ZDoom

Ok, in that case it gets filed as 'not a bug'. The special case where a projectile needs to remain shootable after impact can easily be handled by setting the SHOOTABLE flag via code pointer again.

I did some searching, and found [url=http://forum.zdoom.org/viewtopic.php?f=7&t=33727]this[/url].

[url=http://zdoom.org/Changelog/7a8ccaa/files]This[/url] is the cause. Now the question is why was that change needed and is there anything we can do about it?

For reference: http://www.realm667.com/board/viewtopic.php?f=7&t=5928

Yeah, I should've investigated the code more carefully before posting the bug report; the projectile setup is indeed a weird one. To my defense, I went with the assumption that the weapon worked for the author when he/she wrote its code 4 or 5 years ago with whatever ZDoom version it was tested on back then. And now it doesn't work anymore.

Still, I'm curious as to why it worked back then and now it doesn't.


(I think you can close this bug report. I or someone else will have to find way to fix that code and submit an updated version of it to Realm667)

Are you sure it's Thing_Destroy and not rather the messy way your death state tries to assign a Tid?
That one's just 'ugh'...

Calling [wiki]Thing_Destroy[/wiki] from DECORATE doesn't appear to work (at least not with the case the I've got here) starting with ZDoom 2.7.0 onwards. 2.6.1 was the last official release this worked on.

In the linked file below, is a weapon that fires "sticky" projectiles with the primary fire key, and detonates said projectiles with the secondary fire key. The detonation code uses Thing_Destroy to do so. Here is the code:

[spoiler][code]
// --------------------------------------------------------------------------
//
// Bio Pipebomb Launcher, sprites from Xaser's p0wer_x.wad
//
// --------------------------------------------------------------------------

Actor BioPipebombLauncher : Weapon
{
Weapon.Kickback 100
Weapon.AmmoUse 1
Weapon.AmmoGive 12
Weapon.AmmoType "BioContainer"
Inventory.PickupMessage "Bio Pipebomb Launcher!"
Weapon.UpSound "Weapons/BioReady"
States
{
Spawn:
BPBL M -1
Loop
Ready:
BPBL ABCD 5 A_WeaponReady
Loop
Deselect:
BPBL A 1 A_Lower
Loop
Select:
BPBL A 1 A_Raise
Loop
Fire:
TNT1 A 0 A_GunFlash
TNT1 A 0 A_PlaySoundEx("Weapons/BioFire","Weapon")
BPBL E 7 A_FireCustomMissile("BioProj")
BPBL F 8
BPBL G 7
BPBL H 8
Goto Ready
Flash:
BPBL I 2 A_Light(2)
BPBL J 2
BPBL K 2
BPBL L 2
Stop
AltFire:
BPBL A 2 Thing_Destroy(2648) //Sets off projectiles.
BPBL B 2
BPBL C 2
BPBL D 2
Goto Ready
}
}

// --------------------------------------------------------------------------
//
// Bio Proj, sprites from Captain Toenail and Daniel's NeoDoom.wad
//
// --------------------------------------------------------------------------

Actor BioProj
{
Radius 5
Height 5
RenderStyle Translucent
Alpha .7
Decal "BioDecal"
Speed 30
DamageType Poison
Projectile
+Shootable //So alt fire works.
+DontSplash
+SeekerMissile //So A_Fire works.
+ForceRadiusDmg
+DontFall //Stops it from falling after sticking to targets.
States
{
Spawn:
BPBP ABC 3 Bright A_SpawnItemEx("BioPuff",0,0,0,0,0,0,0,128)
Loop
TNT1 A 0 A_Stop
TNT1 A 0 Thing_ChangeTID(0,2648)
BPBP AAABBBCCC 1 Bright A_Fire(35)
Goto Spawn+5
Death:
TNT1 A 0 A_JumpIf(tid == 2648,1)
Goto Spawn+3
TNT1 A 0 A_PlaySoundEx("Weapons/BioProj","Weapons")
TNT1 A 0 A_Explode(100,192)
TNT1 A 0 A_SpawnItemEx("BioPuff",0,0,0,0,0,0,0,128)
BPBP DEF 6 Bright
Stop
XDeath:
TNT1 A 0 A_Stop
Goto Spawn+4
}
}

// --------------------------------------------------------------------------
//
// Bio Puff, sprites from Raven Software
//
// --------------------------------------------------------------------------

Actor BioPuff
{
Radius 0
Height 0
+NoBlockMap
+NoGravity
+Randomize
+PuffOnActors
RenderStyle Translucent
Scale .5
Alpha .25
VSpeed 1
Mass 5
States
{
Spawn:
BPBP GHIJKLMIHG 2 Bright
Stop
}
}

// --------------------------------------------------------------------------
//
// Bio Pipebomb Launcher ammo, sprites from Daniel's ARSENAL.WAD
//
// --------------------------------------------------------------------------

Actor BioContainer : Ammo
{
Inventory.Amount 6
Inventory.MaxAmount 60
Ammo.BackpackAmount 12
Ammo.BackpackMaxAmount 120
Inventory.PickupMessage "Bio Container"
Inventory.Icon BIOCA0
States
{
Spawn:
BIOC A -1
Loop
}
}

Actor BioContainerHefty : BioContainer
{
Inventory.Amount 30
Inventory.PickupMessage "Bio Container Hefty"
States
{
Spawn:
BIOC B -1
Stop
}
}
[/code][/spoiler]
And here is the file: http://www.realm667.com/index.php/repository/armory-mainmenu-157/704-bio-pipebomb-launcher?catid=59%3Adoom-style (Before running it, you need to extract it first, as it's a pk3 inside a zip)