The "How do I..." Thread

[Dragon Mech]

how do I decrease player health with an item

"A_TAKEHEALTH ()" should do the trick. but i've never tried something like this. best of luck though .

[Blue Shadow]

How can I increase Jump Height through pickups?

I think this one requires ACS; again, you set up a CustomInventory item that calls an ACS script through [wiki]ACS_NamedExecuteAlways[/wiki] on pickup. By using [wiki]GetActorProperty[/wiki] and [wiki]SetActorProperty[/wiki] with APROP_JumpZ, you can get the current jumpZ of the player and increase it.

If you don't know anything about ACS, [wiki=ACS]then you better start doing some research[/wiki].

how do I decrease player health with an item

"A_TAKEHEALTH ()" should do the trick. but i've never tried something like this. best of luck though .

There is no "A_TakeHealth", but there are, however, [wiki]A_SetHealth[/wiki] and [wiki]A_DamageSelf[/wiki].

[idGamer]

How can I have a teleport destination that lowers with a platform (in Zdoom HeXen format)? I tried using all of the different destinations in Doom Builder, but none of them worked.

EDIT: Nevermind, I think I found a workaround.

[Toberone]

Strange question but when I look into the doom 2 IWAD all the sounds alternate between doom format and PC speaker sound format for whatever reason. The PC speaker format sounds incredibly strange.

However when I start up GZDoom everything's fine, is this just some oddity with Slade? I'm using 3.1.0.0. If not, how can I change these sounds back to doom format without editing the actual IWAD? I'm kind of concerned.

[D2JK]

The GLDEFS page states:

"SPRITENAME: The first few characters of the sprite name. This can be either a sprite name (four characters) or a frame name (five characters). For example, "MISL" will bind the light to all frames (used by that object) using a "MISL" sprite; whereas "MISLA" will bind the light specifically to the "MISLA" frame."

Are there any known but undocumented exceptions to this rule, because I was just trying to bind a light emitting effect to a monster, but it wouldn't work until I manually bound the light to each animation frame. To clarify, "MISL" wouldn't work at all, so it was necessary to bind the light to "MISLA", "MISLB", "MISLC", and so on.

Usually I have no problems with binding lights to objects, but I couldn't figure out what's the difference here.

[notjustinbailey]

How can I increase Jump Height through pickups?

I think this one requires ACS; again, you set up a CustomInventory item that calls an ACS script through [wiki]ACS_NamedExecuteAlways[/wiki] on pickup. By using [wiki]GetActorProperty[/wiki] and [wiki]SetActorProperty[/wiki] with APROP_JumpZ, you can get the current jumpZ of the player and increase it.

If you don't know anything about ACS, [wiki=ACS]then you better start doing some research[/wiki].

I'm sorry, I have been looking through pages, but it's still not clear to me on how to add to a stat.
This is what I thought would work:

Code: Select all

#include "zcommon.acs"

script "JumpBoostSmall" (void)
{
SetActorProperty(0, APROP_JumpZ, GetActorProperty(0, APROP_JumpZ)+5000);
}

What should I replace that with?

[Ed the Bat]

5000 is roughly equal to 0.076, meaning you're not going to see much of a gain. See here for why. The short answer, though, is to just use 5000.0, and you'd see the change.

[cortlong50]

how would i make it so you have to press use to pick up objects?

[Dragon Mech]

There is no "A_TakeHealth", but there are, however, A_SetHealth and A_DamageSelf.

my bad. thanks for the correction.

[notjustinbailey]

I'm trying to make random monster spawns, but I'm getting this error:

Code: Select all

Script error, "Powerups.pk3:decorate/monsterspawns.dec" line 1:
Parent type 'CustomMonsterInvasionSpot' not found in WeakGroundSpawner

Here is my DECORATE code:

Code: Select all

ACTOR WeakGroundSpawner : CustomMonsterInvasionSpot 200
{
DropItem "Zombieman2"
DropItem "ShotgunGuy"
DropItem "Chaingunner"
DropItem "DoomImp"
}

[phantombeta]

I believe CustomMonsterInvasionSpot is Zandronum only.
Change that to "RandomSpawner"

[notjustinbailey]

I believe CustomMonsterInvasionSpot is Zandronum only.
Change that to "RandomSpawner"

I tried that and messed around with it but can't seem to get it to spawn monsters more than once.

[Blue Shadow]

Each random spawner spawns one thing; that's how it works.

[Rowsol]

I can't get *usefail in the player sndinfo to play a random sound. Is that not a thing? I can put it under any of the *pain and it works fine.

Ahh, okay, it has to be playeralias, not playersound.

[kodi]

I want to use a flat plane 3d model as a railgun particle. How do I make that actor set it's Pitch to that of it's target( the player) in it's spawn state?

I'll be using the INHERITACTORPITCH modeldefs flag with this.