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Added 8 minutes later

function Start()
hero = GetAttackerHero
UnitCastGlobalSpell(hero, 54)
end

It says in the panel "wrong type of argument 1 when calling function UnitGlobalCast", what's wrong?

Added 8 minutes ago

function Start()
hero = GetAttackerHero()
UnitCastGlobalSpell(hero, 54)
end

It says in the panel "wrong type of argument 1 when calling function UnitGlobalCast", what's wrong?

After GetAttackerHero, there should be parentheses (). This function always returns 'attacker-hero', so you can skip it.

yeah, thanks, that works.

And is it possible to make a random spell selection? Let me explain:

function Start()
hero = GetAttackerHero()
cast = random(5)
if cast == 0 then
UnitCastGlobalSpell(hero, 54)
elseif cast == 1 then
UnitCastGlobalSpell(hero, 24)
elseif cast == 2 then
UnitCastGlobalSpell(hero, 25)
elseif cast == 3 then
UnitCastGlobalSpell(hero, 28)
elseif cast == 4 then
UnitCastGlobalSpell(hero, 29)
elseif cast == 5 then
UnitCastGlobalSpell(hero, 23)
end
end

?

The random function doesn't work in battle.

Oh, that's a shame. But is there a way to make a random cast? Perhaps generate a random number each day and then request it in the battle script?

After each battle, you can use the following code:

function rndcast()
	while 1 do
		SetGameVar('spell', random(5))
		local index = GetLastSavedCombatIndex()
		while index == GetLastSavedCombatIndex() do
			sleep(10)
		end
	end
end
startThread(rndcast)

And in the combat script, replace the line:
cast = GetGameVar('spell')+0
with the line:
cast = random(5)
Yes, and random(5) will return a random number from 0 to 4. That is, random(n) returns a random number from 0 to n-1.

yes, now it really casts spells randomly. However, the error is now different; it can't cast any spell except for prayer. I assign mass haste, stone skin, etc., but it says that "hero can't cast #25, 24, etc."
Here's a snippet of the script again:

if cast == 0 then
UnitCastGlobalSpell(hero, 54) --- prayer, works
elseif cast == 1 then
UnitCastGlobalSpell(hero, 24) --- haste
elseif cast == 2 then
UnitCastGlobalSpell(hero, 25) --- stone skin
elseif cast == 3 then
UnitCastGlobalSpell(hero, 28) --- bloodlust
elseif cast == 4 then
UnitCastGlobalSpell(hero, 29) --- deflection
elseif cast == 5 then
UnitCastGlobalSpell(hero, 23) --- prophet's power
end

Please explain this moment; otherwise, everything seems to be becoming clear.

Added 1 minute ago
Oops, sorry, the question is withdrawn. I needed to look for mass spells.

Thank you very much.

The first thing that comes to mind is a lack of mana. These spells consume mana, and there must be enough of it.

yes, by the way, mana shortage is also an issue, I checked =)
And is it possible to make spells free while still using autocast?

yes, by the way, mana shortage is also an issue, I checked =)
And is it possible to make spells free while still using autocast?

Yes, you can, by adding to the hero as much mana as the spell costs.

yes, I already did that. I would simply check how much mana he had at the beginning of the battle, then give him 100, and after a random cast, return the amount he had at the beginning of the battle. Thank you very much! Now it's much clearer to me.

Added 3 hours and 55 minutes later
I have a new question:

-How do I check the hero's name at the start of the battle?
I'm recording it like this:

hero = GetAttackerHero()
if GetHeroName(hero) == 'Alaric' then

But it doesn't work... Even if I write it simpler:

hero = GetAttackerHero()
if hero == 'Alaric'

Ps: I'm probably bothering you a lot, but I really want to figure this out.

No need to make it "simpler." `GetHeroName` provides the ability to obtain a scripted hero name. What should happen if the hero passes the check?

Battle script: function Start() hero = GetAttackerHero() if GetHeroName("hero") == 'Alaric' then cast = GetGameVar('spell')+0 mana = GetUnitManaPoints(hero) SetUnitManaPoints(hero, 100) if cast == 0 then UnitCastGlobalSpell(hero, 54) elseif cast == 1 then UnitCastGlobalSpell(hero, 221) elseif cast == 2 then UnitCastGlobalSpell(hero, 218) elseif cast == 3 then UnitCastGlobalSpell(hero, 220) elseif cast == 4 then UnitCastGlobalSpell(hero, 219) elseif cast == 5 then UnitCastGlobalSpell(hero, 216) end SetUnitManaPoints(hero, mana) end Script: function rndcast() while 1 do SetGameVar('spell', random(6)) local index = GetLastSavedCombatIndex() while index == GetLastSavedCombatIndex() do sleep(10) end end end startThread(rndcast)

The word "hero" should be written without quotation marks.

yes, I made another silly mistake, thanks. there was a missing "end".

Added 13 hours and 59 minutes ago
so, the most important question for today remains:

And how to handle attaching a battlescript to a hero? The thing is, I would like to be able to recruit such a hero, let's say, in a tavern, but in this case, he appears on the map without the attached script and loses his functions.
Is there a function that, if such a hero appears on the map, automatically attaches the battlescript to him? Or is there another way?