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Flying vehicle confusion?

by Gonzo T. Clown · in Torque Game Engine · 08/30/2004 (7:26 am) · 6 replies

Has anybody YET got a flying vehicle to hover at the createHoverHeight or hoverHeight settings?


I'm so sick of trying to figure out why no matter what I set my settings at my vehicle flops around on the ground like a fish out of water.


I inserted this line into the FlyingVehicle::updateForces() function....

Con::printf("Height is: %d for vehicle\n", h);

just behind this line....

F32 h = getHeight();

and all I get from it is jibberish like...

Height is: 1288490189 for vehicle
Height is: -1503238554 for vehicle
Height is: -1073741824 for vehicle
Height is: 0 for vehicle
Height is: 429496730 for vehicle
Height is: -2147483648 for vehicle
Height is: -858993459 for vehicle
Height is: -429496730 for vehicle
Height is: 0 for vehicle
Height is: -1288490189 for vehicle
Height is: -2147483648 for vehicle


etc... etc... And thats all from the same log in just a few seconds. Obviously the vehicle is not moving up and down that fast and this function here is just plain screwed for some reason.

F32 FlyingVehicle::getHeight()
{
   Point3F sp,ep;
   RayInfo collision;
   F32 height = (createHeightOn) ? mDataBlock->createHoverHeight : mDataBlock->hoverHeight;
   F32 r = 10 + height;
   getTransform().getColumn(3, &sp);
   ep.x = sp.x;
   ep.y = sp.y;
   ep.z = sp.z - r;
   disableCollision();
   if (!mContainer->castRay(sp,ep,0,&collision))
      collision.t = 1;
   enableCollision();
   return (r * collision.t - height) / 10;
}


Please for the love of god can anyone fix this thing once and for all or tell me what I am doing wrong?
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Torque Owner Bruno Grieco
#1
08/30/2004 (2:37 pm)
This sounds like some bad data coming from the Datablock. I would suggest monitoring the height variable in getHeight().

Associate Craig Fortune
#2
08/30/2004 (2:51 pm)
I seem to remember a while ago about something to do with the checks on what it should be hovering over.

For instance i *think* (really not sure here) there was some daft thing about it not checking to hover over terrain types or something.

I'm really not sure tho, but I do remember something along those lines.

Torque Owner Marcelo Oliveira
#3
08/30/2004 (3:09 pm)
Use a non-null collision mask at getHeight() function as in this snippet:

U32 mask = TerrainObjectType |           
              InteriorObjectType |                                 
              StaticShapeObjectType |       
              PlayerObjectType |                       
              VehicleObjectType;

   disableCollision();
   if (!mContainer->castRay(sp,ep,mask,&collision))
      collision.t = 1;

Torque Owner Gonzo T. Clown
#4
08/30/2004 (3:12 pm)
Height is: 840633019 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137625037 for vehicle

Height is: 840429792 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137625037 for vehicle

Height is: 840230644 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137625037 for vehicle

Height is: 840035477 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137625037 for vehicle

Height is: 839844210 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137625037 for vehicle

Height is: 839656777 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137624941 for vehicle

Height is: 1243908 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137624941 for vehicle

Height is: 6 for vehicle

getHeight is: 0 for vehicle

R is: 0 for vehicle

sp is: 1137624941 for vehicle

Torque 3D Owner Tom Bampton
#5
08/30/2004 (3:24 pm)
Quote:
Con::printf("Height is: %d for vehicle\n", h);

just behind this line....

F32 h = getHeight();

You mean the h = getHeight(); is first or the Con::printf() is first? If the printf is first, then the problem is that h is being set *after* its printed, so when its printed its just gibberish. It would certainly explain the large values you are seeing.

T.

Torque Owner Gonzo T. Clown
#6
08/30/2004 (8:20 pm)
// Hovering Jet
F32 vf = -sFlyingVehicleGravity * mRigid.mass * mGravityMod;
F32 h = getHeight();
Con::printf("Height is: %d for vehicle\n", h);