Classes:SkyViewpoint

From ZDoom Wiki

Skybox camera
Actor type	Map spot	Game
DoomEd Number	9080	Class Name	SkyViewpoint

Classes: SkyViewpoint

 →StackPoint
  →LowerStackLookOnly
  →UpperStackLookOnly

The sky viewpoint is used to make skyboxes, it acts as the camera into the skybox. If its TID is zero, it will replace the sky everywhere in the map. If its TID is not zero, then corresponding SkyPickers with the same TID must be placed in the sectors where the sky is to be replaced by the one in the skybox.

The sky viewpoint takes one argument: visibility. The visibility for a skybox is equal to one-fourth the value of the first argument, so if you give it a value of 32 the visibility in the skybox will be 8.

DECORATE definition

ACTOR SkyViewpoint 9080 native
{
  +NOSECTOR
  +NOBLOCKMAP
  +NOGRAVITY
  +DONTSPLASH
}