Fireball AOE Question

Hi everyone. Just wanted to get something straight. Hope someone can help me.

My question is regarding fireball and how the AOE dmg works

Example:
Lets say my fireball does 100 dmg
i have 100% increased spell/fire damage and 50% increased area damage.

I hit a target and there is another mob standing inside the explosion radius. I'm not using pierce, chain or fork.

I am not sure hot it works but i have two guesses:

1.
All enemies inside the AOE take the same dmg:
All enemies: 100 * 2.5 = 250 damage

2.
The main target take both the hit damage and the explosion damage, the surrounding enemies take only explosion:
Main target: 100 * 2 + 100 * 2.5 = 450 damage
Surrounding enemies: 100 * 2.5 = 250 damage

I'm Guessing that it's the first case but i want to get this confirmed by someone who actually knows.

Third case rather.

The targets only take damage from the initial hit, which doesn't have the aoe tag on it.

So it'll be:

Main target: 100 * 2 = 200 damage
Surrounding enemies: 100 * 2.5 = 250 damage

You sure about this? This means that Conc effect has no effect on the single target dmg.

Conc effect is a widely used support for fireball so i think many people would be surpriced if you are right.

Fireball explodes, it does area damage to everything in its radius.

So, 100 * 2.5 = 250dmg

Only when the fireball pierces, it doesn't explode so it does no area damage until it explodes but when it explodes it does area damage to everything it hits.

From Wiki:

"

Area of Effect: The radius of the explosion caused by collision (with either an enemy or a terrain obstruction) is affected by all AoE increases. Full spell damage is done to any enemy in range of the explosion.

Piercing: A fireball that pierces an enemy and hits another enemy will only cause the AoE damage effect on the last enemy struck. Any enemies hit by the projectile which successfully pierce or fork will take full spell damage but the projectile won't explode.

As i understand this the enemy that the fireball explodes on will get the full dmg (projectile + aoe)

The question is if counts as two hits (one with the AOE tag on it and one with the Proj tag) or if its convertet into 1 hit (with both the AOE and Proj tags on it)

... or if its something completely different

Each attack or skill has only ever one damage calculation for each instance of its effects. (Ie. once per projectile)

So, a fireball that explodes gets all appropriate modifiers attached to it in a single calculation:

Increased spell damage, increased elemental damage, increased fire damage, increased aoe damage added together, multiplied by any more or less modifiers and then crit chance, crit multiplier, resistances applied to it.

So, you don't get two hits out of it. You get a single exploding fireball hit, doing fire damage increased by all its modifiers, doesn't matter if its increased fire damage or increased aoe damage (as long as it explodes for aoe ofc).

but what about the projectile dmg. does that apply for the AOE explosion?

Yes it does.

(Thought I forgot something in my list. :D )

Basically every single modifier that is appropriate to a skill applies to it in the damage calculation.

Fireball is a projectile fire spell that explodes for area damage. So any modifier that applies to that (fire, spell, aoe, projectile, etc.) will increase/decrease its damage.

@Serika

What is not told by the poe wiki is what types of dmg the main target takes and what types the nearby enemies take.

it says that the AOE tag will not apply if the fireball pierces.

but will the projectile damage modifiers apply to the AOE damage that the neaby enemies take?

It also says that the explosion damages neaby foes. This could mean that the explosion(AOE) doesnt apply for the main target. (As Obscurin says)

Do you have any specific knowledge or experience with this skill?

"

morten_dm wrote:

It also says that the explosion damages neaby foes. This could mean that the explosion(AOE) doesnt apply for the main target. (As Obscurin says)

Obscurin is wrong. If the fireball explodes, the damage is dealt as area damage to every single target involved. It does not matter which target made the fireball explode.

This comes up very often, and every single time somebody makes the mistake of thinking that a fireball exploding somehow deals different damage to the enemy it hits compared to other enemies caught in the explosion.

The wiki is sometimes very bad at explaining specific game mechanics, as it's not an official resource and lacks a lot of stuff, and sometimes has blatantly wrong wordings, and so on.