Simple0steven
12-04-09, 12:08 AM
Some Basic LUA
How a LUA script is built
LUA is a scripting method that allows you to scripts monster's to do things likecast spells speak spawn other mobs and much more. You would mainly want to use it to script an instance
In this TUT i'm going to show you very basic LUA scripting
Everything an npc needs to do starts with FUNCTION and is going to end with END
so we have this:
function nameoffuntion(Unit, Event)
end
An Example would be
function NPCNAME_OnCombat(Unit, Event)
end
This is how the beginning of a script will look like.
Also for the functions like
function NPCNAME_OnDied
or
function NPCNAME_OnKilledTarget
Make sure that you add a RemoveEvents() so that your mob doesnt keep on looking for functions when he is not even in combat
First TUT: Making an NPC speak
We can make an NPC speak by adding this under one of our functions
Unit:SendChatMessage(type, language, "what am i going to say?")
If we wanted him to say Hello there noob! when he enters combat we do this
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(11, 0, "Hello there noob!")
end
The two most basic types are 11 and 12
11= monster say
12= monster yell
For a language anyone can understand use 0
0 is universal, so obviously everyone understands it.
Lets start a basic script.
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
Now we need add a unit register for the Oncombat function and we do that by adding this to the bottom of our script
RegisterUnitEvent(npcentry, event, "functionname")
Now your script should look like THIS:
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
RegisterUnitEvent(npc_entry, 1, "NPCNAME_OnCombat")
What this does is when our NPCNAME enters combat he/she will yell out I Shall PWN YOU!
Now for some more functions
Second Part: More Functions
A LUA script can have very many functions. four basic functions are:
< OnCombat >
< OnDied >
< OnKilledTarget >
< OnLeaveCombat >
Once we add those in it will look like
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npc_entry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npc_entry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npc_entry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npc_entry, 4, "NPCNAME_OnDied")
What these will do is let our mob
enter combat
register he died
register he killed someone
register when he leave combat
THIRD PIECE: Casting Spells
Non-AoE Spell On Everyone.
An npc is pretty boring if he doesnt cast spells on you, so it's time for us to make him
We can do this by a new function in the script:
function NPCNAME_SpellName(Unit, Event)
end
Pnce you make the function, you have to add a:
Unit:CastSpellOnTarget(spellid, Unit:WhoShouldITarget) CastSpellontarget means its without casting time
or we use
Unit:FullCastSpellOnTarget(spellid, Unit:whodoiattack?) this one is with casting time
soooo if we use no casting time we get
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(spellid, Unit:whoiattack?)
end
OR
we do a casting time spell and have
function NPCNAME_Spellname(Unit, Event)
Unit:FullCastSpellOnTarget(spellid, Unit:whoiattack?)
end
whoiattack can be:
- GetRandomPlayer(0) this is a Random Player
- GetRandomPlayer(1) this is a Random guy in Short-Range
- GetRandomPlayer(2) this is aRandom guy in Mid-Range
- GetRandomPlayer(3) this is a Random guy in Long-Range
- GetRandomPlayer(4) = Random guy with Mana
- GetRandomPlayer(5) = Random guy with Rage
- GetRandomPlayer(6) = Random guy With Energy
- GetRandomPlayer(7) = Random guy WILL NOT BE Main-Tank
- GetMainTank()
- GetClosestPlayer()
- GetAddTank()
Ok, now I want you to add to your script, and we can do this by adding:
Unit:RegisterEvent("functionname", timeinMS, HowManyTimes?)
to your OnCombat function:
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
Unit:RegisterEvent("NPCNAME_Spellname", 10000, 0)
end
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(spellid, Unit:GetRandomPlayer(0))
end[/color]
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npcentry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npcentry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npcentry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npcentry, 4, "NPCNAME_OnDied")
If your npc casts on itself instead of who you want use this
function Name_Event(pUnit, Event)
local plr = pUnit:GetRandomPlayer(0) <-- Or something else
if (plr ~= nil) then
pUnit:FullCastSpellOnTarget(SpellID, player)
end
end
Dont need to use pUnit you can if you want but better off using Unit for this script
AoEffect Spells:
Sometimes you want your NPC to cast an AoE liked earthquake
Heres how
function NPCNAME_Earthquake(Unit, Event)
Unit:CastSpell(Spellid)
end
Remember we need to make a register also:
Unit:RegisterEvent("function_name", timeinms, howManyTimes?)
