[Can't fix] [4.6.1]spawn randomspawner+immediate Thing_SetGoal

[Matt]

Working example attached.

Go to map01.

Expected: the demon replacing the imp moves counterclockwise along the pentagon.

Actual: the demon stays in idle state.

If you remove the randomspawner replacement, or replace the imp class with a monster directly, it will function as expected.

[Blue Shadow]

This could be an order problem; RandomSpawner does the spawning in PostBeginPlay() which is called after OPEN scripts. Try putting a small delay before calling Thing_SetGoal.

[Matt]

EDIT: This gives the desired result:

Code: Select all • Expand view

#include "zcommon.acs"
script 1 OPEN {
   HudMessageBold(s:"GOGOGO";HUDMSG_FADEOUT|HUDMSG_LOG,2,CR_ORANGE,0.5,0.25,3.0,1.0);
      SpawnSpot("Doomimp",50,230);
      delay(1);
      Thing_SetGoal(230,53,0,0);
}

but this does not:

Code: Select all • Expand view

#include "zcommon.acs"
script 1 OPEN {
   HudMessageBold(s:"GOGOGO";HUDMSG_FADEOUT|HUDMSG_LOG,2,CR_ORANGE,0.5,0.25,3.0,1.0);
      delay(1);
      SpawnSpot("Doomimp",50,230);
      Thing_SetGoal(230,53,0,0);
}

Given the comments I'm seeing in the BeginPlay versus PostBeginPlay in the RandomSpawner definition, this difference may be unavoidable.


I do wonder how many maps do something like this, though...



EDIT: i've attempted to move all the postbeginplay spawning/transferring stuff into this randomspawner's beginplay (and have its postbeginplay call actor.postbeginplay instead), and there's no difference.


EDIT: If i change that spawnspot to an imp with TID 230, the Thing_SetGoal with no delay works fine. Is it that the rest of the undelayed ACS script is being called before any spawned actor can call BeginPlay?

[NicoTheGoat]

This doesn't work because the actor is spawned in the RandomSpawner's PostBeginPlay method, which, due to being spawned after the ACS VM, isn't called until after the ACS VM is done ticking.
As Blue Shadow said, you'll have to delay the Thing_SetGoal call.

EDIT: i've attempted to move all the postbeginplay spawning/transferring stuff into this randomspawner's beginplay (and have its postbeginplay call actor.postbeginplay instead), and there's no difference.
EDIT: If i change that spawnspot to an imp with TID 230, the Thing_SetGoal with no delay works fine. Is it that the rest of the undelayed ACS script is being called before any spawned actor can call BeginPlay?

Moving the spawn to BeginPlay doesn't work because BeginPlay is called immediately after the actor is spawned, before its TID can be changed by ACS, so the RandomSpawner ends up spawning its actor with a TID of 0.

[Matt]

Thanks for the explanation!

Yeah this definitely seems unavoidable as a matter of some pretty deep game logic... I think this can be closed.