[Tutorial] LUA Scripting

[Syrup]

[Tutorial: LUA Scripting]


=========================================================

I'm here to teach you about LUA Scripting. LUA is a nice program where you can let NPC's talk and cast spells. I'm going to learn you the basic tactics of LUA Scripting, sit and relax and enjoy the LUA!

First of all, I'm going to show you a basic script.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

function phase_2(pUnit, Event)
if pUnit:GetHealthPct() < 39 then
pUnit:RemoveEvents();
pUnit:FullCastSpellOnTarget(40877)
end
end

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RegisterEvent(“phase_1”,1000, 1)
end

RegisterpUnitEvent(ID, 1, "Mr_Ilk_OnCombat")

function is needed in every script, it tells what you are going to do.
pUnit is a basic name in the script, you can change it in whatever you want but remember to keep with one name.
Event means what it is.

Now I'm going to explain about a basic phase.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

This is a basic phase, here are the meanings of the functions.

function phase_1(pUnit, Event) Means that this is phase_1. You can change it in your own words, like function Cone_of_Fire(pUnit, Event)
if pUnit:GetHealthPct() 72 then Is really simple, if the pUnit (NPC) is on 72%, he will do the phase.

pUnit:RemoveEvents(); Means that the pUnit(NPC) stops casting the spells and stops sending the chat messages. Otherwise he would spawn chat messages and keeps casting spells.

pUnit:SendChatMessage(12, 0, "Burning Fire!") Means that the pUnit(NPC) yells something. 12 and 0 are basic numbers for yelling. 12 = yell, 0 is that everyone understands it. (Further information is at the end of the tutorial)

pUnit:FullCastSpellOnTarget(30926) Means that the pUnit(NPC) casts a spell on the Target. FullCastSpellOnTarget means that he will cast a spell with casting speed on a target. (Further information is at the end of the tutorial)

pUnit:RegisterEvent("phase_2",1000, 0) Means that you will register the event of phase 2. If you don't register the phase, he won't do the phase. 1000 means 1000 milliseconds, so he will register the phase in 10 seconds.

endMeans the end of the phase. Remember, always do an extra end when there is if pUnit:GetHealthPct.

This was a basic phase of Mr Ilk. Lets go on with the events.

There are different events, the most used events are:

OnCombat Means that when the boss or NPC gets in combat with players.
OnLeaveCombat Means that when players are leaving combat with the boss or NPC.
OnKilledTarget Means that when the boss or NPC killed a player.
OnDeath Means that when the boss or NPC died.

Those events are the basic events. One of the most important things are REGISTERING the events, means that events will work. Not using this ability will ruin your hole script.

RegisterUnitEvent (ID, 1, "Mr_Ilk_OnCombat")
RegisterUnitEvent (ID, 2, "Mr_Ilk_OnLeaveCombat")
RegisterUnitEvent (ID, 3, "Mr_Ilk_OnKilledTarget")
RegisterUnitEvent (ID, 4, "Mr_Ilk_OnDeath")

Now I will show you how it will look like in a script.

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnLeaveCombat(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnKilledTarget(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnDeath(pUnit, Event)
pUnit:RemoveEvents()
end

You can let them talk in the events to.

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
pUnit:SendChatMessage(12, 0, Haha, here are the weaklings!")
end

You don't need to do all the events in one script. If you don't use the events, you don't need to put them in the script.

If we mix the hole script, we will get this as result.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

function phase_2(pUnit, Event)
if pUnit:GetHealthPct() < 39 then
pUnit:RemoveEvents();
pUnit:FullCastSpellOnTarget(40877)
pUnit:RegisterEvent("phase_3",1000, 0)
end
end

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
pUnit:SendChatMessage(12, 0, Haha, here are the weaklings!")
pUnit:RegisterEvent(“phase_1”,1000, 1)
end

RegisterpUnitEvent(ID, 1, "Mr_Ilk_OnCombat")

Here are some more things you could use for scripting.

SendChatMessage Events:
11 – npc say
12 – npc yell
13 – npc whisper

Language:
0 = UNIVERSAL
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:
eventtype:
1 = On Combat
2 = On Leave Combat
3 = On Killed Target
4 = On Died
5 = On AI Tick
6 = On Spawn
7 = On Gossip Talk
8 = On Reach Waypoint
9 = On Leave Limbo
10 = On Player Enters Range

Credits:

-[Tutorial: LUA Scripting]


=========================================================

I'm here to teach you about LUA Scripting. LUA is a nice program where you can let NPC's talk and cast spells. I'm going to learn you the basic tactics of LUA Scripting, sit and relax and enjoy the LUA!

First of all, I'm going to show you a basic script.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

function phase_2(pUnit, Event)
if pUnit:GetHealthPct() < 39 then
pUnit:RemoveEvents();
pUnit:FullCastSpellOnTarget(40877)
end
end

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RegisterEvent(“phase_1”,1000, 1)
end

RegisterpUnitEvent(ID, 1, "Mr_Ilk_OnCombat")

function is needed in every script, it tells what you are going to do.
pUnit is a basic name in the script, you can change it in whatever you want but remember to keep with one name.
Event means what it is.

