ZDoom

[quote="TXTX"]Also i edited the code a bit to keep up with the actor's unique scales for my mod. Should help if you need it.

[code]A_SetScale((random(0,1)*2-1)*ScaleX, ScaleY)[/code][/quote]

I'm sure that it will. Thank you.

I've opened a bug report. Since this flag is otherwise unneeded this thread can be closed.

VILE Y 0
VILE Z 0
VILE [ 0
VILE \ 0
VILE ] 0

A_SetScale((random(0,1)*2-1)*ScaleX, ScaleY)

I have used sprite mirroring the original way but with some actors having a lot of sprites I was looking for another method.

By not having enough room I mean like the archvile's sprites where he goes all the way to a-z and then to slashes with the fifth letter.

[code]
VILE Y 0
VILE Z 0
VILE [ 0
VILE \ 0
VILE ] 0
[/code]

Isn't the sprite letter limit from a-z and "[\]"?

Seems the only way to add mirrored deaths for actors with a lot of sprites is to duplicate and rename them for full compatibility if i'm not mistaken.

[quote="Enjay"]FWiW, the reason I wasn't using negative scaling and was using the sprite naming instead was mainly because I was already applying random scale factors to my own enemies in their spawn state to randomise the size of the enemies slightly.[/quote]

Also i edited the code a bit to keep up with the actor's unique scales for my mod. Should help if you need it.

[code]A_SetScale((random(0,1)*2-1)*ScaleX, ScaleY)[/code]

FWiW, the reason I wasn't using negative scaling and was using the sprite naming instead was mainly because I was already applying random scale factors to my own enemies in their spawn state to randomise the size of the enemies slightly.

However, I hope that -ve scaling is allowed because I've been using that on special effects like smoke clouds and so on.

As far as I know the sprite naming version should work even in vanilla (although I'm not sure how you'd get it to randomly pick a death state). If you look at the sprite naming for the hell knight, arachnotron and spiderdemon they basically do this for some of their frames.

Best to ask Randi if negative scale is officially supported or not and the fact that it only works in OpenGL is a bug or not. Could be a legit feature that somehow managed to not work due to an oversight in the software renderer (it's happened before - if I remember correctly - with regards to texture mirroring; they were reported by MaxEd IIRC)

You shouldn't use that method, because it only works in GL, and screws regular ZDoom users over. Use the original way suggested by Enjay.

Wow this works! :shock:

Never thought of negative scaling. Impressive!

I'm interested to know if this trick is actually "legally"supported by the OpenGL renderer and is not some kind of an undefined behavior.

[quote="Blzut3"]Interesting. I'm getting invisible actors when I set the scale negative. Didn't think too much about it since the wiki claims only positive values are legal for the xscale property.[/quote]
I... don't know what to tell ya. Calling A_SetScale(-xscale,yscale) produces a horizontally-flipped duplicate of what my actor would normally look like.
EDIT: I figured it out! This negative scale trick only works in GL mode. Software doesn't allow it.

Interesting. I'm getting invisible actors when I set the scale negative. Didn't think too much about it since the wiki claims only positive values are legal for the xscale property.

[quote="Blzut3"]If only negative scales worked?[/quote]
They do. That's how I randomly flip actor's sprites.

Death:
  "####" "#" 0 A_SetScale(random(0,1)*2-1, 1)
  goto Super::Death

Simpler version:
[code]Death:
"####" "#" 0 A_SetScale(random(0,1)*2-1, 1)
goto Super::Death[/code]
If only negative scales worked?

And yet, the only thing I see here is the missed opportunity that someone should have named their example actor "Flimp." =P

actor FlipImp : DoomImp replaces DoomImp
{
 states
 {
  Death:
    TROO I 0 A_Jump(128,"Flippity")
	goto Super::Death
  Flippity:
    TROO I 0 A_SetScale(-1.0,1.0)
	goto Super::Death
  Raise:
    TROO I 0 A_SetScale(1.0,1.0)
	goto Super::Raise
 }
}

[quote="Ed the Bat"]A_SetScale(-scalex,scaley) should mirror it. Maybe use that with a Jump to randomize it.[/quote]
Just make sure you revert it during the Raise state (if applicable) otherwise things start to look weird. ;)

basically, do something like this
[code]actor FlipImp : DoomImp replaces DoomImp
{
states
{
Death:
TROO I 0 A_Jump(128,"Flippity")
goto Super::Death
Flippity:
TROO I 0 A_SetScale(-1.0,1.0)
goto Super::Death
Raise:
TROO I 0 A_SetScale(1.0,1.0)
goto Super::Raise
}
}[/code]

A_SetScale(-scalex,scaley) should mirror it. Maybe use that with a Jump to randomize it.