I'm trying to create an addon for World of Warcraft. I have created a function that checks whether a buff has been added to the current player.
Button:RegisterEvent("UNIT_AURA");
local function auraGained(self, event, ...)
if (UnitAura("player", "Heating Up")) then
if (heatingUpIsActive ~= 1) then
heatingUpIsActive = heatingUpIsActive + 1
print (heatingUpIsActive)
end
end
Button:SetScript("OnEvent", auraGained);
This works great, but how do I check if UnitAura is not "Heating Up"?
Also, I would prefer if heatingUpIsActive were a boolean, but it seems to not like when I do that. What is the correct way to create a boolean in Lua?
Your function isn't checking the aura that caused the event. It's looking for "Heating Up" any time any UNIT_AURA event comes by. In fact, it looks like the UNIT_AURA event doesn't actually tell you which aura triggered it. So you can't "check if UnitAura is not "Heating Up"", because you simply don't know what aura caused the event. Perhaps it was even several auras at once.
However, the event does tell you what unit got the aura. It's the first vararg. You should probably check to make sure it's player before doing something
local unitid = ...
if unitid ~= "player" then return end
Also, you didn't explain what problems you had with booleans. You should just be able to say something like
if not heatingUpIsActive then
heatingUpIsActive = true
-- do whatever you want
end
although I never saw any declaration of the variable in your code. It's a bad idea to use globals for things like this, so you should declare
local heatingUpIsActive
before the function declaration, e.g.
local heatingUpIsActive
local function auraGained(self, event, ...)
-- ...
Related
An example would have been like
local E = game:GetService('UserInputService').SetKeyDown(Enum.KeyCode.E)
but it doesnt work ofcourse because i cant jsut make my game press E by itself with this thing, so it requieres soemthing longer and if you find the solution can you also do one where it makes it pressed down?
The input can only be registered on the client, therefore you will have to code in a LocalScript. There are 2 services which are used to get the player's input:-
UserInputService
This example shows how to use the UserInputService in getting the player's LeftMouseButton input.
local UserInputService = game:GetService("UserInputService")
local function onInputBegan(input)
if input.UserInputType == Enum.UserInputType.MouseButton1 then
print("The left mouse button has been pressed!")
end
end
UserInputService.InputBegan:Connect(onInputBegan)
ContextActionService
This example properly shows how to use ContextActionService in binding user input to a contextual action. The context is the tool being equipped; the action is reloading some weapon.
local ContextActionService = game:GetService("ContextActionService")
local ACTION_RELOAD = "Reload"
local tool = script.Parent
local function handleAction(actionName, inputState, inputObject)
if actionName == ACTION_RELOAD and inputState == Enum.UserInputState.Begin then
print("Reloading!")
end
end
tool.Equipped:Connect(function ()
ContextActionService:BindAction(ACTION_RELOAD, handleAction, true, Enum.KeyCode.R)
end)
You should take a look at the Wiki pages.
It sounds like you want to write a script to press the E key, but that isn't possible.
You can bind actions to keypresses, just like in the examples Giant427 provided, and you can also manually call the functions that are bound to those actions, but you cannot write a script to fire keyboard inputs.
local Player = game.Players.LocalPlayer
local PlayerCash = Player:WaitForChild("leaderstats"):WaitForChild("Strength")
local Mouse = Player:GetMouse()
local amount = 50
script.Parent.Activate:Connect(function()
game.Players.LocalPlayer.leaderstats.money.Value = game.Players.LocalPlayer.leaderstats.money.Value + amount
end)
I am trying to make a code to give Strength when you click. When I press 'Play' it doesn't work. All it says in the output is
'attempt to index function with 'Connect'.'
The error "attempt to index [type] with [field name]" means that you are incorrectly using something like an object, and you are trying to access some field on it.
In your case, this error is pointing at the line : script.Parent.Activate:Connect.This says that script.Parent.Activate is a function and not a table, and you cannot call Connect on a function. This is just to help us figure out what is wrong with our code.
Since you working with Tools, there is a simple fix. Instead of using the Activate function, you are looking for the Activated event. So just change update that line like this :
script.Parent.Activated:Connect(function()
It connects a function to an event that happened, like this:
local tool = script.Parent
-- It connects the event (the tool being equipped) to a function.
tool.Equipped:Connect(function()
-- CODE
end)
Also, the answer above is how you can fix your problem and here's a shortcut: You have defined "Player" and you could've used it inside the function. Have a great day and God bless everyone here.
Currently, I'm working on a simple Lua Roblox script that is supposed to turn the parent part blue when "/blue" is entered in the chat by ANY player. When run, it returns the error "attempt to index global 'message' (a nil value)" in the output. Also, when I hover my cursor over "message" it says "unknown global 'message'". I am sure I'm doing something terribly wrong as I am new to the language. I have tried moving the script into Workspace and Chat (of course changing local part when I do) but those don't help. I'm confident it's a code issue specifically defining a global variable.
local part = script.Parent
local function scan()
if message:sub(1,5) == "/blue" then
part.BrickColor = BrickColor.Blue()
end
end
scan()
First, you didn't define "message" because "message" is supposed to be an argument of
player.Chatted()
So instead of just running scan(), make multiple functions, here is the revised code:
local part = script.Parent
game.Players.PlayerAdded:Connect(function(plr)
plr.Chatted:Connect(function(message)
message = string.lower(message)
if message == "/blue" then
part.BrickColor = BrickColor.new("Blue")
end
end)
end)
Let me know if you need me to elaborate, I understand that sometimes this stuff can be confusing.
