bridge taxiway over water

[dm1886]

Hello, I'm try to improve the airport of Macau VMMC, which use a bridge for taxiway over water.
for testing I have design a quick possible bridge in blender and import the object in FS2020 SDK.

my plan was place the 3dObject of the bridge and try to place the taxiway path on top... but.... (see the effect in the picture...)


Now I am facing 2 issue:
1- the plane goes through my object...
2- how can I position the taxiway path or line on top of my object? is this possible in the SDK?

any idea how can proceed to build a bridge with taxiway on top?

from the picture below some of my trial:

 

[superspud]

You can make a 3d model with a surface that a plane will land and taxi on.

You can't make one that you can build on or will be recognised by any other airport function. Things like taxiways, runways, painted lines and aprons will only go on official terrain.

You would have to terraform the water to raise it and hide it inside another structure, but this never works very well. The terraforming tools are very crude and the model will twitch from a distance as the LOD changes.

 

[dm1886]

Thanks for give me some guideline, so I'll probably go for the 3d model.
But when I try to place some 3d model of the taxiway in the scenery land or taxi on it my aircraft goes through the object.
look like there is not shape detection. how can i give to my model a a sort of shape so i can taxi or move on it?

on the following picture the plane pass through the model

i would like to build a similar taxiway like the one in the picture below.

are there any setting in blender or in the SDK i miss in order to allow my plane detect the surface of the 3d model taxiway ?

thanks...

 

[superspud]

A 3d model won't work for this. You must terraform the terrain underneath and put the model on top of it.

A taxiway or runway will only follow the terrain underneath and completely ignore the model.

 

[bertrand.demare@mysteryfx]

To create a real bridge . I used a 3D strcture in my VHHX scenery.
Add a "collision" directly in the material parameters

You could also create an invisible box with colision parameter.

You will have to draw a texture with taxiway line... and light because the terrain will be pushed down at the sea level

 

[Sasa]

on the following picture the plane pass through the model

You need to select "FakeTerrain" as material type for this to work:

 

[dm1886]

I found the solution using road material.. if i tried using collision material fs2020 but not detect any collision.. but for my taxiway should be enough.. let see..

 

[rhumbaflappy]

The Road is a tag technically, and it does seem to work. FakeTerrain is a material type, but doesn't seem to affect it at all. I thought double-sided might prevent fall-through but it does not. Fall-through can happen when you switch from a resting slew on an elevated 'road' to non-slew (or perhaps non-slew to slew) It seems to have something to do with the aircraft contact points. FakeTerrain is used to have the sim's lighting treat the object as terrain.

 

[Sasa]

You're right Dick. When doing some experimenting on this again yesterday again I found out that I remembered this incorrectly. FakeTerrain has nothing to do with a hard platform but also doesn't show exactly as surrounding terrain. Looks like there was a good intention to make this happen a long time back but it certainly doesn't look 100% like terrain and always stands out at certain daytimes.

Collision models on the other hand have the downside of a vertex limitation up to which they work. Not really a problem for a flat taxiway. It is however if you're working on something more complex (like me on ice shelves at the moment).