Classes:InterpolationPoint

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Interpolation point
Actor type	Script thing	Game
DoomEd Number	9070	Class Name	InterpolationPoint

Classes: InterpolationPoint

Interpolation points define a path to follow. They operate similarly to the patrol points of a monster patrol route. They take five parameters:

1. pitch: pitch of camera in degrees, 0 is straight ahead, 1-89 is down, and 166-255 is up (angle subtracted from 256).

2. time: time (in octics) to travel to next node.

3. pause: time (in octics) to stop at this node before continuing

4. low byte: low byte of tid of next interpolation point in the path.

5. high byte: high byte of tid of next interpolation point in the path.

Parameter 4 has the low byte, and parameter 5 has the high byte, so the tid is parm4+(parm5*256). This lets you use more than 255 points for all paths. For example, if the next point had a tid of 4 then the low byte is 4 and the high byte is 0. But if the next point has a tid of 3027, the low byte is 211 and the high byte is 11 (11×256 + 211 = 3027).

Since an interpolation point needs parameters to work, it cannot have a thing special. To have a thing special executed when an interpolation point is used by one of the moving objects (ActorMover, MovingCamera or PathFollower), you need to create a an interpolation special with the same TID as the interpolation point.

DECORATE definition

ACTOR InterpolationPoint 9070 native
{
  +NOBLOCKMAP
  +NOGRAVITY
  +DONTSPLASH
  RenderStyle None
}