[Spell] Passive Spell Question

[cpjok]

Hey been 3+ years since I made maps, but recently getting back into it.

I am wondering how I go about setting up a passive projectile skill

5% chance to trigger when being hit.

Example: the fan on knives spell but a passive version. That has 5% chance to proc shooting knives around dealing 5x weapon damage to all within 300 area.

 

[millzy]

have a passive that does nothing check if attacked unit has ur passive ability if so 5% chance to create a dummy unit that casts ur spell

 

[MyPad]

It's done via damage detection, with optional filters, such as if the damaging unit is an enemy and if the damage should be greater than 0.

Now the interesting part is that it the projectile skill can be outsourced to the Object Editor for simplicity via a dummy ability, or triggered, which requires a Missile and Dummy system, but can give more freedom to the coder on how it will behave.

For clarification, I assume that the meaning of hit is when the unit is actually damaged.