to our oncombat function:
After adding that our sccript looks like this
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
Unit:RegisterEvent("NPCNAME_Spellname", 10000, 0)
Unit:RegisterEvent("NPCNAME_Earthquake", 20000, 5)
end
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(Spellid, Unit:GetRandomPlayer(0))
end
function NPCNAME_Earthquake(Unit, Event)
Unit:CastSpell(Spellid)
end
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npcentry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npcentry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npcentry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npcentry, 4, "NPCNAME_OnDied")
More Events to See:
SendChatMessage
type:
11 – say
12 – yell
13 – whisper
Languages
0 = UNIVERSAL // Anyone can see this
1 = ORCISH
2 = DARNASSIAN
3 = TAUREN
6 = DWARVISH
7 = COMMON
8 = DEMONIC
9 = TITAN
10 = THELASSIAN
11 = DRAGONIC
12 = KALIMAG
13 = GNOMISH
14 = TROLL
33 = GUTTERSPEAK
35 = DRAENEI
RegisterUnitEvents events:
type:
1 = Enter Combat <Needed
2 = Leave Combat <Needed
3 = Killed Target <Needed
4 = Died <Needed
5 = AI Tick
6 = Spawn
7 = Gossip Talk
8 = Reach Waypoint
9 = On Leave Limbo
10 = Player Enters Range
A nice little example script is this
function Dark Illidan_ArcaneExplosion(Unit, Event)
Unit:SendChatMessage(12, 0, "To...much...ENNNNNNNNNEEEEEERRRRGGGGGGGYYYYYY!")
Unit:CastSpell(29973)
ArcaneTimer=math.random(25000,35000)
end
function Dark Illidan_Phase4(Unit, Event)
if Unit:GetHealthPct() < 30 then
RemoveEvents()
Unit:SendChatMessage(12, 0, "Impressive... Time for some fun!")
Unit:CastSpell(20620)
end
end
function Dark Illidan_Phase3(Unit, Event)
if Unit:GetHealthPct() < 50 then
RemoveEvents()
Unit:SendChatMessage(11, 0, "Congratulations on making it this far... but your luck has just run out")
Unit:CastSpell(45031)
end
end
function Dark Illidan_Phase2(Unit, Event)
if Unit:GetHealthPct() < 75 then
RemoveEvents()
Unit:SendChatMessage(11, 0, "I underestimated you mortals at first. It wont happen again. Let's start over and you will see what i mean!")
Unit:CastSpell(25840)
end
end
function Dark Illidan_Earthquake(Unit)
Unit:SendChatMessage(12, 0, "You will not prevail!")
Unit:CastSpell(35569)
end
function Dark Illidan_Garrote(Unit)
Unit:CastSpellOntarget(37066, Unit:GetRandomPlayer(0))
Unit:SendChatMessage(12, 0, "Haha! Gotcha!")
end
function Dark Illidan_OnCombat(Unit, Event)
Unit:SendChatMessage(11, 0, "Who dares disturb me in my lair!")
Unit:CastSpell(43648)
Unit:CastSpellOnTarget(37066, Unit:GetRandomPlayer(0)
ArcaneTimer=math.random(25000,35000)
Unit:RegisterEvent("Dark Illidan_ArcaneExplosion",ArcaneTimer,20)
Unit:RegisterEvent("Dark Illidan_Garrote",20000,4)
Unit:RegisterEvent("Dark Illidan_Earthquake",60000,10)
Unit:RegisterEvent("Dark Illidan_Phase2",1000,1)
Unit:RegisterEvent("Dark Illidan_Phase3",1000,1)
Unit:RegisterEvent("Dark Illidan_Phase4",1000,1)
end
function Dark Illidan_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
function Dark Illidan_OnKilledTarget(Unit, Event)
Unit:SendChatMessage(12, 0, "You are no match for me!")
end
function Dark Illidan_OnDied(Unit, Event)
Unit:SendChatMessage(12, 0, "But...but..How! how could i be defeated by mere mortals...")
RemoveEvents()
end
RegisterUnitEvent(22, 1, "Dark Illidan_OnCombat")
RegisterUnitEvent(22, 2, "Dark Illidan_OnLeaveCombat")
RegisterUnitEvent(22, 3, "Dark Illidan_OnKilledTarget")
RegisterUnitEvent(22, 4, "Dark Illidan_OnDied")
How a LUA script is built
LUA is a scripting method that allows you to scripts monster's to do things likecast spells speak spawn other mobs and much more. You would mainly want to use it to script an instance
In this TUT i'm going to show you very basic LUA scripting
Everything an npc needs to do starts with FUNCTION and is going to end with END
so we have this:
function nameoffuntion(Unit, Event)
end
An Example would be
function NPCNAME_OnCombat(Unit, Event)
end
This is how the beginning of a script will look like.
