Basic Scene Building And Maintenance

First, before you try to build or modify a scene, realize that you have to have a programmer or wizard bit on the server. Then realize that you will need to borrow one of the player characters since I haven't gotten around to modifying the programmer hierarchy yet.

Building A Scene

The steps in building a scene are as follows

```
@create $g.scene_root named "SomeName"
```
. See also
```
@help @create
```
. Just leave the scene where it is (it will normally be created in your inventory).
If you forget which object number you created, use
```
@kids $g.scene_root
```
. If you want to see the objects in a scene, the command is
```
;$g:show_scene()
```
where is the object number of either some object in the scene or the scene root for that scene.
A scene root doesn't have any geometry associated with it. Its just used to let the client know reliably when to stop asking about objects when building the scene.
The simplest way to create geometries is to create instances of #242. That class has four useful properties

name
The object's name
location
Where the object is
position
local x,y,z coordinates
orientation
local rotation vector
url
the object's url
The command to set these properties is
```
  ;< ObjectNumber>:set(< name>,< value>)
```
where ObjectNumber is an object number (with the hash sign), name is a property name in quotes, and value is the new value. Please note that location and position are specified as lists with an opening curly bracket, a closing curly bracket, and seperated by commas.

An example

In this example, responses from the server will be intended two spaces.

@create #302 named "My Scene"
  You now have My Scene with object number #341 and parent Generic Scene Root 
  (#302).
@create #242 named "My Room"
  You now have My Room with object number #345 and parent Generic (#242).
;#345:set("location",#341)
  => #341 (My Scene)
;#345:set("url","http://caithness.cs.ndsu.nodak.edu/~vender/WRL/Cell/cellmembrane.wrl")
  => "http://caithness.cs.ndsu.nodak.edu/~vender/WRL/Cell/cellmembrane.wrl"
;$g:show_scene(#341)
  #341 (My Scene)
   #345 (My Room)
  => 0

Okay, at this point you have a fairly boring scene (just a cell membrane). So the next step is to create some things in the room as so

@create #242 named "Nucleus"
  You now have Nucleus with object number #346 and parent Generic (#242).
;#346:set("url","Cell/nuc.wrl");
  => "Cell/nuc.wrl"
;#346:set("location",#345);
  => #345 (My Room)
;#346:set("position",{10,0,0});
  => {10.0, 0.0, 0.0}

If you are watching the window, you should see the nucleus moving. Since this can get very tedious fast, there is an additional thing you can do.

;$g:clone(#346)
  => #347  (Nucleus)
;#347:set("name","Second nucleus")
  => "Second Nucleus"
;#347:set("position",{-10,0,0})
  => {-10.0, 0.0, 0.0}

$g:clone makes an exact replica of an existing object, up to the point of placing it in the same position.