Now I'm going to explain about a basic phase.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

This is a basic phase, here are the meanings of the functions.

function phase_1(pUnit, Event) Means that this is phase_1. You can change it in your own words, like function Cone_of_Fire(pUnit, Event)
if pUnit:GetHealthPct() 72 then Is really simple, if the pUnit (NPC) is on 72%, he will do the phase.

pUnit:RemoveEvents(); Means that the pUnit(NPC) stops casting the spells and stops sending the chat messages. Otherwise he would spawn chat messages and keeps casting spells.

pUnit:SendChatMessage(12, 0, "Burning Fire!") Means that the pUnit(NPC) yells something. 12 and 0 are basic numbers for yelling. 12 = yell, 0 is that everyone understands it. (Further information is at the end of the tutorial)

pUnit:FullCastSpellOnTarget(30926) Means that the pUnit(NPC) casts a spell on the Target. FullCastSpellOnTarget means that he will cast a spell with casting speed on a target. (Further information is at the end of the tutorial)

pUnit:RegisterEvent("phase_2",1000, 0) Means that you will register the event of phase 2. If you don't register the phase, he won't do the phase. 1000 means 1000 milliseconds, so he will register the phase in 10 seconds.

endMeans the end of the phase. Remember, always do an extra end when there is if pUnit:GetHealthPct.

This was a basic phase of Mr Ilk. Lets go on with the events.

There are different events, the most used events are:

OnCombat Means that when the boss or NPC gets in combat with players.
OnLeaveCombat Means that when players are leaving combat with the boss or NPC.
OnKilledTarget Means that when the boss or NPC killed a player.
OnDeath Means that when the boss or NPC died.

Those events are the basic events. One of the most important things are REGISTERING the events, means that events will work. Not using this ability will ruin your hole script.

RegisterUnitEvent (ID, 1, "Mr_Ilk_OnCombat")
RegisterUnitEvent (ID, 2, "Mr_Ilk_OnLeaveCombat")
RegisterUnitEvent (ID, 3, "Mr_Ilk_OnKilledTarget")
RegisterUnitEvent (ID, 4, "Mr_Ilk_OnDeath")

Now I will show you how it will look like in a script.

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnLeaveCombat(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnKilledTarget(pUnit, Event)
pUnit:RemoveEvents()
end

function Mr_Ilk_OnDeath(pUnit, Event)
pUnit:RemoveEvents()
end

You can let them talk in the events to.

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
pUnit:SendChatMessage(12, 0, Haha, here are the weaklings!")
end

You don't need to do all the events in one script. If you don't use the events, you don't need to put them in the script.

If we mix the hole script, we will get this as result.

function phase_1(pUnit, Event)
if pUnit:GetHealthPct() < 72 then
pUnit:RemoveEvents();
pUnit:SendChatMessage(12, 0, "Burning Fire!")
pUnit:FullCastSpellOnTarget(30926)
pUnit:RegisterEvent("phase_2",1000, 0)
end
end

function phase_2(pUnit, Event)
if pUnit:GetHealthPct() < 39 then
pUnit:RemoveEvents();
pUnit:FullCastSpellOnTarget(40877)
pUnit:RegisterEvent("phase_3",1000, 0)
end
end

function Mr_Ilk_OnCombat(pUnit, Event)
pUnit:RemoveEvents()
pUnit:SendChatMessage(12, 0, Haha, here are the weaklings!")
pUnit:RegisterEvent(“phase_1”,1000, 1)
end

RegisterpUnitEvent(ID, 1, "Mr_Ilk_OnCombat")

Here are some more things you could use for scripting.

SendChatMessage Events:
11 – npc say
12 – npc yell
13 – npc whisper

Language:
0 = UNIVERSAL
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:
eventtype:
1 = On Combat
2 = On Leave Combat
3 = On Killed Target
4 = On Died
5 = On AI Tick
6 = On Spawn
7 = On Gossip Talk
8 = On Reach Waypoint
9 = On Leave Limbo
10 = On Player Enters Range

Credits:

-sjoerdman



I hope you enjoyed and learned about LUA Scripting now.

[suicidewarpig]

So what do you do after that?

[Syrup]

So what do you do after that?

Well, now, you can start the basic part of LUA scripting.

[matydunkk]

Nice Guide.

[halostorm]

Nice Guide +rep but i dont understand lua :S how should i make an custom npc with it ?? or teleporter ? and where do i choose what npc should say that ?

[Aelus]

Quick question. How do I make it so the NPC will yell something every 1 minute. I'm going to make a beggar NPC.

[matydunkk]

Nice Guide +rep but i dont understand lua :S how should i make an custom npc with it ?? or teleporter ? and where do i choose what npc should say that ?

You change "ID" at the event at the very bottem to the npc entry id of the mob you want to use the script on. Also change the names to your npc's name.

As for a teleporter the functions are slightly different, download a teleporter lua and compare the difference with this scripting and try and work out how to do it yourself. i may make a guide.

[_DEFiANT]

Good Job. I needed to see some other LUA scripts.
All I know is how to script a Teleporter NPC
I am actually working on one right now. I uploaded to my site so other people can see it so they can see what is coming.

Click here to see the one I am working on.

EDIT: Wow. Sorry. I forgot to say +rep!

[halostorm]

How do i spawn the npc ?? no entry id ?

[ViND_]

Hello. I know its a little old thread but I found it on search, so I want to ask something. What program do you use to save your LUA? I mean what program do you do it with. Or do you do it in notepad? I'm very interested in LUA. I want to start as soon as I can.

[sonny181]

Nice i might learning LUA, this could be a great start

[ViND_]

So what program do you use? I found this LUA FOR WINDOWS thing. Is it that?

[spikedzzilm]

is there a way to make a script to make the ships and zeplins work right? or any way for that mater?

[ViND_]

Please answer my question, I really want to script.

[spikedzzilm]

i use notepad for lua :/