[Lua] Spell Guide

[P1raten]

Introduction
Some people might be unaware of that your able to script Spells in Lua, like it or not this is the case.

Doing this isnt very hard. All you need is the right resources.

Example of a Spell Script:

local Caster = nil

RegisterDummySpell(686, "ShadowBoltOne_Cast")
RegisterDummySpell(695, "ShadowBoltTwo_Cast")
RegisterDummySpell(705, "ShadowBoltThree_Cast")
RegisterDummySpell(1088, "ShadowBoltFour_Cast")
RegisterDummySpell(1106, "ShadowBoltFive_Cast")
RegisterDummySpell(7641, "ShadowBoltSix_Cast")
RegisterDummySpell(11659, "ShadowBoltSeven_Cast")
RegisterDummySpell(11660, "ShadowBoltEight_Cast")
RegisterDummySpell(11661, "ShadowBoltNine_Cast")
RegisterDummySpell(25307, "ShadowBoltTen_Cast")
RegisterDummySpell(27209, "ShadowBoltEleven_Cast")
RegisterDummySpell(47808, "ShadowBoltTwelve_Cast")
RegisterDummySpell(47809, "ShadowBoltThirteen_Cast")


function ShadowBolt_CastOne(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 9%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastTwo(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 11%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastThree(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 15%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastFour(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastFive(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	f (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastSix(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastSeven(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastEight(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastNine(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastTen(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastEleven(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastTwelve(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

function ShadowBolt_CastThirteen(effectIndex, Spell)
	local Caster = Spell:GetCaster() 
	if (Spell:GetSpellState() == 0) then
		if (Caster:GetManaPct() => 16%) then
		Spell:Cast()
		else
		end
	else
	end
end

This script is a fix for a old ArcEmu ticket which i dont know if its fixed or not.

Description:

Character: Warlock lvl 1
Casting: Shadowbolt cost: 37 mana
Once i'm below 37 mana my cast icon grays out. Once i have 37 mana my cast icon lites back up. but when i try to cast it says i don't have enough mana. It's not till i have 48 mana before i can cast Shadow bolt again.

Since shadow bolt now takes % instead of (x)amount of mana i decided to fix it with Lua.

The Guide

This script is very plain.

local Caster = Spell:GetCaster()

Caster is the same as Spell:GetCaster()

For those of you who don't know; local means that the variable only can be used for its purpose within the current file.

RegisterDummySpell(686, "ShadowBoltOne_Cast")

This trigger may be new to some people and old to others.

RegisterDummySpell(entry, funcName)

Put your spell EntryID where entry is and Function Name where it says funcName.

function ShadowBolt_CastOne(effectIndex, Spell)

Make sure the parameters are correct.

effectIndex and Spell must be included in the parameters.

if (Spell:GetSpellState() == 0) then

If the Spell isnt being casted right now then..

:GetSpellState FLAGS:
SPELL_STATE_NULL = 0,
SPELL_STATE_PREPARING = 1,
SPELL_STATE_CASTING = 2,
SPELL_STATE_FINISHED = 3,
SPELL_STATE_IDLE = 4

if (Caster:GetManaPct() => 9%) then

If the casters Mana Procent is above 9% then..

Spell:Cast(true)

The player is allowed to cast the spell.

If you set Cast to false then you force the player to cast the spell.

End

That's all for this guide, folks. Hope it helped.

[Daimyo2704]

Looks great, thanks for the tut. +rep.

[P1raten]

Thanks.

[Ground Zero]

Whats with all the extra else's before the ends?

Otherwise nice guide.

[P1raten]

Whats with all the extra else's before the ends?

Otherwise nice guide.

Bad Habit.

[Daimyo2704]

-- Heroic Fury [Warrior]

local Caster = Spell:GetCaster()   

RegisterDummySpell(60970, "HeroicFury_Spell")

function HeroicFury_Spell(effectIndex, Spell)
        if(Spell:GetSpellState() == 2) then
          local caster = Spell:GetCaster()
          for _,v in pairs(caster) do
          local Mechanic = {7922, 60995, 19675, 45334, 408, 8643}
             if(v:HasAuraWithMechanic(Mechanic) == true) then
               v:RemoveAura(Mechanic)
          end
     end
end

Is this right?
And do you got any idea how I reset the cooldown of Intercept =D?

[P1raten]

Is this right?
And do you got any idea how I reset the cooldown of Intercept =D?

local Caster = nil

RegisterDummySpell(60970, "HeroicFury_Spell")

function HeroicFury_Spell(effectIndex, Spell)
	Caster = Spell:GetCaster()
        if(Spell:GetSpellState() == 2) then
          local caster = Spell:GetCaster()
          for _,v in pairs(caster) do
          local Mechanic = {7922, 60995, 19675, 45334, 408, 8643}
             if(v:HasAuraWithMechanic(Mechanic) == true) then
               v:RemoveAura(Mechanic)
			end
		end
	end
end

Fixed some errors.

[Daimyo2704]

Thanks, +rep.

Edit: Must spread : /

[P1raten]

Thanks, +rep.

Edit: Must spread : /

np

fillerz

[mag1212]

nice guide +Rep

[P1raten]

Thank you.

[pantryboy]

local Caster = nil

RegisterDummySpell(60970, "HeroicFury_Spell")

function HeroicFury_Spell(effectIndex, Spell)
	Caster = Spell:GetCaster()
        if(Spell:GetSpellState() == 2) then
          local caster = Spell:GetCaster()
          for _,v in pairs(caster) do
          local Mechanic = {7922, 60995, 19675, 45334, 408, 8643}
             if(v:HasAuraWithMechanic(Mechanic) == true) then
               v:RemoveAura(Mechanic)
			end
		end
	end
end

Fixed some errors.

Not to bump an old thread, but that still won't work. You see, you're trying to use :HasAuraWithMechanic(), which requires a spell ID (a number), but you're using Mechanic, a table. A table is it's own seperate identity, so it won't automatically take the values from within the table, Lua will complain that it got a table instead of a number. Also, you're trying to loop 'caster' (Spell:GetCaster()) through a loop, which also won't work, since 'caster' is a unit / object / item depending on what casted it.

Here's your fixed code:

function HeroicFury_Spell(effectIndex, Spell)
	if (Spell:GetSpellState() == 2) then
		local Caster = Spell:GetCaster();
		local Mechanic = {7922, 60995, 19675, 45334, 408, 8643};
		for _, v in pairs(Mechanic) do
			if(Caster:HasAuraWithMechanic(v) == true) then
				Caster:RemoveAura(v);
			end
		end
	end
end

[Dr. Livingstone]

Very good guide. I don't know how you make so many Jebus... +Rep for this

[P1raten]

Thank you. Im gonna make some more soon.