How to - own combatFormula without sources

[andu]

How to make an own Combat Formula without editing sources?
I want to make a spell what dealing specific damages, i need to make an own formula.

for eg.

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_FIREDAMAGE)
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_HITBYFIRE)
setCombatFormula(combat, COMBAT_FORMULA_LEVELMAGIC, -0.4, 0, -0.5, 0)

local distanceCombat = createCombatObject()
setCombatParam(distanceCombat, COMBAT_PARAM_TYPE, COMBAT_FIREDAMAGE)
setCombatParam(distanceCombat, COMBAT_PARAM_EFFECT, CONST_ME_HITBYFIRE)
setCombatParam(distanceCombat, COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_FIRE)
setCombatFormula(distanceCombat, COMBAT_FORMULA_LEVELMAGIC, -0.4, 0, -0.5, 0)

function onCastSpell(cid, var)
	if(variantToNumber(var) ~= 0) then
		return doCombat(cid, distanceCombat, var)
	end
	return doCombat(cid, combat, var)
end

local combat... and distanceCombat are out of function onCastSpell and if i try add here something like getPlayerLevel(cid) i gets errors in console

there is any alternate (without making new spell)?

 

[Colandus]

You use a callback... I think the function was doSetCombatCallback or something, there are spells using this already I'm not at my computer so I cannot find some for ya