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Snap to Path

by Larry Jennings II · in General Discussion · 04/06/2011 (6:54 am) · 1 replies

I have a scene object i am attaching to a path through the code. I would like to know if their are any shortcut methods on how to snap that node to the path, based on where its at.

I know you can reset to the start but i dont want that, i want it to snap to the nearest point on the path.

Any Ideas? or am i just gonna have to do it the hard way and test the signed distances and whatnot?

Edit: Also, how do you get a path node's position? I'm not seeing anything on the reference page.
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Torque 3D Owner Kage
#1
04/07/2011 (12:53 pm)
I don't know how proficient you are with programming, but here is a sample method you can use. Most references used below can be found in scripts\server\aiPlayer.cs.

%path =  "MissionGroup/Paths/Path1";

   if ( isObject( %path ) )
   {
      %myobjpos = %myobj.getPosition(); /* <-- assume your object name  is myobj */
      %closestnode = %path.getObject( 0 );
      %closestdist = VectorDist( %myobjpos, %closestnode.getPosition() );

      /* iterate thru all nodes in the path to find the closest one */
      for (i = 1; i < %path.getCount(); ++i )
      {
         %node = %path.getObject( i );
         %dist = VectorDist( %node.getPosition(), %myobjpos );
         if ( %dist < %closestdist )
         {
            %closestnode = %node;
            %closestdist = %dist;
         }
      }

      /* closest node found - at this point, you can query the node for its transformation or position; if you don't care about its rotation then just get the position */
      %myobj.setTranform( %closestnode.getTransform() );

   }
   else
      echo( "no path found" );

gl.