Editing Polyobject (section)

====[https://s3-eu-west-1.amazonaws.com/eternity/polyobj_doors.wad PolyObject Doors Demo]====
A demonstration of both swinging and sliding doors, mirrored and single. Plays on '''Doom 2''' / '''Map01'''. The map is linked to an [[ExtraData]] lump (via [[EMAPINFO]]).

It is recommended that you open the Demo WAD in a WAD manager program like '''SLADE3''' or '''XWE''' to read the '''ExtraData''' scripts together with provided comments. For example the first script explains how LineDefs are configured for a single swinging door:

<pre>
//=============================
//= BASIC SINGLE SWINGING DOOR
//===========================
linedef {
  recordnum = 1 // corresponds to a LineDef with action: 270, tag: 1
  
  special = PolyObj_StartLine // this defines the current LineDef as a
                              // starting point for the PolyObject
                
  args = { 1 }  // since this is a very basic PolyObj, it requires only one
                // argument (it's not to be confused with LineDef / Sector tag)
}

linedef {
  recordnum = 2 // corresponds to a LineDef with action: 270, tag: 2
  
  extflags = "use player repeat" // describes how the LineDef is activated
  
  special = PolyObj_DoorSwing
  args = { 1,20,64,160 } // swing the door with PolyId: 1, AngularSpeed: 20
                         // AngularDeistance 64 units (90 deg),
                         // Delay: 160 tics
}  (...)
</pre>