A way to amplify ability damage without damage engine, with blz natives

[lishi1608]

require recent patch. I tested following code on 1.31.1
the idea is to dynamically modify ability field when some spell ordered, using BlzSetAbilityXXXLevelField functions. Don't know if someone posted it before.

private function ordered takes nothing returns boolean
        local ability ab
        if GetIssuedOrderId() == OrderId("fanofknives") then
            call BJDebugMsg("ordered, level: " + I2S(GetUnitAbilityLevel(GetOrderedUnit(), 'AEfk')))
            set ab = BlzGetUnitAbility(GetOrderedUnit(), 'AEfk')
            call BlzSetAbilityRealLevelField(ab, ABILITY_RLF_DAMAGE_PER_TARGET_EFK1, GetUnitAbilityLevel(GetOrderedUnit(), 'AEfk') - 1, 100.0 * GetHeroAgi(GetOrderedUnit(), true))
        endif
        set ab = null
        return false
    endfunction

private function init takes nothing returns nothing
        call RegisterAnyPlayerUnitEvent(EVENT_PLAYER_UNIT_ISSUED_ORDER, function ordered)
endfunction

edit: use
EVENT_PLAYER_UNIT_SPELL_* events instead of EVENT_PLAYER_UNIT_ISSUED_ORDER should also works

 

[Pyrogasm]

There is now a native ‘any unit damaged’ event so really a damage engine is mostly unnecessary anyway. You could achieve this functionality just using that new event without having to modify spell fields.

 

[Chaosy]

Wouldn't this change the ability for all users?

 

[lishi1608]

Wouldn't this change the ability for all users?

no.
set ab = BlzGetUnitAbility(GetOrderedUnit(), 'AEfk')
this ability instance is for the GetOrderedUnit() only.

 

[lishi1608]

There is now a native ‘any unit damaged’ event so really a damage engine is mostly unnecessary anyway. You could achieve this functionality just using that new event without having to modify spell fields.

yes. And there's a tiny difference though: my method respect the max damage field of the ability.

 

[Chaosy]

Hm, that's kinda cool.

 

[Dr Super Good]

Does it work? Since if BlzSetAbilityRealLevelField returns false it means the setting failed and it seems to do that for a lot of fields.

 

[lishi1608]

Does it work? Since if BlzSetAbilityRealLevelField returns false it means the setting failed and it seems to do that for a lot of fields.

the code in my post is cut from a working example. I also tested change the missing chance of Demon Hunter's evade ability, it works too. Not sure about other abilities.

 

[Tasyen]

For passive abilities changes are often not applied, one can refresh such an ability by increasing and decreasing that abilities level (does not work for some abilities although, if they are 1 level only).

After doing that the ability uses the changed values (tested for devotion aura, ATK damage, attack speed, armor, attribute boni Hero version, Move Speed by Boots).