Randomize weapon firing states/muzzle flashes

[superscrungus]

What it says on the tin. Is there a way to code a weapon actor so that it plays randomly-selected animations during it's firing state? Or at least achieve similar randomization with muzzle flash sprites?

[Cherno]

I guess it could be done via GetSpriteIndex, like this:

Code: Select all

Fire:
MGUN A 2
{
     if(random(0,1) == 0)
     {
           sprite = GetSpriteIndex("MGUNB");
     }
}
//...

Dummy://always pre-load all possible sprites that could get used with GetSpriteIndex in a dummy state, otherwise bad things will happen!
MGUN A 0;
MGUN B 0;

[Dr. Van Nostrand]

Did anyone have any success with this?

I've been trying to randomize sprites in my weapon's fire state but have so far gotten nowhere. After hours of tinkering I ended up with this:

Code: Select all

Fire:
TNT1 A 1 BRIGHT
				{
					invoker.sprite = GetSpriteIndex("MFLS");
					invoker.frame = random(0, 2);
// more firing state code, etc.
				}

This doesn't work though, nothing gets displayed for this frame. Ideally the result would display one of these at random:

MFLS A 1
MFLS B 1
MFLS C 1

The sprites are all valid if I define them directly, no issue there. I'm running out of ideas on what to try next.

Does anyone know how to get this done?

[Player701]

Code: Select all

let psp = player.GetPSprite(PSP_WEAPON);
psp.Sprite = GetSpriteIndex("MFLS");
psp.Frame = random(0, 2);

[Dr. Van Nostrand]

Thank you, that worked!

I think I understand where I was going wrong now... For anyone googling this issue in the future, have a look at the available internal overlay layers here:

https://zdoom.org/wiki/A_ClearOverlays