PIECE: plate 11x32

For the avatar go up stairs we only need to define the elevation (TheY) for the adequate points. Like you can see in the code:

...
if (e.Key == Key.L  && avdead==0    ){
  if(TheX==1 && TheZ>=-3 && TheZ<=3)TheY=2.5;
   else if(TheX==2 && TheZ>=-3 && TheZ<=3)TheY=3.5;
   else if(TheX>=3 && TheZ>=-3 && TheZ<=3)TheY=4.5;
   else if(TheX>=3)  TheY=4.5;
   else TheY=1.5;
  transold=trans;
  TheXold=TheX;
  TheZold=TheZ; 
  TheX=TheX+1;
  trans = new Matrix3D(0.1,0,0,0,0,0.1,0,0,0,0,0.1,0,TheX ,TheY,TheZ,1); 
  Quaternion qt = new Quaternion(new Vector3D(1, 0, 0),90);
  Point3D pt = new Point3D(TheX   , TheY,TheZ);
  trans.RotateAt(qt,pt);
  qt = new Quaternion(new Vector3D(0, 1, 0),-90);
  trans.RotateAt(qt,pt);
  mtrans= new MatrixTransform3D(trans);
  ModelVisual3D mv3D = VP.Children[0] as ModelVisual3D;
  Model3DGroup  m3Dg = mv3D.Content as  Model3DGroup;
  m3Dg.Children[4].Transform= mtrans  ;
   
 }
 if (e.Key == Key.J  && avdead==0   ){
  if(TheX==3 && TheZ>=-3 && TheZ<=3)TheY=2.5;
   else if(TheX==4 && TheZ>=-3 && TheZ<=3)TheY=3.5;
   else if(TheX>=5 && TheZ>=-3 && TheZ<=3)TheY=4.5;
   else if(TheX>=5)  TheY=4.5;
   else TheY=1.5;
  transold=trans;
  TheXold=TheX;
...

We need to create some areas of collision to avoid the avatar to go to some places. We do it using the same old function: Collision

For the demo, create a folder having the name of the .ZIP file and download it - right-clicking the link - and unzip inside the folder :

If you like only to see the application running you don't need to do the above download. Only liberate the firewall and play this web3d application:

We are doing our tests at a: Notebook DELL Latitude D600 - Intel Pentium M755 2.0 GHZ - Memory: 512 MB - VideoCard ATI Radeon 9000 32MB DDR 4xAGP - Resolution 1400x1050 - Communication: ADSL 256 kbps (Download: 45 kBps, Upload: 14 kBps)

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