ZDoom

Thank you for being more precise. Custom inventory with autouse would do the same thing, but my suggestion was made out of ignorance with regard to the source code. The idea was to make a more simple update.

The problem is that even if you do that, it wouldn't work. CustomInventory is the only actor class which will make its state be run by its owner.

What you want isn't to have health items behave like CustomInventory, what you want is AutoUse conditions for CustomInventory.

It is explicitly denoted that you would have to add a use state to the item for it to be used. Likewise, inference would say that you also add code for the use state on this.

Since nothing but CustomInventory actually has a use state the entire suggestion is pointless.

Just like it says. But for a clearer example
[spoiler]ACTOR SecondWind : ArtiHealth
{
Game Raven
Game Doom
SpawnID 24
+COUNTITEM
+INVENTORY.PICKUPFLASH
+INVENTORY.FANCYPICKUPSOUND
+Inventory.InvBar
HealthPickup.AutoUse 2
Inventory.MaxAmount 1
Inventory.Icon STIMA0
States
{
Spawn:
STIM A -1
Stop
Use:
TNT1 A 0 A_JumpIfInventory ("FighterSoul", 1, "FighterUse")
TNT1 A 0 A_JumpIfInventory ("MageSoul", 1, "MageUse")
TNT1 A 0 A_JumpIfInventory ("ClericSoul", 1, "ClericUse")
Fail
FighterUse:
TNT1 A 0 A_GiveInventory ("Health", 83)
Stop
ClericUse:
TNT1 A 0 A_GiveInventory("Health", 66)
Stop
MageUse:
TNT1 A 0 A_GiveInventory ("Health", 33)
Stop
}
}[/spoiler]
In the above scenario, the item would check for dummy items and heal the player according to the item found in the inventory. This mainly caters to Strife and Raven, but could be used in Doom to impart other effects on death as well. It could be used to give player classes a death throes or heal and teleport the player. The item would only refer to the use state if present, otherwise it would use the Health property to determine its action.