Also for the functions like
function NPCNAME_OnDied
or
function NPCNAME_OnKilledTarget
Make sure that you add a RemoveEvents() so that your mob doesnt keep on looking for functions when he is not even in combat
First TUT: Making an NPC speak
We can make an NPC speak by adding this under one of our functions
Unit:SendChatMessage(type, language, "what am i going to say?")
If we wanted him to say Hello there noob! when he enters combat we do this
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(11, 0, "Hello there noob!")
end
The two most basic types are 11 and 12
11= monster say
12= monster yell
For a language anyone can understand use 0
0 is universal, so obviously everyone understands it.
Lets start a basic script.
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
Now we need add a unit register for the Oncombat function and we do that by adding this to the bottom of our script
RegisterUnitEvent(npcentry, event, "functionname")
Now your script should look like THIS:
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
RegisterUnitEvent(npc_entry, 1, "NPCNAME_OnCombat")
What this does is when our NPCNAME enters combat he/she will yell out I Shall PWN YOU!
Now for some more functions
Second Part: More Functions
A LUA script can have very many functions. four basic functions are:
< OnCombat >
< OnDied >
< OnKilledTarget >
< OnLeaveCombat >
Once we add those in it will look like
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
end
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npc_entry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npc_entry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npc_entry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npc_entry, 4, "NPCNAME_OnDied")
What these will do is let our mob
enter combat
register he died
register he killed someone
register when he leave combat
THIRD PIECE: Casting Spells
Non-AoE Spell On Everyone.
An npc is pretty boring if he doesnt cast spells on you, so it's time for us to make him
We can do this by a new function in the script:
function NPCNAME_SpellName(Unit, Event)
end
Pnce you make the function, you have to add a:
Unit:CastSpellOnTarget(spellid, Unit:WhoShouldITarget) CastSpellontarget means its without casting time
or we use
Unit:FullCastSpellOnTarget(spellid, Unit:whodoiattack?) this one is with casting time
soooo if we use no casting time we get
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(spellid, Unit:whoiattack?)
end
OR
we do a casting time spell and have
function NPCNAME_Spellname(Unit, Event)
Unit:FullCastSpellOnTarget(spellid, Unit:whoiattack?)
end
whoiattack can be:
- GetRandomPlayer(0) this is a Random Player
- GetRandomPlayer(1) this is a Random guy in Short-Range
- GetRandomPlayer(2) this is aRandom guy in Mid-Range
- GetRandomPlayer(3) this is a Random guy in Long-Range
- GetRandomPlayer(4) = Random guy with Mana
- GetRandomPlayer(5) = Random guy with Rage
- GetRandomPlayer(6) = Random guy With Energy
- GetRandomPlayer(7) = Random guy WILL NOT BE Main-Tank
- GetMainTank()
- GetClosestPlayer()
- GetAddTank()
Ok, now I want you to add to your script, and we can do this by adding:
Unit:RegisterEvent("functionname", timeinMS, HowManyTimes?)
to your OnCombat function:
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
Unit:RegisterEvent("NPCNAME_Spellname", 10000, 0)
end
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(spellid, Unit:GetRandomPlayer(0))
end[/color]
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npcentry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npcentry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npcentry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npcentry, 4, "NPCNAME_OnDied")
If your npc casts on itself instead of who you want use this
function Name_Event(pUnit, Event)
local plr = pUnit:GetRandomPlayer(0) <-- Or something else
if (plr ~= nil) then
pUnit:FullCastSpellOnTarget(SpellID, player)
end
end
Dont need to use pUnit you can if you want but better off using Unit for this script
AoEffect Spells:
Sometimes you want your NPC to cast an AoE liked earthquake
Heres how
function NPCNAME_Earthquake(Unit, Event)
Unit:CastSpell(Spellid)
end
Remember we need to make a register also:
Unit:RegisterEvent("function_name", timeinms, howManyTimes?)
to our oncombat function:
After adding that our sccript looks like this
function NPCNAME_OnCombat(Unit, Event)
Unit:SendChatMessage(12, 0, "I Shall PWN YOU!")