recently I have been creating an imitation HarborRP gamemode for Garry's Mod, and I'm trying to recreate the Smuggler NPC (You'll know what I mean if you've ever played HarborRP) So basically I want the NPC to open ONE Derma-Frame window when the player presses their use key on it. I have the NPC created and all of that, but when the player simply presses their use key on the NPC, a million windows pop up, I have the NPC/Entity's use type set to SIMPLE_USE, but it seems like that doesn't matter because so many windows pop up. the VGUI/Derma Frame's settings is set to MakePopup() but that doesn't matter either. See if you can find whats wrong with it, I have very little knowledge of LUA.
init.lua file:
include("shared.lua")
AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")
util.AddNetworkString("smug")
hook.Add("PlayerUse", "menuu", function(ply, ent)
net.Start("smug")
net.Send(ply)
end)
function ENT:Initialize()
self:SetModel('models/humans/group01/female_01.mdl')
self:SetHullType(HULL_HUMAN)
self:SetHullSizeNormal()
self:SetNPCState(NPC_STATE_SCRIPT)
self:SetSolid(SOLID_BBOX)
self:SetUseType(SIMPLE_USE)
self:DropToFloor()
end
cl_init.lua file:
include("shared.lua")
function ENT:Draw()
self.Entity:DrawModel()
end
net.Receive("smug", function()
if( !frame ) then
local frame = vgui.Create("DFrame")
frame:SetSize(900,600)
frame:SetPos(ScrW()/2-450,ScrH()/2-300)
frame:SetVisible(true)
frame:MakePopup()
frame:SetDeleteOnClose(true)
elseif (frame) then print("HI")
end
end)
shared.lua file:
ENT.Base = "base_ai"
ENT.Type = "ai"
ENT.PrintName = "[DEV] Smuggler NPC"
ENT.Category = "InVaLiD's HBRP Entities"
ENT.Author = "InVaLiD"
ENT.Spawnable = true
ENT.AdminSpawnable = true
ENT.AutomaticFrameAdvance = true
Something To Note
All of these files are in the addons/smug_npc/lua/entities/ folder.
Yes, I know I have weird names for things, that's just me.
I have a basic to no knowledge of lua, so explain things please :)
I really do appreciate your help, and your will to help people, please know that I thank you all for being here just to sort other people's problems even though you could be spending your time doing something productive, Thank you!
You need to put your code that does net.Send into the entities ENT:Use function rather than on the PlayerUse hook.
function ENT:Use(ply)
net.Start("smug")
net.Send(ply)
end
The below line which you already have in your code in the initialize function makes the entity call the ENT:Use function once when a player presses E on it, which it seems that you want to do so that is good:
self:SetUseType(SIMPLE_USE)
Also, I recommend checking out the gmod forums if you need developer help in future.
GMod forums: https://gmod.facepunch.com/f
-- This is some of the code made by Roblox themselves:
-- Setup table that we will return to scripts that require the ModuleScript.
local PlayerStatManager = {}
-- Table to hold all of the player information for the current session.
local sessionData = {}
-- Function the other scripts in our game can call to change a player's stats. This
-- function is stored in the returned table so external scripts can use it.
function PlayerStatManager:ChangeStat(player, statName, changeValue)
sessionData[player][statName] = sessionData[player][statName] + changeValue
end
-- Function to add player to the sessionData table.
local function setupPlayerData(player)
sessionData[player] = {Money = 0, Experience = 0}
end
-- Bind setupPlayerData to PlayerAdded to call it when player joins.
game.Players.PlayerAdded:connect(setupPlayerData)
-- Return the PlayerStatManager table to external scripts can access it.
return PlayerStatManager
--------------------------------------------------------------------------------
-- Require ModuleScript so we can change player stats
local PlayerStatManager = require(game.ServerStorage.PlayerStatManager)
-- After player joins we'll periodically give the player money and experience
game.Players.PlayerAdded:connect(function(player)
while wait(2) do
PlayerStatManager:ChangeStat(player, 'Money', 5)
PlayerStatManager:ChangeStat(player, 'Experience', 1)
end
end)
When I run these two script, it run perfectly, adding the print(sessionData[player][statName]) inside the ChangeStat function, but when I removed the game.Players.PlayerAdded:connect(setupPlayerData) part in the module script, it stopped working. I though module script does not execute code without it being called, and if that was the case, shouldn't the game.Players.PlayerAdded:connect(setupPlayerData) part be delay and not function since player's already added, therefore it not firing?
require executes the required code.
If that was not the case you would not be able to get a table through require, as your return PlayerStatManager statement would not be executed.
As a consequence removing
-- Bind setupPlayerData to PlayerAdded to call it when player joins.
game.Players.PlayerAdded:connect(setupPlayerData)
will cause an added player not to be initialized properly. This basically says: when a new player is added, call setupPlayerData.
Where setupPlayerData says: give a new set of stats to player
As you removed that line no player has stats. If you don't have stats you can't increase their values...
So obviously you did not understand what the code did befor you changed it. Therefor you cannot understand why your changes cause problems.
If you change a system you don't understand you can be lucky, but in most cases you will utterly fail.