Why does this crash?

[Tartlman]

Hey, so I'm making a custom weapon, and there's a problem where whenever I fire the weapon with 0 ammo, the game crashes.
The code that crashes when firing the weapon without any ammo looks like this:

Code: Select all

Fire:
BG2G FGHIJ 1 A_RailAttack (25, 0, 1, "", "", 0, 10.0, "none", 0, 0, 8192, 50, 0.5, 2.0, "MiniPlasma")
Goto Ready

And that causes a crash. What I want to know is why the game crashes when I do this.
Currently, i'm using a workaround that looks like this:

Code: Select all

Fire:
		BG2G E 1 A_JumpIfInventory ("Cell", 1, "Shoot")
		BG2G E 1 A_PlaySound ("weapons/bfg10kcool")
		Goto Ready
		Shoot:
		BG2G FGHIJ 1 A_RailAttack (25, 0, 1, "", "", 0, 10.0, "none", 0, 0, 8192, 50, 0.5, 2.0, "MiniPlasma")
		BG2G E 1 A_TakeInventory ("Cell", 5) //weapon consumes no ammo normally
		Goto Ready

And it works perfectly fine, maybe it's actually a better way to do it, but what I want to know is why the game crashes if I don't do so.

[wildweasel]

Can you please post the whole actor (the variant that crashes)?