Unit:RegisterEvent("NPCNAME_Spellname", 10000, 0)
Unit:RegisterEvent("NPCNAME_Earthquake", 20000, 5)
end
function NPCNAME_Spellname(Unit, Event)
Unit:CastSpellOnTarget(Spellid, Unit:GetRandomPlayer(0))
end
function NPCNAME_Earthquake(Unit, Event)
Unit:CastSpell(Spellid)
end
function NPCNAME_OnDied(Unit, Event)
RemoveEvents()
end
function NPCNAME_OnKilledTarget(Unit, Event)
end
function NPCNAME_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
RegisterUnitEvent(npcentry, 1, "NPCNAME_OnCombat")
RegisterUnitEvent(npcentry, 2, "NPCNAME_OnLeaveCombat")
RegisterUnitEvent(npcentry, 3, "NPCNAME_OnKilledTarget")
RegisterUnitEvent(npcentry, 4, "NPCNAME_OnDied")
More Events to See:
SendChatMessage
type:
11 – say
12 – yell
13 – whisper
Languages
0 = UNIVERSAL // Anyone can see this
1 = ORCISH
2 = DARNASSIAN
3 = TAUREN
6 = DWARVISH
7 = COMMON
8 = DEMONIC
9 = TITAN
10 = THELASSIAN
11 = DRAGONIC
12 = KALIMAG
13 = GNOMISH
14 = TROLL
33 = GUTTERSPEAK
35 = DRAENEI
RegisterUnitEvents events:
type:
1 = Enter Combat <Needed
2 = Leave Combat <Needed
3 = Killed Target <Needed
4 = Died <Needed
5 = AI Tick
6 = Spawn
7 = Gossip Talk
8 = Reach Waypoint
9 = On Leave Limbo
10 = Player Enters Range
A nice little example script is this
function Dark Illidan_ArcaneExplosion(Unit, Event)
Unit:SendChatMessage(12, 0, "To...much...ENNNNNNNNNEEEEEERRRRGGGGGGGYYYYYY!")
Unit:CastSpell(29973)
ArcaneTimer=math.random(25000,35000)
end
function Dark Illidan_Phase4(Unit, Event)
if Unit:GetHealthPct() < 30 then
RemoveEvents()
Unit:SendChatMessage(12, 0, "Impressive... Time for some fun!")
Unit:CastSpell(20620)
end
end
function Dark Illidan_Phase3(Unit, Event)
if Unit:GetHealthPct() < 50 then
RemoveEvents()
Unit:SendChatMessage(11, 0, "Congratulations on making it this far... but your luck has just run out")
Unit:CastSpell(45031)
end
end
function Dark Illidan_Phase2(Unit, Event)
if Unit:GetHealthPct() < 75 then
RemoveEvents()
Unit:SendChatMessage(11, 0, "I underestimated you mortals at first. It wont happen again. Let's start over and you will see what i mean!")
Unit:CastSpell(25840)
end
end
function Dark Illidan_Earthquake(Unit)
Unit:SendChatMessage(12, 0, "You will not prevail!")
Unit:CastSpell(35569)
end
function Dark Illidan_Garrote(Unit)
Unit:CastSpellOntarget(37066, Unit:GetRandomPlayer(0))
Unit:SendChatMessage(12, 0, "Haha! Gotcha!")
end
function Dark Illidan_OnCombat(Unit, Event)
Unit:SendChatMessage(11, 0, "Who dares disturb me in my lair!")
Unit:CastSpell(43648)
Unit:CastSpellOnTarget(37066, Unit:GetRandomPlayer(0)
ArcaneTimer=math.random(25000,35000)
Unit:RegisterEvent("Dark Illidan_ArcaneExplosion",ArcaneTimer,20)
Unit:RegisterEvent("Dark Illidan_Garrote",20000,4)
Unit:RegisterEvent("Dark Illidan_Earthquake",60000,10)
Unit:RegisterEvent("Dark Illidan_Phase2",1000,1)
Unit:RegisterEvent("Dark Illidan_Phase3",1000,1)
Unit:RegisterEvent("Dark Illidan_Phase4",1000,1)
end
function Dark Illidan_OnLeaveCombat(Unit, Event)
RemoveEvents()
end
function Dark Illidan_OnKilledTarget(Unit, Event)
Unit:SendChatMessage(12, 0, "You are no match for me!")
end
function Dark Illidan_OnDied(Unit, Event)
Unit:SendChatMessage(12, 0, "But...but..How! how could i be defeated by mere mortals...")
RemoveEvents()
end
RegisterUnitEvent(22, 1, "Dark Illidan_OnCombat")
RegisterUnitEvent(22, 2, "Dark Illidan_OnLeaveCombat")
RegisterUnitEvent(22, 3, "Dark Illidan_OnKilledTarget")
RegisterUnitEvent(22, 4, "Dark Illidan_OnDied")