Which summoning ability allows us to limit the number of summoned creature type?

Which summoning ability allows us to limit the number of summoned creature type?

For instance, I want a summoning ability which lets me summon Grunts. But there can only be 3 Grunts at one time. So if I summoned another one, the first Grunt will disappear.

Do I need to trigger this or is there a ready ability? If I recall correctly, the "number of units summoned" on abilities only lets us decide how many is initially summoned.

Many thanks.

If you want to be able to summon all 3 at once, then use Feral Spirit.

If you want to summon them individually, Carrion Beetles is your choice..although, good luck getting them to work w/o corpses...as I recall corpse-based abilities are nasty..at least raise skeletons always was...anyways..yea.

Water Elemental then trigger it so that 3 may only be on the field at an time

-Av3n

So I do have to use triggers, eh... *sigh* Okay then. Thanks again, guys.
Cheers!

Try this:

That will make a max of 3 of your summoned units by all players. If you need one that works for each player individually, I can whip it up for you.

EDIT: Fixed the trigger! I'd forgotten the last line.

@Pyrogasm:Did you deduct three to the variable summoned_unit_index? Can you explain why, I can't figure it out, Thanks.

To keep a running loop of "Summoned_Unit[]", such that it never goes over 3. If you look at how feral spirit works in-game, you'll notice that if you re-summon your wolves, the previous ones are lost and you regain new ones.

If I had just put
It would not have acheived this effect. The way I've set up keeps adding units to a 3-unit "Stack" and removes the top one each time.

Think of it this way:

1. Unit A is summoned
2. Summoned_Unit_Index increases from 0 to 1
3. Summoned_Unit[1] is empty, so the unit is stored to the variable and nothing happens
4. Unit B is summoned
5. Summoned_Unit_Index increases from 1 to 2
6. Summoned_Unit[2] is empty, so the unit is stored to the variable and nothing happens
7. Unit C is summoned
8. Summoned_Unit_Index increases from 2 to 3
9. Summoned_Unit[3] is empty, so the unit is stored to the variable and nothing happens
10. Unit D is summoned
11. Summoned_Unit_Index increases from 3 to 4
12. 4 > 3, so it resets Summoned_Unit_Index to 1 (4-3)
13. Summoned_Unit[1] is occupied, so Unit A is killed, SFX happen, and Unit D is stored to the variable
14. Etc.

Make sense?

Why don't you just count all units in the map of type summoned unit when a unit is summoned?
Then kill the summoned unit if that count is over 3.

You don't need any variables then, and it keeps you from going over the limit.

Problem is then which summoned unit is going to get killed? We want the first ones out to be the ones replaced, right?

I'm going to try that first code

Kill the first ones?
I guess that's a valid point.

Realistically though, that's why summoned unit duration was invented.
To max out how many of X summoned creature you can have at a time.

Why not just check if there is three. Then kill the one that is being summoned eh?

-Av3n

Yes now i understant why , thanks for explaining it, I was having a hard time understanding how it worked.

Don't mean to be too harsh Av3n, but read the damn posts above you!

Explaination:

I read that... And i said Why not. I never told to use it did i?

-Av3n

Try using Pyro's trigger, but add in a couple conditions so that it will select the summon with the lowest health, so it realistically will be more useful. Also, you should be able to set it so that the unit being killed is not equal to the summoned unit.