Trails

[SupremeBioVizier]

Last night I tried to write script for decorate lump on the hopes, where ever the player moves an image of the player sprite remains... didn't work. Anyone know if this can be done using decorate? I'm trying not to use acs script.

[ViolentBeetle]

There might be a better way, but you can probably create a thing that uses player sprites and spawn them in his wake.

[SupremeBioVizier]

actor PlayerTrail : Actor 75675
{
    Height 16
    Radius 16
    +NOGRAVITY
    States
    {
    Spawn:
        TRAI A 1
        TRAI B 1
        TRAI C 1
        Stop
    }
}

actor PlayerTrailSpawner : Actor
{
    States
    {
    Spawn:
        TNT1 A 0 A_SpawnItemEx("PlayerTrail", 0, 0, 0, 0, 0, 0, 0, SXF_SETMASTER)
        Loop
    }
}
 

it says error while parsing....it shows up on inventory at least

[Desfar]

Can you copy paste the error?
Best guess I have is that there is a space spawning error of some sort.

Possibly adding +NOBLOCKMAP might help, as well as adding the NoCheckPosition to it.

("PlayerTrail", 0, 0, 0, 0, 0, 0, 0, SXF_SETMASTER | SXF_NOCHECKPOSITION)

Edited December 27, 2023 by Desfar

[jaeden]

I would just add that you probably don't want a 0-tic duration loop, or you get some game freeze/crash.

[SupremeBioVizier]

actor PlayerTrail : Actor 3505
{
    Height 16
    Radius 16
    +NOGRAVITY
    +NOBLOCKMAP
    States
    {
    Spawn:
        TRAI A 1
        TRAI B 1
        TRAI C 1
        Stop
    }
}

actor PlayerTrailSpawner : Actor
{
    States
    {
    Spawn:
        TNT1 A -1 A_SpawnItemEx("PlayerTrail", -16, 0, 8, 0, 0, 0, 0, SXF_SETMASTER|SXF_TRANSFERPOINTERS)
    }
}

 

^ exactly whats in the decorate now, it passed the parsing and shows up in the things decorate folder in slade

///////////////////////////

would I need to define the sprite in this decorate as well?

(what goes here)

{
    TRAI A 0
    {
        Offset 0, 0
        Patch TRAILA, 0, 0
    }
    TRAI B 0
    {
        Offset 0, 0
        Patch TRAILB, 0, 0
    }
    TRAI C 0
    {
        Offset 0, 0
        Patch TRAILC, 0, 0
    }
}
/////////////

sprite does not show when I turn around, should there just be one png titled traia0?

Edited December 28, 2023 by SupremeBioVizier

[Desfar]

Would you mind posting a small wad sample I can tinker with?

[SupremeBioVizier]

3 hours ago, Desfar said:

Would you mind posting a small wad sample I can tinker with?

https://www.mediafire.com/file/xdjg3bbzqkhou8x/F-ZEROBETA.wad/file

here is a ruff draft of the idea I want to work on....I thought it would be cool for the cars or at least, player1 for nows hud car to leave trails behind so when you look back, there's just fading ghost images of the player

[Desfar]

FOUND IT!

while you made the spawner, you never set the player to generate the item.

 

ACTOR FastDoomPlayer : DoomPlayer
{
  Player.ForwardMove 3.2, 3.2  // Increase forward movement speed
  Player.SideMove 4.2, 4.2  // Increase sidestep speed
  
  States
  {
  Spawn:
    PLAY A -1
    Loop
  See:
    PLAY ABCD 1 A_SpawnItemEx("PlayerTrail", -16, 0, 8, 0, 0, 0, 0, SXF_SETMASTER|SXF_TRANSFERPOINTERS)
    Loop

  }
}

This will require finetuning, but this will make it so the player is spawning a trail MOB every tic.
Transparency for the trail will also be a must. 
The wad blew my mind when i cracked it open love the work!

Edited December 28, 2023 by Desfar

[Desfar]

Also, i would consider making it so the spawner isnt a -1

 

such as

actor PlayerTrailSpawner : Actor
{
    States
    {
    Spawn:
        TNT1 A 1 A_SpawnItemEx("PlayerTrail", -16, 0, 8, 0, 0, 0, 0, SXF_SETMASTER|SXF_TRANSFERPOINTERS)
    }
}

[SupremeBioVizier]

18 hours ago, Desfar said:

 

it is still not showing. I tried changing a few things but nothing worked, so this is how the script was + now with the player spawner you made

//////////////////////////

actor PlayerTrail : Actor 3505
{
    Height 16
    Radius 16
    +NOGRAVITY
    +NOBLOCKMAP
    States
    {
    Spawn:
        TRAI A 1
        TRAI B 1
        TRAI C 1
        Stop
    }
}

actor PlayerTrailSpawner : Actor
{
    States
    {
    Spawn:
        TNT1 A 1 A_SpawnItemEx("PlayerTrail", -16, 0, 8, 0, 0, 0, 0, SXF_SETMASTER|SXF_TRANSFERPOINTERS)
    }
}

ACTOR FastDoomPlayer : DoomPlayer
{
  Player.ForwardMove 3.2, 3.2  // Increase forward movement speed
  Player.SideMove 4.2, 4.2  // Increase sidestep speed
  
  States
  {
  Spawn:
    PLAY A -1
    Loop
  See:
    PLAY ABCD 1 A_SpawnItemEx("PlayerTrail", -16, 0, 8, 0, 0, 0, 0, SXF_SETMASTER|SXF_TRANSFERPOINTERS)
    Loop

  }
}

[Desfar]

So what i did for my test was to make the player trail loop, and i believe the WAD doesnt have TRAI B or TRAI C.
Slap those in, and set it to loop as a test.

[SupremeBioVizier]

OKAY i got it to show but its just an image where the decorate is placed

[Desfar]

Sent a DM for deets. I'm gonna help you get this effect sorted!