Full Distribution

data/spells/scripts/runes/great fireball.lua

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+local combat = Combat()
+combat:setParameter(COMBAT_PARAM_TYPE, COMBAT_FIREDAMAGE)
+combat:setParameter(COMBAT_PARAM_EFFECT, CONST_ME_FIREAREA)
+combat:setParameter(COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_FIRE)
+combat:setArea(createCombatArea(AREA_CIRCLE3X3))
+
+function onGetFormulaValues(player, level, maglevel)
+	local base = 50
+	local variation = 15
+	
+	local formula = 3 * maglevel + (2 * level)
+	
+	local min = (formula * (base - variation)) / 100
+	local max = (formula * (base + variation)) / 100
+	return -min, -max
+end
+
+combat:setCallback(CALLBACK_PARAM_LEVELMAGICVALUE, "onGetFormulaValues")
+
+function onCastSpell(creature, variant, isHotkey)
+	return combat:execute(creature, variant)
+end