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Deploying,Geting right rotation?

by kc_0045 · in Torque Game Engine · 02/14/2004 (12:12 pm) · 4 replies

Hello, im adding deployables to my game but im having some problems :(. heres the code im useing to get the pos your looking at.
%pos = %obj.getMuzzlePoint(%slot);
%vec = %obj.getMuzzleVector(%slot);
%res = containerRayCast(%pos,vectorAdd(%pos,vectorScale(%vec,2000)), $TypeMasks::PlayerObjectType | $TypeMasks::TerrainObjectType | $TypeMasks::InteriorObjectType | $TypeMasks::StaticObjectType,%obj);
if (%res)
   %hitLoc = getWords(%res,1,3);

now that works fine but i need it so you can deploy on to StaticShape with the right rotation....any one have any idea on how i choud do this? any ideas? plz post.
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Torque Owner Gonzo T. Clown
#1
02/14/2004 (8:48 pm)
Well, it would depend on what is the "right rotation". Assuming you want it to face the direction you are facing, why not get your own rotation and apply it to the deployed object?

Torque Owner kc_0045
#2
02/14/2004 (8:52 pm)
No no no i mean like if your looking at say a flat wall thats its angle is 90Degres and you want the object to deploy so the bottom is facing that wall how whoud you do that?

Torque Owner Gonzo T. Clown
#3
02/15/2004 (4:02 am)
Well, thats a little tougher obviously. First off, you'll need to make sure your object deploys it's negative Z axis in the direction you are facing. And you'll have to do a force on the angle. Meaning, you may be looking up at a 45 degree angle, but where your raycast strikes the wall, the deploy will occur at a direct 90 degree's. Keep in mind this could confuse the issue if you are trying to deploy on angled surfaces. For flat and straight up and down, it shouldn't be a problem.

Torque Owner kc_0045
#4
09/09/2006 (10:39 pm)
Well, iv started this project up again now that iv got a better knowledge as to how TGE works, didnt take me long to solve the problem i had before.

Now my problem is this, my normal to rotation function seems to be 2d only, one axis just stays flat and is causing problems.

%ray   = ContainerRayCast (%startPoint, %endPoint,   $DeployableMask, %obj);
%hitobj = getword(%ray,0);
%Surfnorm = getWord(%ray, 4) SPC getWord(%ray, 5) SPC getWord(%ray, 6);
%Surfpos = getWord(%ray, 1) SPC getWord(%ray, 2) SPC getWord(%ray, 3);
%Surfrotation = Normal2Rotation(%Surfnorm); 




function Normal2Rotation(%normal)
{
   if(getWord(%normal, 2) == 1 || getWord(%normal, 2) == -1)
      %rotAxis = vectorNormalize(vectorCross(%normal, "0 1 0"));
   else
      %rotAxis = vectorNormalize(vectorCross(%normal, "0 0 1"));

   %initialAngle = mACos(vectorDot(%normal, "0 0 1"));
   %rotation = %rotAxis SPC (%initialAngle);

   return %rotation;
}

a freind suggested I use "Euler type matricies with matrix/vector multiplication" iv tryed searching that, but I cant seem to find anything usfull :S

http://img171.imageshack.us/my.php?image=screenshot00100002vb6.jpg

The bottom 2 poles by the gun is what I'm talking about.