You can use the DIRP method and have something else spawn the random spawner. Like this:
Actor ActualBaseSpawner
{
Height 1
Radius 1
Scale 2.5
states
{
Spawn:
TNT1 A 1
TNT1 A 0 A_JumpIf(ACS_ExecuteWithResult(975,0)==2,"Death")
TNT1 A 0 A_JumpIf(ACS_ExecuteWithResult(696,0)==1,"AllWeps")
TNT1 A 0 A_SpawnItemEx("BaseSpawner",0,0,0,0,0,0,0)
stop
Death:
TNT1 A 0
stop
AllWeps:
TNT1 A 1
TNT1 A 0 A_SpawnItemEx("AllBaseSpawner",0,0,0,0,0,0,0)
stop
}
}
actor BaseSpawner : RandomSpawner
{
//spawn stuff here
}
actor DangerWrapSpawn : ActualBaseSpawner 10085 {} //10085 is the doomed number of the actor you want to replace.
(http://img833.imageshack.us/img833/9655/screenshotdoom201302192.png)
Victory.
actor SakugarnePickup 10075
{
States
{
Spawn:
TNT1 A 0
TNT1 A 0 A_JumpIf(ACS_ExecuteWithResult(302,0)==1,"No")
TNT1 A 0 A_SpawnItem("SakugarneMarker",0,0)
TNT1 A 0 A_SpawnItem("SakugarneSpawn",0,0)
No:
TNT1 A 1
stop
}
}
actor SakugarneMarker : MapMarker
{
Scale .8
States
{
Spawn:
WMA2 Z -1
Stop
}
}
actor SakugarneSpawn : RandomSpawner
{
DropItem "SakugarneGiver" 255 1
}