows me away" as in "impressed" then

[Pixel Perfect]

I have had lots of problems with this in the past and anyone who gets to the point of pushing the physics in Newton will do so. In your case it might just require a better physics hull but essentially small physics shapes seem to allow the controller to penetrate them and Newton then produces a massive opposite force which sends you flying off. You can try swept collision which certainly helps but is a lot slower. If you don't have much going on you can get away with this.

 

ref: Swept Collision

[Josh]

The only time I have seen this occur is when a really detailed collision shape was used with lots of small triangles, and it was a situation that should not have been allowed to happen.

[Niosop]

I was having this problem just using a player controller on the Desert and Arctic example maps. As soon as I added the player controller it would go shooting off in some direction. When I made my own terrain it stopped happening.

[cassius]

Pixel Perfect has described my problem better than I could.

[f13rce]

The only time I have seen this occur is when a really detailed collision shape was used with lots of small triangles,

 

^True.

 

And that 'blowing away' is that it warps/moves me to other spots very fast ignoring the other physics around it..

I'll upload a vid soon as soon as I get from Zigiz.

[TylerH]

This occurs in the tunnel underground map just like it used to, if you jump onto the corner at the junction of two tunnels it will shoot you to the other end, like back in 2.23. Josh fixed it before, but seems it is back...

 

Could be a Julio thing?

[Josh]

No, because I wrote the controller implementation. Maybe I can cap the max force that can be applied.

[Pixel Perfect]

Maybe I can cap the max force that can be applied.

Or better still, allow us to set it

[f13rce]

I still don't have an answer how to fix that... =/

[Josh]

If you want help, you need to post your files.

 

I examined this issue in the tunnels map. At first I tried capping the max force, but then I noticed the geometry had some one-sided triangles in the corners. This was what caused the controller to get thrown sideways when pushing around the corner. I uploaded a fixed .phy file.

 

It is interesting that another problem we had early on was also due to bad geometry, and the controller was working correctly. This was caused when the player was unable to go up a step, and I looked and found the step was sloped. You can read about it in the old forum.

[Jardar]

Is there possibly some way of opening .phy files in a 3d modeling program, so we can review the shapes, save as obj and re-convert into new and revised .phy files?

 

edit: for the automatically created phy files I mean.