The "How do I..." Thread

[Blue Shadow]

When does the monster enter it?

When it no longer has targets to pursue. If the Idle state is not present, it'll enter the Spawn state.

[worldendDominator]

When it no longer has targets to pursue. If the Idle state is not present, it'll enter the Spawn state.

Thanks, I thought so.
Can a monster enter its Spawn state twice if it has an Idle state? Not counting explicit gotos, of course.
I'm trying to ascertain if I can safely put instructions that only have to be executed once into Spawn state.

[Blue Shadow]

With the Idle state present, the Spawn state is only entered once, when the actor first spawns.

[Enjay]

Indeed, I've done that for a few enemies: in the spawn state sequence I randomly pick an X and Y scale (nothing too dramatic) so that there is the possibility of each copy of the enemy in the map looking slightly different to its fellow enemies. Of course, if the enemy went back to the spawn state after the player died, the random scaling would be re-picked and an enemy could visibly change size. So I use an idle state instead and when the player dies, the enemy goes into that instead.

[Wolfbrf]

My mod has many weapons, I want to put a limit(maybe 2 or 3 of each type), how i do it?

[worldendDominator]

Make an inventory item for each weapontype, which will serve as a counter of how many weapons of that type you currently have.
Make an custom inventory item for each weapon, which will check if you have less than Y of the respective "weapontype counter" item (above), where Y = your limit for this weapontype. If you have less than Y, it gives you the weapon. If it's over the limit, it does nothing (Pickup state ends with Fail keyword).
Make the latter item spawn instead of actual weapons.

E.g. this will let you have either regular shotgun or super shotgun, but not both:

---

Code: Select all

Actor ShotgunCounter : Inventory {
	Inventory.MaxMaxAmount 1 // 1 here is the limit
}

Actor ShotgunGiver : CustomInventory replaces Shotgun {
	+INVENTORY.AUTOACTIVATE
	Inventory.PickupSound "misc/w_pkup"
	States {
		Spawn:
			SHOT A -1
			Stop
		Pickup:
			TNT1 A 0 A_JumpIfInventory("ShotgunCounter",1,"FailState") // 1 here is the limit
			TNT1 A 0 A_GiveInventory("ShotgunCounter",1)
			TNT1 A 0 A_GiveInventory("Shotgun",1)
			Stop
		FailState:
			// Show a message "you have too many weapons of this type" or something
			Fail
	}
}

Actor SuperShotgunGiver : CustomInventory replaces SuperShotgun {
	+INVENTORY.AUTOACTIVATE
	Inventory.PickupSound "misc/w_pkup"
	States {
		Spawn:
			SGN2 A -1
			Stop
		Pickup:
			TNT1 A 0 A_JumpIfInventory("ShotgunCounter",1,"FailState") // 1 here is the limit
			TNT1 A 0 A_GiveInventory("ShotgunCounter",1)
			TNT1 A 0 A_GiveInventory("SuperShotgun",1)
			Stop
		FailState:
			// Show a message "you have too many weapons of this type" or something
			Fail
	}
}

If it's possible to drop weapons in your mod, you should remove a counter item when you do. E.g. if you drop a shotgun, you lose one ShotgunCounter.

[Wolfbrf]

If it's possible to drop weapons in your mod, you should remove a counter item when you do. E.g. if you drop a shotgun, you lose one ShotgunCounter.

thanks for the tip. about weapon drop, it can be a problem only for weapon which use 2 ammo(bullet and rocket, just a exemple) , correct? for the others guns, it seem to work very well

[worldendDominator]

I'm not sure what you mean. I wanted to say that if the player has a way to drop the weapon he's carrying (with a special key, for example), you should reduce the counter.
But now that you mention it, you can make weapons that belong to several types at once, without many changes in the code. In this case, its custom inventory item should check both counters, and increase/reduce them both when picked up/dropped.

There's a mod called LegenDoom that probably uses a similar system - there's a ton of variations for each weapon type, but you can only have one. You can download and examine it if you want.
Edit: Although you probably shouldn't. It's really complicated.

[Wolfbrf]

thanks a lot, it helped me.

maybe it can work now:



Spawn:
WEAP Z 15
TNT1 A 0 A_Takeinventory("shotgunlimitcounter",1)
WEAP Z 0 A_SpawnItemEx("shotgunPickup")
stop

[SiMpLeToNiUm]

Hello! Me again with another silly question! (The following sentences are a prequel to the question) I made what appears to be a waterfall. I am using DOOM 1 with no extra textures, so I used the default water flat on a wall (yes, I know). I have also made it non-solid, as the middle part of the back and front sidedefs is textured and then wrapped from ceiling to floor. What I want to know is: Can I set both the front and back sidedefs to scroll texture downwards, so that when one steps inside/under the waterfall, the water appears to fall both inside and out? Map is in UDMF format. I can always post a short video explaining this as well if it isn't clear.

[Nevander]

Is it possible to hide the alternative HUD if it's in use with ACS using the "IsPlaying" inventory trick? I can hide the normal status bar and fullscreen hud but not the alt hud if it's currently in use. Can the ALTHUDCF lump be of use here at all? Can it use InInventory checks like SBARINFO?

[Blue Shadow]

No, it is not. As far as I know, the althud was deliberately made unmoddable (apart from what can be done with ALTHUDCF, of course).

[Vegeta(dw)]

I want to make a simple multiplayer mod, how do I create player classes that start with a specified

-skulltag rune
-health
-weapon
-ammo
-armor

Thanks in advance

[ImBringingTaxicab]

Never modded Doom before.

I recently downloaded the Brutal Doom - Hell on Earth Starter Pack.
It's amazing. But now I read that it uses Freedoom and advises to instead use Doom2 as the Iwad.
However I really liked some of the new sprites from Freedoom (like Armor and Health packs/potions, ammo clips, etc.). I'd now like to play with the Doom2 iwad but replace just a few sprites with the Freedoom version.
I got as far as looking through the freedoom.wad with a texture editor (SLADE) and finding some of the sprites I'd like to use, but I don't know what to do from there. How do I create a pwad with these sprites and tell the engine to use it? Tried a few things but it never worked ingame.

[worldendDominator]

I want to make a simple multiplayer mod, how do I create player classes that start with a specified

-skulltag rune
-health
-weapon
-ammo
-armor

Thanks in advance

Inherit from PlayerPawn class.
Weapons, ammo and armor (and probably rune as well) should be listed in its Player.StartItem property.
Health might be jut its Health property, but I'm not 100% positive on that.